This reference design circuit introduces a high-precision bidirectional current power supply solution used in battery test systems (BTS). The maximum current capacity is 6A, and the full-scale accuracy is less than 0.05%. Controlled by logic pins, this circuit can be used to charge or discharge the battery. During the charging process, the battery voltage can also be controlled through analog signals. Design of this circuit is simple and easy due to the fully integrated buck and boost converters. The performance of the solution can be verified via a built-in evaluation board.
Blockdiagram
| Devices | Class | introduce | Datasheet |
|---|---|---|---|
| INA188 | semiconductor;Analog mixed-signal IC | INA188 36-V, Zero-Drift, Rail-to-Rail-Out Instrumentation Amplifier | Download |
| LM2664 | semiconductor;Power management | LM2664 Switched Capacitor Voltage Converter | Download |
| LM317L | Power/power management;The power supply circuit | LM317L 3/8 Pin 100mA Adjustable Positive Regulator | Download |
| OP07C | semiconductor;Analog mixed-signal IC | OP07C Low-Offset Voltage Operational Amplifier | Download |
| SN74LV4053A | semiconductor;Analog mixed-signal IC | SN74LV4053A Triple 2-Channel Analog Multiplexer/Demultiplexer | Download |
| TPS54821 | semiconductor;Power management | TPS54821 4.5V to 17V Input, 8-A Synchronous Step-Down Converter with Hiccup Current Limit | Download |
| TPS61178 | semiconductor;Power management | TPS61178 20-V Fully Integrated Sync Boost with Load Disconnect | Download |
| UA78L | 100mA, 30V linear regulator | Download |
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