Table of Contents
Advertisement
ACPL-337J Reference Manual
Fuji Electric PIM Module EP2 Package Evaluation Board
2.3 DC/DC Power Supply Design
Figure 8: Schematic of the DC/DC Power Supply
M57140-07F is an isolated DC-to-DC converter with an input of DC 20V.It supplies four 21.5V outputs. Isolation is provided
from primary to secondary (V
2.5 kV
/min) and also between the secondary (V
1.5 kV
/min). The 21.5V outputs
ISO
RMS
ISO
RMS
are split into +15V and –6V supplies by 15V Zener diodes ZD101 to ZD104. The +15V/–6V supplies are connected to the
seven ACPL-337J to provide bipolar gate drive voltages.
IC2 is a TA7805F voltage regulator to regulate the 20V input to 5V supply for the primary side of the ACPL-337J.
Broadcom
ACPL-337J-EP2-RM100
10
Advertisement
Table of Contents
