DATASHEET
ISL78210 FN7583
Rev 1.00
December 4, 2013 Automotive PWM DC/DC Voltage Controller
The ISL78210 IC is a Single-Phase Synchronous-Buck PWM
voltage controller featuring Intersil’s Robust Ripple Regulator
(R3в„ў) Technology. The ISL78210 provides a low cost solution
for compact high performance applications. The wide 3.3V to
25V input voltage range is ideal for systems that run on battery
or AC adapter power sources. Resistor programmed output
voltage setpoint and capacitor programmed soft-start delay
allow for fast and easy implementation. Robust integrated
MOSFET drivers and Schottky bootstrap diode reduce the
implementation area and lower component cost.
Intersil’s R3 Technology™ combines the best features of both
fixed-frequency and hysteretic PWM control. The PWM
frequency is 300kHz during static operation, becoming
variable during changes in load, setpoint voltage, and input
voltage when changing between battery and AC adapter
power. The modulators ability to change the PWM switching
frequency during these events in conjunction with external
loop compensation produces superior transient response. For
maximum efficiency, the converter automatically enters …
