The LDMUI-001 61320946C is a power module manufactured by ABB. It has the following features and application scenarios:
peculiarity
Simple design: LDMUI-001 61320946C only needs a power module, with a small number of discrete components, you can obtain power.
Input and output options are diverse: the module power supply generally has a variety of input and output options, and the user can also repeatedly overlap or cross overlap to form a modular combination power supply to achieve multiple input and output, which can greatly shorten the development time of the prototype.
Application scenario: LDMUI-001 61320946C can be used in power, electrical, mechanical, chemical, construction and other industries, suitable for some high-power, more front-end power control fields, such as SCR IF power supply and other IF industrial equipment, such as if electric furnace, if quenching machine, if forging, etc.
In addition, the LDMUI-001 comes with or without reverse blocking. The reverse blocking capability increases the forward voltage drop because a long, low-doping P1 region is required. An IGCT that can block the reverse voltage is called a symmetric IGCT, and an IGCT that cannot block the reverse voltage is called an asymmetric IGCT.

Basic principle
Voltage conversion: LDMUI-001 61320946C This module most likely uses a principle similar to DC-DC conversion. If the input is a DC voltage, it may have an oscillator and chopper module inside it, which cuts the input voltage into a pulse signal by controlling the switching tube on and off. For example, the input voltage is allowed to pass for one time period and not allowed to pass for another time period, and then the pulse signal is converted into a stable DC output voltage by filtering through components such as capacitors at the output end. By controlling the duty cycle of the chopper, the output voltage can be changed to meet the voltage requirements of different loads.
Voltage regulator: LDMUI-001 61320946C It should have a feedback circuit inside to achieve the voltage regulator function. The feedback circuit will monitor the change of the output voltage in real time. When the output voltage fluctuates, the feedback circuit will transmit the change signal to the control circuit, and the control circuit will adjust the on-time or duty cycle of the switching tube according to the feedback signal, so as to keep the output voltage stable.