HR1001B
Enhanced LLC Controller with
Adaptive Dead-Time Control
DESCRIPTION
FEATURES
The HR1001B is an enhanced LLC controller,
which provides new adaptive dead-time
adjustment (ADTA) and capacitive mode
protection (CMP) features.
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
The adaptive dead-time adjustment inserts a
dead time between the two complimentary gate
outputs automatically.
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.
This is ensured by
Operates up to 600kHz
Two-Level
Over-Current
Protection:
Frequency Shift and Latched Shutdown with
Programmable Duration Time
Latched Disable Input for Easy Protection
Remote On/Off Control and Brown-Out
Protection through the BO Pin
Programmable Burst Mode Operation at
Light Load
Non-Linear Soft Start for Monotonic Output
Voltage Rise
SOIC-16 Package
The HR1001B incorporates anti-capacitive
mode 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.
The HR1001B has a programmable oscillator
that sets both the maximum and minimum
switching frequencies.
programmed maximum switching frequency
and decays until the control loop takes over to
prevent excessive inrush current.
APPLICATIONS
It starts up at a
LCD and PDP TVs
Desktop PCs and Servers
Telecom SMPS
AC/DC Adapter, Open-Frame SMPS
Video Game Consoles
Electronic Lighting Ballast
The HR1001B 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 RoHS 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.
The HR1001B provides rich protection features,
including two-level OCP with external latch
shutdown, auto-recovery, brown in/out, CMP,
and OTP, improving converter design safety
with minimal extra components.
HR1001B Rev.1.1
3/15/2018
www.MonolithicPower.com
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