MP1925 – 100V, 4A, HIGH-FREQUENCY, HALF-BRIDGE GATE DRIVER

MP1925 Rev. 1.01

MonolithicPower.com

11

7/28/2020

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REFERENCE DESIGN CIRCUITS

Half-Bridge Converter

The

MP1925

drives

the

MOSFETS

via

alternating signals with dead time in half-bridge

converter topology. The input voltage can rise up

to 100V with the alternating signals (INT and INL)

coming from the PWM controller (see Figure 4).

Figure 4: Half-Bridge Converter

Two-Switch Forward Converter

In two-switch forward converter topology, both

MOSFETs turn on and off simultaneously. The

input signals (INH and INL) come 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 rise up to

100V (see Figure 5).

Figure 5: Two-Switch Forward Converter