MAX17500AEVKIT Maxim Integrated Products, MAX17500AEVKIT Datasheet - Page 3

• Manufacturer Part Number: MAX17500AEVKIT
• Description: Power Management Modules & Development Tools
• Manufacturer: Maxim Integrated Products

Note: Indicate that you are using the MAX17500A when contacting these component suppliers.
• MAX17500A EV kit
• +36V to +72V power supply capable of providing up
• Two voltmeters
• 22µF, +100V bulk-storage capacitor to be connected
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation. Caution: Do not turn on
the power supply until all connections are completed.
1) Connect the first voltmeter to the VOUT1 and SGND
2) Connect the second voltmeter to the VOUT2 and
3) Connect a 750mA load to VOUT1 and a 50mA load to
4) Verify that a shunt is not installed on jumper JU1
5) Connect the power supply’s positive terminal to the
6) Turn on the power supply above +36V and verify that
7) Verify that the voltmeter at VOUT2 reads approxi-
The maximum current for each output should be limited
to less than 1.5A for VOUT1 and 100mA for VOUT2.
Central Semiconductor Corp.
Cooper Bussmann
Diodes Incorporated
Fair-Rite Products Corp.
International Rectifier
IRC, Inc.
KEMET Corp.
Murata Electronics North America, Inc.
Panasonic Corp.
TDK Corp.
Vishay
Zetex Semiconductor (now a Division of Diodes Incorporated)
to 1A
to the input terminals on the EV kit
PCB pads.
SGND PCB pads.
VOUT2.
(SHDN).
+VIN PCB pad. Connect the power supply’s ground
to the -VIN PCB pad.
the voltmeter at VOUT1 reads approximately +5V.
mately +15V.
_________________________________________________________________ Maxim Integrated Products 3
SUPPLIER
Required Equipment
Quick Start
Procedure
For instructions on selecting the feedback resistors for
other output voltages, see the Evaluating Other Output
Voltages, Current Limits, and Undervoltage Lockouts
section.
The MAX17500A EV kit is a fully assembled and tested
circuit board that contains a 9W isolated flyback DC-DC
converter that provides a +5V and +15V output. The
+5V output (V
output (V
powered from either a +36V to +72V or -36V to -72V DC
source. The user must supply at least 22µF of bulk-
storage capacitance at the input terminals (+VIN, -VIN).
The capacitor should be rated for +100V and be able to
carry approximately 200mA of ripple current.
The flyback DC-DC converter achieves up to 81%
efficiency. The single-transistor topology and primary-side
regulation provide for a low-cost design by eliminating
the need for an optocoupler and shunt reference on the
secondary side. The EV kit provides cycle-by-cycle,
primary-side current-limit protection. Current-sense
resistor R5 senses the current through the transformer’s
(T1) primary winding, switching transistor (N1), and turns
off the transistor when the trip level of +1V is reached. The
surface-mount transformer provides galvanic isolation up
to +1500V for both outputs. The EV kit features PCB pads
for an RCD snubber network (R8, C10, D3) to minimize
leakage energy ringing and clamp the voltage at the drain
of MOSFET N1 during switching (with most MOSFETs this
snubber circuit can be eliminated).
Primary-side regulation through feedback resistors
R1 and R2, rectifier D6, and transformer T1 tertiary
631-435-1110
916-941-1117
805-446-4800
845-895-2055
310-322-3331
361-992-7900
864-963-6300
770-436-1300
800-344-2112
847-803-6100
402-563-6866
805-446-4800
Detailed Description of Hardware
Evaluates: MAX17500A
PHONE
OUT2
) provides up to 100mA. The circuit can be
OUT1
) provides up to 1.5A and the +15V
www.centralsemi.com
www.cooperet.com
www.diodes.com
www.fair-rite.com
www.irf.com
www.irctt.com
www.kemet.com
www.murata-northamerica.com
www.panasonic.com
www.component.tdk.com
www.vishay.com
www.diodes.com
Componets Suppliers
WEBSITE