参数资料
型号: FAN7621SSJ
厂商: Fairchild Semiconductor
文件页数: 1/13页
文件大小: 0K
描述: IC OFF-LINE CTRLR PROG PFM 16SOP
标准包装: 47
输出隔离: 隔离
频率范围: 94kHz ~ 106kHz
功率(瓦特): 1.13W
工作温度: -40°C ~ 130°C
封装/外壳: 16-SOIC(0.209",5.30mm 宽)
供应商设备封装: 16-SOP
包装: 管件
July 2010
FAN7621S
PFM Controller for Half-Bridge Resonant Converters
Features
Variable Frequency Control with 50% Duty Cycle
for Half-bridge Resonant Converter Topology
High Efficiency through Zero Voltage Switching (ZVS)
Fixed Dead Time: 350ns
Up to 300kHz Operating Frequency
Auto-Restart Operation for All Protections with
an External LV CC
Protection Functions: Over-Voltage Protection
(OVP), Over-Current Protection (OCP), Abnormal
Over-Current Protection (AOCP), Internal Thermal
Shutdown (TSD)
Applications
PDP and LCD TVs
Desktop PCs and Servers
Adapters
Telecom Power Supplies
Video Game Consoles
Description
The FAN7621S is a pulse frequency modulation
controller for high-efficiency half-bridge resonant
converters. Offering everything necessary to build a
reliable and robust resonant converter, the FAN7621S
simplifies designs and improves productivity, while
improving performance. The FAN7621S includes a high-
side gate-drive circuit, an accurate current-controlled
oscillator, frequency-limit circuit, soft-start, and built-in
protection functions. The high-side gate-drive circuit has
a common-mode noise cancellation capability, which
guarantees stable operation with excellent noise
immunity. Using the zero-voltage-switching (ZVS)
technique dramatically reduces the switching losses and
significantly improves efficiency. The ZVS also reduces
the switching noise noticeably, which allows a small-
sized Electromagnetic Interference (EMI) filter.
The FAN7621S can be applied to various resonant
converter topologies; such as series resonant, parallel
resonant, and LLC resonant converters.
Related Resources
Using FSFR-Series Fairchild Power Switch (FPS )
AN4151 — Half-Bridge LLC Resonant Converter Design
TM
Ordering Information
Part Number
FAN7621SSJ
FAN7621SSJX
Operating Junction
Temperature
-40 ° C to +130 ° C
Package
16-Lead, Small Outline Package (SOP)
Packaging
Method
Tube
Tape & Reel
? 2009 Fairchild Semiconductor Corporation
FAN7621S ? Rev. 1.0.1
www.fairchildsemi.com
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