MCP1631RD-DCPC1 MCP1631HV Digitally Controlled Programmable Current Source Reference Design

The MCP1631HV Digitally Controlled Programmable Current Source Reference Design is used to drive and dim one or more power LEDs in a series or parallel topology (depending on the LED’s capability). The reference design may also be used to charge one to four cell NiMH/NiCd or one to two cell Li-Ion battery packs. The board uses the MCP1631HV high-speed analog PWM controller and PIC16F616 microcontroller to generate the proper dimming ratio for LEDs or charge algorithm for NiMH, NiCd and Li-Ion batteries. The boards is used to evaluate Microchip’s MCP1631HV in a SEPIC power converter application.

Input Operating Voltage Range: +3.5V to +16V
Firmware default output current of 700 mA with dimming ratio 10:1 (70 mA/step)
Maximum output current of 1000 mA
Maximum output power of 8.5W
Drive one or more LEDs
Firmware for charging Li-Ion, NiMH, and NiCd batteries
Single ON/OFF/Dimming switch
Status and fault indication
Hardware and software overvoltage protection (OVP) set to 9.0V. The software value can be modified in the source code to be less than 9.0V

Documentation & Software

AppNotes	Last Updated	Size
AN960 - New Components and Design Methods Bring Intelligence to Battery Charger Applications	11/19/2004 3:24:56 PM	293KB
PIC16F610/16HV610/PIC16F616/16HV616 14-Pin Flash-Based, 8-Bit CMOS MCU	11/11/2009 8:23:21 AM	3MB
MCP1631RD-DCPC1 Firmware	7/22/2009 8:48:04 AM	70KB
MCP1631HV Digitally Controlled Programmable Current Source Reference Design	7/21/2009 1:55:09 PM	367KB
MCP1631RD-DCPC1 Gerbers	7/21/2009 1:45:33 PM	561KB
MCP1631/HV/MCP1631V/VHV High-Speed, Pulse Width Modulator	12/2/2008 3:16:56 PM	565KB