FSQ0365RN FAIRCHILD | Alldatasheet
Document overview
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Technical content
Features
Optimized for Quasi-Resonant Converter (QRC) Low EMI through Variable Frequency Control and Inherent Frequency Modulation High-Efficiency through Minimum Voltage Switching Narrow Frequency Variation Range over Wide Load and Input Voltage Variation Advanced Burst-Mode Operation for Low Standby Power Consumption Pulse-by-Pulse Current Limit Various Protection Functions: Overload Protection (OLP), Over-Voltage Protection (OVP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD) Under-Voltage Lockout (UVLO) with Hysteresis Internal Start-up Circuit Internal High-Voltage Sense FET (650V) Built-in Soft-Start (15ms)
Applications
Power Supply for DVP Player and DVD Recorder Power supply for Set-Top Box Adapter Auxiliary Power Supply for PC, LCD TV, and PDP TV
Description
A Quasi-Resonant Converter (QRC) generally shows lower EMI and higher power conversion efficiency than a conventional hard-switched converter with a fixed switching frequency. The FSQ-series is an integrated Pulse-Width Modulation (PWM) controller and SenseFET specifically designed for quasi-resonant operation with minimal external components. The PWM controller includes an integrated fixed-frequency oscillator, Under-Voltage Lockout, Leading Edge Blanking (LEB), optimized gate driver, internal soft-start, temperature-compensated pr ecise current sources for loop compensation, and self-protection circuitry. Compared with discrete MOSFET and PWM controller solution, the FSQ-series can reduce total cost, component count, size and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform that is well suited for cost-effective designs of quasi-resonant switching fly- back converters.
Ordering Information
Notes: 1. The junction temperature can limit the maximum output power. 2. 230VAC or 100/115VAC with doubler. The maximum power with CCM operation. 3. Typical continuous power in a non-ventilated enclosed adapter measured at 50°C ambient temperature. 4. Maximum practical continuous power in an open frame design at 50°C ambient. 5. PB-free package per JEDEC J-STD-020B. Product Number(5) PKG. Operating Temp. Current Limit RDS(ON) Max. Maximum Output Power(1) Replaces Devices 230VAC±15%(2) 85-265VAC Adapter(3) Open Frame(4) Adapter(3) Open Frame(4) FSQ311 8-DIP -25 to +85°C 0.6A 19 Ω 7W 10W 6W 8W FSDL321 FSDM311 FSQ0165RN 8-DIP -25 to +85°C 0.9A 10 Ω 10W 15W 9W 13W FSDL0165RN FSQ0265RN 8-DIP -25 to +85°C 1.2A 6 Ω 14W 20W 11W 16W FSDM0265RN FSDM0265RNB FSQ0365RN 8-DIP -25 to +85°C 1.5A 4.5 Ω 17.5W 25W 13W 19W FSDM0365RN RSDM0365RNB
Figure 3. Pin Configuration (Top View) 1G N D Ground. This pin is the control ground and the SenseFET source. operating current for both start-up and steady-state operation.
4 Sync
sync comparator is 0.7V/0.2V. ternal current source is disabled. 6D r a i n SenseFET drain. High-voltage power SenseFET drain connection. 7D r a i n SenseFET drain. High-voltage power SenseFET drain connection. 8D r a i n SenseFET drain. High-voltage power SenseFET drain connection.
FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311 Green Mode Fairchild Power Switch (FPS™) for QRC © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311 Rev. 1.0.0 4 Absolute Maximum Ratings The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. TA = 25°C, unless otherwise specified. Notes: 6. Repetitive rating: Pulse width limited by maximum junction temperature. 7. L=14mH, starting TJ=25°C. 8. Meets JEDEC Standards JESD 22-A114 and 22-A115. Thermal Impedance(9) Notes: 9. All items are tested with the standards JESD 51-2 and 51-10 (DIP). 10. Free-standing, with no heat-sink, under natural convection. 11. Infinite cooling condition - refer to the SEMI G30-88. 12. Measured on the PKG top surface. Symbol Parameter Min. Max. Unit Vstr Vstr Pin Voltage 500 V VDS Drain Pin Voltage 650 V VCC Supply Voltage 20 V VFB Feedback Voltage Range -0.3 9.0 V VSync Sync Pin Voltage -0.3 9.0 V IDM Drain Current Pulsed(6) FSQ0365RN 12 A FSQ0265RN 8 FSQ0165RN 4 FSQ311 1.5 EAS Single Pulsed Avalanche Energy(7) FSQ0365RN 230 mJ FSQ0265RN 140 FSQ0165RN 50 FSQ311 10 P D Total Power Dissipation 1.5 W TJ Operating Junction Temperature Internally limited °C TA Operating Ambient Temperature -25 85 °C TSTG Storage Temperature -55 150 °C ESD Capability, HBM Model(8) CLASS1 C ESD Capability, Machine Model(8) CLASS B Symbol Parameter Value Unit 8-DIP θJA (10) Junction-to-Ambient Thermal Resistance 80 °C/WθJC (11) Junction-to-Case Thermal Resistance 20 θJT (12) Junction-to-Top Thermal Resistance 35
FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311 Green Mode Fairchild Power Switch (FPS™) for QRC © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311 Rev. 1.0.0 5
Electrical Characteristics
TA = 25°C unless otherwise specified. Symbol Parameter Condition Min. Typ. Max. Unit SENSEFET SECTION BVDSS Drain Source Breakdown Voltage V CC = 0V, ID = 100µA 650 V IDSS Zero-Gate-Voltage Drain Current V DS = 560V 100 µA RDS(ON) Drain-Source on- State Resistance FSQ0365RN TJ = 25°C, ID = 0.5A 3.5 4.5 Ω FSQ0265RN 5.0 6.0 FSQ0165RN 8.0 10.0 FSQ311 14.0 19.0 CSS Input Capacitance FSQ0365RN VGS = 0V, VDS = 25V, f = 1MHz 315 pF FSQ0265RN 550 FSQ0165RN 250 FSQ311 162 C OSS Output Capacitance FSQ0365RN VGS = 0V, VDS = 25V, f = 1MHz pF FSQ0265RN 38 FSQ0165RN 25 FSQ311 18 C RSS Reverse Transfer Capacitance FSQ0365RN VGS = 0V, VDS = 25V, f = 1MHz 9.0 pF FSQ0265RN 17.0 FSQ0165RN 10.0 FSQ311 3.8 td(on) Turn-On Delay Time FSQ0365RN VDD = 350V, ID = 25mA 11.2 ns FSQ0265RN 20.0 FSQ0165RN 12.0 FSQ311 9.5 t r Rise Time FSQ0365RN VDD = 350V, ID = 25mA ns FSQ0265RN 15 FSQ0165RN 4 FSQ311 19 t d(off) Turn-Off Delay Time FSQ0365RN VDD = 350V, ID = 25mA 28.3 ns FSQ0265RN 55.0 FSQ0165RN 30.0 FSQ311 33.0 t f Fall Time FSQ0365RN VDD = 350V, ID = 25mA ns FSQ0265RN 25 FSQ0165RN 10 FSQ311 42
FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311 Green Mode Fairchild Power Switch (FPS™) for QRC © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311 Rev. 1.0.0 6 Electrical Characteristics (Continued) TA = 25°C unless otherwise specified. Notes: 13. Though guaranteed, it is not tested in the mass production. 14. Propagation delay in the control IC. 15. Include gate turn-on time. Symbol Parameter Condition Min. Typ. Max. Unit CONTROL SECTION tON.MAX Maximum ON Time T J = 25°C 10.5 12.0 13.5 µsec tB Blanking Time 13.2 15.0 16.8 µsec tW Detection Time Window T J = 25°C, Vsync = 0V 3.0 µsec fS Initial Switching Frequency 50.5 55.6 61.7 kHz ΔfS Switching Frequency Variation(13) -25°C < TJ < 85°C ±5 ±10 % IFB Feedback Source Current V FB = 0V 700 900 1100 µA DMIN Minimum Duty Cycle V FB = 0V 0 % VSTART UVLO Threshold Voltage 11 12 13 V VSTOP After turn-on 7 8 9 V tS/S Internal Soft-Start Time With free-running frequency 15 ms BURST-MODE SECTION VBURH Burst-Mode Voltages TJ = 25°C, tPD = 200ns(14) 0.45 0.55 0.65 V VBURL 0.25 0.35 0.45 V Hysteresis 200 mV PROTECTION SECTION ILIMIT Peak Current Limit FSQ0365RN T J = 25°C, di/dt = 240mA/µsec 1.32 1.50 1.68 A FSQ0265RN T J = 25°C, di/dt = 200mA/µsec 1.06 1.20 1.34 FSQ0165RN T J = 25°C, di/dt = 150mA/µsec 0.8 0.9 1.0 FSQ311 T J = 25°C, di/dt = 100mA/µsec 0.53 0.60 0.67 VSD Shutdown Feedback Voltage V CC = 15V 5.5 6.0 6.5 V IDELAY Shutdown Delay Current V FB = 5V 4 5 6 µA tLEB Leading-Edge Blanking Time(13) 200 ns VOVP Over-Voltage Protection V CC = 15V, VFB = 2V 5.5 6.0 6.5 V tOVP Over-Voltage Protection Blanking Time 2 3 4 µsec TSD Thermal Shutdown Temperature(13) 125 140 155 °C SYNC SECTION VSH Sync Threshold Voltage 0.55 0.70 0.85 V VSL 0.14 0.20 0.26 V tsync Sync Delay Time(13)(15) 300 ns TOTAL DEVICE SECTION IOP Operating Supply Current (Control Part Only) VCC = 15V 1 3 5 mA ISTART Start Current VCC = VSTART - 0.1V (before VCC reaches VSTART) 270 360 450 µA ICH Start-up Charging Current V CC = 0V, VSTR = min. 40V 0.65 0.85 1.00 mA VSTR Minimum VSTR Supply Voltage 26 V
FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311 Green Mode Fairchild Power Switch (FPS™) for QRC © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311 Rev. 1.0.0 7 Comparison Between FSDM0x65RNB and FSQ-Series Function FSDM0x65RNB FSQ-Series FSQ-Series Advantages Operation method Constant frequency PWM Quasi-resonant operation Improved efficiency by valley switching Reduced EMI noise EMI reduction Frequency modulation Valley switching & inherent frequency modulation Reduce EMI noise by two ways Burst-mode operation Fixed burst peak Advanced burst-mode Improved standby power by valley switch- ing also in burst-mode Because the current peak during burst operation is dependent on VFB, it is easier to solve audible noise Protection AOCP Improved reliability through precise abnor- mal over-current protection
- Startup: At startup, an internal high-voltage current
Figure 20. Start-up Circuit
- Feedback Control: FPS employs current mode
are typically used to impl ement the feedback network. voltage is increased or the output load is decreased.
2.1 Pulse-by-Pulse Current Limit: Because current
current through the SenseFET is limited.
2.2 Leading Edge Blanking (LEB): At the instant the
LEB) after the SenseFET is turned on. Figure 21. Pulse-Width-Modulation (PWM) Circuit
- Synchronization: The FSQ-series employs a quasi-
winding voltage, as shown in Figure 22. Figure 22. Quasi-Resonant Switching Waveforms
3 OSC
- Protection Circuits: The FSQ-series has several
switching is terminated and the SenseFET remains off. reliability is improved without increasing cost. Figure 23. Auto Restart Protection Waveforms
4.1 Overload Protection (OLP): Overload is defined as
protection circuit should trigger to protect the SMPS. 20 ~ 50ms delay time is typical for most applications. Figure 24. Overload Protection
4.2 Abnormal Over-Current Protection (AOCP): When
Figure 25. Abnormal Over-Current Protection
4.3 Over-Voltage Protection (OVP): If the secondary
in the breakdown of the devices in the secondary side. voltage of the sync signal should be designed below 6V.
4.4 Thermal Shutdown (TSD): The SenseFET and the
exceeds ~150°C, the thermal shutdown triggers.
- Soft-Start: The FPS has an internal soft-start circuit
stress on the secondary diode during startup.
- Burst Operation: To minimize power dissipation in
thereby reducing switching loss in standby mode. Figure 26. Waveforms of Burst Operation
- Switching Frequency Limit: To minimize switching
as well as intermittent switching and audible noise. frequency-limit function, as shown in Figures 27 and 28.
FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311 Green Mode Fairchild Power Switch (FPS™) for QRC © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311 Rev. 1.0.0 15
Application Information
High efficiency ( >77% at universal input) Low standby mode power consumption (<1W at 230VAC input and 0.5W load) Reduce EMI noise through Quasi-Resonant Operation Enhanced system reliability through various protection functions Internal soft-start (15ms) Key Design Notes The delay time for overload protection is designed to be about 30ms with C107 of 47nF. If faster/slower triggering of OLP is required, C107 can be changed to a smaller/larger value (eg. 100nF for 60ms). The input voltage of Vsync must be higher than -0.3V. By proper voltage sharing by R106 & R107 resistors, the input voltage can be adjusted. The SMD-type 100nF capacitor must be placed as close as possible to VCC pin to avoid malfunction by abrupt pul- sating noises and to improved surge immunity. 1. Schematic Figure 29. Demo Circuit
Figure 30. Transformer Schematic Diagram
- Electrical Characteristics
FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311 Green Mode Fairchild Power Switch (FPS™) for QRC © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311 Rev. 1.0.0 17 6. Demo Board Part List Part Value Note Part Value Note Resistor Inductor R102 56k Ω 1W L201 10µH R103 5 Ω 1/2W L202 10µH R104 12k Ω 1/4W L203 4.9µH R105 100k Ω 1/4W L204 4.9µH R106 6.2k Ω 1/4W Diode R107 6.2k Ω 1/4W D101 IN4007 R108 62 Ω 1W D102 IN4004 R201 510 Ω 1/4W ZD101 1N4746A R202 1k Ω 1/4W D103 1N4148 R203 6.2k Ω 1/4W D201 UF4003 R204 20k Ω 1/4W D202 UF4003 R205 6k Ω 1/4W D203 SB360 Capacitor D204 SB360 C101 100nF/275V AC Box Capacitor C102 100nF/275V AC Box Capacitor IC C103 33µF/400V Electrolytic Capacitor IC101 FSQ0365RN FPS™ C104 10nF/630V Film Capacitor IC201 KA431 (TL431) Voltage reference C105 47nF/50V Mono Capacitor IC202 FOD817A Opto-coupler C106 100nF/50V SMD (1206) Fuse C107 22µF/50V Electrolytic Capacitor Fuse 2A/250V C110 33pF/50V Ceramic Capacitor NTC C201 470µF/35V Electrolytic Capacitor RT101 5D-9 C202 470µF/35V Electrolytic Capacitor Bridge Diode C203 470µF/35V Electrolytic Capacitor BD101 2KBP06M2N257 Bridge Diode C204 470µF/35V Electrolytic Capacitor Line Filter C205 1000µF/10V Electrolytic Capacitor LF101 40mH C206 1000µF/10V Electrolytic Capacitor Transformer C207 1000µF/10V Electrolytic Capacitor T101 C208 1000µF/10V Electrolytic Capacitor Varistor C209 100nF /50V Ceramic Capacitor TNR 10D471K
FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311 Green Mode Fairchild Power Switch (FPS™) for QRC © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311 Rev. 1.0.0 18 Package Dimensions 8-DIP Dimensions are in millimeters unless otherwise noted. September 1999, Rev B 6.40 ±0.20 3.30 ±0.30 0.130 ±0.012 3.40 ±0.20 0.134 ±0.008 #4 #5 0.252 ±0.008 9.20 ±0.20 0.79 2.54 0.100 0.031() 0.46 ±0.10 0.018 ±0.004 0.060 ±0.004 1.524 ±0.10 0.362 ±0.008 9.60
0.378 MAX
5.08 0.200 0.33 0.013 7.62 0~15° 0.300 MAX MIN 0.25 +0.10 –0.05 0.010 +0.004 –0.002 8dip_dim.pdf
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