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Table 1: L-Series IPM Line-Up and Interface Circuit Selection
Figure 1: L-Series IPMs
Part Num ber
Voltage Curre nt
(V) (A)
Package
Re com m ended
DC to DC Conve rters
Re fe rence
Des ign
PM50(#)L(*)060
50
PM75(#)L(*)060
PM100(#)L(*)060
PM150(#)L(*)060
PM200(#)LA060
PM300(#)LA060
PM450CLA060
PM600CLA060
600
75
100
150
200
300
450
600
A or B
C
D
VLA106-24151 x 4pc.
VLA106-24151 x 3pc.
VLA106-24154 x 1pc.
VLA106-24151 x 6pc.
BP7A
BP6A
Package A
PM25(#)L(*)120
25
PM50(#)L(*)120
50
A or B
VLA106-24151 x 4pc.
PM75(#)L(*)120
PM100(#)LA120
PM150(#)LA120
1200
75
100
150
C
VLA106-24151 x 3pc.
VLA106-24154 x 1pc.
BP7A
Package B
PM200CLA120
200
PM300CLA120
300
D
VLA106-24151 x 6pc.
BP6A
PM450CLA120
450
(*) Package Option: B =Solder pin, A =Screw terminal
(#) Circuit Option: R =Six Pack+Brake, C =Six pack
Example:
PM75 R L B 120 is a 75A, 1200V six pack with brake in a solder pin package
Overview:
A significant advantage provided by the L-Series IPM’s built-
in gate drive and protection circuits is that the entire family outlined
in Table 1 requires only two different interface circuit designs. The
standard interface circuit consists of opto-couplers to transfer control
signals and isolated power supplies to power the IPM’s internal
circuits. The two circuits are similar except that large L-Series IPMs
in package D utilize separate control grounds on the low side to
minimize ground bounce induced noise. As a result these devices
require six isolated power supplies. The Powerex BP6A reference
design is an example of this circuit. The remaining devices in
packages A, B, and C have a common control ground for all three
low side IGBTs. This permits use of a single low side supply so that
only four isolated supplies are required. Interface circuit details for
these devices are available in the Powerex BP7A reference design
application note.
Isolated DC to DC Converters:
In order to simplify the design and layout of the required control
power supplies, Powerex has introduced the VLA106-24151 isolated
DC to DC converter shown in figure 2. The VLA106-24151 operates
from a 24V DC supply and produces an isolated 15V DC output at up to
100mA. A Transformer is used to provide 2500VRMS isolation
between the primary and secondary side. The BP6A board uses six
VLA106-24151 DC to DC converters to supply control power for the L-
Series IPM.
2
Package C
Package D
VLA106-24151
Figure 2: Isolated DC to DC
Converter for IPM Control
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