MCP1631HV-500E/ST Microchip Technology, MCP1631HV-500E/ST Datasheet - Page 46

• Manufacturer Part Number: MCP1631HV-500E/ST
• Description: IC INTEGRATED PWM HS 20TSSOP
• Manufacturer: Microchip Technology

Specifications of MCP1631HV-500E/ST

• Package / Case: 20-TSSOP
• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 2MHz
• Duty Cycle: 10%
• Voltage - Supply: 3.5 V ~ 16 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 125°C
• Frequency-max: 2MHz
• Output Voltage: 3.3 V to 5 V
• Output Current: 250 mA
• Input Voltage: 3 V to 5.5 V
• Switching Frequency: 2 MHz
• Operating Temperature Range: - 40 C to + 125 C
• Mounting Style: SMD/SMT
• Frequency: 1MHz
• Digital Ic Case Style: TSSOP
• No. Of Pins: 20
• Peak Reflow Compatible (260 C): Yes
• Rohs Compliant: Yes
• Leaded Process Compatible: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP1631RD-DCPC1 - REF DES BATT CHARG OR LED DRIVERMCP1631RD-MCC2 - REFERENCE DESIGN MCP1631HV
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

MCP1631HV Multi-Chemistry Battery Charger Reference Design
DS51791A-page 42
C.6.2
1. In the mikroC
2. Double click on the
3. Scroll through the header file and locate “#define LION_SUPPORT”.
4. Scroll through the header file and locate “#define NIMH_SUPPORT”.
5. Scroll through the header file and locate “#define LED_DRIVER_SUPPORT”.
6. Scroll down to the “#IF (NIMH_SUPPORT == ENABLED) section of the header
7. Set the NIMH_NICD_CONDITION_CURRENT to 140 mAh. (0.2C Conditioning
8. Set the NIMH_NICD_CONDITION_VOLTAGE to 900 mV. (Transition point from
9. Set the NIMH_NICD_CHARGE_CURRENT to 700 mAh. (1.0C Constant Current
10. Set the NIMH_NICD_CHARGE_TERMINATION_CURRENT to 84 mAh. (0.07C
11. Set the DVDT_MV_PER_CELL to 6.0. (Termination Voltage change per cell per
12. Set the NIMH_NICD_CHARGE_DTDT_60SEC_THRESHOLD to 0.3. (Termina-
13. Set the NIMH_NICD_CHARGE_OVTEMP_SETPOINT to
14. Save the file (File | Save).
15. Compile (Project | Build).
16. Open MPLAB and load the workspace if it is not already loaded. (File | Open
17. Import the new “MCP1631HVBuckBoostBatteryChargerReferenceDesign.hex”
18. Download the file (Debugger | Program) and reset the processor (Debugger |
19. Run the new program (Debugger | Run).
20. Turn on the power supply and set the output voltage to 8V. Turn off the power
21. Connect the variable 8V supply (+) lead to the input connector (+) pin J1-1.
22. Connect the variable 8V supply (-) lead to the input connector (-) pin J1-2.
23. Connect the NiMH battery pack to the charger board J2 connector.
24. Turn on the variable 8V supply.
25. Press and hold the “ON/OFF” button on the charger board until the LED’s flash
26. Press and release the “CHEM” button until the “NiMH” LED is on.
the ‘.H’ file list.
“MULTICHEMISTRY_REF_DESIGN_BOARD_102_00232.H” file to open it.
Set it to “DISABLED”.
Set it to “ENABLED”.
Set it to “DISABLED”.
file. The section contains Nickel Metal Hydride and NiCd specific parameters.
mode current)
Conditioning to CC mode)
Charge)
– Termination Current for CV mode)
minute in millivolts)
tion Temperature change per minute in degrees Celsius)
THERMISTOR_OHMS_45C. (Termination temperature for safety)
Workspace) MCP1631HVBuckBoostBatteryChargerReferenceDesign.mcw
file. (File | Import)
Reset | Processor Reset).
supply.
(about 5 seconds). The board is now in Configuration Mode.
NiMH Lab Exercise (3 Cell, 700 mAh pack, with thermistor)
™
“Project Summary” frame, click on the “H files” branch to expand
© 2009 Microchip Technology Inc.