SF6562DP [SIFIRST]
High Performance Transition Mode PFC Controller;
| 型号： | SF6562DP |
| 厂家： | 
SIFIRST |
| 描述： | High Performance Transition Mode PFC Controller 功率因数校正 |
| 文件： | 总2页 (文件大小：65K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SF6562
High Performance Transition Mode PFC Controller
FEATURES
GENERAL DESCRIPTION
SF6562 is a transition mode (TM) power factor
correction (PFC) controller for AC-DC switching
mode power supply and lighting applications.
In SF6562, a highly linear analog multiplier with THD
optimizer is integrated to achieve very low THD and
near unity power factor. The zero current detector
(ZCD) ensures TM operation. A restart timer is for
stand alone applications.
◆ Transition Mode (TM) Operation
◆ VCC Over Voltage Protection (OVP)
◆ Soft Start Control
◆ Proprietary Soft Start Control
◆ Proprietary “Frequency Adjusting” for Higher
PF and Low THD
◆ Highly Linear Analog Multiplier with THD
Optimizer
In SF6562, the proprietary “Frequency Adjusting”
can help to improve THD performance, while ensures
audio noise free operation. A VCC Over Voltage
Protection (VCC OVP) is integrated o improve
system reliability. The IC also has prorietary Soft
Start Control to soften the stress on the MOSFET
during power on period.
In SF6562, the threshold for Output Over Voltage
Protection (OVP) and Error Amplifier (EA) are
trimmed to tight range and internally temperature
compensated.
◆ Low Start-up Current and Operating Current
◆ Trimmed 1.4% Internal Voltage Reference
◆ High Precise Output Over Voltage Protection
Threshold with Low Temperature Drift
◆ Under Voltage Lockout with Hysteresis
◆ Restart Timer for Stand-alone Applications
◆ Disable Function
◆ Cycle-by-Cycle Current Limiting
◆ Built-in Leading Edge Blanking (LEB)
◆ Audio Noise Free Operation
◆ 10V to 31V Wide Range of VCC Voltage
◆ 800mA Drive Capability
◆ System Open Loop Protection
SF6562 integrates functions and protections of Under
Voltage Loc(UVLO), VCC Over Voltage
Protection (OVSoft Start Control, Cycle-by-cycle
Current Limiting (OCP), GD Clamping, VCC
Clamping, Leading Edge Blanking (LEB), System
Open Loop Protection (OLP), Output OVP, etc.
In SF6562, all protections are auto-recovery mode
protection.
APPLICATIONS
◆ SMPS
◆ Lighting Application
SF6562 is available in SOP-8 and DIP-8 packages.
TYPICAL APPLICATION
©SiFirst Technology
- 1 -
Confidential
SiFirst_DS_6562_V1.2
SF6562
Pin Configuration
VCC
GD
1
2
3
4
8
7
6
5
INV
COMP
MULT
CS
DIP8/
SOP8
GND
ZCD
Ordering Information
Part Number
SF6562SG
Top Mark
SF6562SG
SF6562SG
SF6562DP
Package
Tape & Reel
SOP8
SOP8
DIP8
Green
Green
RHS
SF6562SGT
SF6562DP
Yes
Marking Information
YWW: Year&Week code
YWW: Year&Week code
©SiFirst Technology
- 2 -
Confidential
SiFirst_DS_6562_V1.2
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