JAJSOW6C November 2007 – January 2024 TPS5420-Q1
PRODUCTION DATA
The regulator employs a fixed-frequency PWM control method. First, the feedback voltage (VSENSE pin voltage) is compared to the constant voltage reference by the high-gain error amplifier and compensation network to produce a error voltage. Then, the error voltage is compared to the ramp voltage by the PWM comparator. In this way, the error voltage magnitude is converted to a pulse width that is the duty cycle. Finally, the PWM output is fed into the gate drive circuit to control the on time of the high-side MOSFET.