7 A 2:1 Switched Capacitor Charger for Single Cell Battery
Design Files
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13 A 4:1 Switched Capacitor Charger for Single Cell Battery
The PCA9485UK is a highly-integrated switched-capacitor converter with an embedded OVPFET and dual external FET controls, targeted to provide the quadruple output current for the fast-charging applications with a 1-cell battery. The device works in 4:1 switching operation with a very high efficiency (around 96.8%, at VOUT=4.5 V, IVOUT=8 A) in 2:1 and 1:2 switching operation or in 1:1 mode with forward and reverse direction.
Product Details
Features
Key Features
- Dual phase switched capacitor to optimize efficiency
- Integrated 4:1, 2:1 switched capacitor charger for single cell battery including 1:1 bypass
- Reverse operation mode, such as 1:4, 1:2 and reverse bypass from VOUT to VIN
- An OVPFET with IVIN and VBAT regulation loop
- External FEET gate control for GaN and CMOS to support dual input via USB and Wireless Power
- 12 V to 21 V input voltage in 4:1 switching operation
- 6 V to 10.5 V input voltage in 2:1 switching operation
- 1.2 V/1.8 V IO voltage support
Performance
- > 96.8% efficiency at VOUT=4.5 V and IOUT=8 A
Protection
- Over/Under-voltage protection
- Over-current protection (OCP)
- Fast OCP for short protection during operation
- Over-temperature protection (OTP)
- Input/output and flying capacitor short protection in startup
- Reverse-current protections (RCP)
- Watchdog timers
Others
- Leader and follower for parallel charging
- 10 channels 12-bits ADC
- 1 Mbit/s I²C-bus target interface
Related products
10 A 2:1 Switched Capacitor Charger for Single Cell Battery
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Documentation
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