FSCM0465R FAIRCHILD | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 20
Technical content
Features
Internal Avalanche Rugged SenseFET Low Start-up Current (max. 40µA) Low Power Consumption; under 1W at 240VAC and 0.4W Load Precise Fixed Operating Frequency (66kHz) Frequency Modulation for Low EMI Pulse-by-Pulse Current Limiting (Adjustable) Over-Voltage Protection (OVP) Overload Protection (OLP) Thermal Shutdown Function (TSD) Auto-Restart Mode Under-Voltage Lock Out (UVLO) with Hysteresis Built-in Soft-Start (15ms)
Applications
SMPS for VCR, SVR, STB, DVD, and DVCD Adaptor SMPS for LCD Monitor Related Application Notes AN-4137: Design Guidelines for Off-line Flyback Converters Using Fairchild Power Switch (FPS) AN-4140: Transformer Design Consideration for Off-line Flyback Converters using Fairchild Power Switch AN-4141: Troubleshooting and Design Tips for Fairchild Power Switch Flyback Applications AN-4148: Audible Noise Reduction Techniques for FPS Applications
Description
The FSCM0465R is an integrated Pulse-Width Modulator (PWM) and SenseFET specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with mini mal external components. This device is an integrated high-voltage power- switching regulator that combines an avalanche rugged SenseFET with a current mode PWM control block. The PWM controller includes an integrated fixed-frequency oscillator, under-voltage lockout, 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, it can reduce total cost, component count, size, and weight while simultaneously increasing efficiency, productivity, and system reliability. This device is a basic platform well suited for cost-effective designs of flyback converters.
Ordering Information
Note: 1. WDTU: Forming Type Product Number Package Pb-Free Marking Code BV DSS RDS(ON) Max. Packing Method FSCM0465RJ D2-PAK-6L Yes CM0465R 650V 2.6 Ω Tube FSCM0465RJX D2-PAK-6L Yes Tape & Reel FSCM0465RIWDTU (1) I2-PAK-6L Yes Tube FSCM0465RGWDTU(1) TO-220-6L Yes Tube
Figure 1. Typical Flyback Application
- Typical continuous power in a non-ventilated enclosed adapter measured at 50°C ambient
- Maximum practical continuous power in an open-frame design at 50°C ambient
- 230 VAC or 100/115 VAC with doubler
Figure 2. Functional Block Diagram of FSCM0465R
Figure 3. Pin Configuration (Top View) designed to drive the transformer directly. 2G N D Ground. This pin is the control ground and the SenseFET source. reaches 12V, the power is supplied from the auxiliary transformer winding.
4 Feedback (FB)
sulting in shutdown of the FPS. 5 N.C. This pin is not connected.
6 I_limit
changed. If this pin is left floating, the typical current limit is 2.0A.
FSCM0465R Green Mode Fairchild Power Switch (FPS™) © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSCM0465R Rev. 1.0.1 5 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: 1. Tj = 25°C to 150°C 2. Repetitive rating: Pulse-width limited by maximum junction temperature 3. TC: Case back surface temperature with infinite heat sink Symbol Parameter Value Unit BVDSS Drain-Source Breakdown Voltage(1) 650 V VDGR Drain-Gate Voltage (RGS=1MΩ)6 5 0 V VGS Gate-Source (GND) Voltage ±30 V IDM Drain Current Pulsed(2) 16 A DC ID Continuous Drain Current (TO-220-6L, I2-PAK-6L) TC = 25°C 4.0 A DC TC = 100°C 2.5 A DC Continuous Drain Current (D2-PAK-6L) TC = 25°C 2.3 A DC TC = 100°C 1.4 A DC VCC Supply Voltage 20 V VFB Feedback Voltage Range -0.3 to V CC V PD Total Power Dissipation (TO-220-6L) 140 W Derating -1.1 W/°C PD Total Power Dissipation (I2-PAK-6L) 75 W Derating -1.5 W/°C PD Total Power Dissipation (D2-PAK-6L) 80 W Derating -0.64 W/°C TJ Operating Junction Temperature Internally limited °C TA Operating Ambient Temperature -25 to +85 °C TSTG Storage Temperature -55 to +150 °C ESD Capability, HBM Model (All pins except Vfb) 2.0 (GND-Vfb = 1.5kV) (VCC-Vfb = 1.0kV) kV ESD Capability, Machine Model (All pins except Vfb) 300 (GND-Vfb = 250V) (VCC-Vfb = 100V) V
FSCM0465R Green Mode Fairchild Power Switch (FPS™) © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSCM0465R Rev. 1.0.1 6
Electrical Characteristics
TA = 25°C unless otherwise specified. Notes: 1. Pulse Test: Pulse width ≤ 300µS, duty ≤ 2% 2. These parameters, although guaranteed at the design, are not tested in mass production. 3. These parameters indicate the inductor current. Where packages are I2PAK or D2PAK, this should be decreased to 2.0A by external resistor. 4. MOSFET switching time is essentially independent of operating temperature. Symbol Parameter Condition Min. Typ. Max. Unit SenseFET SECTION IDSS Zero Gate Voltage Current V DS = Max, Rating VGS = 0V - - 250 µA RDS(ON) Static Drain Source on Resistance(1) VGS = 10V, ID = 2.3A - 2.2 2.6 Ω COSS Output Capacitance V GS = 0V, VDS = 25V, f = 1MHz - 60 - pF td(on) Turn-on Delay Time VDD = 325V, ID = 3.2A(4) -2 3- ns tr Rise Time - 20 - td(off) Turn-off Delay Time - 65 - tf Fall Time - 27 - CONTROL SECTION fOSC Switching Frequency V CC = 14V, VFB = 5V 60 66 72 kHz ΔfMOD Switching Frequency Modulation Range - ±3 - kHz tMOD Switching Frequency Modulation Cycle - 4 - ms fSTABLE Switching Frequency Stability 10V ≤ VCC ≤ 1 7 V 013 % ΔfOSC Switching Frequency Variation(2) −25°C ≤ TA ≤ +85°C - ±5 ±10 % DMAX Maximum Duty Cycle 75 80 85 % DMIN Minimum Duty Cycle - - 0 % VSTART UVLO Threshold Voltage V FB = GND 11 12 13 V VSTOP 789V IFB Feedback Source Current V FB = GND 0.7 0.9 1.1 mA tS/S Internal Soft-Start Time 10 15 20 ms BURST MODE SECTION VBURH Burst Mode Voltages VCC = 14V 0.4 0.5 0.6 V VBURL VCC = 14V 0.24 0.3 0.36 V PROTECTION SECTION ILIMIT Peak Current Limit(3) V CC = 14V, VFB = 5V 2.2 2.5 2.8 A VOVP Over-Voltage Protection 18 19 20 V TSD Thermal Shutdown Temperature(2) 130 145 160 °C IDELAY Shutdown Delay Current V FB = 4V 3.5 5.3 7 µA VSD Shutdown Feedback Voltage V FB ≥ 5.5V 5.5 6 6.5 V TOTAL DEVICE SECTION Istart Startup Current - 20 40 µA IOP(MIN) Operating Supply Current VCC = 10V, VFB = 0V -2 . 55 m A IOP(MAX) VCC = 20V, VFB = 0V
FSCM0465R Green Mode Fairchild Power Switch (FPS™) © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSCM0465R Rev. 1.0.1 7 Comparison Between FSDM0465RB and FSCM0465R Function FSDM0465RB FSCM0465R Frequency Modulation N/A Available - Frequency modulation range (ΔfMOD) = ±3kHz - Frequency modulation cycle (tMOD) = 4ms Pulse-by-pulse Current Limit Internally fixed (2.0A ma x.) Programmable using extern al resistor (2.8A max.) Internal Startup Circuit Available N/A (Requires a startup resistor) Startup current: 40µA (max.) Packages TO-220F-6L TO-220-6L I2-PAK-6L D2-PAK-6L
- Startup: Figure 16 shows the typical startup circuit
Figure 16. Startup Circuit Figure 17. Relation Between Operating Supply not be charged to the start voltage and FPS fails to start.
- Feedback Control : The FSCM0465R employs
voltage is increased or the output load is decreased.
2.1 Pulse-by-pulse Current Limit : Because current
Figure 18. Pulse Width Modulation (PWM) Circuit
4 OSC
2.2 Constant Power Limit Circuit : Due to the circuit
good choice for all applications. Figure 19. Constant power limit circuit
2.3 Leading Edge Blanking (LEB) : At the instant the
short time after the SenseFET is turned on.
- Protection Circuit : The FSCM0465R has several
the SenseFET remains off. This causes V CC to fall. until the fault condition is eliminated (see Figure 20). Figure 20. Auto Restart Operation
3.1 Overload Protection (OLP): Overload is defined as
transistor current, increasing the feedback voltage (Vfb). Figure 21. Overload Protection
3.2 Over-Voltage Protection (OVP) : If the secondary-
VCC should be designed to be below 19V.
3.3 Thermal Shutdown (TSD) : The SenseFET and the
resulting in shutdown of the FPS.
- Frequency Modulation : EMI reduction can be
directly related to the dept h of the reference frequency. Figure 22. Frequency Modulation
- Soft-Start: The FSCM0465R has an internal soft-start
during startup is also helpful.
- Burst Operation : To minimize power dissipation in
Figure 23. Waveforms of Burst Operation
FSCM0465R Green Mode Fairchild Power Switch (FPS™) © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSCM0465R Rev. 1.0.1 14 Typical Application Circuit High efficiency (>81% at 85Vac input) Low standby mode power consumption (<1W at 240Vac input and 0.4W load) Low component count Enhanced system reliability through various protection functions Low EMI through frequency modulation Internal soft-start (15ms) Key Design Notes Resistors R107 and R108 are employed to prevent startup at low input voltage The delay time for overload protection is designed to be about 50ms with C106 of 100nF. If a faster triggering of OLP is required, C106 can be reduced to 22nF. 1. Schematic Figure 24. Demo Circuit
Figure 25. Transformer Schematic Diagram
- Electrical Characteristics
FSCM0465R Green Mode Fairchild Power Switch (FPS™) © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSCM0465R Rev. 1.0.1 16 6. Demo Circuit Part List Part Value Note Part Value Note Fuse C301 4.7nF Polyester Film Cap. F101 2A/250V NTC Inductor RT101 5D-9 L201 5µH Wire 1.2mm Resistor L202 5µH Wire 1.2mm R101 560k Ω 0.5W R103 56k Ω 2W R104 20 Ω 1/4W Diode R107 330k Ω 1/4W D101 UF4007 R108 330k Ω 1/4W D102 UF4004 R201 1k Ω 1/4W D201 MBRF1060 R202 1.2k Ω 1/4W D202 MBRF10H100 R203 10k Ω 1/4W R204 5.6k Ω 1/4W R205 5.6k Ω 1/4W Bridge Diode BD101 2KBP06M 3N257 Bridge Diode Capacitor C101 220nF/275VAC Box Capacitor Line Filter C102 220nF/275VAC Box Capacitor LF101 23mH Wire 0.4mm C103 100µF/400V Electrolytic Capacitor IC C104 3.3nF/630V Ceramic Capacitor IC101 FSCM0465R FPS™ (2.5A, 650V) C105 22µF/50V Electrolytic Capacitor IC201 KA431(TL431) Voltage Reference C106 100nF/50V Ceramic Capacitor IC301 H11A817A Opto-coupler C201 1000µF/25V Electrolytic Capacitor C202 1000µF/25V Electrolytic Capacitor C203 1000µF/10V Electrolytic Capacitor C204 1000µF/10V Electrolytic Capacitor C205 47nF/50V Ceramic Capacitor
FSCM0465R Green Mode Fairchild Power Switch (FPS™) © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSCM0465R Rev. 1.0.1 17 Package Dimensions D2-PAK-6L Dimensions are in millimeters unless otherwise specified. NOTES: UNLESS OTHERWISE SPECIFIED A) THIS PACKAGE DOES NOT COMPLY TO ANY CURRENT PACKAGING STANDARD. B) ALL DIMENSIONS ARE IN MILLIMETERS. C) DIMENSIONS ARE EXCLUSIVE OF BURRS, MOLD FLASH, AND TIE BAR EXTRUSIONS. D) DIMENSIONS AND TOLERANCES PER ASME Y14.5M-1994 5.10 4.70 9.40 9.00 (0.75) 2.19 1.27 3.81 1.75 1.40 1.00 10.10 9.70 1.40 1.25 4.70 4.30 0.70 0.50 MIN 9.50 MIN 9.00 10.00 MIN 4.00 MIN 0.85 2.19 1.27 1.75 B MKT-TO263A6 A (4.40) (8.58) (1.75) (0.90) (7.20) 15.60 15.00 R0.45 10.20 9.80 MAX1.10 MAX0.80
FSCM0465R Green Mode Fairchild Power Switch (FPS™) © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSCM0465R Rev. 1.0.1 18 Package Dimensions (Continued) I2-PAK-6L (Forming) Dimensions are in millimeters unless otherwise specified. MKT-TO262A6
FSCM0465R Green Mode Fairchild Power Switch (FPS™) © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSCM0465R Rev. 1.0.1 19 Package Dimensions (Continued) TO-220-6L (Forming) Dimensions are in millimeters unless otherwise specified.
FSCM0465R Green Mode Fairchild Power Switch (FPS™) Rev. I19 TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO M AKE 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 DESCRIBE D 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 syst ems are devices or systems which, (a) are intended for surg ical implant into the body, or (b) support or sustain life, or (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 signifi- cant injury to the user. 2. A critical component is any co mponent 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 sys- tem, or to affect its safety or effectiveness. PRODUCT STATUS DEFINITIONS Definition of Terms ACEx™ ActiveArray™ Bottomless™ Build it Now™ CoolFET™ CROSSVOLT™ DOME™ EcoSPARK™ E 2CMOS™ EnSigna™ FACT™ FAST® FASTr™ FPS™ FRFET™ GlobalOptoisolator™ GTO™ HiSeC™ I 2C™ i-Lo™ ImpliedDisconnect™ IntelliMAX™ ISOPLANAR™ LittleFET™ MICROCOUPLER™ MicroFET™ MicroPak™ MICROWIRE™ MSX™ MSXPro™ OCX™ OCXPro™ OPTOLOGIC OPTOPLANAR™ PACMAN™ POP™ Power247™ PowerEdge™ PowerSaver™ PowerTrench® QFET® QS™ QT Optoelectronics™ Quiet Series™ RapidConfigure™ RapidConnect™ µSerDes™ ScalarPump™ SILENT SWITCHER SMART START™ SPM™ Stealth™ SuperFET™ SuperSOT™-3 SuperSOT™-6 SuperSOT™-8 SyncFET™ TCM™ TinyLogic TINYOPTO™ TruTranslation™ UHC™ UniFET™ UltraFET VCX™ Wire™ FACT Quiet Series™ Across the board. Around the world.™ The Power Franchise® Programmable Active Droop™ Datasheet Identification Product Status Definition Advance Information Formative or In Design This datas heet contains the design specifications for product development. Specifications may change in any manner with- out notice. Preliminary First Production This datasheet co ntains preliminary data, and 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 fi nal specifications. Fairchild Semicon- ductor reserves the right to make changes at any time without notice to improve design. Obsolete Not In Production This datasheet contai ns specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only. © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSCM0465R Rev. 1.0.1 20