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Document overview
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Technical content
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 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 Switched-Mode Power Supplie s (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 acou stic-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 in ternal 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 pow er 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 cu rrent 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 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 www.fairchildsemi.com FSBH0F70A_F116, FSBH0170/0270/0370_F116 • Rev. 1.0.1 2 FSBH0F70A_F116, FSBH0170/0270/0370_F116 — Green Mode Fairchild Power Switch (FPS™)
Ordering Information
Part Number SenseFET VIN Pin (PIN #4) Operating Temperature Range Package Packing Method FSBH0F70ANY_F116 0.5A 700V Not Available -40°C to +105°C 8-Pin, Dual In-Line Package (DIP) Tube FSBH0170NY_F116 1.0A 700V Enabled FSBH0270NY_F116 2.0A 700V FSBH0370NY_F116 3.0A 700V Typical Application Diagram Figure 1. Typical Flyback Application
- The maximum output power can be li mited by junction temperature.
- 230 V AC or 100/115 VAC with doublers.
- Typical continuous power in a non-v entilated enclosed adapter with sufficient drain pattern as a heat sink at 50C
- Maximum practical continuous power in an open-frame des ign with sufficient drain pattern as a heat sink at 50C
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. 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.
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FSBH0F70A_F116, FSBH0170/0270/0370_F116 • Rev. 1.0.1 5 FSBH0F70A_F116, FSBH0170/0270/0370_F116 — Green Mode Fairchild Power Switch (FPS™) Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may dam age the device. The device may not function or be operable above the recommended operating conditions and stressi ng 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 IDM Drain Current Pulsed (7) FSBH0F70A_F116 1.5 A FSBH0170_F116 4.0 FSBH0270_F116 8.0 FSBH0370_F116 12.0 EAS Single Pulsed Avalanche Energy (8) FSBH0F70A_F116 10 mJ FSBH0170_F116 50 FSBH0270_F116 140 FSBH0370_F116 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 ψJT Junction-to-Top Thermal Resistance (9) 20 C/W TJ Operating Junction Temper ature Internally limited (10) C TSTG Storage Temperature Range -55 +150 C TL Lead Temperature (Wave Soldering or IR, 10 Seconds) +260 C ESD Human Body Model (All Pins Except HV pin): JESD22-A114 FSBH0F70A_F116 5.0 kV FSBH0170_F116 5.0 FSBH0270_F116 5.0 FSBH0370_F116 5.0 Charged Device Model (All Pins Except HV pin): JESD22-C101 FSBH0F70A_F116 2.0 FSBH0170_F116 2.0 FSBH0270_F116 2.0 FSBH0370_F116 1.5 Notes: 5. All voltage values, except differential voltages, ar e 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 = 25C. 9. Measured on the package top surface. 10. 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 specificatio ns. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol Parameter Min. Max. Unit TA Operating Ambient Tem perature -40 +105 °C
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FSBH0F70A_F116, FSBH0170/0270/0370_F116 • Rev. 1.0.1 6 FSBH0F70A_F116, FSBH0170/0270/0370_F116 — Green Mode Fairchild Power Switch (FPS™)
Electrical Characteristics
VDD=15V and TA=25C unless otherwise specified. Symbol Parameter Condition Min. Typ. Max. Unit SenseFET Section BVDSS Drain-Source Breakdown Voltage VDS=700V, VGS=0V 700 V IDSS Zero-Gate-Voltage Drain Current VDS=700V, VGS=0V 50 μA VDS=560V, VGS=0V, TC=125C 200 RDS(ON) Drain-Source On- State Resistance(12) VGS=10V, ID=0.5A FSBH0F70A_F116 14.00 19.00 Ω FSBH0170_F116 8.80 11.00 FSBH0270_F116 6.00 7.20 FSBH0370_F116 4.00 4.75 CISS Input Capacitance VGS=0V, VDS=25V, f=1MHz FSBH0F70A_F116 162 211 pF FSBH0170_F116 250 325 FSBH0270_F116 550 715 FSBH0370_F116 315 410 COSS Output Capacitance VGS=0V, VDS=25V, f=1MHz FSBH0F70A_F116 18 24 pF FSBH0170_F116 25 33 FSBH0270_F116 38 50 FSBH0370_F116 47 61 CRSS Reverse Transfer Capacitance VGS=0V, VDS=25V, f=1MHz FSBH0F70A_F116 3.8 5.7 pF FSBH0170_F116 10.0 15.0 FSBH0270_F116 17.0 26.0 FSBH0370_F116 9.0 24.0 tD(ON) Turn-On Delay V DS=350V, ID=1.0A FSBH0F70A_F116 9.5 29.0 ns FSBH0170_F116 12.0 34.0 FSBH0270_F116 20.0 50.0 FSBH0370_F116 11.2 33.0 tR Rise Time V DS=350V, ID=1.0A FSBH0F70A_F116 19 48 ns FSBH0170_F116 4 18 FSBH0270_F116 15 40 FSBH0370_F116 34 78 tD(OFF) Turn-Off Delay V DS=350V, ID=1.0A FSBH0F70A_F116 33.0 76.0 ns FSBH0170_F116 30.0 70.0 FSBH0270_F116 55.0 120.0 FSBH0370_F116 28.2 67.0 tF Fall Time V DS=350V, ID=1.0A FSBH0F70A_F116 42 94 ns FSBH0170_F116 10 30 FSBH0270_F116 25 60 FSBH0370_F116 32 74 Continued on the following page…
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FSBH0F70A_F116, FSBH0170/0270/0370_F116 • Rev. 1.0.1 7 FSBH0F70A_F116, FSBH0170/0270/0370_F116 — Green Mode Fairchild Power Switch (FPS™) Electrical Characteristics (Continued) VDD=15V and TA=25C 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_F116 VDD-ON – 0.16V 30 µA FSBH0270_F116 FSBH0370_F116 FSBH0F70A_F116 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 V TH-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 V DD 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(11) TA=-25 to 85C 5 % VIN Section VIN-ON PWM Turn-On Threshold Voltage 1.08 1.13 1.18 V VIN-OFF PWM Turn-Off Threshold Voltage 0.50 0.55 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 A ttenuation 1/4.5 1/ 4.0 1/3.5 V/V ZFB Input Impedance 4 7 k Ω VFB-OPEN Output High Voltage FB Pin Open 5.5 V Continued on the following page…
VDD=15V and TA=25C unless otherwise specified.
- These parameters, although guaranteed , are not 100% tested in production.
- Pulse test: pulse width ≤ 300µs, duty ≤ 2%.
- When activated, the output is disabled and the latch is turned off.
- The threshold temperature for enablin g the output again and resetting the latch after over-temperature protection
- These parameters, although guaran teed, are tested in wafer process.
Figure 5. V FB vs. PWM Frequency
Figure 34. OLP Operation 130µs) prevents false trigger by switching noise. 142°C, thermal shutdown is activated.
Figure 35. 8-Pin Dual In-Line Package (DIP) warranty therein, which covers Fairchild products. http://www.fairchildsemi.com/packaging/.
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FSBH0F70A_F116, FSBH0170/0270/0370_F116 • Rev. 1.0.1 16 FSBH0F70A_F116, FSBH0170/0270/0370_F116 — Green Mode Fairchild Power Switch (FPS™)