HR1201
The Future of Analog IC Technology
High-Performance Digital PFC +
Analog LLC Combo Controller with
Standby Power Input to VCC
FEATURES
General System Features
Meets EuP Lot 6 and COC Version 5 Tier 2
Specifications
Standard I
2
C Interface
1k EEPROM to Store Parameters
User-Friendly GUI for Digital PFC
VCC Supplied by External DC Input from
Additional Isolated Power Source
PFC Controller
Variable Frequency Control for Flat
Efficiency and PF Curve
High PF Due to Patented Input Capacitor
Current Compensation
Programmable Frequency Jittering
Programmable Brown-In and Brown-Out
Programmable Soft Start (SS)
Cycle-by-Cycle Current Limit
Open-Loop Protection
LLC Controller
600V High-Side Gate Driver with Integrated
Bootstrap Diode and High dv/dt Immunity
Adaptive Dead-Time Adjustment of HB LLC
with Minimum and Maximum Limit
Burst Mode Switching
Safe Start-Up in Case of System Fault
Two-Level Over-Current Protection (OCP)
Latch Shutdown Protection
Over-Temperature Protection (OTP)
Capacitive Mode Protection
DESCRIPTION
The HR1201 is a high-performance controller
that integrates an advanced digital PFC
controller and a half-bridge LLC resonant
controller. The HR1201 requires low input
power at no-load or ultra-light load, making it
compliant with the Energy Using Product
Directive (EuP) Lot 6 and Code of Conduct
Version 5 Tier 2 specifications.
The PFC of the HR1201 employs a patented
average current control scheme, which can
operate both in continuous conduction mode
(CCM) and discontinuous conduction mode
(DCM) according to the instantaneous condition
of the input voltage and output load. The IC
exhibits excellent efficiency and a high power
factor (PF) at light load. In CCM, the HR1201
can be used in applications up to 500W with
minimal board size limitations. The performance
of the PFC can be optimized by programming
multiple parameters through an I
2
C GUI.
Programming can be completed either by the
factory or by the customer with a detailed user
guide.
The half-bridge LLC resonant converter
achieves high efficiency with zero-voltage
switching (ZVS). The HR1201 implements an
adaptive dead-time adjustment (ADTA) function
to guarantee ZVS in different load conditions.
Additionally, the HR1201 can prevent the LLC
converter from operating in capacitive mode,
making it more robust and easier to design.
Full protection features include thermal
shutdown, open-loop protection (OLP), over-
current
protection
(OCP),
over-voltage
protection (OVP), and brown-in/-out protection.
The HR1201 is suitable for standby power
applications. The HR1201 is available in a
SOIC-28 package.
APPLICATIONS
Notebook Adapters
All-in-One or Gaming Power Supply
Desktop PC and ATX Power
General AC/DC Power Supply up to 600W
LCD TV and Plasma TV Power Supply
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.
HR1201 Rev 1.0
12/6/2017
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
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