The MCP1630 High Speed PWM is interfaced to the PIC16LF818 to develop a complete NiMH battery charger with fuel gauge capability. The MCP1630 is used to regulate the battery charge current and protect the SEPIC power train against an open circuit (removed battery) or a shorted battery.
The high speed (12 ns current sense to output) capability of the MCP1630 is used to switch the SEPIC converter at 1 MHz, minimizing external inductor and capacitor cost, while the PIC16LF818 performs the complex NiMH battery charger timing functions.
Both the MCP1630 and PICLF818 protect the battery and circuit in the event of a fault.
| Manufacturer | Microchip Technology |
|---|---|
| Category | Power Management |
| Sub-Category | Battery Chargers |
| Eval Board Part Number | MCP1630DM-NMC1-ND |
| Eval Board Supplier | Microchip Technology |
| Eval Board |
Board not Stocked
|
| Cell Type |
Nickel Metal Hydride, NiMH
|
| Configuration |
4 in Series
|
| Voltage In |
8 ~ 15 V
|
| Voltage Out |
6.4 V
|
| Current Out |
500 mA
|
| Features |
Fault Indication
MCU Controlled Short Circuit Protection Status Indication |
| Quiescent Current [Typical] | |
| Sleep Mode Current [Typical] | |
| Component Count + Extras |
68 + 8
|
| Application / Target Market |
Battery Chargers
Portable Devices |
| Design Author |
Microchip Technology
|
| Main I.C. Base Part |
MCP1630
|
| Quiescent Current [Maximum] | |
| Sleep Mode Current [Maximum] |
29 µA
|
| Date Created By Author | |
| Date Added To Library | 2011-03 |
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