Tl494 Switching Power Supply Schematic

In the following paragraphs we learn the important functions of the ic tl494 and how to use it in pwm circuits.

Tl494 switching power supply schematic. 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. The design of the tl494 not only incorporates the primary building blocks required to control a switching power supply but also addresses many basic problems and reduces the amount of additional circuitry required in the total design. This power amplifier circuit can be supplied with 30v to 100v dc asymmetric power supply using 8vdc bias voltage up to 12vdc. See figure 1 an internal linear sawtooth oscillator is frequency programmable by two external components rt.

To make this power amplifier please see the circuit schematic of tl494 power amplifier below along with pcb layout design. Designed primarily for power supply control this device offers the flexibility to tailor the power supply control circuitry to a specific application. The schematic diagram is based on the design case presented in the reference designing switching voltage regulators with the tl494 texas instruments application report. The tl494 device incorporates all the functions required in the construction of a pulse width modulation pwm control circuit on a single chip.

For the output power of this amplifier can generate power up to 500watt pretty good is not it. The tl494 ic is designed in such a way that it not only features the important circuitry needed to control a switching power supply but additionally tackles several fundamental difficulties and minimizes the need of supplemental circuit stages. How to use ic tl494. Tl494 inverter circuit schematic tl494cn inverter circuit construction.