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.
| Documentación principal | Tipo | Título | Opciones de formato | Fecha |
|---|---|---|---|---|
| * | Data sheet | TPSI31P1-Q1 Automotive Active Pre-charge Controller With 17V Isolated Gate Driver and Bias Supply datasheet (Rev. A) | PDF | HTML | 13 jun 2025 |
| Application note | DC-Link Capacitor Pre-charge Designs in Automotive Systems (Rev. A) | PDF | HTML | 27 abr 2026 | |
| Functional safety information | TPSI31P1-Q1 Functional Safety FIT Rate, FMD, and Pin FMA (Rev. A) | PDF | HTML | 13 jun 2025 | |
| Certificate | TPSI31PXQ1EVM-400 EU Declaration of Conformity (DoC) | 14 nov 2024 |
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
El módulo de evaluación (EVM) TPSI31Px-Q1 ayuda a los diseñadores a evaluar el funcionamiento y el rendimiento del TPSI31P1-Q1 en una aplicación de precarga activa de lado alto en un vehículo eléctrico (EV) o un vehículo eléctrico híbrido (HEV) para cargar un condensador de enlace de CC.
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| SO-MOD (DVX) | 16 | Ultra Librarian |
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Helps calculate/simulate active precharge behavior using single Rsense configuration
Updated to be specific about Rsense configuration, added propagation delay input, fixed delay calculation
Helps calculate/simulate active precharge using double Rsense configuration
Updated to be specific about Rsense configuration, added propagation delay input, fixed delay calculation
Helps calculate/simulate active precharge behavior using TPSI31P1 device as primary driver based on user input, outputting various graphs to estimate circuit behavior, aiding in design.
First version