TPSI3050DWZR

Overview

The TPSI3050DWZR is a galvanically isolated switch driver from Texas Instruments, housed in an 8-pin SO-MOD (DWZ) package. It features integrated 10-V gate supply capability, eliminating the need for an isolated secondary power source. The device provides 3000 Vrms basic isolation and supports peak output currents of 1.5 A and 3 A. Key electrical parameters include a maximum propagation delay of 4 µs, rise time of 6 ns, and fall time of 5 ns. It operates within a temperature range of -40°C to +125°C with a maximum power dissipation of 350 mW.

Feature Summary

• Integrated 10-V gate supply removes requirement for external isolated secondary power sources
• Provides 3-kVRMS basic isolation for safe signal transmission across potential differences
• Capacitive coupling technology enables high-speed switching with low propagation delay

Applications

• Driving external power transistors in isolated power conversion stages
• Controlling SCRs in industrial motor drives and inverters
• High-frequency isolated switching applications requiring compact form factors

Procurement Notes

Verify the specific suffix DWZR corresponds to the SO-MOD-8 package and tape-and-reel or cut-tape availability as required by your assembly process. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure input voltage limits between 3 V and 5.5 V are strictly maintained during operation to prevent device damage.

Selection Notes

Select this component when system design requires elimination of bulky isolated DC-DC converters for gate drive power. The integrated supply simplifies PCB layout and reduces component count. Consider the 3000 Vrms isolation rating for safety-critical applications. Evaluate thermal performance given the 350 mW power dissipation limit in the SO-MOD package.

Part Context

This part belongs to the TPSI3050 series of isolated switch drivers. It is designed specifically for applications where space constraints and efficiency demands preclude traditional transformer-based isolated gate drive solutions. The integration of the gate supply voltage regulator distinguishes it from standard isolated drivers that require external auxiliary power.

Replacement Considerations

Direct substitutes must match the 8-pin SO-MOD package and 3000 Vrms isolation rating. Verify functional equivalence regarding integrated gate supply voltage and peak current capabilities before substitution.