ADI’s AD8452 is a highly integrated precision analog front end, controller, and SMPS PWM-driver for high volume battery testing and formation manufacturing. A precision instrumentation amplifier measures the battery charge/discharge current to better than ±0.1% accuracy while an equally accurate difference-amplifier measures the battery voltage. The AD8452 simplifies designs by providing excellent performance, functionality, and overall reliability in a space-saving 48-lead, 7 mm x 7 mm x 1.4 mm LQFP package.
The AD8452’s higher level of integration and ease-of-use enable the implementation of power recycling with 50% more channels, lowering system cost, and increasing more testing capacity in the same space. The device is ideal for Li-ion battery formation and testing.
| Features |
- Integrated constant-current (CC) and constant-voltage (CV) modes with automatic switch-over
- Precision measurement of voltage and current
- Independent feedback control blocks
- Highly accurate, factory-trimmed instrumentation and differential amplifiers:
- In-amp for current-sense gain: 66 V/V
- Diff-amp for voltage-sense gain: 0.4 V/V
- Maximum offset voltage drift = 0.6 µV/C
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- Maximum gain drift: 3 ppm/C
- Current sense CMRR: 116 dB minimum
- Popular switch-mode power supply (SMPS) controller for charge/discharge
- High PWM linearity with internal ramp voltage
- 50 kHz to 300 kHz user controller switching frequency
- Synchronization output or input with adjustable phase shift
- Programmable soft start
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| Applications |
- Battery formation and testing
- High efficiency battery test systems with recycle capability
- Batter conditioning (charging and discharging) systems
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ADI’s AD8452 is a highly integrated precision analog front end, controller, and SMPS PWM-driver for high volume battery testing and formation manufacturing. A precision instrumentation amplifier measures the battery charge/discharge current to better than ±0.1% accuracy while an equally accurate difference-amplifier measures the battery voltage. The AD8452 simplifies designs by providing excellent performance, functionality, and overall reliability in a space-saving 48-lead, 7 mm x 7 mm x 1.4 mm LQFP package.
