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TPSI31P1-Q1

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Automotive active pre-charge controller with 17V isolated gate driver and bias supply

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Data sheet

TPSI31P1-Q1

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Data sheet Order now

Product details

Withstand isolation voltage (VISO) (Vrms) 5000 FET External Number of channels 1 Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Gate drive voltage (V) 17 Features Inductive isolation TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Turnoff time (disable) (ns) 3000 Rating Automotive Isolation rating Reinforced CMTI (min) (kV/µs) 100 Working isolation voltage (VIOWM) (Vrms) 1697 Surge isolation voltage (VIOSM) (VPK) 12000 Transient isolation voltage (VIOTM) (VPK) 7070
Withstand isolation voltage (VISO) (Vrms) 5000 FET External Number of channels 1 Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Gate drive voltage (V) 17 Features Inductive isolation TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Turnoff time (disable) (ns) 3000 Rating Automotive Isolation rating Reinforced CMTI (min) (kV/µs) 100 Working isolation voltage (VIOWM) (Vrms) 1697 Surge isolation voltage (VIOSM) (VPK) 12000 Transient isolation voltage (VIOTM) (VPK) 7070
UNKNOWN (DVX) 16 See data sheet
  • Replaces large, high power pre-charge resistors using a switched converter architecture
  • Improved thermal performance compared to passive pre-charge solutions
  • Hysteretic current control for linear charging of downstream capacitance
  • Drives external power transistors such as Si, SiC MOSFET, or IGBT
  • Integrated isolated secondary supply for gate bias
  • 17V gate drive, 1.5A and 2.5A peak source and sink current
  • AEC Q-100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Safety-related certifications
    • Planned: 7070VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • Planned: 5kVRMS isolation for 1 minute per UL 1577
  • Replaces large, high power pre-charge resistors using a switched converter architecture
  • Improved thermal performance compared to passive pre-charge solutions
  • Hysteretic current control for linear charging of downstream capacitance
  • Drives external power transistors such as Si, SiC MOSFET, or IGBT
  • Integrated isolated secondary supply for gate bias
  • 17V gate drive, 1.5A and 2.5A peak source and sink current
  • AEC Q-100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Safety-related certifications
    • Planned: 7070VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • Planned: 5kVRMS isolation for 1 minute per UL 1577

The TPSI31P1-Q1 is designed to be used in automotive pre-charge systems as an alternative to traditional passive pre-charge architectures that typically include costly electromechanical relays (EMR), along with bulky, high power resistors. The TPSI31P1-Q1, combined with external power switches, power inductor and diode, forms an active pre-charge solution. The inductor current is continuously monitored and controlled in a hysteretic mode of operation by the TPSI31P1-Q1 to linearly charge the large capacitance of the downstream system. The TPSI31P1-Q1 is an isolated switch driver that generates its own secondary bias supply from power received on its primary side, therefore no isolated secondary supply is required. With a gate drive voltage of 17V with 1.5A and 2.5A peak source and sink current, a large availability of power switches can be used including SiC FET and IGBT.

The TPSI31P1-Q1 integrates a communication back-channel that transfers status information from the secondary side to the primary side via open-drain output, PGOOD (Power Good) and indicates when the secondary power is valid.

The TPSI31P1-Q1 reinforced isolation is extremely robust with much higher reliability, lower power consumption, and increased temperature ranges than those found in optocouplers. Replacing the EMR and power resistor with a solid state solution can lead to reduced cost and form factor, while providing higher reliability.

The TPSI31P1-Q1 is designed to be used in automotive pre-charge systems as an alternative to traditional passive pre-charge architectures that typically include costly electromechanical relays (EMR), along with bulky, high power resistors. The TPSI31P1-Q1, combined with external power switches, power inductor and diode, forms an active pre-charge solution. The inductor current is continuously monitored and controlled in a hysteretic mode of operation by the TPSI31P1-Q1 to linearly charge the large capacitance of the downstream system. The TPSI31P1-Q1 is an isolated switch driver that generates its own secondary bias supply from power received on its primary side, therefore no isolated secondary supply is required. With a gate drive voltage of 17V with 1.5A and 2.5A peak source and sink current, a large availability of power switches can be used including SiC FET and IGBT.

The TPSI31P1-Q1 integrates a communication back-channel that transfers status information from the secondary side to the primary side via open-drain output, PGOOD (Power Good) and indicates when the secondary power is valid.

The TPSI31P1-Q1 reinforced isolation is extremely robust with much higher reliability, lower power consumption, and increased temperature ranges than those found in optocouplers. Replacing the EMR and power resistor with a solid state solution can lead to reduced cost and form factor, while providing higher reliability.
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* Data sheet TPSI31P1-Q1 Automotive Active Pre-charge Controller With 17V Isolated Gate Driver and Bias Supply datasheet PDF | HTML 16 Oct 2024
Certificate TPSI31PXQ1EVM-400 EU Declaration of Conformity (DoC) 14 Nov 2024
Functional safety information TPSI31P1-Q1 Functional Safety FIT Rate, FMD, and Pin FMA PDF | HTML 16 Oct 2024
EVM User's guide TPSI31P1-Q1 Evaluation Module User's Guide PDF | HTML 29 Aug 2024

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Evaluation board

TPSI31PXQ1EVM — TPSI31Px-Q1 evaluation module

The TPSI31Px-Q1 evaluation module (EVM) helps designers evaluate the operation and performance of TPSI31P1-Q1 in an electric vehicle (EV) or hybrid electric vehicle (HEV) high-side active precharge application for charging a DC-link capacitor.

  • TPSI31PXQ1EVM: 800VDC with 10AAVG
  • TPSI31PXQ1EVM-400: (...)
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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 (...)
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