TIDA-050063

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-kV_RMS 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-A_AVG changing current to charge up to 2-mF of load capacitance.

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