Quick Start
Required Equipment
• ±36V to ±72V power supply capable of providing up
to 3A
• Voltmeter
• A fan to provide at least 100LFM airflow for extend-
ed operation at 15A
• 100µF, 100V bulk storage capacitor to be connect-
ed to the input terminals of the EV kit
The MAX5051 EV kit is fully assembled and tested.
Follow these steps to verify board operation. Do not
turn on the power supply until all connections are
completed.
Forward DC-DC Converter
No-Load Output
1) Connect a jumper wire from the VOUT terminal to
the SENSE(+) terminal.
2) Connect a jumper wire from the SGND terminal to
the SENSE(-) terminal.
3) Connect a voltmeter to the SENSE(+) and SENSE(-)
terminals to measure the output voltage.
Evaluates: MAX5051
MAX5051 Evaluation Kit
_______________________________________________________________________________________ 3
Component List (continued)
DESIGNATION QTY DESCRIPTION
N1, N2 2
100V, 7.3A N-channel MOSFETs
(8-pin SO) IR IRF7495 or
Vishay Siliconix Si4486EY
N3, N4 2
20V, 20A N-channel MOSFETs
(8-pin SO)
IR IRF7832 or
Vishay Siliconix Si4864DY
N5 1
170mA, 100V N-channel MOSFET
(SOT23)
Fairchild BSS123
R1 1 11.5kΩ ±1% resistor (0603)
R2 1 2.55kΩ ±1% resistor (0603)
R3 1 2.2kΩ ±5% resistor (0603)
R4 1 1MΩ ±1% resistor (0603)
R5 1 38.3kΩ ±1% resistor (0603)
R6 1 1MΩ ±1% resistor (0805)
R7, R20 2 0Ω ±5% resistors (0603)
R8, R9 2 8.2Ω ±5% resistors (0603)
R10 1 20Ω ±5% resistor (1206)
R11 1 360Ω ±5% resistor (0603)
R12 1 100kΩ ±1% resistor (0603)
R13 1 47Ω ±5% resistor (1206)
R14 1 270Ω ±5% resistor (0603)
R15 1 31.6kΩ ±1% resistor (0603)
R16 1 10.5kΩ ±1% resistor (0603)
R17 1
0.027Ω ±1%, 0.5W resistor (1206)
IRC LR1206-01-R027-F
R18 1 4.7Ω ±5% resistor (1206)
R19 1 475Ω ±1% resistor (0805)
R21 1 24.9kΩ ±1% resistor (0805)
R22 1 15kΩ ±5% resistor (1206)
DESIGNATION QTY DESCRIPTION
R23, R24 2 10Ω ±5% resistors (0805)
R25 1 100kΩ ±5% resistor (0805)
R26 1 560Ω ±5% resistor (0805)
R27 1 10Ω ±5% resistor (0603)
R28 1 2kΩ ±5% resistor (0805)
R29 1 1Ω ±5% resistor (0603)
T1 1
Planar transformer
Pulse Engineering PA0370 or
Payton Planar Magnetics Ltd. 50659*
U1 1 MAX5051AUI (28-pin TSSOP)
U2 1
High-speed, high-voltage
photocoupler (ultra small flat lead)
CEL/NEC PS2913-1-F3-M
U3 1
0.6V ±0.5% shunt regulator (5-pin
SOT23)
Maxim MAX8515AEZK-T
U4, U7 2
7.6A MOSFET drivers (6-pin SOT23)
Maxim MAX5048AAUT-T
U5 1
65V high-voltage linear regulator
(8-pin SO)
Maxim MAX5023MASA
U6 1
10Mbps photocoupler (5-pin SOP)
CEL/NEC PS9715-F3
+VIN, -VIN,
ON/OFF,
SENSE(+),
SENSE(-), TRIM
6 0.040in PC pins
VOUT, SGND 2 0.062in PC pins
None 1 MAX5051 PC board
*Modifications to the PC board traces are required to evaluate
this component.
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