The TL494CDR is an integrated circuit (IC) developed by Texas Instruments, designed for use as a pulse-width modulation (PWM) controller. Below is an overview of the TL494CDR IC:


TL494CDR Overview:

  • Manufacturer: Texas Instruments
  • Part Number: TL494CDR
  • Type: PWM Controller IC
  • Package: 16-SOIC (Small Outline Integrated Circuit)
  • Function: Regulating Controller for Switched-Mode Power Supplies
  • Topology: Multiple Topologies Supported

Key Features:

  • Pulse-Width Modulation (PWM) Control: Regulates the output pulse width based on control signals.
  • Voltage Regulation: Used in switched-mode power supply applications for voltage regulation.
  • Error Amplifiers: Typically includes onboard error amplifiers for feedback control.
  • Soft-Start Functionality: Supports soft-start features for controlled power-up.
  • Multiple Topologies: Compatible with various power supply circuit topologies.

Pin Configuration (16-SOIC):

  • The 16-SOIC package has pins dedicated to functionalities like error amplifiers, PWM control, feedback loops, etc. Specific pin functions can be found in the TL494CDR datasheet.


  • Power Supplies: Used in offline and DC-DC power supply designs.
  • Voltage Regulators: Efficiently regulates output voltage in power electronics.
  • Inverters: Employed in inverter circuits for various applications.
  • Battery Chargers: Utilized in designing battery charging systems.
  • Power Inverters: Integration in power inverter systems for DC to AC conversion.


  • Efficiency: Enhances power supply efficiency through PWM control.
  • Flexibility: Supports various power supply topologies for design flexibility.
  • Reliability: Ensures stable and regulated output for consistent performance.
  • Integration: Compact SOIC package enables easy integration into PCB designs.

Suggested Projects:

  • SMPS Design: Implementing switch-mode power supplies for different purposes.
  • Power Electronics: Developing efficient power conversion circuits.
  • Voltage Regulation: Building voltage regulation systems with precision control.
  • Industrial Control: Incorporating PWM control in industrial control systems.


  • Datasheet: Refer to the Texas Instruments datasheet for the TL494CDR for detailed pin configurations, application circuits, and design guidelines.
  • Design Considerations: Ensure proper external component selection for voltage/current ratings and system requirements.

The TL494CDR from Texas Instruments is a versatile PWM controller IC suitable for a wide range of power supply applications, offering efficient voltage regulation and control features essential for stable power management in various electronic systems.

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