Texas Instruments DRV110APWR

Description

The DRV110 device is a PWM current controller for solenoids. The device 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 a peak value to ensure correct operation, after which the current is reduced to a lower hold level to avoid thermal problems and reduce power dissipation.

Features

• Internal Zener Diode on Supply Pin for HighVoltage Operation
– 120- and 230-V AC Supply Through Rectifier and RS Resistor
– 24-V, 48-V, and Higher DC Supply Through RS Resistor
• Drives an External MOSFET With PWM to Control Solenoid Current
– External Sense Resistor for Regulating Solenoid Current
• Fast Ramp-Up of Solenoid Current to Ensure 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.
• Protection
– Thermal Shutdown
– Undervoltage Lockout (UVLO)
• Optional STATUS Output
• Operating Temperature Range: –40ºC to +125ºC
• 8-Pin and 14-Pin TSSOP Package Options

Application

• Electromechanical Drivers: Solenoids, Valves, Relays, Contactors, Switchgear, Pneumatics
• White Goods, Solar, Transportation, Smart Grid, Power Distribution