Microchip Technology MCP1630RD-DDBK3 Manual Do Utilizador

DS51641A-page 8

© 2006 Microchip Technology Inc.

The MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design is fully 
assembled and tested for charging a four series cell Li-Ion battery pack (Battery Pack 
should have internal overvoltage, overcurrent and overtemperature protection). The 
board requires the use of an external input voltage source (+7.0V) for charging.

1. Connect the positive side of the +6.5V to +7.0V input to J2 Pin 2, connect the 

negative side (or ground) to Pin 1 of J2. This source voltage should not exceed 
7.0 and be rated for 8A minimum supply current.

2. Connect the positive side of the Four cell Li-Ion battery pack voltage to J1 Pin 1, 

connect the battery pack return to the negative side of J1 Pin 2. 

3. Once the SW1 push button is pressed, the MCP1630V Bidirectional 4 Cell Li-Ion 

Charger Reference Design is powered. When powered, a charge cycle will start 
automatically if the 7.0V is connected and all preconditions are meet, (see 
Appendix C. “Firmware”).

4. LED D3 will be illuminated when the board is running, (charging or bucking).
5. LED D5 will flash only when a charge cycle is in progress.
6. Again, a subsequent pressing of the SW1 push button during normal operation 

of the MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design will 
power-off the converter.

Note: Both supplies should have a separate isolated return (ground), there is a 

current sense resistor between the +7.0V (V

BULK

) and +14V(V

BATT

) supply 

returns. If the returns are connected, the charge current can not be 
controlled.

LOCATIONS

FOR

D3

D5

CONN
ICD 2

SW1

SWITCH

+14 V

BAT

+7V

I