1
DC-to-DC Converter
M57145L-01
Powerex, Inc., 200 E. Hillis Street, Youngwood, Pennsylvania 15697-1800 (724) 925-7272
Hybrid Gate Drive
Power Supply
Description:
M57145L-01 is a DC-to-DC
converter designed to provide
isolated power for IGBT gate
drive. When supplied with an
input voltage of 12V to 18V DC the
M57145L-01 will produce a
+15.8V / -8.2V output suitable for
use with Powerex hybrid IGBT
gate drivers. The isolation between
the primary and secondary of the
M57145L-01 has been optimized
to provide the high dv/dt noise
immunity required in IGBT
power circuits.
Features:
□Wide Input Voltage Range:
12V to 18V DC
□Isolated, Regulated Output:
24 VDC @ 100mA
□Output Over Current
Protection
□Built-in 8.2V Off-bias Supply
Regulator
□Primary to Secondary Isolation
2500 VRMS
□Small Footprint – SIP Design
Applications:
Isolated power supply for Powerex
hybrid IGBT gate drivers:
M57957L, M57958L, M57159L,
M57959L, M57962L, and
M57962CL in general purpose
inverters, AC servo, and power
supply applications.
Block Diagram
Outline Drawing
Test Circuit
8
9
10
11
PMW
CONTROL
CIRCUIT
V1+ VO1+
3.3K
VO2+
VO–
V1–
CONSTANT
VOLTAGE
CIRCUIT
111
FEEDBACK CIRCUIT
33 MAX
25.4 MAX
24 MAX
4.5 MAX
2.54 ± 0.1
4.5 MAX
5.5 MAX 13.5 MAX
19 MAX
8
9
10
11
M57145L
V1
3
2
1
IGBT
DRIVER
+
+
+
100 µF
50V
22 µF
47 µF
2
M57145L-01
DC-to-DC Conver ter
Hybrid Gate Drive Power Supply
Powerex, Inc., 200 E. Hillis Street, Youngwood, Pennsylvania 15697-1800 (724) 925-7272
Absolute Maximum Ratings, Ta = 25°C unless otherwise specified
Item Symbol Test Conditions Limit Units
Input Voltage VI—18Volts
Load Current 1 IL1 3 pin Output Current 100* mA
Operating Temperature T opr No Condensation -10 ~ 70 °C
Storage Temperature tstg No Condensation -20 ~ 85 °C
Electrical Isolation between Input and Outputs VRMS Sinewave Voltage, 60Hz, 1 min. 2500 Volts
Electrical Characteristics, Ta = 25°C, VIN = 15V unless otherwise specified
Characteristics Symbol Test Conditions Min. Typ. Max. Units
Input Voltage VIRecommended Range 12 — 18 Volts
Output V oltage 1 VO1 3 pin Voltage, IO = 0 ~ 60mA 22.8 24.0 25.2 Volts
Output V oltage 2 VO2 2 pin Voltage, No Load of 2 , 3 pins 7.96 8.2 8.43 Volts
Input Regulation Reg-I IL = 60mA, V1 = 12 ~ 18V, — — 50 mV
No Load of 2 pin
Load Regulation Reg-L IL = 0 ~ 60mA, No Load of 2 pin — — 50 mV
Efficiency IL = 60mA, No Load of 2 pin — 68 — %
*Refer to the Derating Characteristic Curve.
LOAD CURRENT, IL1, (mA)
EFFICIENCY,
, (%)
EFFICIENCY VS. LOAD CURRENT
100
0204060
80
60
40
20
010080
INPUT VOLTAGE, VI, (VOLTS)
INPUT CURRENT, I, (mA)
INPUT CURRENT VS. INPUT VOLTAGE
400
051015
300
200
100
0
Ta = 25°C
IL = 60 mA
20
INPUT VOLTAGE, VI, (VOLTS)
OUTPUT VOLTAGE, VO, (VOLTS)
OUTPUT VOLTAGE VS. INPUT VOLTAGE
051015
25
30
20
10
15
5
0
Ta = 25°C
20
Ta = 25°C
VI = 12V
VI = 18V VI = 15V
AMBIENT TEMPERATURE, Ta, (°C)
LOAD CURRENT, IL, (mA)
LOAD CURRENT DERATING CHARACTERISTIC
120
140
0204060
100
80
60
40
20
010080
Ta = 25°C
VI = 12V
VI = 18V
IL = 60 mA
IL = 100 mA
IL = 0 mA
