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Design DRV120
SLVSBG3C – JUNE 2012 – REVISED JUNE 2016 DRV120 Single-Channel Relay, Solenoid, Valve Low-Side Driver
With Current Regulation
1 Features 3 Description The DRV120 device is a PWM current driver for
solenoids. The device is designed to regulate the
current with a well-controlled waveform to guarantee
activation and to reduce power dissipation at the
same time. The solenoid current is ramped up fast to
ensure opening of the valve or relay. After the initial
ramping, solenoid current is kept at peak value to
ensure the correct operation, after which it is reduced
to a lower hold level in order to avoid thermal
problems and reduce power dissipation. 1 Integrated MOSFET With PWM to Control
Solenoid Current
– Integrated Sense Resistor for Regulating
Solenoid Current
Fast Ramp-Up of Solenoid Current to Guarantee …
