DESCRIPTION
The HR1213 is a multi-mode PFC and current
mode LLC combo controller that can be
configured via the UART interface. Powersaving technology helps the device optimize
efficiency across the full operating range.
The PFC controller employs a patented, digital
average current control scheme to achieve
hybrid continuous conduction mode (CCM) and
discontinuous conduction mode (DCM)
operation. Under heavy loads, CCM reduces the
peak MOSFET current so the controller can be
used across a wider load range. Under light
loads, DCM reduces the switching frequency for
better efficiency. Burst mode has configurable,
digital soft switching to improve both light-load
efficiency and audible noise.
Current mode control is implemented in the LLC
stage to achieve good stability and fast
response. Three operation modes are
implemented based on the different load
conditions: steady state, skip, and burst mode.
This allows different load conditions to be
independently optimized for efficiency. At light
loads, digital, frequency-controlled burst mode is
applied to reduce both switching power loss and
audible noise. Adaptive dead-time adjustment
(ADTA) and capacitive mode protection (CMP) is
also applied to guarantee zero-voltage switching
(ZVS) without capacitive mode operation.
The HR1213 has an internal, high-voltage (HV)
current source for start-up, meaning that a
traditional start-up resistor or external circuit is
not required. An external DC source can provide
a supply for VCC.
Protections include thermal shutdown (TSD),
PFC open-loop protection (OLP), over-voltage
protection (OVP), over-current limit (OCL) and
LLC over-current protection (OCP), SO pin
protection, and over-power protection (OPP).
The HR1213 is available in SOIC-20 and
TSSOP-20 packages.

FEATURES
• General System Features:
o High-Voltage Current Source for StartUp
o UART Interface for Configurations
o User-Friendly GUI
o Available in SOIC-20 and TSSOP-20
Packages
• PFC Controller:
o CCM/DCM Multi-Mode PFC Control with
High Efficiency across All Loads
o Operating Frequency Up to 250kHz
o High PF due to Input Capacitor Current
Compensation
o Configurable Frequency Jittering
o Configurable Soft Start and Burst On
o Configurable AC Input Brown-In/Out
o Cycle-by-Cycle Current Limiting
o OLP, OVP
• LLC Controller:
o 600V HS Gate Driver with Bootstrap
Diode and High dV/dt Immunity
o Current Mode Control
o Up to 500kHz in Steady State
o Adaptive Dead-Time Adjustment with
Minimum and Maximum Limit
o Burst/Skip Mode Switching under Light
Loads
o Configurable Burst Frequency with Low
Audible Noise
o Configurable Soft Start
o Configurable DC Input Brown-In/Out
o Capacitive Mode Protection
o OCP and OPP with Auto-Restart or
Latch-Off Mode
o Configurable Protections on the SO Pin

APPLICATIONS
• Desktop PCs and ATX Power Supplies
• All-in-One and Gaming Power Supplies
• Notebook Adapters
• TV Power Supplies
• Power Tools Power Supplies
• LED Drivers