IRS21867SPBF - International Rectifier

31 May, 2011

IRS21867S

HIGH AND LOW SIDE DRIVER

Features

• Floating channel designed for bootstrap operation

• Fully operational to +600V

• Tolerant to negative transient voltage, dV/dt

immune

• Low VCC operation

• Gate drive supply range from 5V to 20V

• Undervoltage lockout for both channels

• 3.3V and 5V input logic compatible

• Matched propagation delay for both channels

• Logic and power ground +/- 5V offset

• Lower di/dt gate driver for better noise immunity

• Output source/sink current capability 4.0A (Typ.)

• Leadfree, RoHS compliant

Applications

• Battery powered equipment

• Hand-tools

• Fork-lifts

• Golf-carts

• RC Hobby Equipment

• E-bike

Product Summary

Topology Single-Phase

V

OFFSET

≤ 600V

V

OUT

10V – 20V

I

o+

& I

o-

(typical) 4.0A & 4.0A

t

on

& t

off

(typical) 170ns & 170ns

Package Options

SOIC-8

Typical Connection Diagram

IRS21867S

Refer to Lead Assignment for correct pin

Configuration. This diagrams show electrical

Connections only. Please refer to our Application

Notes and Design Tips for proper circuit board layout

IRS21867S

Refer to Lead Assignment for correct pin

Configuration. This diagrams show electrical

Connections only. Please refer to our Application

Notes and Design Tips for proper circuit board layout

IRS21867S

2

Table of Contents Page

Typical Connection Diagram 1

Description/Feature Comparison 3

Qualification Information 3

Absolute Maximum Ratings 4

Recommended Operating Conditions 4

Dynamic Electrical Characteristics 5

Static Electrical Characteristics 5

Functional Block Diagram 6

Input/Output Pin Equivalent Circuit Diagram 7

Lead Definitions 8

Lead Assignments 8

Application Information and Additional Details 9

Package Details 17

Tape and Reel Details 18

Part Marking Information 19

Ordering Information 20

IRS21867S

3

Description

The IRS21867 is a high voltage, high speed power MOSFET and IGBT driver with independent high and low

side referenced output channels. Proprietary HVIC and latch immune CMOS technologies enable ruggedized

monolithic construction. Low VCC operation allows use in battery powered applications. The logic input is

compatible with standard CMOS or LSTTL output, down to 3.3 V logic. The output drivers feature a high

pulse current buffer stage designed for minimum driver cross-conduction. The floating channel can be used

to drive an N-channel power MOSFET or IGBT in the high-side configuration which operates up to 600V.

Qualification Information

†

Industrial

††

Qualification Level Comments: This family of ICs has passed JEDEC’s

Industrial qualification. IR’s Consumer qualification level is

granted by extension of the higher Industrial level.

Moisture Sensitivity Level SOIC8N

MSL2

†††

260°C

(per IPC/JEDEC J-STD-020)

Machine Model Class A

(per JEDEC standard JESD22-A115)

ESD

Human Body Model Class 2

(per EIA/JEDEC standard EIA/JESD22-A114)

IC Latch-Up Test Class I, Level A

(per JESD78)

RoHS Compliant Yes

† Qualification standards can be found at International Rectifier’s web site http://www.irf.com/

††

Higher qualification ratings may be available should the user have such requirements. Please contact

your International Rectifier sales representative for further information.

†††

Higher MSL ratings may be available for the specific package types listed here. Please contact your

International Rectifier sales representative for further information.

IRS21867S

4

Absolute Maximum Ratings

Absolute Maximum Ratings indicate sustained limits beyond which damage to the device may occur. All

voltage parameters are absolute voltages referenced to COM. The thermal resistance and power dissipation

ratings are measured under board mounted and still air conditions.

Note 1: All supplies are fully tested at 25V.

Recommended Operating Conditions

For proper operation the device should be used within the recommended conditions. All voltage parameters

are absolute voltages referenced to COM. The V

S

offset rating is tested with all supplies biased at (VCC-

COM) = 15V.

† Note 2: Logic operational for V

S

of -5V to +600V. Logic state held for V

S

of -5V to –V

BS

. (Please refer to

the Design Tip DT97-3 for more details).

Symbol

Definition Min Max Units

V

B

High side floating absolute voltage -0.3 625 (Note 1)

V

S

High side floating supply offset voltage V

B

– 25 V

B

+ 0.3

V

HO

High side floating output voltage V

S

- 0.3 V

B

+ 0.3

V

CC

Low side and logic fixed supply voltage -0.3 25 (Note 1)

V

LO

Low side output voltage -0.3 V

CC

+ 0.3

V

IN

Logic input voltage (HIN & LIN) COM - 0.3

V

CC

+ 0.3

V

dV

S

/dt Allowable offset supply voltage transient — 50 V/ns

P

D

Package power dissipation @ TA ≤ 25°C — 0.625 W

Rth

JA

Thermal resistance, junction to ambient — 200 °C/W

T

J

Junction temperature — 150

T

S

Storage temperature -50 150

T

L

Lead temperature (soldering, 10 seconds) — 300

°C

Symbol

Definition Min Max Units

V

B

High side floating supply absolute voltage V

S

+ 10 V

S

+ 20

V

S

High side floating supply offset voltage Note 2 600

V

HO

High side floating output voltage V

S

V

B

V

CC

Low side and logic fixed supply voltage 10 20

V

LO

Low side output voltage 0 V

CC

V

IN

Logic input voltage (HIN & LIN) COM V

CC

V

T

A

Ambient temperature -40 125 °C

IRS21867S

5

Dynamic Electrical Characteristics

V

CC

= V

BS

= 15V, C

L

= 1000 pF, T

A

= 25°C unless otherwise specified.

Symbol Definition Min

Typ

Max Units

Test Conditions

t

on

Turn-on propagation delay — 170 250

V

S

= 0V

t

off

Turn-off propagation delay — 170 250

V

S

= 0V or 600V

MT

Delay matching | t

on

– t

off

| — — 35

t

r

Turn-on rise time — 22 38

t

f

Turn-off fall time — 18 30

ns

V

S

= 0V

Static Electrical Characteristics

V

CC

= V

BS

= 15V,, and T

A

= 25°C unless otherwise specified. The V

IN

, and I

IN

parameters are referenced to

COM and are applicable to the respective input leads: HIN, and LIN. The V

O

, and I

O

parameters are

referenced to V

S

/COM and are applicable to the respective output leads: HO and LO.

Symbol Definition Min

Typ Max Units

Test Conditions

V

IH

Logic “1” input voltage for HO & LO 2.5 — —

V

IL

Logic “0” input voltage for HO & LO — — 0.8 V

CC

= 10V to 20V

V

OH

High level output voltage, V

CC

or V

BS

- V

O

— — 1.4 I

O

= 0mA

V

OL

Low level output voltage, V

O

— — 0.15

V

I

O

= 20mA

I

LK

Offset supply leakage current — — 50 V

B

=

V

S

= 600 V

I

QBS

Quiescent V

BS

supply current 20 60 150

I

QCC

Quiescent V

CC

supply current 50 120 240

V

IN

= 0V or 5V

I

IN+

Logic “1” input bias current — 250 — HIN = LIN = 5V

I

IN-

Logic “0” input bias current — — 5.0

µA

HIN = LIN = 0V

V

CCUV+

V

BSUV+

V

CC

and V

BS

supply undervoltage positive

going threshold 5.34

6 6.66

V

CCUV-

V

BSUV-

V

CC

and V

BS

supply undervoltage negative

going threshold 4.90

5.50

6.10

V

CCUVH

V

BSUVH

V

CC

and V

BS

supply undervoltage Hysteresis 0.5

V

I

O+

Output high short circuit pulsed current 4.0 V

O

= 0V,

PW ≤ 10µs

I

O-

Output low short circuit pulsed current 4.0

A V

O

= 15V,

PW ≤ 10µs

IRS21867S

6

IRS21867IRS21867

Functional Block Diagrams

IRS21867S

7

Input/Output Pin Equivalent Circuit

Diagrams

VCC

COM/VSS

LO

ESD

Diode

ESD

Diode

VB

VS

HO

ESD

Diode

ESD

Diode

25V

600V

COM

VCC

COM/VSS

LO

ESD

Diode

ESD

Diode

VB

VS

HO

ESD

Diode

ESD

Diode

25V

600V

COM

COMCOM

IRS21867S

8

Lead Definitions: IRS21867S

Pin# Symbol

Description

1 V

CC

Low-side and logic fixed supply

2 HIN Logic input for high-side gate driver output (HO), in phase with HO

3 LIN Logic input for low-side gate driver output (LO), in phase with LO

4 COM Low-side return

5 LO Low-side gate drive output

6 V

S

High-side floating supply return

7 HO High-side gate drive output

8 V

B

High-side floating supply

Lead Assignments

8 lead SOIC

IRS21867S

9

Application Information and Additional Details

Informations regarding the following topics are included as subsections within this section of the datasheet.

• IGBT/MOSFET Gate Drive

• Switching and Timing Relationships

• Matched Propagation Delays

• Input Logic Compatibility

• Undervoltage Lockout Protection

• Negative V

S

Transient SOA

• PCB Layout Tips

• Additional Documentation

IGBT/MOSFET Gate Drive

The IRS21867 HVIC is designed to drive MOSFET or IGBT power devices. Figures 1 and 2 illustrate several

parameters associated with the gate drive functionality of the HVIC. The output current of the HVIC, used to drive

the gate of the power switch, is defined as I

O

. The voltage that drives the gate of the external power switch is

defined as V

HO

for the high-side power switch and V

LO

for the low-side power switch; this parameter is sometimes

generically called V

OUT

and in this case does not differentiate between the high-side or low-side output voltage.

VS

(or COM)

HO

(or LO)

VB

(or VCC)

IO+

VHO (or VLO)

+

-

VS

(or COM)

HO

(or LO)

VB

(or VCC)

IO-

Figure 1: HVIC sourcing current Figure 2: HVIC sinking current

IRS21867S

10

Switching and Timing Relationships

The relationships between the input and output signals of the IRS21867 are illustrated below in Figures 3, 4. From

these figures, we can see the definitions of several timing parameters (i.e., PW

IN

, PW

OUT

, t

ON

, t

OFF

, t

R

, and t

F

)

associated with this device.

LINx

(or HINx) 50% 50%

PWIN

PWOUT

10% 10%

90% 90%

tOFF

tON tRtF

LOx

(or HOx)

Figure 3: Switching time waveforms

Figure 4: Input/output timing diagram

Matched Propagation Delays

The IRS21867 is designed with propagation delay matching circuitry. With this feature, the IC’s response at the

output to a signal at the input requires approximately the same time duration (i.e., t

ON

, t

OFF

) for both the low-side

channels and the high-side channels; the maximum difference is specified by the delay matching parameter (MT).

The propagation turn-on delay (t

ON

) is matched to the propagation turn-on delay (t

OFF

).

IRS21867S

11

Figure 5: Delay Matching Waveform Definition

Input Logic Compatibility

The inputs of this IC are compatible with standard CMOS and TTL outputs. The IRS21867 has been designed to be

compatible with 3.3 V and 5 V logic-level signals. Figure 8 illustrates an input signal to the IRS22867, its input

threshold values, and the logic state of the IC as a result of the input signal.

Input Signal

(IRS23364D)

V

IH

V

IL

Input Logic

Level

High

Low Low

Figure 6: HIN & LIN input thresholds

IRS21867S

12

Undervoltage Lockout Protection

This IC provides undervoltage lockout protection on both the V

CC

(logic and low-side circuitry) power supply and the

V

BS

(high-side circuitry) power supply. Figure 7 is used to illustrate this concept; V

CC

(or V

BS

) is plotted over time and

as the waveform crosses the UVLO threshold (V

CCUV+/-

or V

BSUV+/-

) the undervoltage protection is enabled or disabled.

Upon power-up, should the V

CC

voltage fail to reach the V

CCUV+

threshold, the IC will not turn-on. Additionally, if the

V

CC

voltage decreases below the V

CCUV-

threshold during operation, the undervoltage lockout circuitry will recognize a

fault condition and shutdown the high- and low-side gate drive outputs.

Upon power-up, should the V

BS

voltage fail to reach the V

BSUV

threshold, the IC will not turn-on. Additionally, if the

V

BS

voltage decreases below the V

BSUV

threshold during operation, the undervoltage lockout circuitry will recognize a

fault condition, and shutdown the high-side gate drive outputs of the IC.

The UVLO protection ensures that the IC drives the external power devices only when the gate supply voltage is

sufficient to fully enhance the power devices. Without this feature, the gates of the external power switch could be

driven with a low voltage, resulting in the power switch conducting current while the channel impedance is high; this

could result in very high conduction losses within the power device and could lead to power device failure.

Figure 7: UVLO protection

IRS21867S

13

Tolerant to Negative V

S

Transients

A common problem in today’s high-power switching converters is the transient response of the switch node’s voltage

as the power switches transition on and off quickly while carrying a large current. A typical 3-phase inverter circuit is

shown in Figure 8; here we define the power switches and diodes of the inverter.

If the high-side switch (e.g., the IGBT Q1 in Figures 9 and 10) switches off, while the U phase current is flowing to an

inductive load, a current commutation occurs from high-side switch (Q1) to the diode (D2) in parallel with the low-side

switch of the same inverter leg. At the same instance, the voltage node V

S1

, swings from the positive DC bus voltage

to the negative DC bus voltage.

Figure 8: Three phase inverter

Q1

ON

D2

VS1

Q2

OFF

IU

DC+ BUS

DC- BUS

Figure 9: Q1 conducting Figure 10: D2 conducting

Also when the V phase current flows from the inductive load back to the inverter (see Figures 11 and 12), and Q4

IGBT switches on, the current commutation occurs from D3 to Q4. At the same instance, the voltage node, V

S2

,

swings from the positive DC bus voltage to the negative DC bus voltage.

IRS21867S

14

Figure 11: D3 conducting Figure 12: Q4 conducting

However, in a real inverter circuit, the V

S

voltage swing does not stop at the level of the negative DC bus, rather it

swings below the level of the negative DC bus. This undershoot voltage is called “negative V

S

transient”.

The circuit shown in Figure 13 depicts one leg of the three phase inverter; Figures 14 and 15 show a simplified

illustration of the commutation of the current between Q1 and D2. The parasitic inductances in the power circuit from

the die bonding to the PCB tracks are lumped together in L

C

and L

E

for each IGBT. When the high-side switch is on,

V

S1

is below the DC+ voltage by the voltage drops associated with the power switch and the parasitic elements of the

circuit. When the high-side power switch turns off, the load current momentarily flows in the low-side freewheeling

diode due to the inductive load connected to V

S1

(the load is not shown in these figures). This current flows from the

DC- bus (which is connected to the COM pin of the HVIC) to the load and a negative voltage between V

S1

and the

DC- Bus is induced (i.e., the COM pin of the HVIC is at a higher potential than the V

S

pin).

Figure 13: Parasitic Elements Figure 14: V

S

positive Figure 15: V

S

negative

In a typical motor drive system, dV/dt is typically designed to be in the range of 3-5 V/ns. The negative V

S

transient

voltage can exceed this range during some events such as short circuit and over-current shutdown, when di/dt is

greater than in normal operation.

International Rectifier’s HVICs have been designed for the robustness required in many of today’s demanding

applications. An indication of the IRS21867’s robustness can be seen in Figure 16, where there is represented the

IRS2607 Safe Operating Area at V

BS

=15V based on repetitive negative V

S

spikes. A negative V

S

transient voltage

falling in the grey area (outside SOA) may lead to IC permanent damage; viceversa unwanted functional anomalies

or permanent damage to the IC do not appear if negative Vs transients fall inside SOA.

IRS21867S

15

Figure 16:

Negative V

S

transient SOA for IRS2607 @ VBS=15V

Even though the IRS21867 has been shown able to handle these large negative V

S

transient conditions, it is highly

recommended that the circuit designer always limit the negative V

S

transients as much as possible by careful PCB

layout and component use.

PCB Layout Tips

Distance between high and low voltage components: It’s strongly recommended to place the components tied to the

floating voltage pins (V

B

and V

S

) near the respective high voltage portions of the device. Please see the Case

Outline information in this datasheet for the details.

Ground Plane: In order to minimize noise coupling, the ground plane should not be placed under or near the

high voltage floating side.

Gate Drive Loops: Current loops behave like antennas and are able to receive and transmit EM noise (see

Figure 17). In order to reduce the EM coupling and improve the power switch turn on/off performance, the

gate drive loops must be reduced as much as possible. Moreover, current can be injected inside the gate

drive loop via the IGBT collector-to-gate parasitic capacitance. The parasitic auto-inductance of the gate

loop contributes to developing a voltage across the gate-emitter, thus increasing the possibility of a self

turn-on effect.

IRS21867S

16

Figure 17: Antenna Loops

Supply Capacitor: It is recommended to place a bypass capacitor (C

IN

) between the V

CC

and COM pins. A

ceramic 1 µF ceramic capacitor is suitable for most applications. This component should be placed as close

as possible to the pins in order to reduce parasitic elements.

Routing and Placement: Power stage PCB parasitic elements can contribute to large negative voltage

transients at the switch node; it is recommended to limit the phase voltage negative transients. In order to

avoid such conditions, it is recommended to 1) minimize the high-side emitter to low-side collector distance,

and 2) minimize the low-side emitter to negative bus rail stray inductance. However, where negative V

S

spikes remain excessive, further steps may be taken to reduce the spike. This includes placing a resistor (5

Ω or less) between the V

S

pin and the switch node (see Figure 18), and in some cases using a clamping

diode between COM and V

S

(see Figure 19). See DT04-4 at www.irf.com for more detailed information.

Figure 18: V

S

resistor Figure 19: V

S

clamping diode

Additional Documentation

Several technical documents related to the use of HVICs are available at www.irf.com; use the Site Search

function and the document number to quickly locate them. Below is a short list of some of these documents.

DT97-3: Managing Transients in Control IC Driven Power Stages

DT04-4: Using Monolithic High Voltage Gate Drivers

AN-978: HV Floating MOS-Gate Driver ICs

IRS21867S

17

Package Details: SOIC8N

IRS21867S

18

Tape and Reel Details: SOIC8N

E

F

A

C

D

G

A

B

H

NOTE : CONTROLLING

DIM ENSION IN M M

LOADED TAPE FEED DIRECTION

A

H

F

E

G

D

B

C

CARRIER TAPE DIMENSION FOR 8SOICN

Code Min Max Min Max

A 7.90 8.10 0.311 0.318

B 3.90 4.10 0.153 0.161

C 11.70 12.30 0.46 0.484

D 5.45 5.55 0.214 0.218

E 6.30 6.50 0.248 0.255

F 5.10 5.30 0.200 0.208

G 1.50 n/a 0.059 n/a

H 1.50 1.60 0.059 0.062

Metric Imperial

REEL DIMENSIONS FOR 8SOICN

Code Min Max Min Max

A 329.60 330.25 12.976 13.001

B 20.95 21.45 0.824 0.844

C 12.80 13.20 0.503 0.519

D 1.95 2.45 0.767 0.096

E 98.00 102.00 3.858 4.015

F n/a 18.40 n/a 0.724

G 14.50 17.10 0.570 0.673

H 12.40 14.40 0.488 0.566

Metric Imperial

IRS21867S

19

Part Marking Information

IRS21867S

20

Ordering Information

P/n Package Packing Pcs

IRS21867SPbF SOIC8 Tube 95

IRS21867STRPbF SOIC8 Tape & Reel 2500

IRS21867S

21

The information provided in this document is believed to be accurate and reliable. However, International Rectifier assumes no

responsibility for the consequences of the use of this information. International Rectifier assumes no responsibility for any

infringement of patents or of other rights of third parties which may result from the use of this information. No license is granted by

implication or otherwise under any patent or patent rights of International Rectifier. The specifications mentioned in this document are

subject to change without notice. This document supersedes and replaces all information previously supplied.

For technical support, please contact IR’s Technical Assistance Center

http://www.irf.com/technical-info/

WORLD HEADQUARTERS:

233 Kansas St., El Segundo, California 90245

Tel: (310) 252-7105

Revision History

Date Comment

5/20/2010 Initial Draft

6/10/2010

Changed ABS MAX to 25V,

Updated Iin+ to 250uA(Typ) to reflect 20kohm pull-down,

Removed Min spec (2A) from Io+/Io-,

Updated Block Diagram based on IRS2188 D/S

03/30/2011 Add recommended operation condition note

05/27/2011 Add ESD and Latch up specs

05/31/2011 Add application info and ordering info