Function of isolation voltage of buck module power supply(1)
input protection circuit
General module power products have built-in filters, which can meet the requirements of general power supply applications. If a more demanding power system is required, an input filter network should be added. An LC or π-type network can be used, but care should be taken to choose a smaller inductance and larger capacitance as much as possible.
In order to prevent the transient high voltage of the input power supply from damaging the power supply of the module, it is recommended that the user connect a transient absorption diode at the input end and use it with a fuse to ensure that the module is within a safe input voltage range. In order to reduce common-mode noise, Y (Cy) capacitors can be added, and a few nf high-frequency capacitors are generally selected. R is a fuse, D1 is a protection diode, and D2 is a transient absorption diode (P6KE series).
buck high voltage input module power supply supply are used in different places, and the matching specifications do not need to be selected. For example, AD-DC power supply is isolated. Generally, the isolation breakdown voltage specified in manufacturing sites is 5000VAC to 6000VAC; Generally, the manufacturing sites of dcdc power modules specify 1500VDC to 2500VDC, which will be higher in special manufacturing industries, and 6000VDC is specified in the medical device industry. Zhuo Xuan Electronic Technology is a professional manufacturer of buck high voltage input module power supply supply, dcdc power module, acdc high voltage input module power supply supply, high voltage input power module, customized buck high voltage input module power supply supply, 3W/10W/25w/75w/100W/200W and other dcdc high voltage input module power supply supply, which can provide a stable and reliable controller voltage for the customer system, and reasonably alleviate the problem of good and bad power use caused by static electricity and surge. It is also a data collection Expected plan for common power of communication subsystem.