Datasheet

MCP1630 LOW-COST NIMH BATTERY

CHARGER REFERENCE DESIGN

Chapter 1. Product Overview

1.1 INTRODUCTION

The MCP1630 Low-Cost NiMH Battery Charger Reference Design is used to charge

three series cell NiMH or NiCd batteries. The board uses the MCP1630 high-speed

analog PWM and PIC12F683 to generate the charge algorithm for NiMH or NiCd

batteries.

The MCP1630 Low-Cost NiMH Battery Charger Reference Design is used to evaluate

Microchip’s MCP1630 in a SEPIC power converter application. As provided, the

MCP1630 Low-Cost NiMH Battery Charger Reference Design is capable of charging a

three series cell NiMH battery pack from an input voltage of 6V to 14V. The MCP1630

Low-Cost NiMH Battery Charger Reference Design provides a constant current charge

with preconditioning, cell temperature monitoring and battery pack fault monitoring.

Also, the charger provides a status or fault indication. The MCP1630 Low-Cost NiMH

Battery Charger Reference Design automatically detects the insertion or removal of a

battery pack.

This chapter covers the following topics.

• What is the MCP1630 Low Cost NiMH Battery Charger Reference Design?

• What the MCP1630 Low Cost NiMH Battery Charger Reference Design Kit

includes.

FIGURE 1-1: MCP1630 Low Cost NiMH Battery Charger Reference Design

Block Diagram.

6V to 14V

Power Supply

MCP1630 SEPIC

Battery Charger

B+

B-

THERM

3 Cell NiMH

VOLTAGE

REGULATED

WALL CUBE