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SQ0765R の電気的特性と機能

SQ0765RのメーカーはFairchild Semiconductorです、この部品の機能は「FSQ0765R」です。


製品の詳細 ( Datasheet PDF )

部品番号 SQ0765R
部品説明 FSQ0765R
メーカ Fairchild Semiconductor
ロゴ Fairchild Semiconductor ロゴ 




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SQ0765R Datasheet, SQ0765R PDF,ピン配置, 機能
June 2008
FSQ0565R, FSQ0765R
Green-Mode Fairchild Power Switch (FPS™) for
Quasi-Resonant Operation - Low EMI and High Efficiency
Features
„ Optimized for Quasi-Resonant Converter (QRC)
www.DataSheet4U.c„omLow EMI through Variable Frequency Control and AVS
(Alternating Valley Switching)
„ High-Efficiency through Minimum Voltage Switching
„ Narrow Frequency Variation Range over Wide Load
and Input Voltage Variation
„ Advanced Burst-Mode Operation for Low Standby
Power Consumption
„ Simple Scheme for Sync Voltage Detection
„ Pulse-by-Pulse Current Limit
„ Various Protection functions: Overload Protection
(OLP), Over-Voltage Protection (OVP), Abnormal
Over-Current Protection (AOCP), Internal Thermal
Shutdown (TSD) with Hysteresis, Output Short
Protection (OSP)
„ Under-Voltage Lockout (UVLO) with Hysteresis
„ Internal Start-up Circuit
„ Internal High-Voltage Sense FET (650V)
„ Built-in Soft-Start (17.5ms)
Applications
„ Power Supply for LCD TV and Monitor, VCR, SVR,
STB, and DVD & DVD Recorder
„ Adapter
Related Resourses
Visit: http://www.fairchildsemi.com/apnotes/ for:
„ AN-4134: Design Guidelines for Offline Forward
Converters Using Fairchild Power Switch (FPS)
„ AN-4137: Design Guidelines for Offline Flyback
Converters Using Fairchild Power Switch (FPS)
„ AN-4140: Transformer Design Consideration for
Offline Flyback Converters Using Fairchild Power
Switch (FPS)
„ AN-4141: Troubleshooting and Design Tips for
Fairchild Power Switch (FPS) Flyback Applications
„ AN-4145: Electromagnetic Compatibility for Power
Converters
„ AN-4147: Design Guidelines for RCD Snubber of
Flyback
„ AN-4148: Audible Noise Reduction Techniques for
Fairchild Power Switch Fairchild Power Switch(FPS™)
Applications
„ AN-4150: Design Guidelines for Flyback Converters
Using FSQ-Series Fairchild Power Switch (FPS)
Description
A Quasi-Resonant Converter (QRC) generally shows
lower EMI and higher power conversion efficiency than a
conventional hard-switched converter with a fixed
switching frequency. The FSQ-series is an integrated
Pulse-Width Modulation (PWM) controller and
SenseFET specifically designed for quasi-resonant
operation and Alternating Valley Switching (AVS). The
PWM controller includes an integrated fixed-frequency
oscillator, Under-Voltage Lockout (UVLO), Leading-
Edge Blanking (LEB), optimized gate driver, internal soft-
start, temperature-compensated precise current sources
for a loop compensation, and self-protection circuitry.
Compared with a discrete MOSFET and PWM controller
solution, the FSQ-series can reduce total cost,
component count, size, and weight; while simultaneously
increasing efficiency, productivity, and system reliability.
This device provides a basic platform for cost-effective
designs of quasi-resonant switching flyback converters.
© 2008 Fairchild Semiconductor Corporation
FSQ0565R, FSQ0765R Rev. 1.0.1
www.fairchildsemi.com

1 Page





SQ0765R pdf, ピン配列
Application Diagram
www.DataSheet4U.com
AC
IN
Sync
PWM
FB VCC
Vstr Drain
GND
VO
FSQ0765R Rev.00
Figure 1. Typical Flyback Application
Internal Block Diagram
Sync
5
AVS
FB
4
0.35/0.55
VCC
Vref
VBurst
Idelay
IFB
3R
tON < tOSP
after SS
R
Soft-
Start
PWM
Vstr VCC Drain
6 31
OSC
Vref
VCC good
8V/12V
LEB
250ns
SQ
RQ
Gate
driver
VOSP
VSD
VOVP
LPF
TSD
LPF
SQ
RQ
AOCP
VOCP
(1.1V)
2
GND
VCC good
Figure 2. Internal Block Diagram
FSQ0765R Rev.00
© 2008 Fairchild Semiconductor Corporation
FSQ0565R, FSQ0765R Rev. 1.0.1
3
www.fairchildsemi.com


3Pages


SQ0765R 電子部品, 半導体
Electrical Characteristics
TA = 25°C unless otherwise specified.
Symbol
Parameter
SENSEFET SECTION
BVDSS
IDSS
RDS(ON)
Drain Source Breakdown Voltage
Zero-Gate-Voltage Drain Current
Drain-Source On-State FSQ0565R
Resistance
FSQ0765R
COSS
www.DataSheet4U.com
td(on)
Output Capacitance
Turn-On Delay Time
FSQ0565R
FSQ0765R
FSQ0565R
FSQ0765R
tr Rise Time
FSQ0565R
FSQ0765R
td(off)
Turn-Off Delay Time
FSQ0565R
FSQ0765R
tf Fall Time
FSQ0565R
FSQ0765R
CONTROL SECTION
tON.MAX
tB
tW
fS
ΔfS
tAVS
VAVS
Maximum On Time
Blanking Time
Detection Time Window
Initial Switching Frequency
Switching Frequency Variation(11)
AVS Triggering
Threshold(9)
On Time
Feedback
Voltage
tSW Switching Time Variance by AVS(11)
IFB Feedback Source Current
DMIN
Minimum Duty Cycle
VSTART
VSTOP
UVLO Threshold Voltage
tS/S Internal Soft-Start Time
BURST-MODE SECTION
VBURH
VBURL
Hysteresis
Burst-Mode Voltages
Condition
VCC = 0V, ID = 100µA
VDS = 560V
TJ = 25°C, ID = 0.5A
TJ = 25°C, ID = 0.5A
VGS = 0V, VDS = 25V, f = 1MHz
VDD = 350V, ID = 25mA
VDD = 350V, ID = 25mA
VDD = 350V, ID = 25mA
VDD = 350V, ID = 25mA
TJ = 25°C
TJ = 25°C, Vsync = 5V
TJ = 25°C, Vsync = 0V
-25°C < TJ < 85°C
at VIN = 240VDC, Lm = 360μH
(AVS triggered when VAVS>spec
& tAVS<spec.)
Sync = 500kHz sine input
VFB = 1.2V, tON = 4.0µs
VFB = 0V
VFB = 0V
After turn-on
With free-running frequency
TJ = 25°C, tPD = 200ns(10)
Min. Typ. Max. Unit
650
300
1.76 2.20
1.3 1.6
78
125
22
22
52
70
95
105
50
65
V
µA
Ω
pF
ns
ns
ns
ns
8.8 10.0 11.2 µs
13.5 15.0 16.5 µs
6.0 µs
59.6 66.7 75.8 kHz
±5 ±10 %
4.0 µs
1.2 V
13.5 20.5 µs
700 900 1100 µA
0%
11 12 13 V
789V
17.5 ms
0.45 0.55 0.65
0.25 0.35 0.45
200
V
V
mV
Continued on the following page...
© 2008 Fairchild Semiconductor Corporation
FSQ0565R, FSQ0765R Rev. 1.0.1
6
www.fairchildsemi.com

6 Page



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部品番号部品説明メーカ
SQ0765R

FSQ0765R

Fairchild Semiconductor
Fairchild Semiconductor


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