Broadcom ACPL-336J Reference Manual - Page 7

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ACPL-336J Reference Manual

Fuji Electric Small PIM Module (M728/M732) Evaluation Board

Figure 5: Evaluation Board Main Circuit Diagram

T4, T5, and T6 are the three-phase AC input terminals, R, S, and T. They are connected to the diode bridge circuit, which

will rectify the AC input to DC+/DC- bus voltage. T1, T2, and T3 are the three-phase AC output terminals U, V, and W that

can be connected to a three-phase motor. The DC+, DC-, and brake terminals can be accessed from terminals T7/T9, T10,

and T8, respectively. The thermistor of the PIM can be accessed from NTC connector CN3. The PWM input signals from the

controller board can be connected to the inverter using the 30-pin XG-Series flat cable PCB connector CN2. The fault signals

from the ACPL-336J gate drive optocouplers are fed back to the controller using the same connector CN2.

Six ACPL-336J gate drive optocouplers, IC1 to IC6, are used to drive the six IGBTs of the three-phase inverter, and IC7 is

used to drive the braking IGBT. The evaluation board has an isolated DC/DC power supply MS57140-07, IC8 to provide

power for the gate drive optocouplers. The DC/DC power supply converts DC +20V from connector CN1 to +15V/–6V gate

drive voltage.

The reference design describes the gate drive and isolated power supply designs and testing. Other details, such as the full

schematic, bill of material, and PCB layouts can be found in Fuji Electric website:

http://www.fujielectric.com/products/semiconductor/model/igbt/evaluation/box/doc/pdf/MT5F36187_E.pdf

Broadcom

ACPL-336J-RM100