Transcription of TL494 - Switch mode Pulse Width Modulation Control Circuit
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TL494 - Switch mode Pulse Width Modulation Control Circuit
DATA Semiconductor Components Industries, LLC, 2005 August, 2021 Rev. 71 Publication Order Number: TL494 /DSwitch mode Pulse WidthModulation Control CircuitTL494, NCV494 The TL494 is a fixed frequency, Pulse Width Modulation controlcircuit designed primarily for Switch mode power supply Complete Pulse Width Modulation Control Circuitry On Chip Oscillator with Master or Slave Operation On Chip Error Amplifiers On Chip V Reference Adjustable Deadtime Control Uncommitted Output Transistors Rated to 500 mA Source or Sink Output Control for Push Pull or Single Ended Operation Undervoltage Lockout NCV Prefix for Automotive and Other Applications Requiring Siteand Control Changes Pb Free Packages are
The TL494 is a fixed−frequency pulse width modulation control circuit, incorporating the primary building blocks required for the control of a switching power supply. (See Figure 1.) An internal−linear sawtooth oscillator is frequency− programmable by two external components, RT and CT. The approximate oscillator frequency is determined by:
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