SDAA026 June   2025 TPSI3052

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Using a Solid-State Relay as an Isolated 15V Supply
  6. 3Topology of Totem Pole PFC for Applying Turn On Switch
  7. 4Original Implementation for Driving PFC Slow Switch at High-side and Low-side
  8. 5Achieving Performance for Driving PFC Slow Switch at High-side and Low-side
  9. 6Test Results Comparing Before and After for High-side Implementation
  10. 7Summary
  11. 8References

2 Using a Solid-State Relay as an Isolated 15V Supply

The TPSI3052 is a fully integrated, isolated switch driver with integrated bias, which when combined with an external power switch, forms a complete isolated solid state relay implementation. With a nominal gate drive voltage of 15V with peak source current (1.5A) and peak sink current (3.0A), a large variety of external power switches such as MOSFETs, IGBTs, or SCRs can be chosen to meet a wide range of applications. The TPSI3052 generates a secondary bias supply from the power received from the primary side, so no isolated secondary supply bias is required. In this case, the TPSI3052 is not used for a solid-state relay, but instead serves as a low-cost isolated bias supplyto generate a floating 15V output.

TPSI3052 Simplified Schematic Figure 2-1 TPSI3052 Simplified Schematic