HR1000AGS-Z

The HR1000A is a controller designed specifically
for the resonant half-bridge topology. It provides
two drive-signal channels that output
complementary signals at a 50% duty cycle. An
internal fixed dead-time of 350ns between the
two complementary gate signals guarantees
zero-voltage switching during the transient and
enables high-frequency operation.
The integrated bootstrap diode simplifies the
external driving circuit for the high-side switch. It
can withstand up to 600V with immunity against
high dV/dt noise.
Modulating the switching frequency regulates the
topology output voltage. A programmable
oscillator can set both the maximum and
minimum switching frequencies.
The IC starts up at the programmed maximum
switching frequency and gradually slows until the
control loop takes over to prevent excessive
inrush current
The IC can be forced to enter a controlled burstmode operation at light-load to minimize the
power consumption and tighten output regulation.
Protections features—including latched shutdown,
auto-recovery, brown-out protection, and overtemperature protection—improve converter
design safety without engendering additional
circuit complexity.
The IC provide 1.5A/2A source/sink capability for
both high-side and low-side gate drivers.
The HR1000A is available in a SO-16 package.