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2 LMR38020-Q1 Evaluation Module
The LMR38020QEVM is configured to deliver 5 V and 2 A at a switching frequency of 400 kHz.
• Tightly regulated output voltage of 5 V with 1.5% setpoint accuracy
• Wide input voltage operating range of 4.2 V to 80 V
• 98% maximum duty cycle
• PFM operation to improve efficiency at light load
• Spread spectrum option for reduced EMI
• PWRGD signal indicates output regulation
• Supports start-up with pre-biased output
• Programmable system UVLO through precision enable
• Fully assembled, tested, and proven PCB layout
2.1 Quick Start Procedure
1. Connect the voltage supply between VIN and GND connectors using short wires.
2. Connect the load of the converter between VOUT and GND connectors using short wires.
3. Set the supply voltage (V
IN
) at an appropriate level between 6 V to 80 V. Set the current limit of the supply to
an appropriate level as well.
4. Turn on the power supply. The EVM powers up and provides V
OUT
= 5 V.
5. Monitor the output voltage while increasing the load current to 2-A maximum.
See
for the location of the connectors.
Figure 2-1. LMR38020QEVM Top View
WARNING
Hot surface! Contact may cause burns. Do not touch!
LMR38020-Q1 Evaluation Module
4
LMR38020QEVM User Guide
Copyright © 2021 Texas Instruments Incorporated
