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PDF BH0170A Data sheet ( Hoja de datos )
| Número de pieza | BH0170A | |
| Descripción | FSBH0170A | |
| Fabricantes | Fairchild Semiconductor | |
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April 2011
FSBH0F70A _F116, FSBH0170_F116,
FSBH0270_F116, FSBH0370_F116
Green Mode Fairchild Power Switch (FPS™)
Features
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
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 highl y i ntegrated F SBH-series c onsists of an
integrated curr ent-mode Puls e W idth Mod ulator (PW M)
and an av alanche-rugged 700V S enseFET. It is
specifically designed for high-p erformance offlin e
Switched-Mode Po wer Su pplies (SMPS) with minimal
external components.
The integrate d PW M controller featur es includ e a
proprietary green-mode function that provi des off-time
modulation to line arly decrease the s witching frequency
at lig ht-load conditions t o minimiz e sta ndby power
consumption. To avoid aco ustic-noise pr oblems, the
minimum PW M frequenc y i s set above 18kHz. T his
green-mode function e nables the po wer supply to me et
international power conser vation re quirements. The
PWM controller is manufac tured usin g the BiCMOS
process to fu rther red uce power cons umption. T he
FSBH-series turns off some internal circuits to improve
power saving when VFB is lower than 1.6V, which allows
an operating current of only 2.5mA.
The F SBH-series h as bu ilt-in s ynchronized sl ope
compensation to achieve stable p eak-current-mode
control. T he proprietary external li ne co mpensation
ensures co nstant out put p ower lim it over a wide A C
input voltage range, from 90VAC to 264VAC.
The FSBH-series provides many protection functions. In
addition to c ycle-by-cycle cu rrent limitin g, the internal
open-loop pr otection circu it ensur es safety when a n
open-loop or output short occurs. PWM output is
disabled unti l VDD dro ps be low the V TH-OLP, then the
controller starts up agai n. As long as V DD exceeds 28V,
the internal OVP circuit is triggered.
Compared with a discrete MOSF ET and controller or
RCC s witching conv erter s olution, the F SBH-series
reduces comp onent count, design size, and weight;
while incre asing efficienc y, productivit y, and s ystem
reliability. These devices provide a basic platform that is
well s uited for the desi gn of cost-effective fl yback
converters, such as in PC auxiliary power supplies.
© 2010 Fairchild Semiconductor Corporation
FSBH0F70A_F116, FSBH0170/0270/0370_F116 • Rev. 1.0.1
1
www.fairchildsemi.com
http://www.Datasheet4U.com
1 page  
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
Parameter
Min. Max. Unit
VDRAIN Drain Pin Voltage(5,6)
FSBH0x70/A_F116
700 V
FSBH0F70A_F116
1.5
IDM Drain Current Pulsed(7)
FSBH0170_F116
FSBH0270_F116
4.0
A
8.0
FSBH0370_F116
12.0
FSBH0F70A_F116
10
EAS Single Pulsed Avalanche Energy(8)
FSBH0170_F116
FSBH0270_F116
50
mJ
140
FSBH0370_F116
230
VDD DC Supply Voltage
VFB FB Pin Input Voltage
30
-0.3 7.0
V
V
VIN VIN Pin Input Voltage
VHV HV Pin Input Voltage
-0.3 7.0
700
V
V
PD Power Dissipation (TA＜50°C)
1.5 W
ΘJA Junction-to-Air Thermal Resistance
ψJT Junction-to-Top Thermal Resistance(9)
TJ Operating Junction Temperature
80
20
Internally limited(10)
C/W
C/W
C
TSTG Storage Temperature Range
-55 +150 C
TL Lead Temperature (Wave Soldering or IR, 10 Seconds)
+260
C
FSBH0F70A_F116
5.0
Human Body Model
(All Pins Except HV pin): JESD22-A114
FSBH0170_F116
FSBH0270_F116
5.0
5.0
ESD
FSBH0370_F116
FSBH0F70A_F116
5.0
2.0
kV
Charged Device Model
(All Pins Except HV pin): JESD22-C101
FSBH0170_F116
FSBH0270_F116
2.0
2.0
FSBH0370_F116
1.5
Notes:
5. All voltage values, except differential voltages, are given with respect to the network ground terminal.
6. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.
7. Non-repetitive rating: pulse width is limited by maximum junction temperature.
8. L = 51mH, starting TJ = 25C.
9. Measured on the package top surface.
10. Internally Limited of TJ refers to TOTP
Recommended Operating Conditions
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
Parameter
TA Operating Ambient Temperature
Min.
-40
Max.
+105
Unit
°C
© 2010 Fairchild Semiconductor Corporation
FSBH0F70A_F116, FSBH0170/0270/0370_F116 • Rev. 1.0.1
5
www.fairchildsemi.com
5 Page 
Typical Characteristics
2.20
2.15
2.10
2.05
2.00
1.95
1.90
1.85
1.80
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature(°C)
Figure 22. VFB-G vs. Temperature
2.56
2.54
2.52
2.50
2.48
2.46
2.44
2.42
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature(°C)
Figure 24. IDD-ZDC vs. Temperature
1.800
1.700
1.600
1.500
1.400
1.300
1.200
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature(°C)
Figure 23. VFB-ZDC vs. Temperature
55.0
54.5
54.0
53.5
53.0
52.5
52.0
51.5
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature(°C)
Figure 25. tD-OLP vs. Temperature
© 2010 Fairchild Semiconductor Corporation
FSBH0F70A_F116, FSBH0170/0270/0370_F116 • Rev. 1.0.1
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet BH0170A.PDF ] | |
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