Texas Instruments DRV110 节能螺线管控制器
Texas Instruments DRV110节能螺线管控制器是一款螺线管用 PWM 电流控制器。TI DRV110 旨在通过对波形的良好控制来对电流进行调节，从而减少功率耗散。为确保能开启阀门或继电器，需要快速提高螺线管电流。为保证动作正确，螺线管电流在首次提升后需要保持在峰值状态；此后要降低并保持在较低水平，以免出现散热问题，并减少功率耗散。峰值电流持续时间通过外部电容器设定。电流爬升并保持峰值以及PWM频率等可通过外部电阻单独设定。DRV110 螺线管控制器的 VIN 限定在15V，这也是外部开关装置的栅极驱动电压。
The peak current duration is set with an external capacitor. The current ramp peak and hold levels, as well as PWM frequency, can be independently set with external resistors. The DRV110 limits its supply at VIN to 15V, which is also the gate drive voltage of an external switching device.
特性
- Internal Zener Diode on Supply Pin for High-Voltage Operation
- 120 and 230V AC Supply Through Rectifier and RS Resistor
- 24V, 48V, 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
应用
- Electromechanical drivers
- Solenoids
- Valves
- Relays
- Contactors
- Switchgear
- Pneumatics
- White goods
- Solar, transportation
- Smart grid
- Power distribution
Functional Block Diagram
发布日期: 2012-06-07
| 更新日期: 2022-03-11