Texas Instruments Evaluation Board for the LM5015 LM5015ISOEVAL/NOPB LM5015ISOEVAL/NOPB Datenbogen
Produktcode
LM5015ISOEVAL/NOPB
User's Guide
SNVA291A – October 2007 – Revised April 2013
AN-1724 LM5015 Isolated Two-Switch DC-DC Regulator
Evaluation Board
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Introduction
The LM5015 Isolated DC-DC regulator evaluation board provides a low cost and fully functional DC-DC
regulator without employing any discrete power MOSFET. The evaluation board can be configured as
either an Isolated Two-Switch Forward DC-DC Regulator, or an Isolated Two-Switch Flyback DC-DC
Regulator. The factory default configuration of the evaluation board is forward topology. The forward
converter configuration will produce about 2% higher efficiency and lower output ripple voltage than the
flyback. Whereas, the Flyback configuration costs slightly less. Suggestion to reconfigure the evaluation
board as an Isolated Two-Switch Flyback DC-DC Regulator is provided at the end of this document.
regulator without employing any discrete power MOSFET. The evaluation board can be configured as
either an Isolated Two-Switch Forward DC-DC Regulator, or an Isolated Two-Switch Flyback DC-DC
Regulator. The factory default configuration of the evaluation board is forward topology. The forward
converter configuration will produce about 2% higher efficiency and lower output ripple voltage than the
flyback. Whereas, the Flyback configuration costs slightly less. Suggestion to reconfigure the evaluation
board as an Isolated Two-Switch Flyback DC-DC Regulator is provided at the end of this document.
For detailed features and technical information of the LM5015 device, see the LM5015 High Voltage
Monolithic Two-Switch Forward DC-DC Regulator Data Sheet (
Monolithic Two-Switch Forward DC-DC Regulator Data Sheet (
). For non-isolated applications,
see the AN-1725 LM5015 Non-Isolated Two-Switch DCDC Regulator Evaluation Board User's Guide
(
(
).
The evaluation board features:
•
Input Voltage: 36V to 72V
•
Isolated Output Voltage: 5V
•
Output Current: 0A minimum, 2.5A nominal, and 3A maximum
•
Input UVLO Threshold: 34V nominal
•
Measured Efficiency: 86% (V
IN
= 48V, I
OUT
= 2.5A)
•
Switching Frequency: 300 kHz
•
Ability to Synchronize to External Clock
•
Ability to Be Remote Controlled (Enable/Disable)
•
Two Layer PC Board and Top Side Component Placement
•
Configurable as Either a Forward (Factory Default) or a Flyback Regulator
•
Board Size (WxLxH): 2.5 in. x 3.5 in. x 0.63 in
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SNVA291A – October 2007 – Revised April 2013
AN-1724 LM5015 Isolated Two-Switch DC-DC Regulator Evaluation Board
Copyright © 2007–2013, Texas Instruments Incorporated