MCP1630RD-LIC2 Microchip Technology, MCP1630RD-LIC2 Datasheet - Page 11

• Manufacturer Part Number: MCP1630RD-LIC2
• Description: BOARD DEMO FOR MCP1630 LI-ION
• Manufacturer: Microchip Technology

Specifications of MCP1630RD-LIC2

• Main Purpose: Power Management, Battery Charger
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP1630
• Primary Attributes: 3 Cells- NiMH / NiCd, 1.35A Out, 6V ~ 14 V Input
• Secondary Attributes: Preconditioning, Cell Temperature & Batt Pack Fault Monitoring
• Silicon Manufacturer: Microchip
• Silicon Core Number: MCP1630
• Features: Overvoltage/Overtemperature Protection, Over Current Protection In The Event Of A Shorted Battery
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

2.1
2.2
© 2005 Microchip Technology Inc.
INTRODUCTION
FEATURES
Chapter 2. Installation and Operation
The MCP1630 Li-Ion Multi-Bay Battery Charger demonstrates Microchip’s MCP1630
High-Speed PWM when used in a pseudo-smart battery charger application. The
MCP1630 is a High Speed, microcontroller adaptable, pulse width modulator. When
used in conjunction with a microcontroller, the MCP1630 will control the power system
duty cycle to provide output voltage or current regulation. The microcontroller
(PIC18F2410) can be used to regulate output voltage or current, switching frequency
and maximum duty cycle. The MCP1630 generates duty cycle while providing fast
overcurrent protection based off various external inputs. External signals include the
input oscillator, the reference voltage, the feedback voltage and the current sense. The
output signal is a square-wave pulse. The power train used for the MCP1630 is a
SEPIC.
The MCP1630 has the following features:
• Programmed Parameters – Modified in firmware
• Factory Settings:
• Overvoltage protection (battery removed)
• Overcharge protection to prevent damaging the battery
• Overcurrent protection in the event of a shorted battery
• Battery-reversal protection
• Input short circuit protection
• Overtemperature protection to prevent the battery from reaching too high a
• Fast charge termination in the event the battery temperature is to high
• Soft-start capability by holding the reference voltage low during power-up
• The MCP1630 terminates charge by detecting a predefined charge current
• The MCP1630 has the flexibility to optimize the charging algorithm for new battery
• Ability to adapt to environmental effects, such as ambient temperature
- Preconditioning charge current = 200 mA
- Preconditioning threshold = 2.8V
- Constant-current fast charge = 2A
- Constant-voltage charge = 4.2V
- Charge termination threshold = 100 mA
temperature during charge
threshold during constant-voltage charge, or a specified elapsed time
technology and add proprietary features by modifying the firmware contained in
the PIC18F2410. The factory-programmed source code is available
MCP1630 LI-ION MULTI-BAY BATTERY
CHARGER USER’S GUIDE
DS51515A-page 7