Texas Instruments Evaluation Module for UCC28250 Advanced PWM Controller with Pre-Bias Operation UCC28250EVM-501 UCC28250EVM-501 Hoja De Datos
Los códigos de productos
UCC28250EVM-501
User's Guide
SLUU429B – June 2010 – Revised December 2010
Half-Bridge DC-to-DC Converter With Primary-Side Control
1
Introduction
This EVM is to help evaluating UCC28250 PWM device with primary-side control in DC-to-DC symmetrical
half-bridge converter topology. The targeted application is telecom module design with nominal 48-V input.
UCC28250 is a PWM controller that can be used for primary-side control or secondary-side control. In this
EVM, the UCC28250 is placed at primary side to make primary-side control.
half-bridge converter topology. The targeted application is telecom module design with nominal 48-V input.
UCC28250 is a PWM controller that can be used for primary-side control or secondary-side control. In this
EVM, the UCC28250 is placed at primary side to make primary-side control.
2
Description
The EVM is a 75-W symmetrical half-bridge DC-to-DC converter that converts 36-V to 72-V DC to a
regulated output voltage 3.3 V and maximum 23-A load current.
regulated output voltage 3.3 V and maximum 23-A load current.
2.1
Typical Applications
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Telecom power supplies with primary-side control
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Server systems
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Datacom
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DSP’s, ASIC’s, and FPGA’s
2.2
Features
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Start up directly from telecom telecom input voltage 36-V to 72-V DC.
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Regulated output voltage 3.3 V with maximum 23-A load current.
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Telecom basic isolation from primary to secondary 1500 V.
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Output voltage regulation from no load to full load, and from low line to high line.
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Control driven synchronous rectifier.
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All surface mount components, double sided close to form factor of quarter brick.
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Voltage mode control.
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Remote Enable ON/OFF Function and manual switch.
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Non-latching input over voltage protection.
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Non-latching input under voltage protection.
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Hiccup over current protection.
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Test points to facilitate the devices evaluation.
2
Half-Bridge DC-to-DC Converter With Primary-Side Control
SLUU429B – June 2010 – Revised December 2010
© 2010, Texas Instruments Incorporated