IC manufacturers Microchip

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Microchip MCP1632 | Demoboard DS50002321A

Single-Cell Li-Ion Battery Charger Demo Board User’s Guide

Overview

TopologyBuck-Boost Converter
Input voltage5 V
IC revisionA

Description

The MCP1632 Single-Cell Li-Ion Battery Charger Demo Board is a step-up/step-down, switch-mode, DC/DC converter used for battery charging applications. The demo board provides a 4.2V constant voltage source. Other output voltages can be obtained with minor modifications to the board’s Bill of Materials (BOM).The MCP1632 Single-Cell Li-Ion Battery Charger Demo Board is an intelligent battery charging system for a single-cell Lithium-Ion battery. MCP1632 Single-Cell Li-Ion Battery Charger Demo Board utilizes Microchip's MCP1632 high-speed Pulse-Width Modulator (PWM). The 8-pin MCP1632 device contains all the analog components necessary for a peak current mode control loop including an error amplifier, PWM comparator and a high-current driver output pin.An 8-pin PIC12F1822 microcontroller is used to implement the charging algorithm. In addition, the PIC12F1822 firmware supervises the battery voltage and current.

Features

  • Compact size, highly efficient battery charger
  • Can operate in Buck (step-down) or Boost (step-up) mode
  • Maximum output current: 1500 mA; can be adjusted via firmware
  • Chemistry-optimized charging algorithm
  • Maximum output power: 7W
  • Factory-programmed source code provided
  • Additional application functions can be implemented in the firmware

Products

Order Code Data­sheet Simu­lation Downloads Product seriesL1
(µH)
L2
(µH)
IR
(A)
IR 2
(A)
ISAT
(A)
RDC1 typ
(Ω)
RDC2 typ
(Ω)
RDC1 max
(Ω)
RDC2 max
(Ω)
fres
(MHz)
Type Samples
744878004SPEC
8 files WE-DD SMT Shielded Coupled Inductor 4.7 4.7 1.3 1.3 3 0.065 0.065 0.075 0.075 46 Straight
Order Code Data­sheet Simu­lation
744878004SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesL1
(µH)
L2
(µH)
IR
(A)
IR 2
(A)
ISAT
(A)
RDC1 typ
(Ω)
RDC2 typ
(Ω)
RDC1 max
(Ω)
RDC2 max
(Ω)
fres
(MHz)
Type Samples