Part Details for SN74LV4053A by Texas Instruments

此离线反激式参考设计采用 UCC28740 控制器，可从交流输入 (180VAC - 264VAC) 生成 3 个隔离式输出（30mA 时为 5V，20mA 时为 15V）。此设计可提供 750mW 的输出功率。UCC28740 使用光耦合器调节 5V 输出，并改善瞬态响应。谷底开关技术可降低开关损耗，并保持高效率。

This reference design circuit introduces a highly accurate: bi-directional current power solution used in battery test systems (BTS). The maximum current capability is 6A with lower than 0.05% full scale accuracy. Controlling through a logic pin: the circuit can be used to charge or discharge a battery. During charging: the battery voltage can also be controlled through an analog signal. With fully integrated buck and boost converters: the circuitry is simple and easy to design. An evaluation board was built to validate the performance of this solution.

This reference design introduces a large current: highly accurate and bi-directional power solution used in battery test systems (BTS). It includes a LM5170EVM-BIDIR and a signal control board. The LM5170EVM-BIDIR is an evaluation board  to showcase the high performance of the dual-channel bidirectional current controller LM5170-Q1. The signal control board is built with precision amplifiers: which operates with the LM5170EVM-BIDIR to further improve the current accuracy. Bench tests shows that the current accuracy is better than 0.05% full scale.

This reference design provides a modular battery test solution allowing users to have the flexibility to test batteries at different current levels with one design. This design leverages the TIDA-01041 reference design by providing two 100-A battery testers that can work independently or be connected in parallel to increase the maximum current output from 100 A to 200 A. This design describes the design theory: part selection: and optimization of this solution.

Li-Ion battery formation and electrical testing require accurate voltage and current control: usually to better than ±0.05% over the specified temperature range.  This reference design proposes a solution for high-current (up to 50 A) battery tester applications supporting input (bus) voltages from 8 V–16 V and output load (battery) voltages from 0V–5V. The design utilizes an integrated multi-phase bidirectional controller: LM5170: combined with a high precisiondata converters and instrumentation amplifiers to achieve charge and discharge accuracies of 0.01% full scale. To maximize battery capacity and minimize battery formation time: the design uses highly-accurate constant current (CC) and constant voltage (CV) calibration loops with a simplified interface. All key design theories are described guiding users through the part selection process and optimization. Finally: schematic: board layout: hardware testing: and results are also presented.