7 A 2:1 Switched Capacitor Charger for Single Cell Battery
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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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Part | Order | CAD Model | Status | Device Function | Budgetary Price excluding tax | Output Voltage (V) | Output Current (A) | Battery Charger | Number of Battery Cells | Charge Termination Method | Charge Current Type | Supply Voltage [min] (V) | Supply Voltage [max] (V) | Ambient Operating Temperature (Min to Max) (℃) | Input Voltage (Max) (V) | Additional Features - Analog |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Active | 4:1 Switched capacitor charger for a 1-cell battery | 1K @ US$2.62 | 2.7, 4.7 | 5, 10, 13 | Switched capacitor charger up to 13A | 1 | Top off current with separate charging algorithm in MCU | CC/CV mode with separate charging algorithm in MCU | 12 | 21.2 | -40 to 85 | 27 | 1 Mbit/s I2C-bus target interface, External FET gate control for GaN and CMOS, OCP, OTP, OVP, Parallel charging, RCP, Short Detection, UVP, Watchdog |
Documentation
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2 documents
Application Note (1)
Data Sheet (1)
2 documents
Compact List
Application Note (1)
Data Sheet (1)
Design Resources
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