Description：

The TPSI3052-Q1 is a fully integrated, isolated switchdriver, which when combined with an external powerswitch, forms a complete isolated solid state relay(SSR). With a nominal gate drive voltage of 15 Vwith 1.5/3.0-A peak source and sink current, a largevariety of external power switches can be chosen tomeet a wide range of applications. The TPSI3052-Q1generates its own secondary bias supply from thepower received from its primary side, so no isolatedsecondary supply bias is required. Additionally, theTPSI3052-Q1 can optionally supply power to externalsupporting circuitry for various application needs.

The TPSI3052-Q1 supports two modes of operationbased on the number of input pins required. Intwo-wire mode, typically found in driving mechanicalrelays, controlling the switch requires only two pinsand supports a wide voltage range of operation of 6.5V to 48 V. In three-wire mode, the primary supply of3 V to 5.5 V is supplied externally, and the switchis controlled through a separate enable. Available inthree-wire mode only, the TPSI3052S-Q1 features aone-shot enable for the switch control. This feature isuseful for driving SCRs that typically require only onepulse of current to trigger.The secondary side provides a regulated, floatingsupply rail of 15 V for driving a large varietyof power switches with no need for a secondarybias supply. The application can drive single powerswitches for DC applications or dual back-to-backpower switches for AC applications, as well as varioustypes of SCR. The TPSI3052-Q1 integrated isolationprotection is extremely robust with much higherreliability, lower power consumption, and increasedtemperature ranges than traditional mechanical relaysand optocouplers.The power transfer of the TPSI3052-Q1 can beadjusted by selecting one of seven power levelsettings using an external resistor from the PXFR pinto VSSP. This action allows for tradeoffs in powerdissipation versus power provided on the secondarydepending on the needs of the application.

 Features：

• No isolated secondary supply required

• Drives external power transistors or SCRs

• 5-kVRMS reinforced isolation

• 15-V gate drive with 1.5/3-A peak source and sinkcurrent

• Up to 50-mW supply for external auxiliary circuitry

• Supports AC or DC switching

• Supports two-wire or three-wire modes

• Seven levels of power transfer, resistor selectable

• Functional Safety-Capable– Documentation available to aid functional safetysystem design

• AEC Q-100 qualified for automotive applications:

– Temperature grade 1: –40 to +125°C, TA

• Safety-Related Certifications– 7071-VPK reinforced isolation per DIN EN IEC60747-17 (VDE 0884-17)– 5-kVRMS isolation for 1 minute per UL 1577

 Applications：

• Solid state relay (SSR)

• Battery management system

• On-board charger

• Hybrid, electric, and powertrain system

• Building automation

• Factory automation and control