Overview:
Description
-Press the button, power on; release it, power off
Features
A push button switch is a switch that has a knob that you push to open or close the contacts. In some pushbutton switches, you push the switch once to open the contacts and then push again to close the contacts. In other words, each time you push the switch, the contacts alternate between opened and closed. These types are commonly called latching switches. There are also Non latching push button switches that only maintain the switch contacts when the switch is help in position. Once the switch is let go, the current is broken and the switch turns off. Push switches are usually a simple on-off switch.
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Intelligent Power Module (IPM) is used in the field of power electronics because of its fast switching speed, low loss, low power consumption, multiple protection functions, strong anti-interference ability, no need for anti-static measures, and small size. The more widely used. Take the PM200DSA060 IPM as an example. Introduce IPM application circuit design and application in single-phase inverter.
IPM structure
The IPM consists of a high speed, low power IGWT, a preferred gate level driver and a protection circuit. Among them, the IGBT is a composite of GTR and MOSFET, and the GTR is driven by the MOSFET. Therefore, the IPM has the advantages of high current density of GTR, low saturation voltage, high withstand voltage, high input impedance of MOSFET, high switching frequency and low driving power.
According to the internal power circuit configuration, there are many types of IPM, such as PM200DSA060 type: IPM is D type (internal integration of 2 IGBTs). Its internal functional block diagram is shown in Figure 1, the internal structure is shown in Figure 2. There are drive and protection circuits inside, and the protection functions include control power supply undervoltage lockout protection, overheat protection, overcurrent protection and short circuit protection when any one of the protection functions operates. The IPM will output a fault signal FO. 
The IPM internal circuitry does not include signal isolation circuitry, self-protection and surge absorbing circuitry to prevent interference. In order to ensure that IPM is safe and reliable. You need to design some peripheral circuits yourself.
(Please read the PDF for details)
-Contact resistance:≤5Omohm
-Switch Function: S. P. D. T. with lamp.
-Various shapes and colors: yellow, blue, red, black, green