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| 型號(hào)： | PLC810PG |
| 廠商： | POWER INTEGRATIONS INC |
| 元件分類： | 穩(wěn)壓器 |
| 中文描述： | SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDIP24 |
| 封裝： | 0.300 INCH, GREEN, PLASTIC, MS-001, DIP-24 |
| 文件頁數(shù)： | 1/26頁 |
| 文件大小： | 1513K |
| 代理商： | PLC810PG |
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PLC810PG
HiperPLC Family
www.powerint.com
August 2009
Continuous Mode PFC & LLC Controller
with Integrated Half-bridge Drivers
Product Highlights
Features
Highly integrated, eliminates external components
Frequency and phase synchronized PFC and LLC
Reduced noise and EMI
Ripple current reduction in PFC output capacitor
Edge collision-avoidance simplifies layout
Comprehensive PFC and LLC fault handling and current limiting
Proprietary continuous conduction mode PFC for high
efficiency with low component cost
High efficiency Zero Voltage Switching (ZVS) LLC
Off-time PFC control eliminates AC input sensing components
Configurable, precise dead time control and frequency limit
Prevents hard MOSFET switching
Tight LLC duty cycle symmetry for balanced O/P diode currents
Lead and halogen free Green package
Applications
32” to 60” LCD TV power supplies
Off-line 150 W to 600 W efficiency-optimized power supplies
LED street lighting
Description
The PLC810PG is a combined PFC and LLC off-line controller
with integrated high voltage half-bridge drivers. Figure 1 shows
a simplified schematic of a PLC810PG based power supply
where the LLC resonant inductor is integrated into the
Figure 1.
Typical Application Circuit – LCD TV Power Supply.
transformer. The PFC section of the PLC810PG is a universal
input continuous current mode (CCM) design that does not
require a sinusoidal input reference, thereby reducing system
cost and external components.
The DC-DC controller drives an LLC resonant topology. This
variable frequency controller provides high efficiency by
switching the power MOSFETs at zero voltage, eliminating most
switching losses. The LLC controller is built around a current
controlled oscillator with a control range selected to support
the traditional frequency of operation found in televisions.
To ensure zero voltage switching, the dead time of the LLC
switching in the PLC810PG is tightly toleranced and can be
adjusted with an external resistor. The highside/lowside duty
cycle is also closely matched to provide balanced output
currents reducing output diode cost.
A typical PLC810PG LLC design operates at 100 kHz (under
nominal conditions). Depending on the LLC circuit design, the
switching frequency can vary from half to three times the nominal
operating frequency as a result of line and load changes.
The PFC converter is frequency locked to the LLC to minimize
noise and electromagnetic interference. Increasing the PFC
frequency in synchronization with the LLC at light loads
reduces the current at which the PFC boost converter
LLC Feedback Circuit
PLC810PG
GATEH
GATEL
HB
AC
IN
DC
OUT
VCC
VCCL
VCCHB
GATEP
ISL
ISP
FBP
VCOMP
GNDP
Link
GND
FMAX
VREF
FBL
GNDL
PI-5044a-121708
PFC Gate
Driver
+
Standby
Supply
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