MP1924―100V, 4A HIGH FREQUENCY HALF-BRIDGE GATE DRIVER
REFERENCE DESIGN CIRCUITS
Half Bridge Converter
The MP1924 drives the MOSFETS with
alternating signals (with dead time) in half-bridge
converter topology. Therefore, from the PWM
controller drives INH and INL with alternating
signals the input voltage can go up to 100V.
Input Voltage
Up to 100V
INH
INL
SW
DRVH
BST
INH
INL
Secondary
Circuit
VSS
DRVL
VDD
DRVL
DRVL
VDD
9V - 16V
Figure 4: Half Bridge Converter
Two-Switch Forward Converter
In two-switch forward converter topology, both
MOSFETs are turned on and off simultaneously.
The input signal (INH and INL) comes from a
PWM controller that senses the output voltage
(and output current during current-mode control).
The Schottky diodes clamp the reverse swing of
the power transformer and must be rated for the
input voltage. The input voltage can go up to
100V.
Input Voltage
Up to 100V
INH
INL
INH
SW
DRVH
BST
INL
VSS
DRVL
Secondary
Circuit
VDD
VDD
9V - 16V
DRVL
DRVL
Figure 5: Two-Switch Forward Converter
MP1924 Rev. 1.0
1/14/2015
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