具有集成电源的稳压节电电磁阀控制器 POWER SAVING SOLENOID CONTROLLER WITH INTEGRATED SUPPLY REGULATION
DESCRIPON
The DRV110 is a PWM current controller for solenoids. It is designed to regulate the current with a well
controlled waveform to reduce power dissipation. The solenoid current is ramped up fast to ensure opening of the valve or relay. After initial ramping the 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.
FEATURES
• Drives an External MOSFET With PWM to Control Solenoid Current
– External Sense Resistor for Regulating Solenoid Current
• Fast Ramp-Up of Solenoid Current to Guarantee Activation
• Solenoid Current is Reduced in Hold Mode for Lower Power and Thermal Dissipation
• Ramp Peak Current, Keep Time at Peak Current, Hold Current and PWM Clock Frequency Can Be Set Externally. They Can Also Be Operated at Nominal Values Without External Components.
• Internal Supply Voltage Regulation
– 15-V Nominal MOSFET Gate Drive Voltage
– External Pull-Up Resistor to Solenoid Supply Voltage
• Protection
– Thermal Shutdown
– Under Voltage Lockout UVLO
– Maximum Ramp Time
– Optional STATUS Output
• Operating Temperature Range: -40ºC to 105ºC
• 8-Pin and 14-Pin TSSOP Package Options
APPLICATIONS
• Electromechanical Driver: Solenoids, Valves, Relays
• White Goods, Solar, Transportation
