Isolation Power Module PCBA

Isolation power module PCBA is a printed circuit board assembly used to achieve power conversion and electrical isolation functions. The following is its introduction:

Hardware composition

• Circuit board: Generally a multi-layer PCB board, which can meet the electrical performance requirements of high voltage and high current, and has good insulation and heat dissipation.

• Power devices: such as power MOSFET, IGBT, etc., are used for power conversion and control, and can withstand high voltage and current.

• Isolation devices: Common ones include optocouplers, transformers, etc., which are used to achieve electrical isolation between input and output to prevent interference and leakage.

• Drive circuit: responsible for converting the control signal into a signal suitable for driving the power device to ensure that the power device can be turned on and off quickly and stably.

• Protection circuit: including overcurrent, overvoltage, overheating protection circuits, etc., when abnormal conditions occur, the circuit can be cut off in time to protect the module and other equipment.

Working principle

• The input power signal is processed by the drive circuit to control the switching action of the power device to achieve power conversion, such as converting DC to AC or changing the voltage. At the same time, the isolation device electrically isolates the circuits on the input and output sides, which can transmit signals and prevent current from passing directly, thereby avoiding interference between the circuits on both sides and dangerous electrical connections. The protection circuit monitors various parameters in the circuit in real time, and takes immediate measures once an abnormality is found, such as shutting down the power device to prevent damage to the module.

Functional features

• Electrical isolation: It can effectively isolate circuits with different potentials, enhance system safety, reduce electromagnetic interference, and is suitable for occasions with high safety and anti-interference requirements.

• Power conversion: It can realize a variety of power conversion functions to meet the needs of different loads, has high power conversion efficiency, and can reduce energy loss.

• High reliability: The protection circuit and good heat dissipation design improve the stability and reliability of the module in harsh environments and reduce the probability of failure.

Application field

• Widely used in industrial automation, power electronics, new energy, medical equipment, communications and other fields. For example, it is used to drive motors in industrial inverters, realize power conversion and isolation in the charging system of new energy vehicles, and ensure patient safety and stable operation of equipment in medical equipment.