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User's Guide
SNVA383D–November 2008–Revised April 2013
AN-1931 LM25088 Evaluation Board
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 LM25088-1 LM25088-2
Input Voltage Range 5.5V to 36V 5.5V to 36V
Output Voltage 5.0V 5.0V
Max. Average Load Current 7A 7A
Load Regulation 2% 2%
Current Limit Type Cycle-by-cycle current limit Hiccup Mode Restart
Frequency 250 kHz (±5% Oscillator Dithering) 250 kHz
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 AN-1931 LM25088 Evaluation Board
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Verzeichnis
- ・ Blockdiagramm on Seite 5
- ・ Anwendungsbereich on Seite 9
