HR1000A
Resonant Half-Bridge Controller
The Future of Analog IC Technology
DESCRIPTION
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 burst-
mode operation at light-load to minimize the
power consumption and tighten output regulation.
Protections features—including latched shutdown,
auto-recovery, brown-out protection, and over-
temperature
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.
FEATURES
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50% Duty Cycle, Variable Frequency
Control For Resonant Half-Bridge Converter
600V High-Side Gate Driver with Integrated
Bootstrap Diode and High dV/dt Immunity
1.5A/2A Source/Sink Capability for Both
High-Side and Low-Side Gate Drivers
High-Accuracy Oscillator
Operates at up to 600kHz
Two-Level
Over-Current
Protection:
Frequency-Shift and Latched Shutdown with
Programmable Duration Time
Remote ON/OFF Control and Brown-Out
Protection through the BO Pin
Latched-Disable Input for Easy Protections
Implementation
Interfaces with PFC Controller
Programmable Burst-Mode Operation at
Light-Load
Non-Linear Soft-Start for Monotonic Output
Voltage Rise
SO-16 package
LCD and PDP TVs
Desktop PCs and Servers
Telecom SMPS
AC-DC Adapter, Open-Frame SMPS
Video Game Consoles
Electronic Lighting Ballast
APPLICATIONS
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance. “MPS” and “The
Future of Analog IC Technology” are Registered Trademarks of Monolithic
Power Systems, Inc.
HR1000A Rev. 1.01
www.MonolithicPower.com
8/30/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
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