Overview
The DRV104PWPRG4, produced by Texas Instruments, is a high-side DMOS power switch that utilizes a pulse-width modulated (PWM) output. This device is designed to drive electromechanical and thermal devices such as solenoids, valves, relays, actuators, heaters, and lamps. The DRV104 features adjustable PWM output, allowing for fine control over the power delivered to the load, which enhances reliability and reduces heat rise. It operates over a wide supply range of +8V to +32V and is optimized for applications requiring both high initial pull-in current and lower continuous hold current.
Key Specifications
| Parameter | Conditions | 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 | ||
| Oscillator Frequency Range | 500Hz | 100kHz | Hz | ||
| Output Drive Current | 1.2A | A | |||
| Operating Temperature Range | –40°C | +85°C | °C | ||
| Package Type | HTSSOP-14 Surface-Mount PowerPAD™ |
Key Features
- High Output Drive: Up to 1.2A
- Wide Supply Range: +8V to +32V
- PWM Output: Adjustable internal oscillator from 500Hz to 100kHz
- Digitally Controlled Input: Compatible with standard TTL levels
- Adjustable Delay and Duty Cycle: Controlled by resistors, analog voltages, or D/A converters
- Over-Current Indicator Flag: Indicates thermal shutdown or over-current conditions
- Thermal Shutdown with Indicator Flag: Protects the IC from overheating
- Internal Current Limit: Prevents excessive current draw
- Strong Initial Solenoid Closure and Soft Hold Mode: Automatically switches to soft hold mode for power savings
Applications
- Electromechanical Drivers: Solenoids, valves, positioners, actuators, relays, power contactor coils, heaters, and lamps
- Fluid and Gas Flow Systems: Control of valves and actuators
- Factory Automation: Driving various electromechanical devices
- Part Handlers and Sorters: Control of solenoids and actuators
- Photographic Processing: Control of thermal devices
- Environmental Monitoring and HVAC: Control of heaters, coolers, and other thermal devices
- Thermoelectric Coolers: Efficient control of cooling systems
- Motor Speed Controls: Adjustable speed control for motors
- Solenoid Protectors: Protection and control of solenoids
- Medical Analyzers: Precise control of electromechanical and thermal devices
Q & A
- What is the primary function of the DRV104PWPRG4?
The DRV104PWPRG4 is a high-side DMOS power switch that employs a pulse-width modulated (PWM) output to drive electromechanical and thermal devices.
- What is the operating voltage range of the DRV104PWPRG4?
The DRV104PWPRG4 operates over a supply voltage range of +8V to +32V.
- How can the PWM output frequency be adjusted?
The PWM output frequency can be adjusted by connecting a resistor between the Osc Freq Adj pin and ground, allowing frequencies from 500Hz to 100kHz.
- What is the maximum output drive current of the DRV104PWPRG4?
The maximum output drive current is up to 1.2A.
- How is the duty cycle of the PWM output controlled?
The duty cycle can be controlled using a resistor, an analog voltage, or the voltage output of a D/A converter.
- What protection features does the DRV104PWPRG4 have?
The DRV104PWPRG4 features thermal shutdown with an indicator flag, internal current limit, and over-current indicator flag.
- What is the purpose of the Status OK Flag pin?
The Status OK Flag pin indicates when thermal shutdown or over-current conditions occur.
- How can the initial delay to PWM mode be adjusted?
The initial delay to PWM mode can be adjusted by connecting a capacitor between the Delay Adjust pin and ground.
- What is the operating temperature range of the DRV104PWPRG4?
The operating temperature range is from –40°C to +85°C.
- In what package type is the DRV104PWPRG4 available?
The DRV104PWPRG4 is available in an HTSSOP-14 Surface-Mount PowerPAD™ package.
