PT6646P

DC to DC converters are widely used in many different fields. The PT6646P is a representative of such products, which is a digital control micro-power frequency DC DC converter with a rated power of 10 Watts. It has wide application field and its working principle can be summarized as follwing.

Application Field

PT6646P DC to DC converter has multiple output types, such as 12v, 15v, 24v, or 48v with a ±5% voltage accuracy. It has a wide input voltage range from 10~36V, and it is an industrial-level module with a high conversion efficiency of up to 94%. It is a great choice for automotive, automotive electronic products, LED displays, distributed power supply systems, 3C laser machines, battery backup systems, and so on. It is also very applicable for embedded systems, medical instruments, communication systems, instrumentation, and other low-power electrical and electronic equipment.

Working Principle

The working principle of the PT6646P is as simple as its structure. Firstly, when the power is on, the voltage and current acting on the main circuit is selected to control the output voltage according to the output command. The voltage and current output of the main circuit is then compared with the output command on the control loop, and if the output is not the expected one, it will adjust the voltage and current of the main circuit until it reaches the voltage command. While the output voltage is stabilized in the selected state, the internal power components enter into a state of standby, so that the power consumption of the module is minimized.

The main circuit of the PT6646P DC to DC converter is composed of two modules: one switching module and one control module. The switching module mainly consists of an N-channel MOSFET and a Schottky diode, and is used to convert the AC input voltage into a DC output voltage. The control module is mainly composed of a micro-power control chip, a diode bridge rectifying circuit, and a small capacitor which is used to store the power supplied by the rectifying circuit. This enables the module to effectively reduce the noise and convert the rectified voltage into the required output voltage.

The micro-power frequency control chip of the PT6646P plays a decisive role in the entire working process. It first converts the power supply voltage into a DC voltage through a rectifying circuit, and then controls the switches of the switching module to ensure an appropriate duty cycle. As soon as the power supply voltage passes the lower limit, the control module will reduce the duty cycle, creating a soft start. During the power on process, the frequency of the output voltage rises, and when the output voltage reaches the value of the input voltage, the frequency becomes stable.

Conclusion

In conclusion, the PT6646P is a high quality DC to DC converter which is widely used in many different industries and fields. It has a wide input voltage range and can provide an output of ±5% voltage accuracy. It is also highly efficient, and its micro-power system effectively reduces the power consumption. Therefore, it can be concluded that the PT6646P is an ideal choice for many applications.