Overview
Description
The ISL9520EVAL1Z evaluation board is used to evaluate the ISL9520 highly integrated narrow VDC regulator/battery charger controller for Li-ion/Li-ion polymer batteries. It has an SMBus interface and provides gate drive to external switching N-channel FETs that control system voltage, charge current limit and input current limit. The ISL9520EVAL1Z evaluation board includes a USB to SMBus interface to allow users to control the ISL9520 from a personal computer.
Features
- ±0.5% system voltage accuracy (-10 °C to +100 °C)
- ±3% accurate input current limit (-10 °C to +100 °C)
- ±3% accurate battery charge current limit
- Variable switching frequency at light load conditions for higher efficiency
- Fixed frequency operation at higher loads; fixed frequency mode can be forced by an external pin
- Trickle charge system for deeply discharged batteries
- SMBus 2-wire serial interface
- Default system voltage values for 2-cell, 3-cell or 4-cell operation selected by an external pin
- Adapter in-rush FET control
- Adapter isolation FET control
- Battery short circuit protection
- Fast system-load transient response
- Monitor outputs
- 11-bit max system voltage setting
- 7-bit min system voltage setting
- 6-bit charge current setting: Over 8A battery charger current
- 6-bit adapter current setting: Over 8A adapter current
- +9V to +22V adapter voltage range
- VOUT from 2.5V to 19V in 16mV increments
- High efficiency at loads < 0.5W for Energy Star 2013 and ErP lot 6, 250mW from adapter with 170mW to the load
- Turbo mode support
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