参数资料
型号: MCP1631RD-MCC1
厂商: Microchip Technology
文件页数: 14/54页
文件大小: 0K
描述: REFERENCE DESIGN FOR MCP1631HV
标准包装: 1
主要目的: 电源管理,电池充电器
嵌入式: 是,MCU,8 位
已用 IC / 零件: MCP1631HV,PIC16F883
主要属性: 1 ~ 2 芯锂离子电池,1 ~ 4 芯镍镉/镍氢电池
次要属性: 状态 LED
已供物品: 板,CD
MCP1631HV Multi-Chemistry Battery Charger Reference Design
V BAT+
Variable
+
-
1,000 μF
10V Al
2 ?
10W
+
Power Supply
- 0V - 6V
V BAT–
FIGURE 2-4:
Simulated Battery Load.
2.3.1.3
SELECTING BATTERY CHEMISTRY AND NUMBER OF CELLS
? Three push buttons are used to start a charge cycle, select chemistry and select
number of series cells. There are two LEDs, (red - NiMH, green - Li-Ion, red +
green - LED Driver) used to indicate chemistry type and four yellow LEDs to
indicate the number of series cells selected (D6, D7, D8, D9).
? S1 (ON/OFF) is used to start and stop the charge cycle or to enter the program-
ming mode. When the input voltage is within the specified operating range (+5.3V
to +16V), press and hold the ON/OFF button for 5 seconds, all LEDs with the
exception of D3 should be illuminated. Release S1 and STATUS LED (D3) will be
flashing, indicating that the board is in programming mode.
? Press S2 (CHEM) to select the desired chemistry, indication is provided by red
LED D4 (Li-Ion) or green LED D5 (NiMH/NiCd) or both (LED Driver).
? Press S3 (CELLS) to select the number of series cells, indication is provided by
yellow LEDs D6 thru D9 where D6 = bit 0 and D9 = bit 3 of a 4-bit hexadecimal
value.
? Once the desired chemistry and number of cells is selected, press S1 (ON/OFF)
to store the settings. The selected chemistry LED and number of series cells LED
both should be illuminated.
? To start a charge cycle press and release S1. D3 (green) will be illuminated
indicating a charge cycle has begun, the selected chemistry LED should flash
slowly indicating normal charge cycle conditions.
? If the chemistry LED is not flashing and the Status LED is flashing, a fault
condition has persisted for 5 attempts indicating that the charge cycle has
terminated.
? Remove input voltage and check connections and verify the proper battery pack
chemistry and number of series cells.
? Once the problem is corrected, apply the input voltage, verify chemistry and # of
cells LEDs and press S1 to start a charge cycle.
DS51791A-page 10
Note:
For single cell Li-Ion, a 3600 mA-Hr battery with internal protection circuitry
is recommended for evaluation. For NiMH charge cycle, Panasonic
HHR-210AA/B2B were used to develop the -dV/dt and +dT/dt termination
methods.
? 2009 Microchip Technology Inc.
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