MT6M15962a
2.1 IGBT and FWD for 3-phase inverter
The IPM has a 3-phase bridge circuit which consists of IGBTs and FWDs as shown in Figure 3-1. The
main circuit is completed when the main DC bus power supply line is connected to the P and N
terminals and the 3-phase output line is connected to the U, V and W terminals. Connect a snubber
circuit to suppress the surge voltage.
2.2 IGBT and FWD for brake
IGBT and FWD for brake circuit are integrated in and the collector terminal of the IGBT is connected
to the output terminal B as shown in Figure 3-1. The regenerative energy during deceleration is
dissipated by the resistor which is connected between terminal P and B. Voltage rise between terminal
P and N can be suppressed by switching the brake IGBT.
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2. Description of functions
3-3
Fig.3-1 Typical application of 3-phase inverter (Example: 7MBP250XDA065-50 with built-in brake)
