MCP1631HV Programmable Current Source Reference DesignThe 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 LEDs 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 analogue PWM controller and a PIC16F616 microcontroller to generate the proper dimming ratio for LEDs or charge algorithm for NiMH, NiCd and Li-Ion batteries. The board is used to evaluate the MCP1631HV in a SEPIC power converter application.Input voltage range: +3.5 to +16V Firmware default output current of 70mA with dimming ratio 10:1 70mA/step Maximum output current of 1000mA Maximum output power of 8.5W Drives one or more LEDs Firmware included 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 ### PWM（脉冲频率调制）控制器，Microchip
MCP1631HV 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 LEDs 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 analogue PWM controller and a PIC16F616 microcontroller to generate the proper dimming ratio for LEDs or charge algorithm for NiMH, NiCd and Li-Ion batteries. The board is used to evaluate the MCP1631HV in a SEPIC power converter application.
Input voltage range: +3.5 to +16V
Firmware default output current of 70mA with dimming ratio 10:1 70mA/step
Maximum output current of 1000mA
Maximum output power of 8.5W
Drives one or more LEDs
Firmware included 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
### PWM（脉冲频率调制）控制器，