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| 型号： | FAN7631SJX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 1/19页 |
| 文件大小： | 0K |
| 描述： | IC CTLR PFM RESON CONV 16-SOIC |
| 标准包装： | 2,000 |
| 应用： | 谐振转换器控制器 |
| 电源电压： | 11.1 V ~ 21 V |
| 电流 - 电源： | 10mA |
| 工作温度： | -40°C ~ 130°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOP |
| 包装： | 带卷 (TR) |
April 2012
FAN7631
Advanced Pulse Frequency Modulation (PFM)
Controller for Half-Bridge Resonant Converters
Features
Description
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Variable Frequency Control with 50% Duty Cycle
for Half-Bridge Resonant Converter Topologies
High Efficiency with Zero-Voltage-Switching (ZVS)
Up to 600kHz Operating Frequency
Built-in High-Side Gate Driver
High Gate-Driving Current: +500mA/-1000mA
Programmable Dead Time with a Resistor
Pulse Skipping and Burst Operation for Frequency
Limit (Programmable) at Light-Load Condition
Simple Remote On/Off Control with Latch or
Auto-Restart (A/R) Using FI or LS Pin
Protection Functions: Over-Voltage Protection
(OVP), Overload Protection (OLP), Over-Current
Protection (OCP), Abnormal Over-Current Protection
(AOCP), Internal Thermal Shutdown (TSD), and
High Precise Line Under-Voltage Lockout (LUVLO)
Level-Change OCP Function During Startup
The FAN7631 is a pulse-frequency modulation controller
for high-efficiency half-bridge resonant converters that
includes a high-side gate drive circuit, an accurate
current-controlled oscillator, and various protection
functions. The FAN7631 features include variable dead
time, operating frequency up to 600kHz, protections such
as LUVLO, and a selectable latch or A/R protection using
the LS pin for user convenience.
The Zero-Voltage-Switching (ZVS) technique reduces the
switching losses and improves the efficiency significantly.
ZVS also reduces the switching noise noticeably, which
allows a small Electromagnetic Interference (EMI) filter.
Offering everything necessary to build a reliable and
robust resonant converter, the FAN7631 simplifies
designs and improves productivity and performance. The
FAN7631 can be applied to resonant converter
topologies such as series resonant, parallel resonant,
and LLC resonant converters.
Related Resources
Applications
AN4151 — Half-Bridge LLC Resonant Converter Design
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PDP and LCD TVs
Desktop PCs and Servers
Video Game Consoles
Adapters
Telecom Power Supplies
Using FSFR-Series Fairchild Power Switch (FPS?)
Ordering Information
Part Number
FAN7631SJ
FAN7631SJX
Operating Junction
Temperature
-40 ? C ~ 130 ? C
Package
16-Lead, Small-Outline Package (SOP)
Packaging
Method
Tube
Tape & Reel
? 2011 Fairchild Semiconductor Corporation
FAN7631 ? 1.0.2
www.fairchildsemi.com
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