SLLSFW9 April 2024 ISO7741TA-Q1
ADVANCE INFORMATION
When the supply voltage at VCC ramps up to 2.25V, the internal oscillator starts operating. The output stage begins switching but the amplitude of the drain signals at D1 and D2 has not reached the full maximum yet.
ISO7741T-Q1 devices support soft-start feature. Upon power up, the gate drive of the output power-MOSFET is gradually increased over a period of time from 0V to V CC. Soft-start prevents high inrush current from V CC while charging large secondary side decoupling capacitors, and also prevents overshoot in secondary voltage during power-up.