MCP1631RD-MCC2 Microchip Technology, MCP1631RD-MCC2 Datasheet - Page 18

• Manufacturer Part Number: MCP1631RD-MCC2
• Description: REFERENCE DESIGN MCP1631HV
• Manufacturer: Microchip Technology

Specifications of MCP1631RD-MCC2

• Main Purpose: Power Management, Battery Charger
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP1631HV, PIC16F883
• Primary Attributes: 1 ~ 2 Cell- Li-Ion, 1 ~ 5 Cell- NiCd/NiMH, 1 ~ 2 1W LEDs
• Secondary Attributes: Status LEDs
• Silicon Manufacturer: Microchip
• Application Sub Type: Battery Charger
• Kit Application Type: Power Management - Battery
• Silicon Core Number: MCP1631HV, PIC16F883
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AN1137
As an approximation, the RMS current in C
For worst-case situations, the RMS current in the C
coupling capacitor is equal to 2A x (4.2V / 12V)
1.18A. The current rating for small multi-layer ceramic
capacitors is typically much higher than 1.18A. For
higher power applications, it may be necessary to use
multiple capacitors in parallel to keep the RMS current
within ratings.
DS01137A-page 18
I
C1 RMS
(
)
=
I
OUT
×
V
OUT
⁄
V
IN
1
:
1/2
or
1
CONCLUSION
For applications that require intelligent power manage-
ment solutions like battery chargers, the combination of
a microcontroller and MCP1631 high-speed PWM is
very powerful. It brings the programmability benefits of
the microcontroller and adds the performance of a
high-speed analog PWM. The analog PWM will
respond to changes in input voltage and output current
very quickly. No code or execution time is necessary to
regulate or protect the circuit. The microcontroller is
used for programmability, establishing charge profile
conditions and monitoring the circuit for fault conditions
and taking the appropriate action, in the event of a
specific fault.
© 2007 Microchip Technology Inc.