FSBH0F70A_10 FAIRCHILD | Alldatasheet
Document overview
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Technical content
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 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 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 manufac tured using the BiCMOS process to further reduce power consumption. The FSBH-series turns off some internal circuits to improve power saving when V FB 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 90V AC 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 V DD drops below the V TH-OLP, then the controller starts up again. As long as V DD 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 cost- effective flyback converters, such as in PC auxiliary power supplies.
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 • Rev. 1.0.3 2 FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 — Green Mode Fairchild Power Switch (FPS™)
Ordering Information
Part Number Sense FET Operating Temperature Range VIN Pin (PIN #4) Package Packing Method FSBH0F70ANY 0.5A 700V -40°C to +105°C Not Available 8-Pin Dual In-Line Package (DIP) Tube 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 Enabled FSBH0270NY 2.0A 700V -40°C to +105°C FSBH0370NY 3.0A 700V -40°C to +105°C Application Diagram HV Drain GNDVDDFB VIN Figure 1. Typical Flyback Application
- The maximum output power can be limited by junction temperature.
- 230 V AC or 100/115 VAC with doublers.
- Typical continuous power in a non-ventilated enclosed adapt er with sufficient drain pattern as a heat sink at
- Maximum practical continuous power in an open-frame desi gn with sufficient drain pattern as a heat sink at
Figure 4. Pin Configuration and Top Mark Information 1 GND Ground. SenseFET source terminal on primary side and internal controller ground. cycle is determined in response to the signal on this pin and the internal current-sense signal. 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.
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 • Rev. 1.0.3 5 FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 — Green Mode Fairchild Power Switch (FPS™) 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 700 V IDM Drain Current Pulsed (7) FSBH0F70A 1.5 A FSBH0170/A 4.0 FSBH0270/A 8.0 FSBH0370 12.0 EAS Single Pulsed Avalanche Energy (8) FSBH0F70A 10 mJ FSBH0170/A 50 FSBH0270/A 140 FSBH0370 230 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 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 Operating Junction Temperature Internally limited (9) °C TSTG Storage Temperature Range -55 +150 °C TL Lead Temperature (Wave Soldering or IR, 10 Seconds) +260 °C ESD Electrostatic Discharge Capability, All pins except HV pin Human Body Model: JESD22-A114 3 kV Charged Device Model: JESD22-C101 1 Notes: 5. All voltage values, except differential voltages, are given with respect to the network ground terminal. 6. Stresses beyond those listed under Absolute Maximu m 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 J = 25°C. 9. Internally Limited of T J refers to TOTP Recommended Operating Conditions The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ens ure 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
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 • Rev. 1.0.3 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 SenseFET Section(10) BVDSS Drain-Source Breakdown Voltage FSBH0x70/A V DS = 700V, VGS = 0V 700 V IDSS Zero-Gate-Voltage Drain Current FSBH0x70/A VDS = 700V, VGS = 0V 50 μA VDS = 560V, VGS = 0V, TC = 125°C 200 RDS(ON) Drain-Source On- State Resistance(11) FSBH0F70A VGS = 10V, ID = 0.5A 14.00 19.00 Ω FSBH0170/A 8.80 11.00 FSBH0270/A 6.00 7.20 FSBH0370 4.00 4.75 CISS Input Capacitance FSBH0F70A VGS = 0V, VDS = 25V, f = 1MHz 162 211 pF FSBH0170/A 250 325 FSBH0270/A 550 715 FSBH0370 315 410 COSS Output Capacitance FSBH0F70A VGS = 0V, VDS = 25V, f = 1MHz 18 24 pF FSBH0170/A 25 33 FSBH0270/A 38 50 FSBH0370 47 61 CRSS Reverse Transfer Capacitance FSBH0F70A VGS = 0V, VDS = 25V, f = 1MHz 3.8 5.7 pF FSBH0170/A 10.0 15.0 FSBH0270/A 17.0 26.0 FSBH0370 9.0 24.0 tD(ON) Turn-On Delay Time FSBH0F70A VDS = 350V, ID = 1.0A 9.5 29.0 ns FSBH0170/A 12.0 34.0 FSBH0270/A 20.0 50.0 FSBH0370 11.2 33.0 tR Rise Time FSBH0F70A VDS = 350V, ID = 1.0A 19 48 ns FSBH0170/A 4 18 FSBH0270/A 15 40 FSBH0370 34 78 tD(OFF) Turn-Off Delay Time FSBH0F70A VDS = 350V, ID = 1.0A 33.0 76.0 ns FSBH0170/A 30.0 70.0 FSBH0270/A 55.0 120.0 FSBH0370 28.2 67.0 tF Fall Time FSBH0F70A VDS = 350V, ID = 1.0A 42 94 ns FSBH0170/A 10 30 FSBH0270/A 25 60 FSBH0370 32 74 Continued on the following page…
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 • Rev. 1.0.3 7 FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 — Green Mode Fairchild Power Switch (FPS™) Electrical Characteristics (Continued) 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 V DD-ON – 0.16V 30 µA FSBH0F70A FSBH0170A FSBH0270A V DD-ON – 0.16V 240 320 400 IDD-OP Operating Supply Current V DD = 15V, VFB = 3V 3.0 3.5 4.0 mA IDD-ZDC Operating Current for V FB<VFB-ZDC V DD = 12V, VFB = 1.6V 1.5 2.5 3.5 mA IDD-OLP Internal Sink Current VTH-OLP+0.1V 30 70 90 µA VTH-OLP I DD-OLP Off Voltage 5 6 7 V VDD-OVP V DD Over-Voltage Protection 27 28 29 V tD-VDD-OVP VDD Over-Voltage Protection Debounce Time 75 130 200 µs HV Section IHV Maximum Current Drawn from HV Pin HV 120VDC, VDD = 0V with 10µF 1.5 3.5 5.0 mA IHV-LC Leakage Current after Startup HV = 700V, VDD = VDD-OFF+1V 1 20 µA Oscillator Section fOSC Frequency in Nominal Mode Center Frequency 94 100 106 kHz fOSC-G Green-Mode Frequency 14 18 22 kHz DMAX Maximum Duty Cycle 85 % fDV Frequency Variation vs. V DD Deviation V DD = 11V to 22V 5 % fDT Frequency Variation vs. Temperature Deviation(10) TA = -25 to 85°C 5 % VIN Section (FSBH0170, FSBH0270, FSBH0370) VIN-ON PWM Turn-On Threshold Voltage 1.08 1.13 1.18 V VIN-OFF PWM Turn-Off Threshold Voltage VIN-ON – 0.48 VIN-ON – 0.54 VIN-ON – 0.60 V tIN-OFF PWM Turn-Off Debounce Time 500 ms VIN-H Pull-HIGH Latch Trigger Level 4.4 4.7 5.0 V tIN-H Pull-HIGH Latch Debounce Time 100 µs VIN-L Pull-LOW Auto-Recovery Trigger Level 0.2 0.3 0.4 V Feedback Input Section AV FB Voltage to Current-Sense Attenuation 1/4.5 1/4.0 1/3.5 V/V ZFB Input Impedance 4 7 k Ω Continued on the following page…
VDD=15V and TA=25°C unless otherwise specified.
- These parameters, although guaranteed, are not 100% tested in production.
- Pulse test: pulse width ≤ 300ìs, duty ≤ 2%.
- When activated, the output is disabled and the latch is turned off.
- The threshold temperature for enabling the output again and resetting the latch after over-temperature
protection has been activated.
- These parameters, although guaranteed, are tested in wafer process.
Figure 5. V
Figure 34. OLP Operation 130µs) prevents false trigger by switching noise. °C, thermal shutdown is activated.
5.08 MAX
0.33 MIN
B) ALL DIMENSIONS ARE IN MILLIMETERS. MOLD FLASH, AND TIE BAR EXTRUSIONS. E) DRAWING FILENAME AND REVSION: MKT-N08FREV2. Figure 35. 8-Pin Dual In-Line Package (DIP) the warranty therein, which covers Fairchild products.
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 • Rev. 1.0.3 16 FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 — Green Mode Fairchild Power Switch (FPS™)