Software
Calculation tool
ACTIVE-PRECHARGE-CALC — Active precharge reference design (TIDA-050063) calculator tool
Spreadsheet calculator to help select component values for active precharge design based on customer requirements.
TIDA-050063
High-voltage solid-state relay active precharge reference design
TIDA-050063
Overview
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 has reinforced isolation rating of 5-kVRMS with the TPSI3052-Q1. TPSI3052-Q1 device integrates a laminate transformer to achieve isolation while transferring signal and power to the secondary side. This removes the need for a discrete isolated bias supply. In addition, the TPSI3052-Q1 device can supply power to external circuitry located on the high voltage (HV) side to monitor current. This reference design can support up to 800-V systems with up to 4-AAVG changing current to charge up to 2-mF of load capacitance.
Features
- 5-kVRMS reinforced isolation
- No isolated secondary supply required
- 800-V maximum input/output voltage
- 4-AAVG / 8-APK-PK maximum charging current
- Capable of charging 2-mF capacitor to 800-V in 400-ms
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDUF21A.PDF (1449 K)
Reference design overview and verified performance test data
TIDMB87.PDF (274 K)
Detailed schematic diagram for design layout and components
TIDMB88.PDF (155 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDMB89.PDF (200 K)
Detailed overview of design layout for component placement
TIDMB91.ZIP (2263 K)
Files used for 3D models or 2D drawings of IC components
TIDCGC7.ZIP (1598 K)
Design file that contains information on physical board layer of design PCB
TIDMB90.PDF (595 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
Low-side drivers
UCC27517A-Q1 — Automotive 4-A/4-A single-channel gate driver with 5-V UVLO and dual-input structure
Data sheet: PDF | HTMLSolid-state relays
TPSI3050-Q1 — Automotive reinforced isolated switch driver with integrated 10-V gate supply
Data sheet: PDF | HTMLSolid-state relays
TPSI3052-Q1 — Automotive reinforced isolated switch driver with integrated 15-V gate supply
Data sheet: PDF | HTMLStart development
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| Design guide | High-Voltage Solid-State Relay Active Precharge Reference Design (Rev. A) | PDF | HTML | Jan. 24, 2023 |
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