FSBH0F70WA FAIRCHILD [Fairchild Semiconductor], FSBH0F70WA Datasheet

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FSBH0F70WA

Manufacturer Part Number
FSBH0F70WA
Description
Manufacturer
FAIRCHILD [Fairchild Semiconductor]
Datasheet
© 2011 Fairchild Semiconductor Corporation
FSBH0F70WA/0170W/0270W • Rev. 1.0.2
FSBH0F70WA, FSBH0170W, FSBH0270W
Green Mode Fairchild Power Switch (FPS™)
Features
Applications
General-purpose switched-mode power supplies and
flyback power converters, including:
Brownout Protection with Hysteresis
Built-In 5ms Soft-Start Function
Internal Avalanche-Rugged 700V SenseFET
Low Acoustic Noise During Light-Load Operation
High-Voltage Startup
Linearly Decreasing PWM Frequency to 18KHz
Peak-Current-Mode Control
Cycle-by-Cycle Current Limiting
Leading-Edge Blanking (LEB)
Synchronized Slope Compensation
Internal Open-Loop Protection
V
V
Internal Auto-Restart Circuit (OVP, OTP)
Constant Power Limit (Full AC Input Range)
Internal OTP Sensor with Hysteresis
Auxiliary Power Supply for PC and Server
SMPS for VCR, SVR, STB, DVD & DVCD Player,
Printer, Facsimile, and Scanner
Adapter for Camcorder
DD
DD
Under-Voltage Lockout (UVLO)
Over-Voltage Protection (OVP)
Description
The highly integrated FSBH-series consists of an
integrated current-mode Pulse Width Modulator (PWM)
and an avalanche-rugged 700V SenseFET. It is
specifically
Switched-Mode Power Supplies (SMPS) with minimal
external components.
The integrated PWM controller features include a
proprietary green-mode function that provides off-time
modulation to linearly decrease the switching frequency
at light-load conditions to minimize standby power
consumption. To avoid acoustic-noise problems, the
minimum PWM frequency is set above 18kHz. This
green-mode function enables the power supply to meet
international power conservation requirements. The
PWM controller is manufactured using the BiCMOS
process to further reduce power consumption. The
FSBH-series turns off some internal circuits to improve
power saving when V
an operating current of only 2.5mA.
The FSBH-series has built-in synchronized slope
compensation to achieve stable peak-current-mode
control. The proprietary external line compensation
ensures constant output power limit over a wide AC
input voltage range, from 90V
The FSBH-series provides many protection functions. In
addition to cycle-by-cycle current limiting, the internal
open-loop protection circuit ensures safety when an
open-loop or output short occurs. PWM output is
disabled until V
controller starts up again. As long as V
the internal OVP circuit is triggered.
Compared with a discrete MOSFET and controller or
RCC switching converter solution, the FSBH-series
reduces component count, design size, and weight;
while increasing efficiency, productivity, and system
reliability. These devices provide a basic platform that is
well suited for the design of cost-effective flyback
converters, such as in PC auxiliary power supplies.
designed
DD
drops below the V
FB
is lower than 1.6V, which allows
for
AC
high-performance
to 264V
DD
AC
TH-OLP
.
June 2012
exceeds 28V,
www.fairchildsemi.com
, then the
offline

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FSBH0F70WA Summary of contents

Page 1

... SMPS for VCR, SVR, STB, DVD & DVCD Player, Printer, Facsimile, and Scanner  Adapter for Camcorder © 2011 Fairchild Semiconductor Corporation FSBH0F70WA/0170W/0270W • Rev. 1.0.2 Description The highly integrated FSBH-series consists of an integrated current-mode Pulse Width Modulator (PWM) and an avalanche-rugged 700V SenseFET ...

Page 2

... Typical continuous power in a non-ventilated enclosed adapter with sufficient drain pattern as a heat sink at 50°C ambient. 4. Maximum practical continuous power in an open-frame design with sufficient drain pattern as a heat sink at 50°C ambient. © 2011 Fairchild Semiconductor Corporation FSBH0F70WA/0170W/0270W • Rev. 1.0.2 Operating VIN Pin Temperature (PIN #4) Range ...

Page 3

... Debounce V DD-OVP OSC S Q Internal … R BIAS V RESET Pattern Generator V RESET Green Mode Max. V PWM Duty OLP OLP Delay FSBH0F70WA Internal Block Diagram 3 Drain 6,7,8 OVP OLP OTP PWM Soft Driver V PWM Soft-Start Comparator Soft-Start Current-Limit Comparator V Limit 1 PWM Comparator 6V Slope Compensation ...

Page 4

... SenseFET Drain. High-voltage power SenseFET drain connection. 7 Drain SenseFET Drain. High-voltage power SenseFET drain connection. 8 Drain SenseFET Drain. High-voltage power SenseFET drain connection. © 2011 Fairchild Semiconductor Corporation FSBH0F70WA/0170W/0270W • Rev. 1.0.2 – Fairchild Logo F Z – Plant Code X – 1-Digit Year Code Y – ...

Page 5

... The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol T Operating Ambient Temperature A © 2011 Fairchild Semiconductor Corporation FSBH0F70WA/0170W/0270W • Rev. 1.0.2 Parameter FSBH0F70WA FSBH0170W FSBH0270W FSBH0F70WA (7) FSBH0170W ...

Page 6

... Input Capacitance ISS C Output Capacitance OSS Reverse Transfer C RSS Capacitance t Turn-On Delay D(ON) t Rise Time R t Turn-Off Delay D(OFF) t Fall Time F © 2011 Fairchild Semiconductor Corporation FSBH0F70WA/0170W/0270W • Rev. 1.0.2 Condition V =700V =700V =560V, V =0V, T =125° FSBH0F70WA V =10V ...

Page 7

... PWM Turn-Off Threshold Voltage IN-OFF t PWM Turn-Off Debounce Time IN-OFF Feedback Input Section A FB Voltage to Current-Sense Attenuation V Z Input Impedance FB V Output High Voltage FB-OPEN © 2011 Fairchild Semiconductor Corporation FSBH0F70WA/0170W/0270W • Rev. 1.0.2 (Continued) Condition FSBH0170W V – 0.16V DD-ON FSBH0270W FSBH0F70WA V – 0.16V DD-ON V =15V < ...

Page 8

... Period During Soft-Start Time SS Constant Power Limit (FSBH0170W & FSBH0270W) V Threshold Voltage 1 for Current Limit LMT1 V Threshold Voltage 2 for Current Limit LMT2 Constant Power Limit (FSBH0F70WA) V Threshold Voltage for Current Limit LMT Over-Temperature Protection Section (OTP) T Protection Junction Temperature OTP T Restart Junction Temperature ...

Page 9

... V vs. Temperature DD-ON 6.6 6.4 6.2 6.0 5.8 5.6 5.4 5.2 5.0 -40 -25 - Temperature(°C) Figure 10. V vs. Temperature TH-OLP 4.0 3.5 3.0 2.5 2.0 1.5 1.0 -40 -25 - Temperature(°C) Figure 12. I vs. Temperature HV © 2011 Fairchild Semiconductor Corporation FSBH0F70WA/0170W/0270W • Rev. 1.0.2 (Continued) 3.02 3.00 2.98 2.96 2.94 2.92 2.90 2.88 2. 110 125 -40 Figure 7. 8.3 8.2 8.1 8.0 7.9 7.8 7 110 125 -40 -25 Figure 9. 28.42 28.41 28.40 28.39 28.38 28.37 28.36 28. 110 ...

Page 10

... Temperature(°C) Figure 18. I vs. Temperature DD-ZDC 2.20 2.15 2.10 2.05 2.00 1.95 1.90 1.85 1.80 -40 -25 - Temperature(°C) Figure 20. V vs. Temperature FB-G © 2011 Fairchild Semiconductor Corporation FSBH0F70WA/0170W/0270W • Rev. 1.0.2 (Continued) 19.2 19.1 19.0 18.9 18.8 18.7 18.6 - 110 125 Figure 15. 1.17 1.16 1.15 1.14 1.13 1.12 1. 110 125 -40 -25 Figure 17. 2.60 2.55 2.50 2.45 2.40 2.35 2. 110 ...

Page 11

... Figure 25. V Level According to PFC Operation IN Brown-In Function of FSBH0F70WA The VIN pin functions are disabled from FSBH0F70WA which still exist brown-in protection in VDD pin. There is a discharge current internal from V startup. The HV source current must be larger than I to charge the capacitor of V ...

Page 12

... Sensing the converter input voltage through the VIN pin, the high/low line compensation function generates a relative peak-current-limit threshold voltage for constant power control, as shown in Figure 28. © 2011 Fairchild Semiconductor Corporation FSBH0F70WA/0170W/0270W • Rev. 1.0 (2.5V), the FB-N decreases FB Figure 28 ...

Page 13

... Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2011 Fairchild Semiconductor Corporation FSBH0F70WA/0170W/0270W • Rev. 1.0 0.400 10.160 ...

Page 14

... Fairchild Semiconductor Corporation FSBH0F70WA/0170W/0270W • Rev. 1.0.2 14 www.fairchildsemi.com ...

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