HR1001A
Enhanced LLC Controller with
Adaptive Dead-Time Control
The Future of Analog IC Technology
DESCRIPTION
HR1001A is the OCP auto-recovery version of
HR1001B.
FEATURES
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Two-Level
Over-Current
Protection:
Frequency Shift and Auto-Recovery Mode
with Programmable Duration Time
Adaptive Dead-Time Adjustment
Capacitive Mode Protection
50% Duty Cycle, Variable Frequency
Control for Resonant Half-Bridge Converter
600V High-Side Gate Driver with Integrated
Bootstrap Diode with High dv/dt Immunity
High-Accuracy Oscillator
HR1001A is an enhanced LLC controller, which
provides new features of adaptive dead-time
adjustment (ADTA) and capacitive mode
protection (CMP).
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The adaptive dead-time adjustment inserts a
dead time between the two complimentary gate
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outputs automatically.
This is ensured by
keeping the outputs off while sensing the dv/dt
current of the half-bridge switching node. The
ADTA features easier design, lower EMI, and
higher efficiency.
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Operates up to 600kHz
Latched Disable Input for Easy Protection
Remote On/Off Control and Brown-Out
Protection through BO
Programmable Burst Mode Operation at
Light Load
Non-Linear Soft Start for Monotonic Output
Voltage Rise
SOIC-16 Package
HR1001A incorporates anti-capacitive mode
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protection,
which
prevents
potentially
destructive capacitive mode switching if the
output is shorted or has a severe overload.
This feature protects the MOSFET during
abnormal conditions, making the converter
robust.
APPLICATIONS
HR1001A has a programmable oscillator that
sets both the maximum and minimum switching
frequencies. It starts up at a programmed
maximum switching frequency and decays until
the control loop takes over to prevent excessive
inrush current.
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LCD and PDP TVs
Desktop PCs and Servers
Telecom SMPS
AC/DC Adapter, Open-Frame SMPS
Video Game Consoles
Electronic Lighting Ballast
HR1001A enters a controlled burst mode at
light load to minimize the power consumption
and tighten output regulation.
All MPS parts are lead-free, halogen-free, and adhere to the RoS directive.
For MPS green status, please visit the MPS website under Quality
Assurance. “MPS” and “The Future of Analog IC Technology” are registered
trademarks of Monolithic Power Systems, Inc.
HR1001A provides rich protection features,
including two-level OCP, auto—recovery,
external latch shutdown, brown in/out, CMP,
and OTP, improving converter design safety
with minimal extra components.
HR1001A Rev.1.1
3/14/2016
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
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