Microchip Technology MCP1631 Evaluation Board MCP1631RD-DCPC1 MCP1631RD-DCPC1 Data Sheet
Product codes
MCP1631RD-DCPC1
MCP1631HV DIGITALLY CONTROLLED
PROGRAMMABLE CURRENT SOURCE
REFERENCE DESIGN
© 2009 Microchip Technology Inc.
DS51798A-page 5
Chapter 1. Product Overview
1.1
INTRODUCTION
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.
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 MCP1631HV Digitally Controlled Programmable Current Source Reference
Design is used to evaluate Microchip’s MCP1631HV in a SEPIC power converter
application. The MCP1631HV Digitally Controlled Programmable Current Source
Reference Design is user programmable. Multiple user functions may be selected by
re-compiling the source code. The board can drive LEDs or charge NiMH, NiCd or
Li-Ion batteries with a maximum current of 1A. In Charger Mode, the MCP1631HV
Digitally Controlled Programmable Current Source Reference Design provides a
constant current charge (Ni-based chemistry) and constant current/constant voltage
(Li-Ion based chemistry) with preconditioning, cell temperature monitoring (for
Ni-based) and battery pack fault monitoring. In LED Driver mode, the MCP1631HV
Digitally Controlled Programmable Current Source Reference Design provides a
constant user defined current and a 10:1 dimming ratio. The dimming ratio and
maximum current can be selected before compiling the source code. The board has
LED indicators to provide multiple fault indication.
Design is used to evaluate Microchip’s MCP1631HV in a SEPIC power converter
application. The MCP1631HV Digitally Controlled Programmable Current Source
Reference Design is user programmable. Multiple user functions may be selected by
re-compiling the source code. The board can drive LEDs or charge NiMH, NiCd or
Li-Ion batteries with a maximum current of 1A. In Charger Mode, the MCP1631HV
Digitally Controlled Programmable Current Source Reference Design provides a
constant current charge (Ni-based chemistry) and constant current/constant voltage
(Li-Ion based chemistry) with preconditioning, cell temperature monitoring (for
Ni-based) and battery pack fault monitoring. In LED Driver mode, the MCP1631HV
Digitally Controlled Programmable Current Source Reference Design provides a
constant user defined current and a 10:1 dimming ratio. The dimming ratio and
maximum current can be selected before compiling the source code. The board has
LED indicators to provide multiple fault indication.
This chapter covers the following topics:
• What is the MCP1631HV Digitally Controlled Programmable Current Source
Reference Design Reference Design?
• What the MCP1631HV Digitally Controlled Programmable Current Source
Reference Design Reference Design Kit includes.
FIGURE 1-1:
Block Diagram.
3.5V to 16V
Power Supply
MCP1631HV SEPIC
Programmable
+
-
+
-
THERMISTOR
LED
Current Source
or battery
pack