BQ25504 초저전력 부스트 컨버터 -배터리 관리, MPPT
(BQ25504 Ultra Low-Power Boost Converter With Battery Management)
개요
- 본 제품은 BQ25504 초저전력 부스트 컨버터 -배터리 관리입니다.
- DC-DC 스텝업 컨버터/충전 모듈입니다.
- TEG나 태양광 패널과 같은 낮은 전압 입력 공급으로부터 계속적으로 에너지 수확이 가능하며, 이를 이용하여 배터리 충전이 가능합니다.
특징
- Ultra Low Power, High Efficiency DC-DC Boost Converter/Charger
- Continuous energy harvesting from low voltage input supply: VIN ≥ 80mV (typical)
- Ultra-low quiescent current: IQ < 330nA (typical)
- Cold start voltage: VIN ≥ 330mV (typical)
- Programmable Dynamic Maximum Power Point Tracking (MPPT)
- Energy source input voltage VIN(DC): 0.13V-3V
- Energy storage component BAT voltage: 2.5V-5.25V
- Working environment temperature: -40~85 degree
- Boost mode switching frequency: up to 1MHZ
- Working mode: cold start mode, boost mode, thermal protection cut-off mode
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R-DIV: chip VRDIV pin, voltage output after dividing VIN;BAT-OK: chip VBAT. OK, digital output, battery normal flag;BAT: chip VBAT pin, connected to a rechargeable energy storage component such as rechargeable battery;STOR: chip VSTOR pin, chip boost function output pin, connected to a load;VIN: chip VIN DC pin, voltage input, connected to the collected energy source;OCS: chip VOC SAMPL pin, chip internal maximum power tracking point (MPPT) circuit sampling voltage input pin, sampling maximum power tracking point threshold voltage is obtained by external resistor to VIN_DC voltage division; when not using maximum power tracking point circuit When the OCS pin is connected to the STOR pin;REFS: Chip VREF SAMPL pin, the reference voltage of the maximum power tracking point (MPPT) circuit; when the maximum power tracking point circuit is not used, the REFS pin is externally connected to a voltage or GND.