Texas Instruments UCC28750EVM-071 User Manual

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EVM User's Guide: UCC28750EVM-071 UCC287502
Using the UCC28750EVM-071 60-W AC to DC Converter
Description
The UCC28750EVM-071 is a 60-W evaluation module
(EVM) for evaluating an off-line power AC to
DC flyback converter. The UCC28750EVM-071 is
intended for evaluation purposes and is not intended
to be an end product. The UCC28750EVM-071
converters 85-V to 265-V
RMS
to 24-V , capable of delivering 60 W of output
DC
power. This evaluation module uses the UCC287502
Constant-Voltage Flyback Controller Using Opto-
Coupled Feed-Back in a 60 W converter to provide
2.5 A of constant charge current. The input accepts
a voltge range of 85 VAC to 265 VAC. Depending
upon the operating conditions, the control law
algorithm modulates the switching frequency or the
peak primary current to satisfy the power transfer
requirements. The programmable slope compensation
enables both CCM and DCM operation. Power-boost
mode provides additional power for momentary peak
demand.
SLUUCW5 – NOVEMBER 2023
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input voltage down
RMS
UCC28750EVM-071
Copyright © 2023 Texas Instruments Incorporated
Get Started
1. Read and study this user's guide completely
before evaluating
2. Order the UCC28750EVM-071
step 1 and 2 is met
3. Setup and test the UCC28750EVM-071 per user's
guide instructions
Features
• Regulated 24 V ,+/-5%, 60 W Ouput
• Wide Input Range 85 to 265-V RMS
• Max Load Efficency > 90%
Applications
• Isolated offline AC/DC power supply
• Industrial AC/DC for grid infrastructure, appliances
• Audio, printer, TV, set-top box offline AC/DC
• Battery charger
• Merchant DIN rail power
• Electricity meter
• String inverter, Micro inverter
• Small home appliances,
indoor/outdoor unit
Using the UCC28750EVM-071 60-W AC to DC Converter
Description
for evaluation if
supply, Server PSU
Major appliances, AC
1