Evaluates: MAX17572 in 3.3V
Output-Voltage Application
MAX17572 3.3V Output
Evaluation Kit
General Description
The MAX17572 3.3V output evaluation kit (EV kit)
provides a proven design to evaluate the MAX17572
high-voltage, high-efficiency, synchronous step-down
DC-DC converter. The EV kit is preset for 3.3V output at
load currents up to 1A and features a 500kHz switching
frequency for optimum efficiency and component size.
The EV kit features adjustable input undervoltage lockout,
adjustable soft-start, open-drain active-low RESET signal,
and external frequency synchronization.
Features
● Operates from a 4.5V to 60V Input Supply
●
3.3V Output Voltage
●
Up to 1A Output Current
● 500kHz Switching Frequency
● Enable/UVLO Input, Resistor-Programmable UVLO
Threshold
● Adjustable Soft-Start Time
●
Open-Drain
RESET
Output
● External Frequency Synchronization
● Overcurrent and Overtemperature Protection
● Proven PCB Layout
● Fully Assembled and Tested
19-8651; Rev 1; 6/17
Quick Start
Recommended Equipment
●
MAX17572 3.3V output EV kit
● 4.5V to 60V, 2A DC input power supply
● Load capable of sinking 1A
● Digital voltmeter (DVM)
Procedure
The EV kit is fully assembled and tested. Follow the steps
below to verify the board operation.
Caution: Do not turn
on power supply until all connections are completed.
1)
Set the power supply at a voltage between 4.5V and
60V. Disable the power supply.
2)
Connect the positive terminal of the power supply
to the V
IN
PCB pad and the negative terminal to
the nearest PGND PCB pad. Connect the positive
terminal of the 1A load to the V
OUT
PCB pad and the
negative terminal to the nearest PGND PCB pad.
3)
Connect the DVM across the V
OUT
PCB pad and
the nearest PGND PCB pad.
4) Verify that shunts are installed across pins 1-2 on
for details).
5)
Turn on the DC power supply.
6)
Enable the load.
7)
Verify that the DVM displays 3.3V
