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Reference Designs

1-s to 6-s: up to 1.5-A li-ion battery charger reference design with switching CC source

Texas Instruments

This reference design demonstrates a cost-optimized onboard battery-charger solution for mid- or low-end vacuum robots: which has up to 1.5-A charging-current capability with a small layout area: providing ±3% charging-voltage accuracy and ±3% charging-current accuracy.The design enables a stable and smooth precharging to constant-current (CC) and constant-voltage (CV) charging profile and has been evaluated with a 4S2P li-ion battery pack.

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Features

Wide input voltage range support: 4 V to 30 V (1-s to 6-s li-ion battery-charger solution)Up to 1.5-A maximum charging currentPure hardware-configurable 3-stage charging with external circuitsPrecharging: constant current (CC): and constant voltage (CV)CC and CVImplement precharge stage with simple analog circuitAchieve smooth and stable CC-to-CV transition with internal compensation and simple control logic