The TPSI2140-Q1 is a 1200-V, 50-mA automotive isolated switch optimized for high voltage switching in measurement applications, especially those that require switching across an isolation barrier or galvanically isolated domain. Common end equipments include energy storage systems (ESS), solar panel arrays, EV chargers, and EV battery management systems. The device enables the system designer to reduce cost and improve reliability by replacing mechanical relays and optically isolated devices.

The TPSI2140-Q1's enable input is fail safe and does not need to be driven from the same domain as the VDD pin supply.

The TPSI2140-Q1 supports an input voltage range of 4.5 V to 20 V on the VDD primary supply pin and a logic high of 2.1 V to 20 V on the enable pin. The secondary side supports high voltage switching from –1200 V to 1200 V.

TI Reference Designs

The TI reference designs linked below are a helpful introduction to high voltage applications using the TPSI2140-Q1. To maximize the thermal performance of the TPSI2140-Q1 for dielectric withstand testing (HiPot), please follow the Layout Guidelines contained within this datasheet.

• TIDA-010232: High Voltage Insulation Monitoring
• TIDA-01513: Automotive High Voltage and Isolation Leakage Measurements