Fairchild FSBH0F70A, FSBH0170, FSBH0170A, FSBH0270, FSBH0270A service manual

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April 2010

FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 Green Mode Fairchild Power Switch (FPS™)

FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 — Green Mode Fairchild Power Switch (FPS™)

Features

 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  V  V

Under-Voltage Lockout (UVLO)

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 switch-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 700V SenseFET. It is specifically designed for high-performance offline Switch 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 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.

is lower than 1.6V, which allows

to 264VAC.

drops below the V

TH-OLP

, then the

exceeds 28V,

Ordering Information

FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 — Green Mode Fairchild Power Switch (FPS™)

Part Number Sense FET

Operating

Temperature Range

FSBH0F70ANY 0.5A 700V -40°C to +105°C

FSBH0170ANY 1.0A 700V -40°C to +105°C

FSBH0270ANY 2.0A 700V -40°C to +105°C

FSBH0170NY 1.0A 700V -40°C to +105°C

FSBH0370NY 3.0A 700V -40°C to +105°C

Application Diagram

Drain

VIN

GNDVDDFB

VIN Pin

(PIN #4)

Not Available

Enabled FSBH0270NY 2.0A 700V -40°C to +105°C

Package

8-Pin Dual In-Line Package (DIP)

Packing

Method

Tube

Figure 1. Typical Flyback Application

Output Power Table

Product

FSBH0F70A 7W 10W 6W 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 V

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.

or 100/115 V

(1)

Adapter

with doublers.

230V

± 15%

(3)

Open Frame

(2)

85-265VAC

(4)

Adapter

(3)

Open Frame

(4)

Internal Block Diagrams

FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 Green — Mode Fairchild Power Switch (FPS™)

Figure 2. FSBH0170, FSBH0270, FSBH0370 Internal Block Diagram

Figure 3. FSBH0F70A, FSBH0170A, FSBH0270A Internal Block Diagram

Pin Configuration

FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 — Green Mode Fairchild Power Switch (FPS™)

ZXYTT

BH0F70A

TPM

ZXYTT

BH0270A

TPM

ZXYTT

BH0270

TPM

ZXYTT

BH0170A

TPM

ZXYTT

BH0170

TPM

ZXYTT

BH0370

TPM

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 # Name Description

1 GND

2 VDD

3 FB

5 HV

6 Drain

7 Drain

8 Drain

VIN

NC No Connection for FSBH0F70A, FSBH0170A and FSBH0270A.

Ground. SenseFET source terminal on primary side and internal controller ground. Power Supply. The internal protection circuit disables PWM output as long as V

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.

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.

exceeds the

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

Drain Pin Voltage

DRAIN

IDM Drain Current Pulsed

EAS Single Pulsed Avalanche Energy

VDD DC Supply Voltage 30 V

VFB FB Pin Input Voltage -0.3 7.0 V

VIN VIN Pin Input Voltage -0.3 7.0 V

VHV HV Pin Input Voltage 700 V

Power Dissipation (T

θJA Junction-to-Air Thermal Resistance 80

θJC Junction-to-Case Thermal Resistance 20

TJ Operating Junction Temperature Internally limited

Storage Temperature Range -55 +150

STG

TL Lead Temperature (Wave Soldering or IR, 10 Seconds) +260

ESD

Electrostatic Discharge Capability, All pins except HV pin

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 T

9. Internally Limited of T

(5,6)

FSBH0x70/A 700 V

FSBH0F70A 1.5

(7)

FSBH0170/A 4.0

FSBH0270/A 8.0

FSBH0370 12.0

FSBH0F70A 10

(8)

FSBH0170/A 50

FSBH0270/A 140

FSBH0370 230

＜50°C) 1.5 W

°C/W

(9)

°C

= 25°C.

refers to T

OTP

Human Body Model: JESD22-A114

Charged Device Model: JESD22-C101

FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 — Green Mode Fairchild Power Switch (FPS™)

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 Conditions Min. Typ. Max. Unit

TA Operating Ambient Temperature -40 +105 °C

+ 11 hidden pages

Fairchild FSBH0F70A, FSBH0170, FSBH0170A, FSBH0270, FSBH0270A service manual

Specifications and Main Features

Frequently Asked Questions

User Manual