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參數資料
| 型號： | FAN7621SSJX |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | ROHS COMPLIANT, EIAJ, SOP-16 |
| 文件頁數： | 1/13頁 |
| 文件大小： | 797K |
| 代理商： | FAN7621SSJX |
July 2010
2009 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN7621S Rev. 1.0.1
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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 LVCC
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
AN4151 — Half-Bridge LLC Resonant Converter Design
Using FSFR-Series Fairchild Power Switch (FPS
TM)
Ordering Information
Part Number
Operating Junction
Temperature
Package
Packaging
Method
FAN7621SSJ
-40
°C to +130°C
16-Lead, Small Outline Package (SOP)
Tube
FAN7621SSJX
Tape & Reel
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