Overview
The DRV104PWPR from Texas Instruments is a 1.2A PWM high-side driver designed for driving electromechanical devices such as solenoids, valves, relays, actuators, and positioners, as well as thermal devices like heaters, coolers, and lamps. This DMOS power switch features a pulse-width modulated (PWM) output, which helps conserve power and reduce heat rise, enhancing reliability. The device operates over a wide supply range of +8V to +32V and is optimized for various applications requiring precise control over the load.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Output Saturation Voltage (Source) | IO = 1A | +0.45 | +0.65 | V | |
| Output Saturation Voltage (Source) | IO = 0.1A | +0.05 | +0.07 | V | |
| Current Limit | 1.2 | 2.0 | 2.6 | A | |
| Leakage Current | DMOS Output Off, VPS = VS = 32V | 1 | 10 | µA | |
| Supply Voltage Range | +8V | +32V | V | ||
| Operating Temperature Range | –40°C | +85°C | °C | ||
| Oscillator Frequency Range | 500Hz | 100kHz | Hz |
Key Features
- High Output Drive: 1.2A
- Wide Supply Range: +8V to +32V
- PWM Output: Adjustable internal oscillator and duty cycle
- Digitally Controlled Input: Compatible with standard TTL levels
- Adjustable Delay and Duty Cycle: Controlled by external resistors, analog voltages, or D/A converters
- Over-Current Indicator Flag: Indicates thermal shutdown or over-current
- Thermal Shutdown with Indicator Flag: Protects the IC from overheating
- Internal Current Limit: Prevents excessive current draw
- Package: HTSSOP-14 Surface-Mount PowerPAD™
Applications
- Electromechanical Drivers: Solenoids, valves, positioners, actuators, relays, power contactor coils
- Fluid and Gas Flow Systems: Control of valves and pumps
- Factory Automation: Control of various industrial actuators
- Part Handlers and Sorters: Precision control of mechanical components
- Photographic Processing: Control of thermal and mechanical devices
- Environmental Monitoring and HVAC: Control of heating, cooling, and ventilation systems
- Thermoelectric Coolers: Efficient control of cooling devices
- Motor Speed Controls: Precise speed control of motors
- Solenoid Protectors: Protection and control of solenoid devices
- Medical Analyzers: Control of precise mechanical and thermal components
Q & A
- What is the output current capability of the DRV104?
The DRV104 can drive up to 1.2A of output current. - What is the supply voltage range for the DRV104?
The DRV104 operates over a supply voltage range of +8V to +32V. - How can the duty cycle of the PWM output be adjusted?
The duty cycle can be adjusted using an external resistor, an analog voltage, or the output of a D/A converter. - What is the purpose of the Status OK Flag pin?
The Status OK Flag pin indicates when thermal shutdown or over-current occurs. - What types of loads can the DRV104 drive?
The DRV104 can drive electromechanical devices such as solenoids, valves, relays, and actuators, as well as thermal devices like heaters and lamps. - How is the oscillator frequency adjusted?
The oscillator frequency can be adjusted using an external resistor connected to the Oscillator Frequency Adjust pin. - What is the operating temperature range of the DRV104?
The DRV104 operates over a temperature range of –40°C to +85°C. - What protection features does the DRV104 have?
The DRV104 features thermal shutdown, internal current limit, and over-current indicator flag. - What package type is the DRV104 available in?
The DRV104 is available in a HTSSOP-14 Surface-Mount PowerPAD™ package. - Can the DRV104 be used in master-slave configurations?
Yes, the DRV104 can operate in both master and slave modes using the SYNC pin.
