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DRV104 from TI/BB,Texas Instruments

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DRV104

Manufacturer: TI/BB

PWM High-Side Driver (1.5A) for Solenoids, Coils, Valves, Heaters, and Lamps

Partnumber Manufacturer Quantity Availability
DRV104 TI/BB 59 In Stock

Description and Introduction

PWM High-Side Driver (1.5A) for Solenoids, Coils, Valves, Heaters, and Lamps The DRV104 is a motor driver IC manufactured by Texas Instruments (TI)/Burr-Brown (BB). Here are its key specifications:

1. **Function**: PWM motor driver with integrated current sensing.
2. **Output Current**: Up to 1.5A continuous.
3. **Supply Voltage Range**: 4.5V to 40V.
4. **PWM Frequency**: Adjustable up to 100kHz.
5. **Current Sensing**: Integrated current-sense amplifier with adjustable gain.
6. **Protection Features**: Thermal shutdown and undervoltage lockout (UVLO).
7. **Package**: 16-pin SOIC (D) and 16-pin PDIP (P).
8. **Operating Temperature Range**: -40°C to +85°C.
9. **Control Interface**: Compatible with standard PWM control signals.
10. **Applications**: Brushed DC motor control, solenoid driving, and other inductive loads. 

These are the factual specifications of the DRV104 as provided by the manufacturer.

Application Scenarios & Design Considerations

PWM High-Side Driver (1.5A) for Solenoids, Coils, Valves, Heaters, and Lamps# DRV104 PWM Power Driver Technical Documentation

## 1. Application Scenarios

### Typical Use Cases
The DRV104 from Texas Instruments/Burr-Brown is a  pulse-width modulation (PWM) power driver  primarily designed for  resistive load control  applications. The device excels in scenarios requiring precise power delivery through PWM techniques.

 Primary Applications: 
-  Heating element control  in medical equipment (patient warming systems)
-  Industrial process heating  (temperature chambers, packaging equipment)
-  Automotive seat heaters  and steering wheel warmers
-  Consumer appliance heating  (coffee makers, hair styling tools)
-  LED dimming systems  requiring high-current PWM control

### Industry Applications
 Medical Industry: 
-  Patient warming blankets  - Provides precise temperature control for therapeutic heating
-  Laboratory equipment  - Incubators and sample preparation systems
-  Diagnostic devices  - Maintaining specific temperature conditions

 Industrial Sector: 
-  Process control systems  - Regulating temperatures in manufacturing processes
-  Packaging machinery  - Heat sealing and shrink wrapping applications
-  Test equipment  - Environmental chambers and thermal testing systems

 Automotive Applications: 
-  Comfort systems  - Seat heaters, mirror defoggers, steering wheel warmers
-  Sensor heating  - Maintaining optimal operating temperatures for various sensors

### Practical Advantages and Limitations

 Advantages: 
-  High efficiency  (>90% typical) due to PWM operation
-  Wide operating voltage range  (8V to 35V) accommodates various power supplies
-  Integrated protection features  including thermal shutdown and overcurrent protection
-  Simple interface  - Requires minimal external components
-  Excellent thermal performance  with proper PCB layout

 Limitations: 
-  Limited to resistive loads  - Not suitable for inductive or capacitive loads without additional circuitry
-  Maximum current limitation  (check datasheet for specific ratings)
-  Requires heat sinking  for high-power applications
-  PWM frequency fixed  by external RC components

## 2. Design Considerations

### Common Design Pitfalls and Solutions

 Pitfall 1: Inadequate Heat Management 
-  Problem:  Overheating during continuous high-current operation
-  Solution:  Implement proper thermal vias, adequate copper area, and consider external heat sinking

 Pitfall 2: Incorrect PWM Frequency Selection 
-  Problem:  Audible noise or inefficient operation
-  Solution:  Select RC components for PWM frequency above 20kHz to avoid audible range

 Pitfall 3: Poor Power Supply Decoupling 
-  Problem:  Voltage spikes and unstable operation
-  Solution:  Use recommended decoupling capacitors close to power pins

 Pitfall 4: Incorrect Load Matching 
-  Problem:  Exceeding maximum current ratings
-  Solution:  Calculate load resistance to ensure current stays within specifications

### Compatibility Issues with Other Components

 Microcontroller Interface: 
-  Compatible  with 3.3V and 5V logic levels
-  Input impedance  typically 100kΩ, suitable for direct MCU connection
-  PWM input  accepts standard digital PWM signals

 Power Supply Requirements: 
-  Requires stable DC supply  with low ripple
-  Incompatible  with unregulated or noisy power sources
-  Supply voltage  must exceed load requirements by sufficient margin

 Load Compatibility: 
-  Optimal for resistive loads  (heaters, lamps)
-  Not recommended  for motor or solenoid control without additional protection
-  Inductive loads  require external flyback diodes

### PCB Layout Recommendations

 Power Routing: 
- Use  wide traces  for high-current paths (minimum 50 mil width for 2A current)
- Implement  power planes  where possible for better thermal

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