1. These two power control chips have their own characteristics, and there is no absolute good or bad.
Select this parameter based on the application scenario. 2.494 power control chip, high frequency performance, suitable for the design of high frequency switching power supply; The 3842 power control chip is suitable for switching power supply consumer electronics applications, and the control is simple and easy to implement. 3. It is necessary to consider the power output power, efficiency, cost, noise, reliability and other factors in the selection, combined with the specific design requirements.
At the same time, you can also refer to the design experience and evaluation results of other engineers to make decisions.
3842 OK. tl494 is driven by a half-bridge connected power tube, suitable for higher power, UC3842 driven by a single tube it excited power tube, since it is used for single-chip microcomputer, the power is small, with UC3842 is more suitable.
Hello, these two devices have their own advantages and disadvantages, the specific selection should be selected according to the specific application scenario and requirements.
The 494 power controller has the characteristics of wide input voltage range, large output power, wide output voltage range, good stability, etc., suitable for high-power switching power supply and other applications.
3842 PWM controller has the characteristics of fast response speed, strong anti-interference ability and high control accuracy, which is suitable for high frequency switching power supply and other applications.
Therefore, the selection should be based on the specific application scenarios and requirements.