Part Details for TLC372 by Texas Instruments

The TIDA-01540 reference design reduces system cost and enables a compact design for a reinforced isolated 10kW three phase inverter. A lower system cost and compact form factor is achieved by using a dual gate driver in a single package and bootstrap configuration to generate floating voltages for the gate drive power supply. The dual gate driver UCC21520 has a built-in dead time insertion configurable by a resistor option. The unique dead time insertion protects the three phase inverter against shoot-through due to overlap of the input PWM signal. System reliability is improved by implementing protection against overload: short circuit: ground fault: DC bus undervoltage and overvoltage: and IGBT module overtemperature in hardware.

The TIDA-01541 reference design reduces system cost and enables a compact design for isolated phase current and DC link voltage measurement in three-phase inverters: while achieving high bandwidth and sensing accuracy. The output of the isolated amplifiers is interfaced to the internal ADC of the MCU using a differential-to-single-ended circuit. Use of isolated amplifiers enables using SAR ADC within MCU: thereby lowering system cost without any trade-offs on the current sensing. The 8-pin package reduces board form factor. High bandwidth of the isolated amplifier enables protection of IGBTs within 3.5 µs and high-performance specifications enable high-accuracy current and voltage measurements. The DC link voltage measurement is done with a high input impedance to avoid effect of source impedance due to high-voltage potential divider to improve accuracy.

此参考设计可在总功率 100mW 的条件下，通过 2.6VDC 至 5.1VDC 输入提供隔离的 7V、+3.3V 及 -3.3V 输出。其总功率损耗低于 40mW，满负荷效率超过 70%。最低负载损失低于 25mW。采用 TPS43000 控制该多输出反激式转换器。整个电路可装在一平方英寸大的单面电路板上。

This design is a LED driver providing an ouput current of 730mA within an voltage range of 16-32V. The input voltage range is 9-19V.

This is a reference design for detecting ground fault in inverter-based drives. Inverter current is measured on both DC-positive and DC-negative bus using shunt resistors. INA149 current sense amplifier having a common-mode voltage range of +275 V is used to measure current on DC-positive bus. Current on DC-negative bus is sensed using precision operational amplifiers. The difference between the two measured currents is compared against a fixed threshold to determine the ground fault condition using high-speed comparators.

The power supply employs Full Bridge Resonant LLC with phase shift operating at ramp up, light load, low output voltage. This operating mode can replace PWM operating mode in LLC, which can improve efficiency signficantly in light load.

This referene design detects ground fault in inverter-based drives. Inverter current is measured on both DC-positive and DC-negative bus using shunt resistors. Current on DC-positive bus is measured using INA170 which is powered by a low-side switched buck converter. Current on DC-negative bus is sensed using precision op amps. The difference between the two measured currents is compared against a fixed threshold to determine the ground-fault condition using high-speed comparators.