ERICSSOnl
Standard Application
Features
Up to 15-A Output Current
3.3-V Input Voltage
Wide-Output Voltage Adjust
(0.8 V to 2.5 V)
Efficiencies up to 95 %
125 W/in³ Power Density
On/Off Inhibit
Output Voltage Sense
Pre-Bias Startup
Output Over-Current Protection
(Non-Latching, Auto-Reset)
Rset = Resistor to set the desired output
voltage (see spec. table for values)
Cin = Required electrolytic 470 µF
Cout = Recommended 330 µF electrolytic
Auto-Track Sequencing(1)
Margin Up/Down Controls
Under-Voltage Lockout
Operating Temp: 40 to +85 °C
DSP Compatible Output Voltages
IPC Lead Free 2
Safety Agency Approvals (Pend-
ing) UL 1950, CSA 22.2 950, &
EN60950
Point-of-load Alliance (POLA)
Compatible
Description
The PMG 4318 T series of non-isolated
power modules are small in size but big on perfor-
mance and flexibility. Their high
output current, compact footprint, and indus-
try-leading features offers system designers a
versatile module for powering complex multi-
processor digital systems.
The series employs double-sided surface mount
construction and provides high-performance
step-down power conversion for up to 15 A of
output current from a 3.3-V input bus voltage.
The output voltage of the PMG 4318 T can be set
to any value over the range, 0.8 V to 2.5 V, using
a single resistor.
This series includes Auto-Track™.
Auto-Track ™ simplifies the task of supply
voltage sequencing in a power system by en-
abling modules to track each other, or any
external voltage, during power up and power
down.
Other operating features include an on/off
inhibit, output voltage adjust (trim), and margin
up/down controls. To ensure tight load regula-
tion, an output voltage sense is also provided.
A non-latching over-current trip serves as
load fault protection.
Target applications include complex multi-
voltage, multi-processor systems that incorporate
the industry’s high-speed DSPs, micro-processors
and bus drivers.
Pin Configuration
Pin Function
1 GND
2V
in
3 Inhibit *
4V
o Adjust
5V
o Sense
6V
out
7 GND
8 Track
9 Margin Down *
10 Margin Up *
* Denotes negative logic:
Open = Normal operation
Ground = Function active
NOMINAL SIZE = 1.37 in x 0.62 in
(34,8 mm x 15,75 mm)
PMG 4318 T 3.3-V Input
15-A, 3.3-V Input Non-Isolated
Wide-Output Adjust Power Module
PMG 4318 T Datasheet © Ericsson Power Modules, June 2004
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Note: (1) Auto-Track is a trademark of Texas Instruments
POLA code: PTH03010 W
ERICSSOnl
Pin Descriptions
Vin: The positive input voltage power node to the module,
which is referenced to common GND.
Vout: The regulated positive power output with respect to the
GND node.
GND: This is the common ground connection for the Vin
and Vout power connections. It is also the 0 VDC reference for
the control inputs.
Inhibit: The Inhibit pin is an open-collector/drain negative logic
input that is referenced to GND. Applying a low-level ground
signal to this input disables the module’s output and turns off
the output voltage. When the Inhibit control is active, the
input current drawn by the regulator is significantly reduced.
If the Inhibit pin is left open-circuit, the module will pro-
duce an output whenever a valid input source is applied.
Vo Adjust: A 0.5 %, 0.1 W resistor must be connected be-
tween this pin and the GND pin to set the output voltage to
the desired value. The set point range for the output voltage is
from 0.8 V to 2.5 V. The resistor required for a given output
voltage may be calculated from the following formula. If left
open circuit, the module output will default to its lowest output
voltage value. For further information on the adjustment and/or
trimming of the output voltage, consult the related application
note.
Rset = 10 kW· 0.8 V – 2.49 kW
Vout – 0.8 V
The specification table gives the preferred resistor values for a
number of standard output voltages.
Vo Sense: The sense input allows the regulation circuit to com-
pensate for voltage drop between the module and the load.
For optimal voltage accuracy Vo Sense should be connected to
Vout. It can also be left disconnected.
Track: This is an analog control input that enables the output
voltage to follow an external voltage. This pin becomes active
typically 20 ms after the input voltage has been applied, and
allows direct control of the output voltage from 0 V up to the
nominal set-point voltage. Within this range the output will
follow the voltage at the Track pin on a volt-for-volt basis.
When the control voltage is raised above this range, the module
regulates at its set-point voltage. The feature allows the out-
put voltage to rise simultaneously with other modules powered
from the same input bus. If unused, the input may be left un-
connected. Note: Due to the under-voltage lockout feature, the output of
the module cannot follow its own input voltage during power up. For more
information, consult the related application note.
Margin Down: When this input is asserted to GND, the output
voltage is decreased by 5% from the nominal. The input requires
an open-collector (open-drain) interface. It is not TTL compat-
ible. A lower percent change can be accomodated with a
series resistor. If unused, this input may be left unconnected.
For further information, consult the related application note.
Margin Up: When this input is asserted to GND, the output
voltage is increased by 5%. The input requires an open-collector
(open-drain) interface. It is not TTL compatible. The percent
change can be reduced with a series resistor. If unused, this
input may be left unconnected. For further information, con-
sult the related application note.
PMG 4318 T 3.3-V Input
15-A, 3.3-V Input Non-Isolated
Wide-Output Adjust Power Module
PMG 4318 T Datasheet © Ericsson Power Modules, June 2004
2
Product Table (PMG 4318 T x)(1)
VO / IO max PO max
2.95-3.65 V 0.8-2.5 V /15 A 37.5 W
Ordering Information
Delivery Option M.o.q. Suffix Example
Tray 25 pcs /B PMG 4318T P /B
Tape & Reel (2) 250 pcs /C PMG 4318T S /C
(2) Tape & Reel available only for SMD packages
Package Code(1) Description
P Horiz. T/H
S SMD, Standard
(1) Replace xin the Ordering No. with Package Code.
Ordering No.
PMG 4318 T x(1)
VIn
ERICSSOnl
Environmental & Absolute Maximum Ratings (Voltages are with respect to GND)
Characteristics Symbols Conditions Min Typ Max Units
Track Input Voltage Vtrack –0.3 — Vin + 0.3 V
Operating Temperature Range T
aOver Vin Range –40 — 85 °C
Solder Reflow Temperature Treflow Surface temperature of module body or pins 235 (i) °C
Storage Temperature T
s— –40 — 125 °C
Mechanical Shock Per Mil-STD-883D, Method 2002.3 — 500 — G’s
1 msec, ½ Sine, mounted
Mechanical Vibration Mil-STD-883D, Method 2007.2 — 2 0 — G’s
20-2000 Hz
Weight — — 5 — grams
Flammability — Meets UL 94V-O
Notes: (i) During reflow of SMD package version do not elevate peak temperature of the module, pins or internal components above the stated
maximum.
Specifications (Unless otherwise stated, Ta =25 °C, Vin =3.3 V, Vout =2 V, Cin =470 µF, Cout =0 µF, and Io =Iomax)
PTH03010W
Characteristics Symbols Conditions Min Typ Max Units
Output Current Io0.8 V £ Vo £ 2.5 V, 60 °C, 200 LFM airflow 0 — 1 5 (1) A
25 °C, natural convection 0 — 1 5 (1)
Input Voltage Range Vin Over Io range 2.95 (2) — 3.65 V
Set-Point Voltage Tolerance Vo tol — — ±2 (3) %Vo
Temperature Variation DRegtemp –40 °C <Ta < +85 °C — ±0.5 — %Vo
Line Regulation DRegline Over Vin range — ±10 — mV
Load Regulation DRegload Over Io range — ±12 — mV
Total Output Variation DRegtot Includes set-point, line, load, ——±3
(3) %Vo
–40 °C £ Ta £ +85 °C
Efficiency hIo =10 A RSET = 2.21 kWVo = 2.5 V — 93 —
RSET = 4.12 kWVo = 2.0 V — 92 —
RSET = 5.49 kWVo = 1.8 V — 91 — %
RSET = 8.87 kWVo = 1.5 V — 89 —
RSET = 17.4 kWVo = 1.2 V — 87 —
RSET = 36.5 kWVo = 1.0 V — 85 —
Vo Ripple (pk-pk) Vr20 MHz bandwidth — 20 — mVpp
Over-Current Threshold Io trip Reset, followed by auto-recovery — 27.5 — A
Transient Response 1 A/µs load step, 50 to 100 % Iomax,
Cout =330 µF
ttr Recovery Time — 70 — µSec
DVtr Vo over/undershoot — 100 — mV
Margin Up/Down Adjust Vo adj — ± 5 — %
Margin Input Current (pins 9 /10) IIL margin Pin to GND — – 8 (4) —µA
Track Input Current (pin 8) IIL track Pin to GND — — –130 (5) µA
Track Slew Rate Capability dVtrack/dt ½Vtrack – Vo ½£ 50 mV and Vtrack < Vo(nom) 5 — — V/ms
Under-Voltage Lockout UVLO Vin increasing — 2.8 2.95 V
Vin decreasing 2.2 2.7 —
Inhibit Control (pin3) Referenced to GND
Input High Voltage VIH Vin –0.5 — Open (5) V
Input Low Voltage VIL –0.2 — 0.8
Input Low Current IIL inhibit Pin to GND — –130 — µA
Input Standby Current Iin inh Inhibit (pin 3) to GND, Track (pin 8) open — 10 — mA
Switching Frequency ƒsOver Vin and Io ranges 275 300 325 kHz
External Input Capacitance Cin 470 (6) ——µF
External Output Capacitance Cout 0 330 (7) 3,300 µF
Reliability MTBF Per Bellcore TR-332 5.7 — — 106 Hrs
50 % stress, Ta =40 °C, ground benign
Notes: (1) See SOA curves or consult factory for appropriate derating.
(2) The minimum input voltage is equal to 2.95 V or Vout + 0.65 V, whichever is greater.
(3) The set-point voltage tolerance is affected by the tolerance and stability of RSET. The stated limit is unconditionally met if RSET has a tolerance of 1 % with
100 ppm/°C or better temperature stability.
(4) A small low-leakage (<100 nA) MOSFET is recommended to control this pin. The open-circuit voltage is less than 1 Vdc.
(5) This control pin has an internal pull-up to the input voltage Vin. If it is left open-circuit the module will operate when input power is applied. A small low-
leakage (<100 nA) MOSFET is recommended for control. For further information, consult the related application note.
(6) A 470-µF electrolytic input capacitor is required for proper operation. The capacitor must be rated for a minimum of 700 mArms of ripple current.
(7) An external output capacitor is not required for basic operation. Adding 330 µF of distributed capacitance at the load will improve the transient response.
PMG 4318 T 3.3-V Input
15-A, 3.3-V Input Non-Isolated
Wide-Output Adjust Power Module
PMG 4318 T Datasheet © Ericsson Power Modules, June 2004 3
ERICSSOnl
Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the converter.
Note B: SOA curves represent the conditions at which internal components are at or below the manufacturers maximum operating temperatures.
Derating limits apply to modules soldered directly to a 4 in. ´ 4 in. double-sided PCB with 1 oz. copper.
Typical Characteristics
Characteristic Data; Vin =3.3V (See Note A)
Efficiency vs Load Current
Power Dissipation vs Load Current
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Output Ripple vs Load Current
Safe Operating Area; Vin =3.3 V (See Note B)
Output Voltage =2.5 V
Output Voltage =1 V
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PMG 4318 T 3.3-V Input
15-A, 3.3-V Input Non-Isolated
Wide-Output Adjust Power Module
PMG 4318 T Datasheet © Ericsson Power Modules, June 2004
4
ERICSSOnl
Standard Application
Features
Up to 15-A Output Current
5-V Input Voltage
Wide-Output Voltage Adjust
(0.8 V to 3.6 V)
Efficiencies up to 96 %
160 W/in³ Power Density
On/Off Inhibit
Output Voltage Sense
Pre-Bias Startup
Margin Up/Down Controls
Rset = Resistor to set the desired output
voltage (see spec. table for values)
Cin = Required electrolytic 470 µF
Cout = Recommended 330 µF electrolytic
Auto-Track Sequencing(1)
Under-Voltage Lockout
Output Over-Current Protection
(Non-Latching, Auto-Reset)
Surface Mountable
Operating Temp: 40 to +85 °C
DSP Compatible Output Voltages
IPC Lead Free 2
Point-of-Load Alliance (POLA)
Compatible
Description
The PMG 5518 T series of non-isolated
power modules are small in size but big on
performance and flexibility. Their high out-
put current, compact footprint, and
industry-leading features offers system
designers a versatile module for powering com-
plex multi-processor digital systems.
The series employs double-sided surface
mount construction and provides high-per-
formance step-down power conversion for up
to 15 A of output current from a 5-V input
bus voltage. The output voltage of the PMG
5518 T can be set to any value over the range,
0.8 V to 3.6 V, using a single resistor.
This series includes Auto-Track™.
Auto-Track simplifies the task of supply
voltage sequencing in a power system by en-
abling modules to track each other, or any
external voltage, during power up and power
down.
Other operating features include an on/off
inhibit, output voltage adjust (trim), and mar-
gin up/down controls. To ensure tight load
regulation, an output voltage sense is also
provided. A non-latching over-current trip
serves as load fault protection.
Target applications include complex
multi-voltage, multi-processor systems that
incorporate the industry’s high-speed DSPs,
micro-processors and bus drivers.
Pin Configuration
Pin Function
1 GND
2V
in
3 Inhibit *
4V
o Adjust
5V
o Sense
6V
out
7 GND
8 Track
9 Margin Down *
10 Margin Up *
* Denotes negative logic:
Open = Normal operation
Ground = Function active
NOMINAL SIZE = 1.37 in x 0.62 in
(34,8 mm x 15,75 mm)
PMG 5518 T 5-V Input
15-A, 5-V Input Non-Isolated
Wide-Output Adjust Power Module
PMG 5518 T Datasheet © Ericsson Power Modules, June 2004
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Note: (1) Auto-Track is a trademark of Texas Instruments
POLA code: PTH05010 W
ERICSSOnl
Pin Descriptions
GND: This is the common ground connection for the Vin and
Vout power connections. It is also the 0 VDC reference for the
control inputs.
Vin: The positive input voltage power node to the module, which
is referenced to common GND.
Inhibit: The Inhibit pin is an open-collector/drain negative logic
input that is referenced to GND. Applying a low-level ground
signal to this input disables the module’s output and turns off
the output voltage. When the Inhibit control is active, the input
current drawn by the regulator is significantly reduced. If the
Inhibit pin is left open-circuit, the module will produce an
output whenever a valid input source is applied.
Vo Adjust: A 0.1 W, 1 % tolerance (or better) resistor must be
directly connected between this pin and pin 7 (GND) pin to set
the output voltage to the desired value. The set point range for the
output voltage is from 0.8 V to 3.6 V. The resistor required for a
given output voltage may be calculated from the following
formula. If left open circuit, the module output will default to its
lowest output voltage value. For further information on output
voltage adjustment consult the related application note.
Rset =10 kW 0.8 V 2.49 kW
Vout 0.8 V
The specification table gives the preferred resistor values for a number
of standard output voltages.
Vo Sense: The sense input allows the regulation circuit to compen-
sate for voltage drop between the module and the load. For
optimal voltage accuracy Vo Sense should be connected to Vout.
It can also be left disconnected.
Vout: The regulated positive power output with respect to the
GND node.
Track: This is an analog control input that allows the output
voltage to follow another voltage during power-up and power-
down sequences. The pin is active from 0 V up to the nominal
set-point voltage. Within this range the module’s output will
follow the voltage at the Track pin on a volt-for-volt basis. When
the control voltage is raised above this range, the module regulates
at its nominal output voltage. If unused, this input may be left
unconnected. For further information consult the related application
note.
Margin Down: When this input is asserted to GND, the output
voltage is decreased by 5% from the nominal. The input requires an
open-collector (open-drain) interface. It is not TTL compatible. A
lower percent change can be accomodated with a series resistor. For
further information, consult the related application note.
Margin Up: When this input is asserted to GND, the output
voltage is increased by 5%. The input requires an open-collector
(open-drain) interface. It is not TTL compatible. The percent
change can be reduced with a series resistor. For further informa-
tion, consult the related application note.
PMG 5518 T Datasheet © Ericsson Power Modules, June 2004
15-A, 5-V Input Non-Isolated
Wide-Output Adjust Power Module
PMG 5518 T 5-V Input
6
Product Table (PMG 5518 T x)(1)
VO / IO max PO max
4.5-5.5 V 0.8-3.6 V /15 A 54 W
Ordering Information
Delivery Option M.o.q. Suffix Example
Tray 25 pcs /B PMG 5518T P /B
Tape & Reel (2) 250 pcs /C PMG 5518T S /C
(2) Tape & Reel available only for SMD packages
Package Code(1) Description
P Horiz. T/H
S SMD, Standard
(1) Replace xin the Ordering No. with Package Code.
Ordering No.
PMG 5518 T x(1)
VIn
ERICSSOnl
Environmental & Absolute Maximum Ratings (Voltages are with respect to GND)
Characteristics Symbols Conditions Min Typ Max Units
Track Input Voltage Vtrack –0.3 — Vin + 0.3 V
Operating Temperature Range T
aOver Vin Range –40 — 85 °C
Solder Reflow Temperature Treflow Surface temperature of module body or pins 215 (i) °C
Storage Temperature T
s— –40 — 125 °C
Mechanical Shock Per Mil-STD-883D, Method 2002.3 — 500 — G’s
1 msec, ½ Sine, mounted
Mechanical Vibration Mil-STD-883D, Method 2007.2 Suffix H — 20 — G’s
20-2000 Hz Suffix S — 15 —
Weight — — 5 — grams
Flammability — Meets UL 94V-O
Notes: (i) During reflow of SMD package version do not elevate peak temperature of the module, pins or internal components above the stated maximum.
For further guidance refer to the application note, Reflow Soldering Requirements for Plug-in Power Surface Mount Products.
Specifications (Unless otherwise stated, Ta =25 °C, Vin =5 V, Vo =3.3 V, Cin =470 µF, Cout =0 µF, and Io =Iomax)
PTH05010W
Characteristics Symbols Conditions Min Typ Max Units
Output Current Io0.8 V £ Vo £ 3.6 V 60 °C, 200 LFM airflow 0 — 1 5 (1) A
25 °C, natural convection 0 — 1 5 (1)
Input Voltage Range Vin Over Io range 4.5 — 5.5 V
Set-Point Voltage Tolerance Vo tol — — ±2 (2) %Vo
Temperature Variation DRegtemp –40 °C <Ta < +85 °C — ±0.5 — %Vo
Line Regulation DRegline Over Vin range — ±10 — mV
Load Regulation DRegload Over Io range — ±12 — mV
Total Output Variation DRegtot Includes set-point, line, load, ——±3
(2) %Vo
–40 °C £ Ta £ +85 °C
Efficiency hIo =10 A RSET = 698 WVo = 3.3 V — 9 5 —
RSET = 2.21 kWVo = 2.5 V — 93 —
RSET = 4.12 kWVo = 2.0 V — 92 — %
RSET = 5.49 kWVo = 1.8 V — 91 —
RSET = 8.87 kWVo = 1.5 V — 90 —
RSET = 17.4 kWVo = 1.2 V — 88 —
RSET = 36.5 kWVo = 1.0 V — 86 —
Vo Ripple (pk-pk) Vr20 MHz bandwidth — 30 — mVpp
Over-Current Threshold Io trip Reset, followed by auto-recovery — 27.5 — A
Transient Response 1 A/µs load step, 50 to 100 % Iomax,
Cout =330 µF
ttr Recovery Time — 70 — µSec
DVtr Vo over/undershoot — 100 — mV
Margin Up/Down Adjust DVo margin — ± 5 — %
Margin Input Current (pins 9 /10) IIL margin Pin to GND — – 8 (3) —µA
Track Input Current (pin 8) IIL track Pin to GND — — –130 (4) µA
Track Slew Rate Capability dVtrack/dt ½Vtrack – Vo ½£ 50 mV and Vtrack < Vo(nom) 5 — — V/ms
Under-Voltage Lockout UVLO Vin increasing — 4.3 4.45 V
Vin decreasing 3.4 3.7 —
Inhibit Control (pin3) Referenced to GND
Input High Voltage VIH Vin –0.5 — Open (4) V
Input Low Voltage VIL –0.2 — 0.8
Input Low Current IIL inhibit Pin to GND — –130 — µA
Input Standby Current Iin inh Inhibit (pin 3) to GND, Track (pin 8) open — 10 — mA
Switching Frequency ƒsOver Vin and Io ranges 275 300 325 kHz
External Input Capacitance Cin 470 (5) ——µF
External Output Capacitance Cout 0 330 (6) 15,000 µF
Reliability MTBF Per Bellcore TR-332 5.7 — — 106 Hrs
50 % stress, Ta =40 °C, ground benign
Notes: (1) See SOA curves or consult factory for appropriate derating.
(2) The set-point voltage tolerance is affected by the tolerance and stability ofRSET. The stated limit is unconditionally met if RSET has a tolerance of 1 % with
200 ppm/°C or better temperature stability.
(3) A small low-leakage (<100 nA) MOSFET is recommended to control this pin. The open-circuit voltage is less than 1 Vdc.
(4) This control pin has an internal pull-up to the input voltage Vin. If it is left open-circuit the module will operate when input power is applied. A small low-
leakage (<100 nA) MOSFET is recommended for control. For further information, consult the related application note.
(5) A 470 µF electrolytic input capacitor is required for proper operation. The capacitor must be rated for a minimum of 700 mA rms of ripple current.
(6) An external output capacitor is not required for basic operation. Adding 330 µF of distributed capacitance at the load will improve the transient response.
PMG 5518 T 5-V Input
15-A, 5-V Input Non-Isolated
Wide-Output Adjust Power Module
PMG 5518 T Datasheet © Ericsson Power Modules, June 2004 7
ERICSSOnl
Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter.
Note B: SOA curves represent the conditions at which internal components are at or below the manufacturers maximum operating temperatures.
Derating limits apply to modules soldered directly to a 4-layer PCB with 1 oz. copper.
Typical Characteristics
Characteristic Data; Vin =5 V (See Note A)
Efficiency vs Load Current
Power Dissipation vs Load Current
Output Ripple vs Load Current
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Output Voltage =3.3 V
Output Voltage =1 V
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PMG 5518 T 5-V Input
15-A, 5-V Input Non-Isolated
Wide-Output Adjust Power Module
PMG 5518 T Datasheet © Ericsson Power Modules, June 2004
8
Application Notes
ERICSSOnl
Adjusting the Output Voltage of the PMG 4318 T &
PMG 5518 T Wide-Output Adjust Power Modules
The Vo Adjust control (pin 4) sets the output voltage of the
PMG 4318 T and PMG 5518 T products. The adjustment
range of the PMG 4318 T (3.3-V input) is from 0.8 V to
2.5 V 1, and the PMG 5518 T (5-V input) from 0.8 V to 3.6 V.
The adjustment method requires the addition of a single exter-
nal resistor, Rset, that must be connected directly between the Vo
Adjust and GND pins 2. Table 1-1 gives the preferred value of the
external resistor for a number of standard voltages, along with the
actual output voltage that this resistance value provides.
For other output voltages the value of the required resistor can
either be calculated using the following formula, or simply
selected from the range of values given in Table 1-2. Figure 1-1
shows the placement of the required resistor.
Rset = 10 kW0.8 V 2.49 kW
Vout 0.8 V
Figure 1-1; Vo Adjust Resistor Placement
Notes:
1. Modules that operate from a 3.3-V input bus
should not be adjusted higher than 2.5 V.
2. Use a 0.1 W resistor. The tolerance should be 1 %,
with temperature stability of 100 ppm/°C (or better).
Place the resistor as close to the regulator as possible.
Connect the resistor directly between pins 4 and 7
using dedicated PCB traces.
3. Never connect capacitors from Vo Adjust to either
GND or Vout. Any capacitance added to the Vo Adjust
pin will affect the stability of the regulator.
0.800 Open
0.825 318 kW
0.850 158 kW
0.875 104 kW
0.900 77.5 kW
0.925 61.5 kW
0.950 50.8 kW
0.975 43.2 kW
1.000 37.5 kW
1.025 33.1 kW
1.050 29.5 kW
1.075 26.6 kW
1.100 24.2 kW
1.125 22.1 kW
1.150 20.4 kW
1.175 18.8 kW
1.200 17.5 kW
1.225 16.3 kW
1.250 15.3 kW
1.275 14.4 kW
1.300 13.5 kW
1.325 12.7 kW
1.350 12.1 kW
1.375 11.4 kW
1.400 10.8 kW
1.425 10.3 kW
1.450 9.82 kW
1.475 9.36 kW
1.50 8.94 kW
1.55 8.18 kW
1.60 7.51 kW
1.65 6.92 kW
1.70 6.4 kW
1.75 5.93 kW
1.80 5.51 kW
1.85 5.13 kW
1.90 4.78 kW
1.95 4.47 kW
Vout (Standard) Rset (Prefd Value) Vout (Actual)
3.3 V 1698 W3.309 V
2.5 V 2.21 kW2.502 V
2 V 4.12 kW2.010 V
1.8 V 5.49 kW1.803 V
1.5 V 8.87 kW1.504 V
1.2 V 17.4 kW1.202 V
1 V 36.5 kW1.005 V
0.8 V Open 0.8 V
Table 1-1; Preferred Values of Rset for Standard Output Voltages
PMG 4318 T & PMG 5518 T
Table 1-2; Output Voltage Set-Point Resistor Values
Va Reqd Rset Va Reqd Rset
2.00 4.18 kW
2.05 3.91 kW
2.10 3.66 kW
2.15 3.44 kW
2.20 3.22 kW
2.25 3.03 kW
2.30 2.84 kW
2.35 2.67 kW
2.40 2.51 kW
2.45 2.36 kW
2.50 2.22 kW
2.55 2.08 kW
2.60 1.95 kW
2.65 1.83 kW
2.70 1.72 kW
2.75 1.61 kW
2.80 1.51 kW
2.85 1.41 kW
2.90 1.32 kW
2.95 1.23 kW
3.00 1.15 kW
3.05 1.07 kW
3.10 988 W
3.15 914 W
3.20 843 W
3.25 775 W
3.30 710 W
3.35 647 W
3.40 587 W
3.45 529 W
3.50 473 W
3.55 419 W
3.60 367 W
PMG 5518 T Datasheet © Ericsson Power Modules, June 2004
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PMG 4318 T & PMG 5518 T Series
Table 2-1: Recommended Input/Output Capacitors
Capacitor Recommendations for the PMG 4318
T & PMG 5518 T Series of Power Modules
Input Capacitor
The recommended input capacitor(s) is determined by the
470 µF minimum capacitance, and 700 mA rms minimum ripple
current rating.
Ripple current and <100 mW equivalent series resistance
(ESR) values are the major considerations, along with tem-
perature, when designing with different types of capacitors.
Tantalum capacitors have a recommended minimum voltage
rating of twice 2´ (the maximum DC voltage + AC ripple).
This is standard practice for tantalum capacitors to insure reli-
ability.
Output Capacitors (Optional)
The recommended ESR of the capacitors is equal to or less than
150 mW. Electrolytic capacitors have marginal ripple perfor-
mance at frequencies greater than 400 kHz but excellent low
frequency transient response. Above the ripple frequency, ce-
ramic capacitors are necessary to improve the transient
response and reduce any high frequency noise components
apparent during higher current excursions. Preferred low-ESR
type capacitor part numbers are identified in Table 2-1.
Tantalum Capacitors
Tantalum type capacitors can be used for the output but only
the AVX TPS, Sprague 593D/594/595 or Kemet T495/T510
series. These capacitors are recommended over many other tan-
talum types due to their higher rated surge, power dissipation,
and ripple current capability. As a caution, the TAJ series by
AVX is not recommended. This series has considerably higher
ESR, reduced power dissipation, and lower ripple current capa-
bility. The TAJ series is less reliable than the AVX TPS series
when determining power dissipation capability. Tantalum, ceramic
or Os-con types are recommended for applications where ambi-
ent temperatures fall below 0 °C.
Ceramic capacitors may be substituted for electrolytic types
with the minimum capacitor value for improved ripple reduc-
tion on the input and output bus.
Capacitor Table
Table 1 identifies the characteristics of capacitors from a num-
ber of vendors with acceptable ESR and ripple current (rms)
ratings. The number of capacitors required at both the input
and output buses is identified for each capacitor type.
This is not an extensive capacitor list. Capacitors from other vendors are
available with comparable specifications. Those listed are for guidance. The
RMS ripple current rating and ESR are the critical parameters necessary to
insure both optimum regulator performance and long capacitor life.
PMG 5518 T Datasheet © Ericsson Power Modules, June 2004
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Standard Application
Features
Up to 12-A Output Current
12-V Input Voltage
Wide-Output Voltage Adjust
(1.2 V to 5.5 V)
Efficiencies up to 94 %
200 W/in³ Power Density
On/Off Inhibit
Output Voltage Sense
Margin Up/Down Controls
Under-Voltage Lockout
Auto-Track Sequencing(1)
Output Over-Current Protection
(Non-Latching, Auto-Reset)
Operating Temp: 40 to +85 °C
IPC Lead Free 2
Safety Agency Approvals (Pending)
UL 1950, CSA 22.2 950, &
EN60950
Point of Load Alliance (POLA)
Compatible
Description
The PMG 8618 L is a non-isolated power
module that is small in size but big on per-
formance and flexibility. The high output
current, compact footprint, and industry-
leading features offers system designers a
versatile module for powering complex multi-
processor digital systems.
The series employs double-sided surface
mount construction and provides high-
performance step-down power conversion for up
to 12 A of output current. The output volt-
age of the PMG 8618 L can be set to any value
over the range, 1.2 V to 5.5 V, using a single
resistor. This series includes Auto-Track™
Sequencing.
Auto-Track simplifies the task of supply
voltage sequencing in a power system by
enabling modules to track each other, or any
external voltage, during power up and power
down. Other operating features include an
on/off inhibit, output voltage adjust (trim), and
margin up/down controls. For improved load
regulation, an output voltage sense is also
provided. A non-latching over-current trip
serves as load fault protection.
Target applications include complex
multi-voltage, multi-processor systems that
incorporate the industry’s high-speed DSPs,
micro-processors and bus drivers.
Pin Configuration
Pin Function
1 GND
2V
in
3 Inhibit *
4V
o Adjust
5V
o Sense
6V
out
7 GND
8 Track
9 Margin Down *
10 Margin Up *
* Denotes negative logic:
Open = Normal operation
Ground = Function active
NOMINAL SIZE = 1.37 in x 0.62 in
(34,8 mm x 15,75 mm)
Rset = Required to set the output voltage to
a value higher than 1.2 V. (See specifi-
cation table for values)
Cin = Required 560 µF electrolytic capacitor
Cout = Optional 330 µF electrolytic capacitor
PMG 8618 L 12-V Input
12-A, 12-V Input Non-Isolated
Wide-Output Adjust Power Module
PMG 8618 L Datasheet © Ericsson Power Modules, June 2004
Note: (1) Auto-Track is a trademark of Texas Instruments
POLA code: PTH12010 W
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Pin Descriptions
GND: This is the common ground connection for the Vin
and Vout power connections. It is also the 0 VDC reference for
the control inputs.
Vin: The positive input voltage power node to the module,
which is referenced to common GND.
Inhibit: The Inhibit pin is an open-collector/drain negative logic
input that is referenced to GND. Applying a low-level ground
signal to this input disables the module’s output and turns off
the output voltage. When the Inhibit control is active, the
input current drawn by the regulator is significantly reduced.
If the Inhibit pin is left open-circuit, the module will pro-
duce an output whenever a valid input source is applied.
Vo Adjust: A 1 % 0.1 W resistor must be directly connected be-
tween this pin and pin 7 (GND) to set the output voltage to a
value higher than 1.2 V. The temperature stability of the
resistor should be 100 ppm/°C or better. The set point range is
from 1.2 V to 5.5 V. The resistor required for a given output
voltage may be calculated from the following formula. If left
open circuit the output voltage will default to its lowest value.
For further information on output voltage adjustment consult
the related application note.
Rset = 10 kW 0.8 V 1.82 kW
Vout 1.2 V
The specification table gives the preferred resistor values for a
number of standard output voltages.
Vo Sense: The sense input allows the regulation circuit to com-
pensate for voltage drop between the module and the load.
For optimal voltage accuracy Vo Sense should be connected to
Vout. It can also be left disconnected.
Vout: The regulated positive power output with respect to the
GND node.
Track: This is an analog control input that allows the output
voltage to follow another voltage during power-up and power-
down sequences. The pin is active from 0 V up to the nominal
set-point voltage. Within this range the module’s output will
follow the voltage at the Track pin on a volt-for-volt basis.
When the control voltage is raised above this range, the module
regulates at its nominal output voltage. If unused, this input
maybe left unconnected. For further information consult the
related application note.
Margin Down: When this input is asserted to GND, the output
voltage is decreased by 5% from the nominal. The input requires
an open-collector (open-drain) interface. It is not TTL compat-
ible. A lower percent change can be accomodated with a series
resistor. For further information, consult the related application
note.
Margin Up: When this input is asserted to GND, the output
voltage is increased by 5%. The input requires an open-collector
(open-drain) interface. It is not TTL compatible. The percent
change can be reduced with a series resistor. For further infor-
mation, consult the related application note.
PMG 8618 L Datasheet © Ericsson Power Modules, June 2004
PMG 8618 L 12-V Input
12-A, 12-V Input Non-Isolated
Wide-Output Adjust Power Module
12
Product Table (PMG 8618 T x)(1)
VO / IO max PO max
10.8-13.2 V 1.2-5.5 V /12 A 66 W
Ordering Information
Delivery Option M.o.q. Suffix Example
Tray 25 pcs /B PMG 8618L P /B
Tape & Reel (2) 250 pcs /C PMG 8618L S /C
(2) Tape & Reel available only for SMD packages
Package Code(1) Description
P Horiz. T/H
S SMD, Standard
(1) Replace xin the Ordering No. with Package Code.
Ordering No.
PMG 8618 T x(1)
VIn
ERICSSOnl
Environmental & Absolute Maximum Ratings (Voltages are with respect to GND)
Characteristics Symbols Conditions Min Typ Max Units
Track Input Voltage Vtrack –0.2 — Vin V
Operating Temperature Range T
aOver Vin Range –40 (i) — 85 °C
Solder Reflow Temperature Treflow Surface temperature of module body or pins 215 (ii) °C
Storage Temperature T
s— –40 — 125 °C
Mechanical Shock Per Mil-STD-883D, Method 2002.3 — 500 — G’s
1 msec, ½ Sine, mounted
Mechanical Vibration Mil-STD-883D, Method 2007.2 — 2 0 — G’s
20-2000 Hz
Weight — — 5 — grams
Flammability — Meets UL 94V-O
Notes: (i) For operation below 0 °C the external capacitors must have stable characteristics. Use either a low-ESR tantalum, Os-Con, or ceramic capacitor.
(ii) During reflow of SMD package version do not elevate peak temperature of the module, pins or internal components above the stated maximum.
For further guidance refer to the application note, Reflow Soldering Requirements for Plug-in Power Surface Mount Products.
Specifications (Unless otherwise stated, Ta =25 °C, Vin =12 V, Vout =3.3 V, Cin=560 µF, Cout =0 µF, and Io =Iomax)
PTH12010W
Characteristics Symbols Conditions Min Typ Max Units
Output Current Io1.2 V £ Vo £ 5.5 V 60 °C, 200 LFM airflow 0 — 12 (1) A
25 °C, natural convection 0 — 1 2 (1)
Input Voltage Range Vin Over Io range 10.8 — 13.2 V
Set-Point Voltage Tolerance Vo tol — — ±2 (2) %Vo
Temperature Variation DRegtemp –40 °C <Ta < +85 °C — ±0.5 — %Vo
Line Regulation DRegline Over Vin range — ±10 — mV
Load Regulation DRegload Over Io range — ±12 — mV
Total Output Variation DRegtot Includes set-point, line, load, ——±3(
2) %Vo
–40 °C £ Ta £ +85 °C
Efficiency hIo =8 A RSET = 280 WVo = 5.0 V — 9 4 —
RSET = 2.0 kWVo = 3.3 V — 93 —
RSET = 4.32 kWVo = 2.5 V — 91 —
RSET = 8.06 kWVo = 2.0 V — 90 — %
RSET = 11.5 kWVo = 1.8 V — 89 —
RSET = 24.3 kWVo = 1.5 V — 88 —
RSET = open cct Vo = 1.2 V — 86 —
Vo Ripple (pk-pk) Vr20 MHz bandwidth Vo £2.5 V — 25 — mVpp
Vo >2.5 V — 1 — % Vo
Over-Current Threshold Io trip Reset, followed by auto-recovery — 2 0 — A
Transient Response 1 A/µs load step, 50 to 100 % Iomax,
Cout =330 µF
ttr Recovery Time — 70 — µSec
DVtr Vo over/undershoot — 100 — mV
Margin Up/Down Adjust Vo adj — ± 5 — %
Margin Input Current (pins 9 /10) IIL margin Pin to GND — – 8 (3) —µA
Track Input Current (pin 8) IIL track Pin to GND — — –0.13 (4) mA
Track Slew Rate Capability dVtrack/dt ½Vtrack – Vo ½£ 50 mV and Vtrack < Vo(nom) 5 — — V/ms
Under-Voltage Lockout UVLO Vin increasing — 9.5 10.4 V
Vin decreasing 8.8 9 —
Inhibit Control (pin3) Referenced to GND
Input High Voltage VIH Vin –0.5 — Open (4) V
Input Low Voltage VIL –0.2 — 0.5
Input Low Current IIL inhibit Pin to GND — –0.24 — mA
Input Standby Current Iin inh Inhibit (pin 3) to GND, Track (pin 8) open — 10 — mA
Switching Frequency ƒsOver Vin and Io ranges 300 350 400 kHz
External Input Capacitance Cin 560 (5) ——µF
External Output Capacitance Cout 0 330 (6) 10,000 µF
Reliability MTBF Per Bellcore TR-332 6.4 — — 106 Hrs
50 % stress, Ta =40 °C, ground benign
Notes:(1) See SOA curves or consult factory for appropriate derating.
(2) The set-point voltage tolerance is affected by the tolerance and stability of RSET. The stated limit is unconditionally met if RSET has a tolerance of 1 %, with 100 ppm/°C (or better) temperature stability.
(3) A small low-leakage (<100 nA) MOSFET is recommended to control this pin. The open-circuit voltage is less than 1 Vdc.
(4) This control pin has an internal pull-up to the input voltage Vin (7.5 V for pin 8). If it is left open-circuit the module will operate when input power is applied. A small low-leakage (<100 nA) MOSFET is recommended for control.
(5) A 560 µF electrolytic input capacitor are required for proper operation. The electrolytic capacitor must be rated for a minimum of 800 mA rms of ripple current. For further information, consult the related application note regarding capacitor
selection.
(6) An external output capacitor is not required for basic operation. Adding 330 µF of distributed capacitance at the load will improve the transient response.
PMG 8618 L 12-V Input
12-A, 12-V Input Non-Isolated
Wide-Output Adjust Power Module
PMG 8618 L Datasheet © Ericsson Power Modules, June 2004 13
ERICSSOnl
Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter.
Note B: SOA curves represent the conditions at which internal components are at or below the manufacturers maximum operating temperatures.
Derating limits apply to modules soldered directly to a 4 in. ´ 4 in. double-sided PCB with 1 oz. copper.
Typical Characteristics
Characteristic Data; Vin =12 V (See Note A)
Efficiency vs Load Current
Power Dissipation vs Load Current
Output Ripple vs Load Current
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Output Voltage =5 V
Output Voltage =3.3 V
Output Voltage 1.8 V
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PMG 8618 T Datasheet © Ericsson Power Modules, June 2004
PMG 8618 T 12-V Input
12-A, 12-V Input Non-Isolated
Wide-Output Adjust Power Module
14
Application Notes
ERICSSOnl
Adjusting the Output Voltage of the PMG 8618 L
Wide-Output Adjust Power Module
The Vo Adjust control (pin 4) is used to set the output volt-
age to a value higher than 1.2 V. The adjustment method
requires the addition of a single external resistor, Rset, that must
be connected directly between the Vo Adjust and GND pins 1.
Table 1-1 gives the preferred value for the external resistor for a
number of standard voltages, along with the actual output
voltage that this resistance value provides.
For other output voltages the value of the required resistor can
either be calculated using the following formula, or simply
selected from the range of values given in Table 1-2. Figure 1-1
shows the placement of the required resistor.
Rset = 10 kW0.8 V 1.82 kW
Vout 1.2 V
Figure 1-1; Vo Adjust Resistor Placement
Notes:
1. Use a 0.1 W resistor. The tolerance should be 1 %,
with temperature stability of 100 ppm/°C (or better).
Place the resistor as close to the regulator as possible.
Connect the resistor directly between pins 4 and 7
using dedicated PCB traces.
2. Never connect capacitors from Vo Adjust to either
GND or Vout. Any capacitance added to the VoAdjust
pin will affect the stability of the regulator.
1.200 Open
1.225 318 kW
1.250 158 kW
1.275 105 kW
1.300 78.2 kW
1.325 62.2 kW
1.350 51.5 kW
1.375 43.9 kW
1.400 38.2 kW
1.425 33.7 kW
1.450 30.2 kW
1.475 27.3 kW
1.50 24.8 kW
1.55 21 kW
1.60 18.2 kW
1.65 16 kW
1.70 14.2 kW
1.75 12.7 kW
1.80 11.5 kW
1.85 10.5 kW
1.90 9.61 kW
1.95 8.85 kW
2.00 8.18 kW
2.05 7.59 kW
2.10 7.07 kW
2.15 6.6 kW
2.20 6.18 kW
2.25 5.8 kW
2.30 5.45 kW
2.35 5.14 kW
2.40 4.85 kW
2.45 4.85 kW
2.50 4.33 kW
2.55 4.11 kW
2.60 3.89 kW
2.65 3.7 kW
2.70 3.51 kW
Vout (Standard) Rset (Prefd Value) Vout (Actual)
5 V 280 W5.009 V
3.3 V 2 kW3.294V
2.5 V 4.32 kW2.503 V
2 V 8.06 kW2.010V
1.8 V 11.5 kW1.801 V
1.5 V 24.3 kW1.506 V
1.2 V Open 1.200 V
Table 1-1; Preferred Values of Rset for Standard Output Voltages
PMG 8618 L
Table 1-2; Output Voltage Set-Point Resistor Values
Va Reqd Rset Va Reqd Rset
2.75 3.34 kW
2.80 3.18 kW
2.85 3.03 kW
2.90 2.89 kW
2.95 2.75 kW
3.00 2.62 kW
3.05 2.5 kW
3.10 2.39 kW
3.15 2.28 kW
3.20 2.18 kW
3.25 2.08 kW
3.30 1.99 kW
3.35 1.9 kW
3.40 1.82 kW
3.45 1.74 kW
3.50 1.66 kW
3.55 1.58 kW
3.6 1.51 kW
3.7 1.38 kW
3.8 1.26 kW
3.9 1.14 kW
4.0 1.04 kW
4.1 939 W
4.2 847 W
4.3 761 W
4.4 680 W
4.5 604 W
4.6 533 W
4.7 466 W
4.8 402 W
4.9 342 W
5.0 285 W
5.1 231 W
5.2 180 W
5.3 131 W
5.4 85 W
5.5 41 W
PMG 8618 T Datasheet © Ericsson Power Modules, June 2004 15
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PMG 8618 L Series
(1) N/R Not recommended. The voltage rating does not meet the minimum operating limits.
Table 2-1: Input/Output Capacitors
Tantalum Capacitors
Tantalum type capacitors can be used for the output but only
the AVX TPS, Sprague 593D/594/595 or Kemet T495/T510
series. These capacitors are recommended over many other
tantalum types due to their higher rated surge, power dissipa-
tion, and ripple current capability. As a caution the TAJ series
by AVX is not recommended. This series has considerably
higher ESR, reduced power dissipation, and lower ripple cur-
rent capability. The TAJ series is also less reliable than the
AVX TPS series when determining power dissipation capabil-
ity. Tantalum or Oscon® types are recommended for
applications where ambient temperatures fall below 0°C.
Ceramic Capacitors
Ceramic capacitors will compliment electrolytic types. Adding
10 µF to 47 µF of ceramic capacitance will reduce ripple on the
input and output bus. Output ripple and transient measure-
ment accuracy is improved by measuring directly across a 10 µF
ceramic capacitor.
Capacitor Table
Table 2-1 identifies the characteristics of capacitors from a number
of vendors with acceptable ESR and ripple current (rms) ratings.
The number of capacitors required at both the input and output
buses is identified for each capacitor type.
This is not an extensive capacitor list. Capacitors from other vendors are
available with comparable specifications. Those listed are for guidance.
The RMS ripple current rating and ESR (at 100 kHz) are critical
parameters necessary to insure both optimum regulator performance and
long-term reliability.
Capacitor Recommendations for the PMG 8718 T
Series of Plug-in Power Modules
Input Capacitor
The recommended input capacitance is determined by 800 mA
rms minimum ripple current rating and 560 µF minimum
capacitance.
Ripple current and <100 mW equivalent series resistance
(ESR) values are the major considerations, along with tem-
perature, when designing with different types of capacitors.
Tantalum capacitors have a recommended minimum voltage
rating of 2 ´ (max. DC voltage + AC ripple). This is necessary
to insure reliability for input voltage bus applications. Tanta-
lum capacitors are not recommended on the input bus.
Output Capacitors (Optional)
The recommended ESR of the output capacitor is less than
or equal to 150 mW. Electrolytic capacitors have marginal
ripple performance at frequencies greater than 400 kHz but
excellent low frequency transient response. Above the ripple
frequency, ceramic capacitors are necessary to improve the
transient response and reduce any high frequency noise compo-
nents apparent during higher current excursions. Preferred
low-ESR capacitor part numbers are identified in Table 2-1.
PMG 8618 T Datasheet © Ericsson Power Modules, June 2004
16
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scitsiretcarahCroticapaCy titnauQ
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)TMS(AWcinosanaP
laidaR-CF
)TMS(KF
V61
V52
V52
V53
033
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0001
086
220.0 Ω
090.0 Ω
060.0 Ω
060.0 Ω
Am0014>
Am557
Am0011
Am0011
01 ×2.01
01 ×5.21
5.21 ×5.31
5.21 ×5.31
2
2
1
1
1
1
1
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seireSSP
ZXL
)TMS(AXP
V61
V61
V61
V61
033
033
086
3x081
810.0 Ω
410.0 Ω
860.
0Ω
620.0 Ω
Am0054
Am0505>
Am0501
Am0043>
01 ×5.01
01 ×5.21
01 ×61
01 ×7.7
2
2
1
3
1
1
1
1
M033XF61
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PT08JM181CV61AXP
nocihciN
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GW
V52
V52
V53
V52
065
086
065
033
060.0 Ω
550.0 Ω
840.0 Ω
51.0 ÷2Ω
Am0601
Am0721
Am063
1
Am0001>
5.21 ×51
61 ×51
61 ×51
01 ×01
1
1
1
2
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V61
V61
072
033
810.0 Ω
610.0 Ω
Am0053>
Am0074
01 ×5.01
11 ×21
2
2
1
1
M072PS61
M033PVS61
mulatnaTXVA
SPT)TMS(
V01
V01
033
03
3
01.0 Ω
60.0 Ω
Am0052>
Am0003>
L3.7
×W7.5
×H1.4
R/N
)1(
R/N
)1(
1
1
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0600R010M733VSPT V(
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V01
V01
033
022
40.0 Ω
70.0 Ω
Am0061
Am0002>
W3.4
×L3.7
×H0.4
R/N
)1(
R/N
)1(
1
1
SA010M733X025 V(
o
)V1.5<
SA0010M722X594T V(
o
)V1.5<
mulatnaTeugarpS
)TMS(seireSD495
V01033540.0 ΩAm0632L2.7
×W6
×H1.4
R/N
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1T2R0100X733D495 V(
o
)V1.5<
PMG Series Mechanical data
PMG Series Datasheet © Ericsson Power Modules, June 2004 19
PMG Series Mechanical data
PMG Series Datasheet © Ericsson Power Modules, June 2004
20
21 EN/LZT 146 076 R1A © Ericsson Power Modules, June 2004
PMG Series Datasheet
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Phone: +44-1869-233-992
Fax: +44-1869-232-307
All other countries
Contact Company Headquarters
or visit our website:
www.ericsson.com/powermodules
Information given in this data sheet is believed to be accurate and reliable.
No re sponsibility is assumed for the con sequences of its use nor for any infringement
of patents or other rights of third parties which may result from its use.
No license is grant ed by implication or otherwise under any patent or patent rights of
Ericsson Power Modules. These products are sold only ac cording to
Ericsson Power Modules’ general conditions of sale, unless oth
erwise con fi rmed in
writing. Specifi
cations subject to change without notice.
