MP1907―100V, 2.5A, HIGH FREQUENCY HALF-BRIDGE GATE DRIVER
Active-Clamp Forward Converter
This topology lends itself well to run at duty
cycles exceeding 50%. For these reasons, the
input voltage may not be able to run at 100V for
this application.
In active-clamp forward converter topology, the
MOSFETs are driven alternately. The high-side
MOSFET, along with capacitor Creset, is used to
reset the power transformer in a lossless manner.
Up to 100V
+
Secondary
Circuit
+
Creset
6
7
5
4
EN
SW
EN
INH
INL
DRVH
BST
NC
INH
INL
8
3
MP1907
9
2
1
VSS
DRVL
10
VDD
DRVL
VDD
9V to 18V
10µF
DRVL
Figure 4—Active-clamp Forward Converter
MP1907 Rev. 1.1
11/20/2013
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