Product details

Withstand isolation voltage (VISO) (Vrms) 5000 FET External Number of channels 1 Supply voltage (min) (V) 3 Supply voltage (max) (V) 48 Gate drive voltage (V) 15 Features Inductive isolation TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Turnon time (enable) (ns) 4000 Turnoff time (disable) (ns) 3000 Rating Automotive
Withstand isolation voltage (VISO) (Vrms) 5000 FET External Number of channels 1 Supply voltage (min) (V) 3 Supply voltage (max) (V) 48 Gate drive voltage (V) 15 Features Inductive isolation TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Turnon time (enable) (ns) 4000 Turnoff time (disable) (ns) 3000 Rating Automotive
SO-MOD (DWZ) 8 67.275 mm² 5.85 x 11.5
  • 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 sink current
  • 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
  • AEC Q-100 qualified for automotive applications:
    • Temperature grade 1: –40 to +125°C, TA
  • Safety-related certifications
    • Planned: 7071-VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • Planned: 5-kVRMS isolation for 1 minute per UL 1577
  • 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 sink current
  • 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
  • AEC Q-100 qualified for automotive applications:
    • Temperature grade 1: –40 to +125°C, TA
  • Safety-related certifications
    • Planned: 7071-VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • Planned: 5-kVRMS isolation for 1 minute per UL 1577

The TPSI3052-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 15 V with 1.5/3.0-A peak source and sink current, a large variety of external power switches can be chosen to meet a wide range of applications. The TPSI3052-Q1 generates its own secondary bias supply from the power received from its primary side, so no isolated secondary supply bias is required. Additionally, the TPSI3052-Q1 can optionally supply power to external supporting circuitry for various application needs.

The TPSI3052-Q1 supports two modes of operation based on the number of input pins required. In two-wire mode, typically found in driving mechanical relays, controlling the switch requires only two pins and supports a wide voltage range of operation of 6.5 V to 48 V. In three-wire mode, the primary supply of 3 V to 5.5 V is supplied externally, and the switch is controlled through a separate enable. Available in three-wire mode only, the TPSI3052S-Q1 features a one-shot enable for the switch control. This feature is useful for driving SCRs that typically require only one pulse of current to trigger.

The secondary side provides a regulated, floating supply rail of 15 V 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 TPSI3052-Q1 integrated isolation protection is extremely robust with much higher reliability, lower power consumption, and increased temperature ranges than traditional mechanical relays and optocouplers.

The power transfer of the TPSI3052-Q1 can be adjusted by selecting one of seven power level settings using an external resistor from the PXFR pin to VSSP. This action allows for tradeoffs in power dissipation versus power provided on the secondary depending on the needs of the application.

The TPSI3052-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 15 V with 1.5/3.0-A peak source and sink current, a large variety of external power switches can be chosen to meet a wide range of applications. The TPSI3052-Q1 generates its own secondary bias supply from the power received from its primary side, so no isolated secondary supply bias is required. Additionally, the TPSI3052-Q1 can optionally supply power to external supporting circuitry for various application needs.

The TPSI3052-Q1 supports two modes of operation based on the number of input pins required. In two-wire mode, typically found in driving mechanical relays, controlling the switch requires only two pins and supports a wide voltage range of operation of 6.5 V to 48 V. In three-wire mode, the primary supply of 3 V to 5.5 V is supplied externally, and the switch is controlled through a separate enable. Available in three-wire mode only, the TPSI3052S-Q1 features a one-shot enable for the switch control. This feature is useful for driving SCRs that typically require only one pulse of current to trigger.

The secondary side provides a regulated, floating supply rail of 15 V 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 TPSI3052-Q1 integrated isolation protection is extremely robust with much higher reliability, lower power consumption, and increased temperature ranges than traditional mechanical relays and optocouplers.

The power transfer of the TPSI3052-Q1 can be adjusted by selecting one of seven power level settings using an external resistor from the PXFR pin to VSSP. This action allows for tradeoffs in power dissipation versus power provided on the secondary depending on the needs of the application.

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Design & development

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Evaluation board

TPSI3052Q1EVM — TPSI3052-Q1 evaluation module with reinforced isolation and 15-V gate drive

The TPSI3052Q1EVM is a two-copper layer board containing multiple test points and jumpers in order to fully evaluate the functionality of the TPSI3052-Q1 device.

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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs

TIDA-050063 — High-voltage solid-state relay active precharge reference design

This reference design introduces an innovative circuit topology to precharge large DC link capacitors for hybrid electric vehicles (HEV) and electric vehicles (EV). The reference design features a system which does not require a microcontroller and can be operated with a 5-V supply. The reference (...)
Design guide: PDF
Reference designs

TIDA-050058 — Zero-cross switching for solid-state relays reference design

This reference design shows how to achieve zero-cross switching (ZCS) with a solid-state relay. The reference design features the TPSI3050-Q1 isolated switch driver. TPSI3050-Q1 device integrates a laminate transformer to achieve isolation while transferring signal and power to the secondary side. (...)
Design guide: PDF
Reference designs

TIDA-050059 — Overcurrent and overtemperature protection for solid-state relays reference design

This reference design shows how to achieve overcurrent and overtemperature protection for a solid-state relay. The reference design features the TPSI3050-Q1 5-kVRMS reinforced isolated switch driver. TPSI3050-Q1 device integrates a laminate transformer to achieve isolation while transferring signal (...)
Design guide: PDF
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