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TL494IDis a Pulse-Width-Modulation (PWM) Control Circuit designed by Texas Instruments. It provides an integrated solution for PWM control in switching voltage regulators, offering features like wide operating frequency range, low standby power, high precision voltage reference, and programmable dead-time control. Here's a brief overview of its pins:1IN-and1IN+: These are inputs for the first error amplifier.FB: The feedback input used for controlling the PWM duty cycle.DTC: Dead-Time Control pin, which determines the relative length of time that both outputs are in the OFF-state during each cycle.CT: Timing capacitor that together withRTsets the oscillator frequency.RT: Timing resistors that together withCTsets the oscillator frequency.GND: Ground or power supply return.C1,E1,E2, andC2: Output pins for the push-pull driver stage.VCC: Power supply pin.OUTCTRL: Output Control, for selecting single-ended or push-pull output operation.REF: Reference output, usually 5V.2IN+and2IN-: These are inputs for the second error amplifier.