Texas Instruments LM25088 User Manual

1 Introduction
The LM25088 evaluation board is designed to provide the design engineer with a fully functional power
converter based on emulated current mode control to evaluate the LM25088 controller IC. The LM25088
evaluation board is available in two versions (like the LM25088 controller): the LM25088-1 evaluation
board provides ±5% oscillator frequency dithering to reduce EMI and the LM25088-2 evaluation board
provides hiccup mode restart to reduce over load stress. Both the evaluation boards share the same
layout except for silkscreen. The printed circuit board consists of two layers, 2 ounce of copper top and
bottom and the board size is 2.55x1.5x0.5 inches.
Specification
Input Voltage Range
Output Voltage
Max. Average Load Current
Load Regulation
Current Limit Type
Frequency
Figure 1. Typical Efficiency Curves of LM25088-1 and LM25088-2 Evaluation Boards
2 Powering and Loading Considerations
Read this entire page prior to attempting to power the evaluation board.
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SNVA383D – November 2008 – Revised April 2013
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AN-1931 LM25088 Evaluation Board
LM25088-1
5.5V to 36V
5.0V
7A
2%
Cycle-by-cycle current limit
250 kHz (±5% Oscillator Dithering)
Copyright © 2008–2013, Texas Instruments Incorporated
SNVA383D – November 2008 – Revised April 2013
LM25088-2
5.5V to 36V
Hiccup Mode Restart
250 kHz
AN-1931 LM25088 Evaluation Board
User's Guide
5.0V
7A
2%
1