TPSI3052A-Q1

The TPSI3052A-Q1 is a fully integrated, isolated switch driver, which when combined with an external power switch, forms a complete isolated solid state relay (SSR). With a nominal gate drive voltage of 17V with 1.5/2.5A peak source and sink current, a large variety of external power switches can be selected to meet a wide range of applications. The TPSI3052A-Q1 generates its own secondary bias supply from the power received from its primary side, so an isolated secondary supply bias is not required. Additionally, the TPSI3052A-Q1 can optionally supply power to external supporting circuitry for various application needs.

Available in three-wire mode only, the TPSI3052A-Q1 features low emissions technology, allowing the device to pass [CISPR25 Class 5 emission in many applications]. The power transfer of the TPSI3052A-Q1 is automatically controlled by bidirectional communication between the primary and secondary side. This allows the device to transfer only as much power as needed, further lowering emissions in many applications.

The secondary side provides a regulated, floating supply rail of 17V for driving a large variety of power switches with no need for a secondary bias supply. The application can drive single power switches for DC applications or dual back-to-back power switches for AC applications, as well as various types of SCR. The TPSI3052A-Q1 integrated isolation protection is extremely robust with much higher reliability, lower power consumption, and increased temperature ranges than traditional mechanical relays and optocouplers.