FUSE选择教程

input_fuse_selectionInput Fuse Selection

Input Fuse Selection
Application Note Table of Contents
INTRODUCTION ..........................................1 1. FUSE SELECTION CHECKLIST ...........1 2. CURRENT RATING.................................1 3. VOLTAGE RATING.................................2 4. TEMPERATURE DERATING.................2 5. MELTING INTEGRAL ............................2 6. AGENCY APPROVALS ...........................4 7. DESIGN EXAMPLE .................................4

calculations needs to be performed to determine items 1, 3, 4, and 5.

2. Current Rating
The minimum current rating of a fuse is determined by the maximum input current of a DC/DC converter. Typically, the maximum current consumption occurs at the maximum output load and the minimum input voltage. The magnitude of the input