ABB SD822 Power Supply Device

ABB SD822 Power Supply Device

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Cables

The Evaluation Driver Boards are dedicated to solderable IGBT modules. It is necessary to connect two separate PWM signals for EconoDUALTM 3 IGBT modules and six separate PWM signals in case of EconoPACKTM + IGBT modules. An individual signal for each IGBT channel is necessary. Parts of the schematic for a single driver are depicted in Figure 6. The signals dedicated to High- and Low-Side need to have the correct dead time. Both Evaluation Driver Boards do not provide dead time generation. For suggested gate resistor values according to Table 5 on page 24, the recommended minimum dead time tTD is 1µs. If larger gate resistors are used please refer to [1]. 

The schematic in Figure 6 shows parts of the driver circuit with positive logic. IN+ is used as signal input whereas IN- is used as enable signal. Therefore a +5 V signal on the IN+ input pin and a GND signal on the IN- input pin is necessary to turning-on the IGBT. To operate the whole circuit with negative logic the capacitors C1 and C2 on the input pins have to be swapped. Otherwise this would cause an additional delay. IN+ will then operate as an enable signal. 

ABB SD822 Technical drawing:

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