TEA19361T/1J - NXP SEMICONDUCTORS

TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Rev. 1 — 9 August 2016 Product data sheet

1 General description

The TEA19361T is a member of the GreenChip family of controller ICs for switched

mode power supplies. It is intended for flyback topologies to be used either standalone

or together with USB PD or smart charging controllers (like the TEA190x series) at the

secondary side. The built-in green functions provide high efficiency at all power levels.

The TEA19361T is compatible with multiple output voltage applications with a wide

output range from 5 V to 20 V in Constant Voltage (CV) mode. When used with a

secondary-side controller IC, like the TEA190x series, it supports Constant Current (CC)

mode down to 3 V output voltage.

At high power levels, the flyback converter operates in Quasi-Resonant (QR) mode. At

lower power levels, the controller switches to Frequency Reduction (FR) in Discontinuous

Conduction Mode (DCM) operation. The peak current is limited to a minimum level.

Valley switching is used in all operating modes.

At very low power levels, the controller uses burst mode to regulate the output power.

A special optocoupler current reduction regulation has been integrated which reduces

the average optocoupler current in all modes to a minimum level. This reduction ensures

high efficiency at low power and excellent no-load power performance. As the switching

frequency in this mode is never less than fsw(min) and the burst repetition rate is regulated

to a low value, the audible noise is minimized. During the non-switching phase of the

burst mode, the internal IC supply current is minimized for further efficiency optimization.

The TEA19361T includes a wide set of protections that are safe-restart protections. One

of these protections is an accurate OverPower Protection (OPP). If the output is shorted,

the system stops switching and restarts. The output power is then limited to a lower level.

The TEA19361T is manufactured in a high-voltage Silicon-On-Insulator (SOI) process.

The SOI process combines the advantages of a low-voltage process (accuracy, high-

speed protection, functions, and control). However, it also maintains the high-voltage

capabilities (high-voltage start-up, low standby power, and brownin/brownout sensing at

the input).

The TEA19361T enables low-cost, highly efficient and reliable supplies for power

requirements up to 75 W using a minimum number of external components.

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

2 / 33

2 Features and benefits

2.1 General features

•SMPS controller IC supporting smart-charging applications and multiple-output-voltage

applications

•Wide output range (5 V to 20 V in CV mode, 3 V to 20 V in CC mode, and 3 V to 6 V in

direct charging mode)

•Housed in a small SO10 package

•Suited for mobile charger applications that require low Common-Mode Noise (CMN)

distortion (meeting the IEC EN62684 specification)

•Adaptive dual supply for highest efficiency over the entire output voltage range

•Integrated high-voltage start-up

•Continuous VCC regulation during start-up and protection via the HV pin, allowing a

minimum VCC capacitor value

•Reduced optocurrent enabling low no-load power (20 mW at 5 V output)

•Fast transient response from 0 to full load

•Minimal audible noise and output voltage ripple in all operating modes

•Integrated soft start

2.2 Green features

Enables high efficiency operation over a wide power range via:

•Low supply current during normal operation (0.6 mA without load)

•Low supply current during non-switching state in burst mode (0.2 mA)

•Valley switching for minimum switching losses

•Frequency reduction with fixed minimum peak current to maintain high efficiency at low

output power levels

2.3 Protection features

All protections are safe-restart protections.

•Mains voltage compensated OverPower Protection (OPP)

•OverTemperature Protection (OTP)

•Integrated overpower time-out

•Integrated restart timer for system fault conditions

•Continuous mode protection using demagnetization detection

•Accurate OverVoltage Protection (OVP)

•General-purpose input for safe restart protection; for use with system OverTemperature

Protection (OTP)

•Driver maximum on-time protection

•Brownin and brownout protection

3 Applications

•Battery chargers for smart phones and media tablets

•Battery chargers for mobile devices with touchpad display

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

3 / 33

4 Ordering information

Table 1. Ordering information

Type number Package

Name Description Version

TEA19361T/1 SO10 plastic small outline package; 10 leads; body width 3.9 mm; body

thickness 1.35 mm

SOT1437-1

5 Marking

Table 2. Marking codes

Type number Marking code

TEA19361T/1 TEA19361T

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

4 / 33

6 Block diagram

Ton > 55 µs

V=f(laux) BLANK

lpeak

lpeakSoftStart

softstart

Gate

OCP

DRIVER

ISENSE

VinMeasure

Isense

AUX

Iaux

StartOPCntr

A/D

CONVERSION

VCC charged via

HV current source

Iprotect = on

Normal mode

Ivcc = 600 µA

OSCILLATOR

AND

TIMING SIGNALS

DELAY TIMERS

OffsetA/D

A/D

safe-restart protection mode

VCC regulated to Vccstart

Ivcc = 250 µA

enable

200 ms

COUNTER

VoutRegulated

OPdetection

TonMax

Standby mode

Ivcc = 250 µA TEMPERATURE

PROTECTION

PeriodCounter

Nnew=f(Nprev, Tperiod) REGISTER

OntimeCounter Ton_count Ton_ref

Tperiod

HVjfet

VCCH

DIGITAL

CONTROL BrownOut

TonMaxGate

Gate VinMeasure

StartOPCntr

1000 ms enable

SafeRestart

COUNTER

Restart

set rst

A B

A≥B

clk

gate

r q

qgate

OTP

aaa-023925

VCC Start

Normal mode

Demag

BrownOut

Protection

OCP

StartOPCntr

AuxOVP

Power-down

OVP+Protect

14.9 V

1.45 V

11 V

9.9 V

8.65 V

1.25 mA

13 V

74 µA

0.5 V

3.5 V

5 V

0.2 V

3 V

AUX

200 nA

4.8 V

Demag 35 mV

VCC Low

VCC Stop

VCC Reset

VCC Charge

Vcc>Vccstart

Vprotect>0.5 V

T = 1000 ms

and

Vcc>Vccreset

Vcc<Vccstop

protection

BurstMode=1

BurstOn=0

BurstOn=1

VccDischarge

VCC Discharge

VCCL

PROTECT

80 µA 100 µA +

1 µA hys

GND

CTRL

BurstOn

BurstMode

loptoLt100u

VoutRegulatedVccStop

Ctrl_p

130 KHz

750 mv

140 mv

25 KHz

2.25 V 4.1 V1.8 V

Ctrl_p

Freq

Figure 1. TEA19361T block diagram

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

5 / 33

7 Pinning information

7.1 Pinning

aaa-020153

n.c.

PROTECT

CTRL

AUX

VCCH

GND

VCCL

ISENSE

DRIVER

Figure 2. TEA19361T pin configuration (SO10)

7.2 Pin description

Table 3. Pin description

Symbol Pin Description

VCCH 1 higher supply voltage

GND 2 ground

VCCL 3 lower supply voltage

ISENSE 4 current sense input

DRIVER 5 gate driver output

AUX 6 auxiliary winding input for demagnetization timing, valley

detection, overpower correction, and OVP

CTRL 7 control input

PROTECT 8 general-purpose protection input; pin for power-down mode

n.c. 9 high-voltage safety spacer; not connected

HV 10 high-voltage start-up; brownin/brownout sensing

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

6 / 33

8 Functional description

8.1 Supply management

The chip is supplied by high-voltage mains via the HV pin during start-up and protection

mode. When the system starts switching, the auxiliary windings take over the supply.

The IC has two supply pins, the VCCH and VCCL pins. The lower pin (VCCL) supplies

the IC directly. The higher supply pin (VCCH) is connected to the VCCL pin via an

internal voltage regulator. When used in an application, which supports multiple output

voltages, a pair of auxiliary transformer windings can be used to supply the IC efficiently

at all output levels. To supply the IC at higher output voltages, the winding with fewer

turns can be connected to the VCCL pin. At the lower output voltages, the winding

with more turns can supply the IC via the VCCH pin. The voltage capability of these

pins is chosen such that applications with an output voltage range from 3 V to 20 V are

supported optimally. When the voltage on the VCCL pin drops to below Vintegd(VCCL), the

regulator between the VCCH and VCCL pins turns on.

All internal reference voltages are derived from a temperature compensated on-

chip band gap circuit. Internal reference currents are derived from a trimmed and

temperature-compensated current reference circuit.

8.2 Start-up and UnderVoltage LockOut (UVLO)

Initially, the capacitor on the VCCL pin is charged from the high-voltage mains using the

HV pin. The voltage on the VCCH pin follows (via an internal diode) the voltage on VCCL

pin. In this way, the capacitor on the VCCH pin is charged. As long as VCC (the voltage

on pin VCCL) is below Vstartup, the IC current consumption is minimized. When VCC

reaches the Vstartup level, the control logic activates the internal circuitry. The IC waits

for the PROTECT pin to reach Vdet(PROTECT) + Vdet(hys)PROTECT and the mains voltage

to increase to above the brownin level. Meanwhile, the internal power-control signal

(which depends on the current at the CTRL pin) also increases to its maximum value.

When all these conditions are met, the system starts switching with soft start. In a typical

application, the auxiliary winding of the transformer takes over the supply.

During the start-up period, the VCC pin is continuously regulated to the Vstartup level

using the HV charge current. The pin is regulated until the output voltage is at its

regulation level, which is detected via the CTRL pin. In this way, the VCC capacitor

value can be limited. Due to the limited current capability from the HV pin mains voltage

dependent, the voltage on pin VCC can still drop slightly during the start-up period.

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

7 / 33

aaa-020155

321 4

protect OK

input voltage OK

brownin detection

active

rectified

mains

gate

VCC(stop)

VCC(start)

VCC

Figure 3. Start-up sequence

8.3 Modes of operation

The TEA19361T operates primarily in fixed frequency DCM mode. At low powers, it

enters burst mode. At high powers, it can operate in Quasi-Resonance (QR) mode (see

Figure 4). The auxiliary winding of the flyback transformer provides demagnetization

information.

aaa-023870

drain voltage at different points

25 kHz

Vopp(ISENSE)

145 mV

lpeak

128 kHz

quasi-resonant mode

discontinuous mode

with valley

switching

frequency

reduction

system enters

burst mode

from here

Figure 4. Modes of operation

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

8 / 33

At high output power, the converter operates in QR-mode. Each converter cycle starts

after the demagnetization of the transformer and the detection of the valley at the end of

the previous cycle. In QR-mode, switching losses are minimized because the external

MOSFET is switched on while the drain-source voltage is minimal.

To limit the frequency of operation and enable good efficiency, the QR operation

switches to DCM operation with valley skipping when the maximum frequency limit

(fsw(max)) is reached. This frequency limit reduces the MOSFET switch-on losses and

conducted ElectroMagnetic Interference (EMI).

At medium power levels, the controller enters Frequency Reduction (FR) mode. A

Voltage Controlled Oscillator (VCO) controls the frequency. The minimum frequency in

this mode is (fsw(min)) . To maintain high efficiency, the primary peak current is kept at a

minimum level during FR-mode. Valley switching is also active in this mode.

At low power, the converter enters the burst mode. In burst mode, the switching

frequency is fsw(min).

8.4 Mains voltage measuring

In a typical application, the mains input voltage is measured using the HV pin.

The mains voltage is measured every 1 ms by pulling down the HV pin to ground and

measuring its current. This current then reflects the input voltage.

The system determines if the mains voltage exceeds the brownin level.

When the mains exceeds the brownin level, the system is allowed to start switching.

If the mains voltage is continuously below the brownout level for at least 30 ms, a

brownout is detected and the system immediately stops switching. This period is required

to avoid that the system stops switching during a short mains interruption.

If the measured mains level exceeds the brownin/brownout threshold, subsequent

measuring of the mains input voltage is stopped for 7 ms to improve efficiency. In burst

mode, this waiting period is increased to 104 ms.

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

9 / 33

8.5 Auxiliary winding

To supply the control IC efficiently, the VCCH and VCCL pins are connected to auxiliary

windings via a diode and a capacitor.

To detect demagnetization and input and output voltage, one of the auxiliary windings

is connected to the AUX pin via a resistive divider (see Figure 19 and Figure 20). Each

switching cycle is divided in sections. During each section, the system knows if the

voltage or current out of the AUX pin reflects the demagnetization, valley, input voltage,

or output voltage (see Figure 5).

aaa-020159

Vi measurement demagnetization valley

Vo measurement

-0.7 V

AUX

DRIVER

drain

Figure 5. AUX pin used for demagnetization and input and output voltage measurement

When the external MOSFET is switched on, the voltage at the auxiliary windings reflects

the input voltage. The AUX pin is clamped to −0.7 V. The output current is a measure

of the input voltage. This current value is internally used to set the overpower limit on

Vsense(ipk). The demagnetization, valley and output voltages are measured as a voltage

on the AUX pin. In this way, the input voltage measurement and OVP can be adjusted

independently.

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

10 / 33

8.6 Protections

If a protection is triggered, the controller stops switching. To avoid false triggering, some

protections have a built-in delay.

Table 4. Protections

Protection Delay Action VCC regulated

AUX open no wait until AUX is connected no

brownout 30 ms wait until Vmains > Vbi yes

maximum on-time no safe restart yes

OTP internal 4.5 μs safe restart yes

OTP via the PROTECT

2 ms to 4 ms safe restart yes

OVP via the AUX pin 4 driver pulses[1] safe restart yes

OVP via VCCL pin 4 driver pulses[1] safe restart yes

overpower time-out 40 ms to 200 ms safe restart yes

overpower + UVLO no safe restart yes

overcurrent protection blanking time safe restart no

UVLO no Wait until VVCCL > Vstartup yes

[1] When the voltage on the PROTECT pin is below Vdet(PROTECT), the clock of the delay counter is changed from the driver

pulse to 1 ms internal pulse.

When the system stops switching, the VCCH and VCCL pins are not supplied via the

auxiliary winding anymore. Depending on the protection triggered, VVCCL is either

regulated to the Vstartup level via the HV pin or dropped down until the UVLO protection

triggered (see Table 4).

8.6.1 OverPower Protection (OPP)

The overpower protection function is used to realize a maximum output power which is

nearly constant over the full input mains.

For applications intended to operate fully in DCM mode, a constant overpower protection

level can be set by using the flat portion of the OPP curve (see Figure 6). On the other

hand, applications designed to operate in QR mode at maximum power require the OPP

level to be compensated for mains. They can be set to use the variable part of the OPP

curve.

The resistors connected to the AUX pin set the IAUX. They determine which part of the

OPP curve is used by the application.

The overpower compensation circuit measures the input voltage via the AUX pin. The

circuit outputs an overpower reference voltage that depends on this input voltage. If

the measured voltage at the ISENSE pin exceeds the overpower reference voltage

(Vopp(ISENSE)), the DRIVER output is pulled low (the primary stroke is cut short). The

overpower timer starts. In this way, the system limits the power to the maximum rated

value on a cycle-by-cycle base. If the overpower situation persists continuously for

200 ms, an overpower time-out is triggered. Figure 6 shows the overpower protection

curve.

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

11 / 33

aaa-023506

(mV)

510

298

0.3

1.46

# l

AUX#

(mA)

VOPP(ISENSE)

region optimized

for DCM operation

region optimized

for QR operation

Figure 6. Overpower protection curve

During system start-up, the maximum time-out period is lowered to 40 ms. When the

output voltage is within its regulation level, the maximum time-out period returns to

200 ms, limiting the output power to a minimum at a shorted output. Shortening the

overpower timer ensures that the input power of the system is limited to < 5 W at a

shorted output.

If the load requires more power than allowed by the OPP limit, the output voltage drops

because of the limited output power. As a result, the VCC voltage also drops and UVLO

can be triggered. To retain the same response in an overpower situation (whether UVLO

is triggered or not), the system enters the overpower protection mode when overpower

and UVLO are detected. The system entering the protection mode does not depend on

the value of the OP counter.

8.6.2 OverVoltage Protection (OVP; pins AUX and VCCL)

An accurate output OVP is implemented by measuring the voltage at the AUX pin during

the secondary stroke. As the auxiliary winding voltage is a well-defined replica of the

output voltage, the external resistor divider ratio RAUX2 / (RAUX1 + RAUX2) can adjust the

OVP level.

An accurate OVP circuit is also connected to the VCCL pin. It measures if the VCCL pin

voltage exceeds the level Vovp(VCCL) at the end of primary stroke.

An internal counter of four gate pulses prevents false OVP detection which can occur

during ESD or lightning events.

8.6.3 Protection input (PROTECT pin)

The PROTECT pin is a general-purpose input pin. It can be used to trigger one of the

protection types shown in Table 4. When the voltage on the PROTECT pin is pulled

below Vdet(PROTECT) (0.5 V), the converter is stopped.

The PROTECT pin can be used to create an OTP function. To create the OTP function,

a Negative Temperature Coefficient (NTC) resistor must be connected to this pin. When

the voltage on the PROTECT pin drops to below 0.5 V, overtemperature is detected.

The PROTECT current (maximum 74 μA) flowing through the external NTC resistor

creates the voltage. The PROTECT voltage is clamped to maximum 1.45 V. At room

temperature, the resistance value of the NTC resistor is much higher than at high

temperatures. Because of the clamp, the current out of the PROTECT pin is 1.45 V

divided by the resistance, which is much lower than 74 μA.

A filter capacitor can be connected to the PROTECT pin.

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

12 / 33

To avoid false triggering, an internal filter of 2 ms to 4 ms is applied.

8.6.4 OverTemperature Protection (OTP)

If the junction temperature exceeds the thermal temperature shutdown limit, an

integrated OTP feature ensures that the IC stops switching. OTP is a safe restart

protection.

A built-in hysteresis ensures that the internal temperature must drop 10 °C degrees

before the IC restarts.

8.6.5 Maximum on-time

The controller limits the on-time of the external MOSFET to 55 μs. When the on-time is

longer, the IC stops switching and enters safe restart mode.

8.6.6 Safe restart

If a protection is triggered and the system enters the safe restart mode (see Table 4,

the system restarts after a delay time (td(restart)). An internal current source (ICC(dch))

discharges the voltage on pin VCCL. The discharge allows the conditions at a restart

to be similar to a normal start-up. Because the system is not switching, the VCCL and

VCCH pins are supplied from the mains via the HV pin.

After the restart delay time (td(restart)), the control IC measures the mains voltage. If the

mains voltage exceeds the brownin level, the control IC activates the PROTECT pin

current source and the internal voltage sources connected to the CTRL pin. When the

voltages on these pins reach a minimum level, the soft start capacitor on the ISENSE pin

is charged and the system starts switching again.

The VCC is continuously regulated to the Vstartup level until the output voltage is within the

regulation level again.

8.7 Optobias regulation (CTRL pin)

In a typical application, the output voltage (or current) is sensed on the secondary side

(by a TL431 or a controller such as TEA190x). The feedback signal is passed to the

primary side via an optocoupler. The optocoupler sends the current information to the

CTRL pin of the TEA19361T. (see Figure 19 and Figure 20).

The TEA19361T applies a relatively fixed voltage at the CTRL pin (the input impedance

of the CTRL pin is Rint(CTRL)). It senses the current through the optocoupler. The

TEA19361T compares the current with an internal regulation level IIO(reg)CTRL (80 μA).

The difference is integrated with a slow time constant (in ms). It is added to the control

signal that sets the output power. If the optocurrent (at CTRL pin) exceeds the regulation

level (IIO(reg)CTRL)), the control signal reduces in this way, which leads to an output power

decrease and vice versa. The optocurrent (at the CTRL pin) slowly regulates towards the

regulation level (IIO(reg)CTRL). The result is a constant optocurrent during stable operation

at all output power levels.

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

13 / 33

aaa-021135

CTRL

A/D

D/A

OFFSET

80 µA

6 kΩ

Ctrl_p

Figure 7. Optobias regulation

Figure 7 shows the slow optocurrent regulation loop.

In addition to the slow optocurrent regulation loop described above, the CTRL current

directly contributes to the internal power control by creating a voltage drop across a 6 kΩ

resistor (see Figure 7). It determines the transient behavior of the power regulation loop,

which remains similar to ICs, like the TEA1836. The control loop responds to load or

line variations through this direct optocurrent contribution, whereas the slow offset loop

simply sets the steady state operation point.

The advantages of this type of regulation are:

•The optocoupler collector parasitics do not influence the loop. So, more freedom in

tuning the loop characteristics is ensured.

•Unlike the traditional situation where the optocoupler current becomes much higher at

lower output power, it retains the same low value in steady state at all powers.

Since the optocurrent is only 80 μA even at low powers, a load step to a very high

load can result in a maximum decrease of the optocurrent by this amount only. It limits

the possible power increase. To counter this possibility, the offset loop enters a fast

regulation mode when a significant optocurrent decrease is detected (to about 20 μA

under the regulation level). The fast regulation mode ensures a quick output power

increase.

8.8 Burst mode operation

When the output power drops to below the minimum level the system can supply while

operating at the minimum power setting (i.e. the switching frequency is at its minimum),

it can no longer reduce the optocurrent level to the regulation level IIO(reg)CTRL (= 80 μA).

In this situation, the optocurrent increases to exceed the level of the burst threshold

(Ith(burst)CTRL) and the burst mode is entered. Switching is paused and a burst-off period

commences. Consequently, the optocurrent decreases. When it drops to below the

Ith(burst)CTRL, a new burst of switching cycles is started (see Figure 8 and Figure 9).

Figure 8 shows that all the operating frequencies are outside the audible area. The

minimum switching frequency is fsw(min) and the burst mode repetition target period is

tburst.

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

14 / 33

The requested output power determines the number of pulses at each burst period. At

higher output power, the number of switching pulses increases. At low load, it decreases.

This burst mode regulation allows low-load operation without compromising on spectral

purity, while keeping the output ripple limited. In addition, the optocoupler current is

maintained at a very low level during low-load and standby operation. The result is a very

low standby power consumption.

To ensure good efficiency at very low load, the minimum number of switching cycles

is set to 1. When the minimum number of pulses is reached, the burst repetition period

cannot be reduced further. As the power decreases, the repetition rate of the single-pulse

bursts decreases as well to a very low value. To improve further, the no-load input power

and efficiency at low load, the current consumption of the IC is lowered to 240 μA during

the non-switching period in the burst mode.

aaa-023815

tburst fsw = fsw(min)

> tburst fsw = fsw(min)

Figure 8. Burst mode operation

To achieve a good transient response at an increased output load, the system starts

switching immediately when ICTRL drops to below Istart(burst). It keeps switching until the

optocurrent exceeds the level of Istart(burst)CTRL (100 μA). On the other hand, to achieve

a good transient response at a decreased output load, the system stops switching

immediately when the optocurrent exceeds the level of Istop(burst)CTRL (200 μA) at a

decreased output load. In both situations, the calculated number of switching pulses by

the internal digital circuit is overruled for the present burst cycle.

aaa-023524

< tburst

Iload

ICTRL

DRIVER

Ith(burst)CTRL

Istop(burst)CTRL

< tburst tburst > tburst > tburst

Figure 9. Transient response in burst mode

Even though the burst-mode regulates towards a target repetition frequency, the actual

repetition rate is lower than the target because of the discrete number of switching

cycles. Increasing or decreasing the number of pulses results in a step change in the

burst repetition frequency.

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

15 / 33

Before reducing the number of pulses in the next burst, it is ensured that the resulting

repetition rate does not exceed the target frequency. Hence, at any moment in burst-

mode operation, the actual burst repetition rate is within a band under the target

frequency. If the number of burst pulses decreases, the effect of adding a pulse

increases and the band becomes wider (see Figure 10).

Npulses

0 108 12 144 621 11 159 135 73

aaa-023816

1.8

Burst Repetition

Frequency

(kHz)

(2)

(1)

0.2

0.6

0.4

0.8

1.2

1.6

Figure 10. Upper and lower limits of burst frequency

When the burst on time is 1.5 times longer than the target period (tburst), the system

switches to normal mode again.

8.9 Soft start-up (ISENSE pin)

To prevent audible noise during start-up or a restart condition, an integrated soft start

feature is implemented. When the converter starts switching, the primary peak current

slowly increases to the regulated level with 15 steps.

The soft start time constant is 4 ms, set by an internal time.

8.10 Driver (DRIVER pin)

The driver circuit to the gate of the power MOSFET has a current sourcing capability of

300 mA and a current sink capability of 750 mA. These capabilities allow a fast turn-on

and turn-off of the power MOSFET for efficient operation.

The maximum driver output is limited to 10.5 V. The DRIVER output pin can be

connected to the gate of a MOSFET directly or via a resistor.

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

16 / 33

9 Limiting values

Table 5. Limiting values

Symbol Parameter Conditions Min Max Unit

Voltages

VIO(HV) input/output voltage on

pin HV

−0.4 +700 V

VVCCH voltage on pin VCCH dual supply voltage −0.4 +120 V

VVCCL voltage on pin VCCL dual supply voltage - 50 V

VIO(CTRL) input/output voltage on

pin CTRL

−0.4 +12 V

VI(ISENSE) input voltage on pin

ISENSE

−0.4 +12 V

VIO(PROTECT) input/output voltage on

pin PROTECT

current limited −0.4 +5 V

VIO(AUX) input/output voltage on

pin AUX

current limited −5 +5 V

Currents

IIO(AUX) input/output current on

pin AUX

−1.5 +1 mA

IIO(HV) input/output current on

pin HV

−1 +5 mA

IIO(CTRL) input/output current on

pin CTRL

−3 0 mA

IIO(PROTECT) input/output current on

pin PROTECT

−1 +1 mA

IO(DRIVER) output current on pin

DRIVER

δ < 10 % −0.4 +1 A

General

Ptot total power dissipation Tamb < 75 °C - 1 W

Tstg storage temperature −55 +150 °C

Tjjunction temperature −40 +150 °C

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

17 / 33

Symbol Parameter Conditions Min Max Unit

ElectroStatic Discharge

class 1

human body model [1]

pins HV and VCCH - 1000 V

all other pins - 2000 V

VESD electrostatic discharge

voltage

charged device model [2] - 500 V

[1] According to JEDEC JS-001.

[2] According to JEDEC JESD22-C101 and ANSI S5.3.1.

10 Recommended operating conditions

Table 6. Recommended operating conditions

Symbol Parameter Conditions Min Max Unit

Voltages

VIO(HV) input/output voltage on

pin HV

0 380 V

VVCCH voltage on pin VCCH dual supply voltage 0 120 V

VVCCL voltage on pin VCCL dual supply voltage;

continuous

- 45 V

VIO(CTRL) input/output voltage on

pin CTRL

05V

VI(ISENSE) input voltage on pin

ISENSE

05V

VIO(PROTECT) input/output voltage on

pin PROTECT

current limited 0 2 V

VIO(AUX) input/output voltage on

pin AUX

current limited −5 +5 V

Currents

IIO(AUX) input/output current on

pin AUX

−1 +1 mA

IIO(HV) input/output current on

pin HV

0 2 mA

IIO(CTRL) input/output current on

pin CTRL

−1 0 mA

IIO(PROTECT) input/output current on

pin PROTECT

−1 +1 mA

General

Tjjunction temperature −25 +125 °C

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

18 / 33

11 Thermal characteristics

Table 7. Thermal characteristics

Symbol Parameter Conditions Typ Unit

Rth(j-a) thermal resistance from junction

to ambient

JEDEC test board 148 K/W

Rth(j-c) thermal resistance from junction

to case

JEDEC test board 86 K/W

12 Characteristics

Table 8. Characteristics

Limits are production tested at 25 °C and are guaranteed by statistical characterization in the temperature operating range.

VCC = 20 V; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into the IC; unless

otherwise specified.

Symbol Parameter Conditions Min Typ Max Unit

Start-up current source (HV pin)

VHV > 10 V 0.8 1.15 1.5 mAIstartup(HV) start-up current on pin

HV VCC > Vstartup; HV not

sampling

- - 1 μA

Vclamp clamp voltage IHV < 2 mA - - 680 V

Supply voltage management (VCCL pin)

Vstartup start-up voltage 13.4 14.9 16.4 V

Vintregd(VCCL) internal regulated

voltage on pin VCCL

via VCCH; ICC = 0.5 mA 12.1 12.5 12.9 V

Vrestart restart voltage burst mode 9.9 11 12.1 V

Vth(UVLO) undervoltage lockout

threshold voltage

9.0 9.9 10.8 V

Vrst reset voltage 7.75 8.65 9.55 V

VHV = 0 V - 40 - μAICC(startup) start-up supply current

VHV > 10 V −1.45 −1.1 −0.75 mA

ICC(oper) operating supply

current

driver unloaded;

excluding optocurrent

- 600 - μA

ICC(burst) burst mode supply

current

non-switching; excluding

optocurrent

- 250 - μA

ICC(prot) protection supply

current

- 235 - μA

ICC(dch) discharge supply

current

safe restart protection;

VCC > Vstartup

1.45 1.88 2.25 mA

Mains detect (HV pin)

tp(HV) pulse duration on pin

measuring mains

voltage

18.5 20.6 22.7 μs

fmeas(HV) measurement

frequency on pin HV

measuring mains

voltage

0.89 1.0 1.11 kHz

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

19 / 33

Symbol Parameter Conditions Min Typ Max Unit

td(norm)HV normal mode delay

time on pin HV

measuring mains

voltage

6.2 7 7.8 ms

td(burst)HV burst mode delay time

on pin HV

measuring mains

voltage

97 104 115 ms

Ibo(HV) brownout current on pin

552 587 622 μA

Ibi(HV) brownin current on pin

623 663 703 μA

Ibo(hys)HV hysteresis of brownout

current on pin HV

- 76 - μA

Iclamp(HV) clamp current on pin

during measurement

time

- - 1.75 mA

Vmeas(HV) measurement voltage

on pin HV

- 2.9 - V

td(det)bo brownout detection

delay time

- 30 - ms

Peak current control (pin CTRL)

VIO(CTRL) input/output voltage on

pin CTRL

- 2.7 - V

Rint(CTRL) internal resistance on

pin CTRL

- 1.7 - kΩ

IIO(startup)CTRL start-up input/output

current on pin CTRL

−580 −500 −420 μA

Burst mode (pin CTRL)

Ith(burst)CTRL burst mode threshold

current on pin CTRL

−125 −110 −95 μA

Istop(burst)CTRL burst mode stop current

on pin CTRL

−230 −200 −170 μA

Tburst burst mode period - 600 - μs

Oscillator

fsw(max) maximum switching

frequency

120 128 136 kHz

fsw(min) minimum switching

frequency

burst mode ≥ 2 pulses 23 25.5 28 kHz

Current sense (pin ISENSE)

output overpower Vopp(ISENSE) mVVsense(peak) peak sense voltage

burst mode 130 145 160 mV

tPD(sense) sense propagation

delay

from the ISENSE pin

reaching Vsense(max) to

driver off; VISENSE pulse-

stepping 100 mV around

Vsense(max)

- 120 - ns

tleb leading edge blanking

time

275 325 375 ns

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

20 / 33

Symbol Parameter Conditions Min Typ Max Unit

Soft start (pin ISENSE)

tstart(soft) soft start time 3.3 3.7 4.1 ms

Demagnetization and valley control (pin AUX)

Vdet(demag) demagnetization

detection voltage

20 40 60 mV

Iprot(AUX) protection current on

pin AUX

- −200 - nA

tblank(det)demag demagnetization

detection blanking time

1.9 2.3 2.7 μs

positive ΔV/Δt 0.25 0.37 0.49 V/μs(ΔV/Δt)vrec valley recognition

voltage change with

time negative ΔV/Δt −2.45 −1.95 −1.5 V/μs

td(vrec-swon) valley recognition to

switch-on delay time

- 120 - ns

Vclamp(AUX) clamp voltage on pin

AUX

IAUX = 1 mA 4.4 4.8 5.2 V

tsup(xfmr_ring) transformer ringing

suppression time

2.0 2.4 2.8 μs

Maximum on-time (pin DRIVER)

ton(max) maximum on-time 45 55 65 μs

Driver (pin DRIVER)

Isource(DRIVER) source current on pin

DRIVER

VDRIVER = 2 V - −0.3 - A

VDRIVER = 2 V - 0.3 - AIsink(DRIVER) sink current on pin

DRIVER VDRIVER = 10 V - 0.75 - A

VO(DRIVER)max maximum output

voltage on pin DRIVER

9 10.5 12 V

Overpower protection (pin ISENSE and pin AUX)

Vclamp(AUX) clamp voltage on pin

AUX

primary stroke;

IAUX = −0.3 mA

−0.8 −0.7 −0.6 V

td(clamp)AUX clamp delay time on pin

AUX

after rising edge of pin

DRIVER

1.9 2.3 2.7 μs

counter trigger level

IAUX = −0.3 mA 460 510 560 mV

Vopp(ISENSE) overpower protection

voltage on pin ISENSE

IAUX = −1.46 mA 268 298 328 mV

start-up mode;

ICTRL < 100 μA

35.5 40 44.5 mstd(opp) overpower protection

delay time

normal mode 178 200 222 ms

td(restart) restart delay time 890 1000 1110 ms

External protection (pin PROTECT)

Vdet(PROTECT) detection voltage on pin

PROTECT

0.47 0.5 0.53 V

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

21 / 33

Symbol Parameter Conditions Min Typ Max Unit

Vdet(hys)PROTECT detection voltage

hysteresis on pin

PROTECT

- 50 - mV

IO(PROTECT) output current on pin

PROTECT

normal mode −79 −74 −69 μA

Vclamp(PROTECT) clamp voltage on pin

PROTECT

1.2 1.4 1.6 V

Overvoltage protection (pin AUX)

Vovp(AUX) overvoltage protection

voltage on pin AUX

2.88 3 3.12 V

Vovp(VCCL) overvoltage protection

voltage on pin VCCL

46.5 48 49.5 V

tdet(ovp) overvoltage protection

detection time

in the secondary stroke 2 2.4 2.8 μs

Temperature protection

Tpl(IC) IC protection level

temperature

130 140 150 °C

Tpl(IC)hys hysteresis of IC

protection level

temperature

- 10 - °C

12.1 Typical temperature performance characteristics

12.1.1 Start-up voltage

aaa-023936

-40 -10 20 50 80 110 140

14.5

15.5

T (°C)

Vstartup

(V)(V)

Figure 11. start-up voltage as a function of temperature

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

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12.1.2 Undervoltage lockout threshold voltage

aaa-023965

-40 -10 20 50 80 110 140

9.4

9.8

10.2

10.6

T (°C)

Vth(UVLO)

(V)(V)

Figure 12. Undervoltage lockout threshold voltage as a function of temperature

12.1.3 Detection voltage (pin PROTECT)

aaa-023969

-40 -10 20 50 80 110 140

480

490

500

510

520

T (°C)

Vdet(PROTECT)

(mV)(mV)

Figure 13. Detection voltage (pin PROTECT) as a function of temperature

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

23 / 33

12.1.4 Switching frequency

aaa-024157

-40 -10 20 50 80 110 140

100

110

120

130

140

150

T (°C)

fsw

(kHz)(kHz)

Figure 14. Switching frequency as a function of temperature

12.1.5 Overpower protection voltage (pin ISENSE)

aaa-023967

-40 -10 20 50 80 110 140

450

470

490

510

530

550

T (°C)

Vopp(ISENSE)

(mV)(mV)

Figure 15. Overpower protection voltage (pin ISENSE) as a function of temperature

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

24 / 33

12.1.6 Overpower protection (at IAUX = 1.46 mA)

aaa-023968

-40 -10 20 50 80 110 140

260

270

280

290

300

310

320

T (°C)

Vopp

(mV)(mV)

Figure 16. Overpower protection voltage (at IAUX = 1.46 mA) as a function of temperature

12.1.7 Output current (pin PROTECT)

aaa-023970

-40 -10 20 50 80 110 140

-90

-80

-70

-60

-50

T (°C)

IO(PROTECT)

(µA)(µA)

Figure 17. Output current (pin PROTECT) as a function of temperature

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

25 / 33

12.1.8 Overvoltage protection voltage (pin AUX)

aaa-023971

-40 -10 20 50 80 110 140

T (°C)

Vovp(AUX)

Figure 18. Overvoltage protection voltage (pin AUX) as a function of temperature

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

26 / 33

13 Application information

aaa-023269

n.c.

CTRL

GND

PROTECT

DRIVER

ISENSE

AUX

VCCH

VCCL

Dsec

Rsense

RDRIVER

RAUX1

RHV

NTC DVCCH

DVCCL

RAUX2

CVCCH

CVCCL

Cout

Vout

Figure 19. TEA19361T application diagram

aaa-023270

TEA190x

n.c.

CTRL

GND

PROTECT

DRIVER

ISENSE

AUX

VCCH

VCCL

Dsec

Rsense

RDRIVER

RAUX1

RHV

NTC DVCCH

DVCCL

RAUX2

CVCCH

CVCCL

Cout

Vout

VCC

VOUT

OPTO

SGND

ISNS

DISCH

CC1

CC2

D+

D-

Figure 20. TEA19361T application diagram with TEA190xT

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

27 / 33

14 Package outline

References

Outline

version

European

projection Issue date

IEC JEDEC JEITA

SOT1437-1

sot1437-1_po

15-02-09

15-03-06

Dimensions

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

SO10: plastic small outline package; 10 leads; body width 3.9 mm; body thickness 1.35 mm SOT1437-1

Unit

max

nom

min

1.75 0.25 0.49 0.25 6.3

1.27 6.00 0.70

0.70

A A1A2

1.45

A3bpc D(1)

8°

θE(1)

3.9

e HEL

1.05

LpQ

6.20 1.004.0

v w

0.18 0.25 0.43 0.22 6.2 0.1 0.561.35 0.25 0.25

y Z

0.10 0.36 0.19 6.1 0.301.25 5.80

0.65

0.70

0.600.403.8 0°

4°

pin 1 index

(10x)

(8x)

D E A

scale

5 mm

HEv A

detail X

Figure 21. Package outline SOT1437-1 (SO10)

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

28 / 33

15 Abbreviations

Table 9. Abbreviations

Acronym Description

CC Constant Current

CMN Common-Mode Noise

CV Constant Voltage

DCM Discontinuous Conduction Mode

EMI ElectroMagnetic Interference

ESD ElectroStatic Discharge

FR Frequency Reduction

MOSFET Metal-Oxide-Semiconductor Field-Effect Transistor

OCP OverCurrent Protection

OPP OverPower Protection

OTP OverTemperature Protection

OVP OverVoltage Protection

QR Quasi-Resonant

SMPS Switch-Mode Power Supply

SOI Silicon-On_Insulator

UVLO UnderVoltage LockOut

VCO Voltage Controlled Oscillator

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

29 / 33

16 Revision history

Table 10. Revision history

Document ID Release date Data sheet status Change notice Supersedes

TEA19361T v.1 20160809 Product data sheet - -

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

30 / 33

17 Legal information

17.1 Data sheet status

Document status[1][2] Product status[3] Definition

Objective [short] data sheet Development This document contains data from the objective specification for product

development.

Preliminary [short] data sheet Qualification This document contains data from the preliminary specification.

Product [short] data sheet Production This document contains the product specification.

[1] Please consult the most recently issued document before initiating or completing a design.

[2] The term 'short data sheet' is explained in section "Definitions".

[3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple

devices. The latest product status information is available on the Internet at URL http://www.nxp.com.

17.2 Definitions

Draft — The document is a draft version only. The content is still under

internal review and subject to formal approval, which may result in

modifications or additions. NXP Semiconductors does not give any

representations or warranties as to the accuracy or completeness of

information included herein and shall have no liability for the consequences

of use of such information.

Short data sheet — A short data sheet is an extract from a full data sheet

with the same product type number(s) and title. A short data sheet is

intended for quick reference only and should not be relied upon to contain

detailed and full information. For detailed and full information see the

relevant full data sheet, which is available on request via the local NXP

Semiconductors sales office. In case of any inconsistency or conflict with the

short data sheet, the full data sheet shall prevail.

Product specification — The information and data provided in a Product

data sheet shall define the specification of the product as agreed between

NXP Semiconductors and its customer, unless NXP Semiconductors and

customer have explicitly agreed otherwise in writing. In no event however,

shall an agreement be valid in which the NXP Semiconductors product

is deemed to offer functions and qualities beyond those described in the

Product data sheet.

17.3 Disclaimers

Limited warranty and liability — Information in this document is believed

to be accurate and reliable. However, NXP Semiconductors does not

give any representations or warranties, expressed or implied, as to the

accuracy or completeness of such information and shall have no liability

for the consequences of use of such information. NXP Semiconductors

takes no responsibility for the content in this document if provided by an

information source outside of NXP Semiconductors. In no event shall NXP

Semiconductors be liable for any indirect, incidental, punitive, special or

consequential damages (including - without limitation - lost profits, lost

savings, business interruption, costs related to the removal or replacement

of any products or rework charges) whether or not such damages are based

on tort (including negligence), warranty, breach of contract or any other

legal theory. Notwithstanding any damages that customer might incur for

any reason whatsoever, NXP Semiconductors’ aggregate and cumulative

liability towards customer for the products described herein shall be limited

in accordance with the Terms and conditions of commercial sale of NXP

Semiconductors.

Right to make changes — NXP Semiconductors reserves the right to

make changes to information published in this document, including without

limitation specifications and product descriptions, at any time and without

notice. This document supersedes and replaces all information supplied prior

to the publication hereof.

Suitability for use — NXP Semiconductors products are not designed,

authorized or warranted to be suitable for use in life support, life-critical or

safety-critical systems or equipment, nor in applications where failure or

malfunction of an NXP Semiconductors product can reasonably be expected

to result in personal injury, death or severe property or environmental

damage. NXP Semiconductors and its suppliers accept no liability for

inclusion and/or use of NXP Semiconductors products in such equipment or

applications and therefore such inclusion and/or use is at the customer’s own

risk.

Applications — Applications that are described herein for any of these

products are for illustrative purposes only. NXP Semiconductors makes

no representation or warranty that such applications will be suitable

for the specified use without further testing or modification. Customers

are responsible for the design and operation of their applications and

products using NXP Semiconductors products, and NXP Semiconductors

accepts no liability for any assistance with applications or customer product

design. It is customer’s sole responsibility to determine whether the NXP

Semiconductors product is suitable and fit for the customer’s applications

and products planned, as well as for the planned application and use of

customer’s third party customer(s). Customers should provide appropriate

design and operating safeguards to minimize the risks associated with

their applications and products. NXP Semiconductors does not accept any

liability related to any default, damage, costs or problem which is based

on any weakness or default in the customer’s applications or products, or

the application or use by customer’s third party customer(s). Customer is

responsible for doing all necessary testing for the customer’s applications

and products using NXP Semiconductors products in order to avoid a

default of the applications and the products or of the application or use by

customer’s third party customer(s). NXP does not accept any liability in this

respect.

Limiting values — Stress above one or more limiting values (as defined in

the Absolute Maximum Ratings System of IEC 60134) will cause permanent

damage to the device. Limiting values are stress ratings only and (proper)

operation of the device at these or any other conditions above those

given in the Recommended operating conditions section (if present) or the

Characteristics sections of this document is not warranted. Constant or

repeated exposure to limiting values will permanently and irreversibly affect

the quality and reliability of the device.

Terms and conditions of commercial sale — NXP Semiconductors

products are sold subject to the general terms and conditions of commercial

sale, as published at http://www.nxp.com/profile/terms, unless otherwise

agreed in a valid written individual agreement. In case an individual

agreement is concluded only the terms and conditions of the respective

agreement shall apply. NXP Semiconductors hereby expressly objects to

applying the customer’s general terms and conditions with regard to the

purchase of NXP Semiconductors products by customer.

No offer to sell or license — Nothing in this document may be interpreted

or construed as an offer to sell products that is open for acceptance or

the grant, conveyance or implication of any license under any copyrights,

patents or other industrial or intellectual property rights.

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

31 / 33

Quick reference data — The Quick reference data is an extract of the

product data given in the Limiting values and Characteristics sections of this

document, and as such is not complete, exhaustive or legally binding.

Export control — This document as well as the item(s) described herein

may be subject to export control regulations. Export might require a prior

authorization from competent authorities.

Non-automotive qualified products — Unless this data sheet expressly

states that this specific NXP Semiconductors product is automotive qualified,

the product is not suitable for automotive use. It is neither qualified nor

tested in accordance with automotive testing or application requirements.

NXP Semiconductors accepts no liability for inclusion and/or use of non-

automotive qualified products in automotive equipment or applications. In

the event that customer uses the product for design-in and use in automotive

applications to automotive specifications and standards, customer (a) shall

use the product without NXP Semiconductors’ warranty of the product for

such automotive applications, use and specifications, and (b) whenever

customer uses the product for automotive applications beyond NXP

Semiconductors’ specifications such use shall be solely at customer’s own

risk, and (c) customer fully indemnifies NXP Semiconductors for any liability,

damages or failed product claims resulting from customer design and use

of the product for automotive applications beyond NXP Semiconductors’

standard warranty and NXP Semiconductors’ product specifications.

Translations — A non-English (translated) version of a document is for

reference only. The English version shall prevail in case of any discrepancy

between the translated and English versions.

17.4 Trademarks

Notice: All referenced brands, product names, service names and

trademarks are the property of their respective owners.

GreenChip — is a trademark of NXP Semiconductors N.V.

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Product data sheet Rev. 1 — 9 August 2016

32 / 33

Tables

Tab. 1. Ordering information ..........................................3

Tab. 2. Marking codes ...................................................3

Tab. 3. Pin description ...................................................5

Tab. 4. Protections .......................................................10

Tab. 5. Limiting values ................................................ 16

Tab. 6. Recommended operating conditions ............... 17

Tab. 7. Thermal characteristics ................................... 18

Tab. 8. Characteristics .................................................18

Tab. 9. Abbreviations ...................................................28

Tab. 10. Revision history ...............................................29

Figures

Fig. 1. TEA19361T block diagram ................................4

Fig. 2. TEA19361T pin configuration (SO10) ............... 5

Fig. 3. Start-up sequence ............................................. 7

Fig. 4. Modes of operation ........................................... 7

Fig. 5. AUX pin used for demagnetization and input

and output voltage measurement ......................9

Fig. 6. Overpower protection curve ............................ 11

Fig. 7. Optobias regulation ......................................... 13

Fig. 8. Burst mode operation ......................................14

Fig. 9. Transient response in burst mode ...................14

Fig. 10. Upper and lower limits of burst frequency ....... 15

Fig. 11. start-up voltage as a function of temperature ...21

Fig. 12. Undervoltage lockout threshold voltage as a

function of temperature ................................... 22

Fig. 13. Detection voltage (pin PROTECT) as a

function of temperature ................................... 22

Fig. 14. Switching frequency as a function of

temperature ..................................................... 23

Fig. 15. Overpower protection voltage (pin ISENSE)

as a function of temperature ........................... 23

Fig. 16. Overpower protection voltage (at

IAUX = 1.46 mA) as a function of

temperature ..................................................... 24

Fig. 17. Output current (pin PROTECT) as a function

of temperature .................................................24

Fig. 18. Overvoltage protection voltage (pin AUX) as

a function of temperature ................................ 25

Fig. 19. TEA19361T application diagram ..................... 26

Fig. 20. TEA19361T application diagram with

TEA190xT ........................................................26

Fig. 21. Package outline SOT1437-1 (SO10) ...............27

NXP Semiconductors TEA19361T

GreenChip SMPS primary side control IC with

QR/DCM operation

Please be aware that important notices concerning this document and the product(s)

described herein, have been included in section 'Legal information'.

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddresses@nxp.com

Date of release: 9 August 2016

Document identifier: TEA19361T

Contents

1 General description ............................................ 1

2 Features and benefits .........................................2

2.1 General features ................................................ 2

2.2 Green features ...................................................2

2.3 Protection features .............................................2

3 Applications .........................................................2

4 Ordering information .......................................... 3

5 Marking .................................................................3

6 Block diagram ..................................................... 4

7 Pinning information ............................................ 5

7.1 Pinning ............................................................... 5

7.2 Pin description ................................................... 5

8 Functional description ........................................6

8.1 Supply management ..........................................6

8.2 Start-up and UnderVoltage LockOut (UVLO) .....6

8.3 Modes of operation ............................................7

8.4 Mains voltage measuring ...................................8

8.5 Auxiliary winding ................................................ 9

8.6 Protections ....................................................... 10

8.6.1 OverPower Protection (OPP) ...........................10

8.6.2 OverVoltage Protection (OVP; pins AUX and

VCCL) .............................................................. 11

8.6.3 Protection input (PROTECT pin) ..................... 11

8.6.4 OverTemperature Protection (OTP) .................12

8.6.5 Maximum on-time ............................................ 12

8.6.6 Safe restart ...................................................... 12

8.7 Optobias regulation (CTRL pin) .......................12

8.8 Burst mode operation ...................................... 13

8.9 Soft start-up (ISENSE pin) ...............................15

8.10 Driver (DRIVER pin) ........................................ 15

9 Limiting values .................................................. 16

10 Recommended operating conditions .............. 17

11 Thermal characteristics ....................................18

12 Characteristics .................................................. 18

12.1 Typical temperature performance

characteristics .................................................. 21

12.1.1 Start-up voltage ............................................... 21

12.1.2 Undervoltage lockout threshold voltage ...........22

12.1.3 Detection voltage (pin PROTECT) ...................22

12.1.4 Switching frequency .........................................23

12.1.5 Overpower protection voltage (pin ISENSE) ....23

12.1.6 Overpower protection (at IAUX = 1.46 mA) ..... 24

12.1.7 Output current (pin PROTECT) ....................... 24

12.1.8 Overvoltage protection voltage (pin AUX) ........25

13 Application information ....................................26

14 Package outline .................................................27

15 Abbreviations .................................................... 28

16 Revision history ................................................ 29

17 Legal information .............................................. 30