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FSBH0F70A 데이터시트 PDF




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기능 Green Mode Fairchild Power Switch
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FSBH0F70A 데이터시트, 핀배열, 회로
June 2013
FSBH0F70A _F116, FSBH0170_F116,
FSBH0270_F116, FSBH0370_F116
Green Mode Fairchild Power Switch (FPS™)
Features
Brownout Protection with Hysteresis
Built-In 5 ms Soft-Start Function
Internal Avalanche-Rugged 700 V SenseFET
Low Acoustic Noise During Light-Load Operation
High-Voltage Startup
Linearly Decreasing PWM Frequency to 18 KHz
Peak-Current-Mode Control
Cycle-by-Cycle Current Limiting
Leading-Edge Blanking (LEB)
Synchronized Slope Compensation
Internal Open-Loop Protection
VDD Under-Voltage Lockout (UVLO)
VDD Over-Voltage Protection (OVP)
Internal Auto-Restart Circuit (OVP, OTP)
Constant Power Limit (Full AC Input Range)
Internal OTP Sensor with Hysteresis
VIN Pin for Pull-HIGH Latch Function and
Pull-LOW Auto-Recovery Protection
Applications
General-purpose switched-mode power supplies and
flyback power converters, including:
Auxiliary Power Supply for PC and Server
SMPS for VCR, SVR, STB, DVD & DVCD Player,
Printer, Facsimile, and Scanner
Adapter for Camcorder
Description
The highly integrated FSBH-series consists of an
integrated current-mode Pulse Width Modulator (PWM)
and an avalanche-rugged 700 V SenseFET. It is
specifically designed for high-performance offline
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 18 kHz. 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 VFB is lower than 1.6 V, which
allows an operating current of only 2.5 mA.
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 90 VAC to 264 VAC.
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 VDD drops below the VTH-OLP, then the
controller starts up again. As long as VDD exceeds 28 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.
© 2010 Fairchild Semiconductor Corporation
FSBH0F70A_F116, FSBH0170/0270/0370_F116 • Rev. 1.0.2
1
www.fairchildsemi.com




FSBH0F70A pdf, 반도체, 판매, 대치품
Pin Configuration
F – Fairchild Logo
Z – Plant Code
X – 1-Digit Year Code
Y – 1-Digit Week Code
TT – 2-Digit Die-Run Code
T – Package Type (N:DIP)
P – Y: Green Package
M – Manufacture Flow Code
Figure 4. Pin Configuration and Top Mark Information
Pin Definitions
Pin #
1
2
3
4
5
6
7
8
Name
GND
VDD
FB
VIN
NC
HV
Drain
Drain
Drain
Description
Ground. SenseFET source terminal on primary side and internal controller ground.
Power Supply. The internal protection circuit disables PWM output as long as VDD exceeds the
OVP trigger point.
Feedback. The signal from the external compensation circuit is fed into this pin. The PWM duty
cycle is determined in response to the signal on this pin and the internal current-sense signal.
Line-Voltage Detection. The line-voltage detection is used for brownout protection with
hysteresis and constant output power limit over universal AC input range. This pin has additional
protections that are pull-HIGH latch and pull-LOW auto recovery, depending on the application.
No Connection. FSBH0F70A_F116
Startup. For startup, this pin is pulled HIGH to the line input or bulk capacitor via resistors.
SenseFET Drain. High-voltage power SenseFET drain connection.
SenseFET Drain. High-voltage power SenseFET drain connection.
SenseFET Drain. High-voltage power SenseFET drain connection.
© 2010 Fairchild Semiconductor Corporation
FSBH0F70A_F116, FSBH0170/0270/0370_F116 • Rev. 1.0.2
4
www.fairchildsemi.com

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FSBH0F70A 전자부품, 판매, 대치품
Electrical Characteristics (Continued)
VDD=15 V and TA=25C unless otherwise specified.
Symbol
Parameter
Condition
Control Section
VDD Section
VDD-ON Start Threshold Voltage
VDD-OFF
Minimum Operating Voltage
FSBH0170_F116
IDD-ST
FSBH0270_F116
Startup Current
FSBH0370_F116
VDD-ON – 0.16 V
IDD-OP
FSBH0F70A_F116
Operating Supply Current
VDD-ON – 0.16 V
VDD=15 V, VFB=3 V
IDD-ZDC
Operating Current for VFB<VFB-ZDC
VDD=12 V,
VFB=1.6 V
IDD-OLP
VTH-OLP
Internal Sink Current
IDD-OLP Off Voltage
VTH-OLP+0.1 V
VDD-OVP
tD-VDD-OVP
VDD Over-Voltage Protection
VDD Over-Voltage Protection Debounce Time
HV Section
IHV
IHV-LC
Maximum Current Drawn from HV Pin
Leakage Current after Startup
HV 120 VDC,
VDD=0 V with 10 µF
HV=700 V,
VDD=VDD-OFF+1 V
Oscillator Section
fOSC
fOSC-G
Frequency in Nominal Mode
Green-Mode Frequency
Center Frequency
DMAX
fDV
Maximum Duty Cycle
Frequency Variation vs. VDD Deviation
VDD=11 V to 22 V
fDT
Frequency Variation vs. Temperature
Deviation(11)
TA=-25 to 85C
VIN Section
VIN-ON PWM Turn-On Threshold Voltage
VIN-OFF
tIN-OFF
PWM Turn-Off Threshold Voltage
PWM Turn-Off Debounce Time
VIN-H
tIN-H
Pull-HIGH Latch Trigger Level
Pull-HIGH Latch Debounce Time
VIN-L
Pull-LOW Auto-Recovery Trigger Level
Feedback Input Section
AV FB Voltage to Current-Sense Attenuation
ZFB Input Impedance
VFB-OPEN Output High Voltage
FB Pin Open
Min. Typ. Max. Unit
11 12 13 V
7 8 9V
30
µA
240 320 400
3.0 3.5 4.0 mA
1.5 2.5 3.5 mA
30 70 90 µA
5 6 7V
27 28 29 V
75 130 200 µs
1.5 3.5 5.0 mA
1 20 µA
94 100 106 kHz
14 18 22 kHz
85 %
5%
5%
1.08 1.13 1.18
0.50 0.55 0.60
500
4.4 4.7 5.0
100
0.2 0.3 0.4
V
V
ms
V
µs
V
1/4.5
4
5.5
1/4.0
1/3.5
7
V/V
k
V
Continued on the following page…
© 2010 Fairchild Semiconductor Corporation
FSBH0F70A_F116, FSBH0170/0270/0370_F116 • Rev. 1.0.2
7
www.fairchildsemi.com

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FSBH0F70A

Green Mode Fairchild Power Switch

Fairchild Semiconductor
Fairchild Semiconductor
FSBH0F70A

Green Mode Fairchild Power Switch

Fairchild Semiconductor
Fairchild Semiconductor

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