DRV110_15 Datasheet, PDF (1/24 Pages) Texas Instruments – Power-Saving Solenoid Controller

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DRV110
SLVSBA8B – MARCH 2012 – REVISED JULY 2015
DRV110 Power-Saving Solenoid Controller With Integrated Supply Regulation
1 Features
•1 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 Pullup Resistor to Solenoid Supply
Voltage
• Protection
– Thermal Shutdown
– Undervoltage Lockout (UVLO)
– Maximum Ramp Time
– Optional STATUS Output
• Operating Temperature Range: –40ºC to 105 ºC
• 8-Pin and 14-Pin TSSOP Package Options
2 Applications
• Electromechanical Drivers: Solenoids, Valves,
Relays
• White Goods, Solar, Transportation
3 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 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.
The peak current duration is set with an external
capacitor. The current ramp peak and hold levels, as
well as PWM frequency can independently be set
with external resistors. External setting resistors can
also be omitted, if the default values for the
corresponding parameters are suitable for the
application.
The DRV110 limits its own supply at VIN to 15 V and
uses the same voltage level for the gate drive voltage
of the external switching device. Typical application
uses a MOSFET to drive the solenoid load.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV110
TSSOP (14)
TSSOP (8)
5.00 mm × 4.40 mm
3.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
I_SOLENOID
I_PEAK
I_SOLENOID vs Time
I_HOLD
t
t_KEEP
EN
t
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.