FSQ0565R FAIRCHILD | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 22
Technical content
Features
Optimized for Quasi-Resonant Converter (QRC) Low EMI through Variable Frequency Control and AVS (Alternating Valley Switching) 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 Simple Scheme for Sync Voltage Detection Pulse-by-Pulse Current Limit Various Protection functions: Overload Protection (OLP), Over-Voltage Protection (OVP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD) with Hysteresis, Output Short Protection (OSP) 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 LCD TV and Monitor, VCR, SVR, STB, and DVD & DVD Recorder Adapter Related Resourses Visit: http://www.fairchildsemi.com/apnotes/ for: AN-4134: Design Guidelines for Offline Forward Converters Using Fairchild Power Switch (FPS™ ) AN-4137: Design Guidelines for Offline Flyback Converters Using Fairchild Power Switch (FPS™ ) AN-4140: Transformer Design Consideration for Offline Flyback Converters Using Fairchild Power Switch (FPS ™ ) AN-4141: Troubleshooting and Design Tips for Fairchild Power Switch (FPS™ ) Flyback Applications AN-4145: Electromagnetic Compatibility for Power Converters AN-4147: Design Guidelines for RCD Snubber of Flyback AN-4148: Audible Noise Reduction Techniques for Fairchild Power Switch Fairchild Power Switch(FPS AN-4150: Design Guidelines for Flyback Converters Using FSQ-Series Fairchild Power Switch (FPS™ )
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 and Alternating Valley Switching (AVS). The PWM controller includes an integrated fixed-frequency oscillator, Under-Voltage Lockout (UVLO), Leading- Edge Blanking (LEB), optimized gate driver, internal soft- start, temperature-compensated precise current sources for a loop compensation, and self-protection circuitry. Compared with a 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 flyback converters.
FSQ0565R, FSQ0765R — Green-Mode Farichild Power Switch (FPS™) for Quasi-Resonant Operation © 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0565R, FSQ0765R Rev. 1.0.0 2
Ordering Information
Notes: 1. The junction temperature can limit the maximum output power. 2. 230VAC or 100/115VAC with doubler. 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 PKG.(5) 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) FSQ0565R TO-220F-6L -25 to +85°C 3.0A 2.2 Ω 70W 80W 41W 60W FSCM0565R FSDM0565RB FSQ0765R TO-220F-6L -25 to +85°C 3.5A 1.6 Ω 80W 90W 48W 70W FSCM0765R FSDM0765RB
Figure 3. Pin Configuration (Top View) 1D r a i n SenseFET drain. High-voltage power SenseFET drain connection. 2G N D Ground. This pin is the control ground and the SenseFET source. rent for both start-up and steady-state operation. tection triggers, which shuts down the FPS. ing. In normal quasi-resonant operation, the threshold of the sync comparator is 1.2V/1.0V. disabled. It is not recommended to connect Vstr and Drain together.
FSQ0565R, FSQ0765R — Green-Mode Farichild Power Switch (FPS™) for Quasi-Resonant Operation © 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0565R, FSQ0765R Rev. 1.0.0 5 Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera- ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi- tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. TA = 25°C, unless otherwise specified. Notes: 6. Repetitive rating: Pulse width limited by maximum junction temperature. 7. L=14mH, starting TJ=25°C. Thermal Impedance TA = 25°C unless otherwise specified. Notes: 8. Free standing with no heat-sink under natural convection. 9. Infinite cooling condition - refer to the SEMI G30-88. 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 13 V VSync Sync Pin Voltage -0.3 11 V IDM Drain Current Pulsed FSQ0565R 11 A FSQ0765R 15 A ID Continuous Drain Current(6) FSQ0565R TC = 25°C 2.8 A TC = 100°C 1.7 FSQ0765R TC = 25°C 3.8 A TC = 100°C 2.4 EAS Single Pulsed Avalanche Energy(7) FSQ0565R 190 mJ FSQ0765R 370 mJ PD Total Power Dissipation(Tc=25oC) 45 W TJ Operating Junction Temperature Internally limited °C TA Operating Ambient Temperature -25 +85 °C TSTG Storage Temperature -55 +150 °C ESD Electrostatic Discharge Capability, Human Body Model 2.0 kV Electrostatic Discharge Capability, Charged Device Model 2.0 kV Symbol Parameter Package Value Unit θJA Junction-to-Ambient Thermal Resistance(8) TO-220F-6L 50 °C/W θJC Junction-to-Case Thermal Resistance(9) 2.8 °C/W
FSQ0565R, FSQ0765R — Green-Mode Farichild Power Switch (FPS™) for Quasi-Resonant Operation © 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0565R, FSQ0765R Rev. 1.0.0 6
Electrical Characteristics
TA = 25°C unless otherwise specified. Continued on the following page... 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 250 µA RDS(ON) Drain-Source On-State Resistance FSQ0565R T J = 25°C, ID = 0.5A 1.76 2.20 Ω FSQ0765R T J = 25°C, ID = 0.5A 1.4 1.6 COSS Output Capacitance FSQ0565R VGS = 0V, VDS = 25V, f = 1MHz pF FSQ0765R 100 td(on) Turn-On Delay Time FSQ0565R VDD = 350V, ID = 25mA ns FSQ0765R 25 tr Rise Time FSQ0565R VDD = 350V, ID = 25mA ns FSQ0765R 60 td(off) Turn-Off Delay Time FSQ0565R VDD = 350V, ID = 25mA ns FSQ0765R 115 tf Fall Time FSQ0565R VDD = 350V, ID = 25mA ns FSQ0765R 65 CONTROL SECTION tON.MAX Maximum On Time T J = 25°C 8.8 10.0 11.2 µs tB Blanking Time T J = 25°C, Vsync = 5V 13.2 15.0 16.8 µs tW Detection Time Window T J = 25°C, Vsync = 0V 6.0 µs fS Initial Switching Frequency 59.6 66.7 75.8 kHz ΔfS Switching Frequency Variation(9) -25°C < TJ < 85°C ±5 ±10 % tAVS AVS Triggering Threshold(9) On Time at VIN = 240VDC, Lm = 360μH (AVS triggered when VAVS>spec & tAVS<spec.) 4.0 µs VAVS Feedback Voltage 1.2 V tSW Switching Time Variance by AVS(9) Sync = 500kHz sine input VFB = 1.2V, tON = 4.0µs 13.5 20.5 µs 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 17.5 ms BURST-MODE SECTION VBURH Burst-Mode Voltages TJ = 25°C, tPD = 200ns(8) 0.45 0.55 0.65 V VBURL 0.25 0.35 0.45 V Hysteresis 200 mV
FSQ0565R, FSQ0765R — Green-Mode Farichild Power Switch (FPS™) for Quasi-Resonant Operation © 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0565R, FSQ0765R Rev. 1.0.0 7 Electrical Characteristics (Continued) TA = 25°C unless otherwise specified. Notes: 8. Propagation delay in the control IC. 9. Guaranteed by design; not tested in production. 10. Includes gate turn-on time. Symbol Parameter Condition Min. Typ. Max. Unit PROTECTION SECTION ILIMIT Peak Current Limit FSQ0565R T J = 25°C, di/dt = 370mA/µs 2.64 3.00 3.36 A FSQ0765R T J = 25°C, di/dt = 460mA/µs 3.08 3.50 3.92 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(9) 250 ns tOSP Output Short Protection(9) Threshold Time TJ = 25°C OSP triggered when tON<tOSP , VFB>VOSP & lasts longer than tOSP_FB 1.2 1.4 µs VOSP Threshold Feedback Voltage 1.8 2.0 V tOSP_FB Feedback Blanking Time 2 2.5 3.0 µs TSD Thermal Shutdown(9) Shutdown Temperature 125 140 155 Hys Hysteresis 60 SYNC SECTION VSH1 Sync Threshold Voltage 1 V CC = 15V, VFB = 2V 1.0 1.2 1.4 V VSL1 0.8 1.0 1.2 tsync Sync Delay Time(9)(10) 230 ns VSH2 Sync Threshold Voltage 2 V CC = 15V, VFB = 2V 4.3 4.7 5.1 V VSL2 4.0 4.4 4.8 VCLAMP Low Clamp Voltage ISYNC_MAX = 800µA ISYNC_MIN = 50µA 0.0 0.4 0.8 V VOVP Over-Voltage Protection Threshold Voltage V CC = 15V, VFB = 2V 7 8 9 V tOVP Blanking Time(9) 1.0 1.7 2.4 µs TOTAL DEVICE SECTION IOP Operating Supply Current (Control Part Only) VCC = 13V 1 3 5 mA ISTART Start Current VCC = 10V (before VCC reaches VSTART) 350 450 550 µA ICH Start-up Charging Current VCC = 0V, VSTR = mininmum 50V 0.65 0.85 1.00 mA VSTR Minimum VSTR Supply Voltage 26 V
FSQ0565R, FSQ0765R — Green-Mode Farichild Power Switch (FPS™) for Quasi-Resonant Operation © 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0565R, FSQ0765R Rev. 1.0.0 8 Comparison Between FSDM0x65RNB and FSQ-Series Function FSDM0x65RE FSQ-Series FSQ-Series Advantages Operation Method Constant Frequency PWM Quasi-Resonant Operation Improved efficiency by valley switching Reduced EMI noise Reduced components to detect valley point EMI Reduction Frequency Modulation Reduce EMI Noise Valley Switching Inherent Frequency Modulation Alternate Valley Switching Hybrid Control CCM or AVS Based on Load and Input Condition Improves efficiency by introducing hybrid control Burst-Mode Operation Burst-Mode Operation Advanced Burst-Mode Operation Improved standby power by AVS in burst-mode Strong Protections OLP, OVP OLP, OVP, AOCP, OSP Improved reliability through precise AOCP Improved reliability through precise OSP TSD 145°C without Hysteresis 140°C with 60°C Hysteresis Stable and reliable TSD operation Converter temperature range
- Start-up: At start-up, an internal high-voltage current
Figure 22. Start-up Circuit
- Feedback Control: FPS employs current-mode
are typically used to impl ement the feedback network. increased or the output load is decreased.
2.1 Pulse-by-Pulse Current Limit: Because current-
through the SenseFET is limited.
2.2 Leading-Edge Blanking (LEB): At the instant the
LEB) after the SenseFET is turned on. Figure 23. Pulse-Width-Modulation (PWM) Circuit
- Synchronization: The FSQ-series employs a quasi-
winding voltage, as shown in Figure 24. Figure 24. Quasi-Resonant Switching Waveforms
4 OSC
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 29. Overload Protection
4.2 Abnormal Over-Current Protection (AOCP): When
Figure 30. Abnormal Over-Current Protection
4.3 Output-Short Protection (OSP): If the output is
abnormal condition output short is shown in Figure 31. Figure 31. Output Short Waveforms
4.4 Over-Voltage Protection (OVP): If the secondary-
in the breakdown of the de vices in the secondary side.
the leakage inductance shown at VCC winding coil. Figure 32. OVP Triggering
4.5 Thermal Shutdown with Hysteresis (TSD): The
SenseFET and the control IC are built in one package.
- Soft-Start: The FPS has an internal soft-start circuit
stress on the secondary diode during start-up.
- Burst Operation: To minimize power dissipation in
thereby reducing switching loss in standby mode. Figure 33. Waveforms of Burst Operation
- Switching Frequency Limit: To minimize switching
topology in a wide range of applications. frequency-limit function, as shown in Figures 34 and 35. shown in Figures 34 and Figure 35 (Cases A, B, and C).
the same trace and meet only at one point, the GND pin. currents by decreasing resistance. connect to the signal ground (not power ground). traces should not draw across or close to the drain line. using jumper wires for power ground and drain. Mylar® is a registered trademark of DuPont Teijin Films. Figure 37. Recommended PCB Layout
FSQ0565R, FSQ0765R — Green-Mode Farichild Power Switch (FPS™) for Quasi-Resonant Operation © 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0565R, FSQ0765R Rev. 1.0.0 18 Typical Application Circuit Average efficiency of 25%, 50%, 75%, and 100% load conditions is higher than 80% at universal input Low standby mode power consumption (<1W at 230VAC input and 0.5W load) Reduce EMI noise through valley switching 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 23ms with C105 of 33nF. If faster/slower triggering of OLP is required, C105 can be changed to a smaller/larger value (e.g. 100nF for 70ms). The input voltage of VSync must be between 4.7V and 8V just after MOSFET turn-off to guarantee hybrid control and to avoid OVP triggering during normal operation. 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 improve surge immunity. 1. Schematic Figure 38. Demo Circuit of FSQ0565R
Figure 39. Transformer Schematic Diagram of FSQ0565R
- Electrical Characteristics
FSQ0565R, FSQ0765R — Green-Mode Farichild Power Switch (FPS™) for Quasi-Resonant Operation © 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0565R, FSQ0765R Rev. 1.0.0 20 6. Demo Board Part List Part Value Note Part Value Note Resistor C205 47nF/50V Ceramic Capacitor R101 2M Ω 1W C301 4.7nF/1kV Ceramic Capacitor R102 68k Ω 1/2W Inductor R103 33k Ω 1W L201 5µH 5A Rating R104 20 Ω 1W L202 5µH 5A Rating R105 100 Ω optional, 1/4W Diode R107 18k Ω 1/4W D101 IN4007 1A, 1000V General-Purpose Rectifier R108 12k Ω 1/4W D102 UF4004 1A, 400V Ultrafast Rectifier R201 1k Ω 1/4W ZD101 1N4745A 1W 16V Zener Diode (optional) R202 1.2k Ω 1/4W D201 MBRF10H100 10A,100V Schottky Rectifier R203 1.2k Ω 1/4W D202 MBRF1060 10A,60V Schottky Rectifier R204 5.2k Ω 1/4W IC R205 4.7k Ω 1/4W IC101 FSQ0565R FPS™ Capacitor IC201 KA431 (TL431) Voltage Reference C101 150nF/275V AC Box Capacitor IC202 FOD817A Opto-Coupler C102 150nF/275V AC Box Capacitor Fuse C103 100µF/400V Electrolytic Capacitor Fuse 2A/250V C104 4.7nF/630V Film Capacitor NTC C105 33nF/50V Ceramic Capacitor RT101 5D-9 C106 100nF/50V SMD (1206) Bridge Diode C107 47µF/50V Electrolytic Capacitor BD101 2KBP06M2N257 Bridge Diode C201 1000µF/25V Low ESR Electrolytic Capacitor Line Filter C202 1000µF/25V Low ESR Electrolytic Capacitor LF101 34mH C203 1000µF/10V Low ESR Electrolytic Capacitor Transformer C204 1000µF/10V Low ESR Electrolytic Capacitor T1 EER3016 Ae=109.7mm 2
Figure 40. 6-Lead, TO-220 Package
The following are registered and unregistered trademarks and service marks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. ACEx Build it Now¥ CorePLUS¥ CROSSVOLT¥ CTL™ Current Transfer Logic™ EcoSPARK Fairchild Fairchild Semiconductor FACT Quiet Series™ FACT FAST FastvCore¥ FPS¥ FRFET Global Power Resource SM Green FPS¥ Green FPS¥ e-Series¥ GTO¥ i-Lo¥ IntelliMAX¥ ISOPLANAR¥ MegaBuck™ MICROCOUPLER¥ MicroFET¥ MicroPak¥ MillerDrive™ Motion-SPM™ OPTOLOGIC OPTOPLANAR PDP-SPM™ Power220 Power247 POWEREDGE Power-SPM¥ PowerTrench Programmable Active Droop¥ QFET QS¥ QT Optoelectronics¥ Quiet Series¥ RapidConfigure¥ SMART START¥ SPM STEALTH™ SuperFET¥ SuperSOT¥-3 SuperSOT¥-6 SuperSOT¥-8 SyncFET™ The Power Franchise TinyBoost¥ TinyBuck¥ TinyLogic TINYOPTO¥ TinyPower¥ TinyPWM¥ TinyWire¥ PSerDes¥ UHC UniFET¥ VCX¥ DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Product Status Definition Advance Information Formative or In Design This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. Preliminary First Production This datasheet contains preliminary data; supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design. No Identification Needed Full Production This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design. Obsolete Not In Production This datasheet contains specifications on a product that has been discontinued by Fairchild Semiconductor. The datasheet is printed for reference information only. Rev. I31 FSQ0565R, FSQ0765R — Green-Mode Farichild Power Switch (FPS™) for Quasi-Resonant Operation © 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0565R, FSQ0765R Rev. 1.0.0 22