FSBH0270.pdf 데이터시트 (총 16 페이지) - 파일 다운로드 FSBH0270 데이타시트 다운로드

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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

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Ordering Information
Part Number SenseFET
FSBH0F70ANY_F116
FSBH0170NY_F116
FSBH0270NY_F116
FSBH0370NY_F116
0.5 A 700 V
1.0 A 700 V
2.0 A 700 V
3.0 A 700 V
VIN Pin
(PIN #4)
Not Available
Enabled
Operating
Temperature Range
Package
-40°C to +105°C
8-Pin, Dual In-Line
Package (DIP)
Packing
Method
Tube
Typical Application Diagram
HV
Drain
VIN
FB VDD GND
Figure 1. Typical Flyback Application
Output Power Table(1)
Product
230 VAC ± 15%(2)
Adapter(3)
Open Frame(4)
85-265 VAC
Adapter(3)
Open Frame(4)
FSBH0F70A_F116
7W
10 W
6W
8W
FSBH0170_F116
10 W
15 W
9W
13 W
FSBH0270_F116
14 W
20 W
11 W
16 W
FSBH0370_F116
17.5 W
25 W
13 W
19 W
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 50C
ambient.
4. Maximum practical continuous power in an open-frame design with sufficient drain pattern as a heat sink at 50C
ambient.
© 2010 Fairchild Semiconductor Corporation
FSBH0F70A_F116, FSBH0170/0270/0370_F116 • Rev. 1.0.2
2
www.fairchildsemi.com

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Block Diagram
Figure 2. FSBH0170 / 0270 / 0370_F116 Internal Block Diagram
Figure 3. FSBH0F70A_F116 Internal Block Diagram
© 2010 Fairchild Semiconductor Corporation
FSBH0F70A_F116, FSBH0170/0270/0370_F116 • Rev. 1.0.2
3
www.fairchildsemi.com