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Features
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 designed for high-performance offline
Switch Mode Power Supplies (SMPS) with minimal
external components.
Brownout Protection with Hysteresis
Built-In 5ms Soft-Start Function
Internal Avalanche-Rugged 700V SenseFET
No 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 PullLOW Auto-Recovery Protection
Applications
General-purpose switch-mode power supplies and
flyback power converters, including:
Auxiliary Power Supply for PC and Server
Adapter for Camcorder
SMPS for VCR, SVR, STB, DVD & DVCD Player,
Printer, Facsimile, and Scanner
© 2009 Fairchild Semiconductor Corporation
FSBH0270 • Rev. 2, Feb-2020
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 VFB is lower than 1.6V, which allows
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 90VAC to 264VAC.
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 28V,
the internal OVP circuit is triggered.
Compared with a discrete MOSFET and controller or
RCC switching converter solution, the FSBH-series
reduces total 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 costeffective flyback converters, such as in PC auxiliary
power supplies.
www.fairchildsemi.com
FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 — Green Mode Fairchild Power Switch (FPS™)
FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370
Green Mode Fairchild Power Switch (FPS™)
Sense FET
Operating
Temperature Range
FSBH0F70ANY
0.5A 700V
-40°C to +105°C
FSBH0170ANY
1.0A 700V
-40°C to +105°C
Part Number
FSBH0270ANY
2.0A 700V
-40°C to +105°C
FSBH0170NY
1.0A 700V
-40°C to +105°C
FSBH0270NY
2.0A 700V
-40°C to +105°C
FSBH0370NY
3.0A 700V
-40°C to +105°C
VIN Pin
(PIN #4)
Packing
Method
Package
Not Available
8-Pin Dual In-Line
Package (DIP)
Tube
Enabled
Application Diagram
HV
Drain
VIN
FB
VDD
GND
Figure 1. Typical Flyback Application
Output Power Table (1)
(2)
230VAC ± 15%
Product
(3)
Adapter
85-265VAC
(4)
Open Frame
(3)
Adapter
6W
(4)
Open Frame
FSBH0F70A
7W
10W
8W
FSBH0170/A
10W
15W
9W
13W
FSBH0270/A
14W
20W
11W
16W
FSBH0370
17.5W
25W
13W
19W
Notes:
1. The maximum output power can be limited by junction temperature.
2. 230 VAC or 100/115 VAC with doublers.
3. 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.
© 2009 Fairchild Semiconductor Corporation
FSBH0270 • Rev. 2, Feb-2020
www.fairchildsemi.com
2
FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 — Green Mode Fairchild Power Switch (FPS™)
Ordering Information
FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 Green — Mode Fairchild Power Switch (FPS™)
Internal Block Diagrams
Figure 2.
FSBH0170, FSBH0270, FSBH0370 Internal Block Diagram
Figure 3. FSBH0F70A, FSBH0170A, FSBH0270A Internal Block Diagram
© 2009 Fairchild Semiconductor Corporation
FSBH0270 • Rev. 2, Feb-2020
www.fairchildsemi.com
3
8
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
8
ZXYTT
BH0F70A
TPM
ZXYTT
BH0170A
TPM
1
1
8
8
ZXYTT
BH0270A
TPM
ZXYTT
BH0170
TPM
1
1
8
8
ZXYTT
BH0270
TPM
ZXYTT
BH0370
TPM
1
1
Figure 4. Pin Configuration and Top Mark Information
Pin Definitions
Pin #
Name
1
GND
Ground. SenseFET source terminal on primary side and internal controller ground.
2
VDD
Power Supply. The internal protection circuit disables PWM output as long as VDD exceeds the
OVP trigger point.
3
FB
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.
VIN
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.
NC
No Connection for FSBH0F70A, FSBH0170A and FSBH0270A.
5
HV
Startup. For startup, this pin is pulled HIGH to the line input or bulk capacitor via resistors.
6
Drain
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.
4
Description
© 2009 Fairchild Semiconductor Corporation
FSBH0270 • Rev. 2, Feb-2020
www.fairchildsemi.com
4
FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 — Green Mode Fairchild Power Switch (FPS™)
Pin Configuration
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
VDRAIN
IDM
Parameter
Drain Pin Voltage
Min.
(5,6)
Drain Current Pulsed
FSBH0x70/A
(7)
(8)
Max.
Unit
700
V
FSBH0F70A
1.5
FSBH0170/A
4.0
FSBH0270/A
8.0
FSBH0370
12.0
FSBH0F70A
10
FSBH0170/A
50
FSBH0270/A
140
FSBH0370
230
EAS
Single Pulsed Avalanche Energy
VDD
DC Supply Voltage
VFB
FB Pin Input Voltage
-0.3
-0.3
A
mJ
30
V
7.0
V
VIN
VIN Pin Input Voltage
7.0
V
VHV
HV Pin Input Voltage
700
V
PD
Power Dissipation (TA＜50°C)
1.5
W
θJA
Junction-to-Air Thermal Resistance
80
°C/W
θJC
Junction-to-Case Thermal Resistance
20
°C/W
TJ
TSTG
TL
ESD
(9)
°C
+150
°C
+260
°C
Operating Junction Temperature
Internally limited
Storage Temperature Range
-55
Lead Temperature (Wave Soldering or IR, 10 Seconds)
Electrostatic Discharge Capability,
All pins except HV pin
Human Body Model:
JESD22-A114
3
Charged Device Model:
JESD22-C101
1
kV
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 = 25°C.
9. 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
TA
Parameter
Conditions
Operating Ambient Temperature
© 2009 Fairchild Semiconductor Corporation
FSBH0270 • Rev. 2, Feb-2020
Min.
-40
Typ.
Max.
Unit
+105
°C
www.fairchildsemi.com
5
FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 — Green Mode Fairchild Power Switch (FPS™)
Absolute Maximum Ratings
VDD=15V and TA=25°C unless otherwise specified.
Symbol
Parameter
SenseFET Section
Condition
Min.
VDS = 700V, VGS = 0V
700
BVDSS
Drain-Source
Breakdown Voltage
IDSS
Zero-Gate-Voltage
Drain Current
FSBH0x70/A
CISS
COSS
FSBH0x70/A
VDS = 560V, VGS = 0V,
TC = 125°C
200
Drain-Source On(11)
State Resistance
Input Capacitance
Output Capacitance
Reverse Transfer
Capacitance
Turn-On Delay Time
19.00
8.80
11.00
6.00
7.20
FSBH0370
4.00
4.75
FSBH0F70A
162
211
250
325
550
715
FSBH0370
315
410
FSBH0F70A
18
24
25
33
38
50
47
61
FSBH0170/A
FSBH0270/A
FSBH0170/A
FSBH0270/A
FSBH0170/A
FSBH0270/A
VGS = 10V, ID = 0.5A
VGS = 0V, VDS = 25V,
f = 1MHz
VGS = 0V, VDS = 25V,
f = 1MHz
FSBH0F70A
3.8
5.7
FSBH0170/A
10.0
15.0
17.0
26.0
9.0
24.0
FSBH0270/A
VGS = 0V, VDS = 25V,
f = 1MHz
FSBH0F70A
9.5
29.0
FSBH0170/A
12.0
34.0
20.0
50.0
11.2
33.0
19
48
4
18
15
40
34
78
33.0
76.0
FSBH0270/A
VDS = 350V, ID = 1.0A
FSBH0370
FSBH0F70A
tR
Rise Time
FSBH0170/A
FSBH0270/A
VDS = 350V, ID = 1.0A
FSBH0370
FSBH0F70A
tD(OFF)
Turn-Off Delay Time
FSBH0170/A
FSBH0270/A
VDS = 350V, ID = 1.0A
FSBH0370
tF
Fall Time
μA
14.00
FSBH0370
tD(ON)
Unit
V
50
FSBH0370
CRSS
Max.
VDS = 700V, VGS = 0V
FSBH0F70A
RDS(ON)
Typ.
(10)
30.0
70.0
55.0
120.0
28.2
67.0
FSBH0F70A
42
94
FSBH0170/A
10
30
25
60
32
74
FSBH0270/A
VDS = 350V, ID = 1.0A
FSBH0370
Ω
pF
pF
pF
ns
ns
ns
ns
Continued on the following page…
© 2009 Fairchild Semiconductor Corporation
FSBH0270 • Rev. 2, Feb-2020
www.fairchildsemi.com
6
FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 — Green Mode Fairchild Power Switch (FPS™)
Electrical Characteristics
VDD=15V and TA=25°C unless otherwise specified.
Symbol
Parameter
Condition
Min.
Typ.
Max.
Unit
Control Section
VDD Section
VDD-ON
Start Threshold Voltage
11
12
13
V
VDD-OFF
Minimum Operating Voltage
7
8
9
V
IDD-ST
Startup Current
FSBH0170
FSBH0270
FSBH0370
VDD-ON – 0.16V
FSBH0F70A
FSBH0170A
FSBH0270A
VDD-ON – 0.16V
240
320
400
30
µA
IDD-OP
Operating Supply Current
VDD = 15V, VFB = 3V
3.0
3.5
4.0
mA
IDD-ZDC
Operating Current for VFB
