Green Mode Fairchild Power Switch

www.fairchildsemi.com FSDM0565R Features Green Mode Fairchild Power Switch (FPSTM) • Internal Avalanche Rugged Sense FET • Advanced Burst-Mode operation consumes under 1 W at 240VAC & 0.5W load • Precision Fixed Operating Frequency (66kHz) • Internal Start-up Circuit • Pulse by Pulse Current Limiting • Abnormal Over Current Protection (AOCP) • Over Voltage Protection (OVP) • Over Load Protection (OLP) • Internal Thermal Shutdown Function (TSD) • Auto-Restart Mode • Under Voltage Lock Out (UVLO) with hysteresis • Low Operating Current (2.5mA) • Built-in Soft Start OUTPUT POWER TABLE 230VAC ±15%(3) PRODUCT FSDM0565R FSDM07652R Adapter(1) 60W 70W Open Frame(2) 70W 80W 85-265VAC Adapter(1) 50W 60W Open Frame(2) 60W 70W Table 1. Notes: 1. Typical continuous power in a non-ventilated enclosed adapter measured at 50°C ambient. 2. Maximum practical continuous power in an open frame design at 50°C ambient. 3. 230 VAC or 100/115 VAC with doubler. Application • SMPS for LCD monitor and STB • Adaptor Typical Circuit Description The FSDM0565R is an integrated Pulse Width Modulator (PWM) and Sense FET specifically designed for high performance offline Switch Mode Power Supplies (SMPS) with minimal external components. This device is an integrated high voltage power switching regulator which combine an avalanche rugged Sense FET with a current mode PWM control block. The PWM controller includes 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 discrete MOSFET and PWM controller solution, it can reduce total cost, component count, size and weight simultaneously increasing efficiency, productivity, and system reliability. This device is a basic platform well suited for cost effective designs of flyback converters. AC IN DC OUT Vstr PWM Vfb Drain Vcc Source Figure 1. Typical Flyback Application Rev.1.0.5 ©2005 Fairchild Semiconductor Corporation FSDM0565R Internal Block Diagram Vcc 3 N.C 5 0.5/0.7V + Vstr 6 Drain 1 Istart Vref 8V/12V Switching disable OSC IFB S Q Vcc Idelay Vref Vcc good Internal Bias Vfb 4 PWM 2.5R Soft start R Q Gate driver R LEB V SD Vcc S Q 2 GND Vovp TSD Vcc good R Q AOCP Vocp Figure 2. Functional Block Diagram of FSDM0565R 2 FSDM0565R Pin Definitions Pin Number 1 2 3 Pin Name Drain GND Vcc Pin Function Description This pin is the high voltage power Sense FET drain. It is designed to drive the transformer directly. This pin is the control ground and the Sense FET source. This pin is the positive supply voltage input. During start up, the power is supplied by an internal high voltage current source that is connected to the Vstr pin. When Vcc reaches 12V, the internal high voltage current source is disabled and the power is supplied from the auxiliary transformer winding. This pin is internally connected to the inverting input of the PWM comparator. The collector of an opto-coupler is typically tied to this pin. For stable operation, a capacitor should be placed between this pin and GND. If the voltage of this pin reaches 6.0V, the over load protection is activated resulting in shutdown of the FPSTM. This pin is connected directly to the high voltage DC link. At startup, the internal high voltage current source supplies internal bias and charges the external capacitor that is connected to the Vcc pin. Once Vcc reaches 12V, the internal current source is disabled. 4 Vfb 5 6 N.C Vstr Pin Configuration TO-220F-6L 6.Vstr 5.N.C. 4.Vfb 3.Vcc 2.GND 1.Drain Figure 3. Pin Configuration (Top View) 3 FSDM0565R Absolute Maximum Ratings (Ta=25°C, unless otherwise specified) Parameter Drain-source voltage Vstr Max Voltage Pulsed Drain current (Tc=25°C) (1) Symbol VDSS VSTR IDM ID EAS IAS VCC VFB PD(Watt H/S) Tj TA TSTG - Value 650 650 11 2.8 1.7 190 20 -0.3 to VCC 45 Internally limited -25 to +85 -55 to +150 2.0 (GND-Vstr/Vfb=1.5kV) 300 (GND-Vstr/Vfb=225V) Unit V V ADC A A mJ A V V W °C °C °C kV V Continuous Drain Current(Tc=25°C) Continuous Drain Current(Tc=100°C) Single pulsed avalanche energy Single pulsed avalanche current Supply voltage Input voltage range Total power dissipation(Tc=25°C) Operating junction temperature Operating ambient temperature Storage temperature range ESD Capability, HBM Model (All pins excepts for Vstr and Vfb) ESD Capability, Machine Model (All pins excepts for Vstr and Vfb) (2) (3) Notes: 1. Repetitive rating: Pulse width limited by maximum junction temperature 2. L=14mH, starting Tj=25°C 3. L=13uH, starting Tj=25°C Thermal Impedance Parameter Junction-to-Ambient Thermal Junction-to-Case Thermal Symbol Value 49.90 2.78 Unit °C/W °C/W θJA θJC(2) (1) Notes: 1. Free standing with no heat-sink under natural convection. 2. Infinite cooling condition - Refer to the SEMI G30-88. 4 FSDM0565R Electrical Characteristics (Ta = 25°C unless otherwise specified) Parameter Sense FET SECTION Drain source breakdown voltage BVDSS VGS = 0V, ID = 250µA VDS = 650V, VGS = 0V Zero gate voltage drain current Static drain source on resistance (1) Output capacitance Turn on delay time Rise time Turn off delay time Fall time CONTROL SECTION Initial frequency Voltage stability Temperature stability (2) Maximum duty cycle Minimum duty cycle Start threshold voltage Stop threshold voltage Feedback source current Soft-start time Leading Edge Blanking time BURST MODE SECTION Burst Mode Voltages (2) PROTECTION SECTION Peak current limit (4) Over voltage protection Abnormal Over current protection current (3) Thermal shutdown temperature (2) Shutdown feedback voltage IOVER VOVP IAOCP TSD VSD VFB ≥ 5.5V VFB=5V, VCC=14V 2.0 18 4.99 130 5.5 2.25 19 5.54 145 6.0 2.5 20 6.09 160 6.5 A V A °C V 5 VBURH VBURL Vcc=14V Vcc=14V 0.7 0.5 V V FOSC FSTABLE ∆FOSC DMAX DMIN VSTART VSTOP IFB TS TLEB VFB=GND VFB=GND VFB=GND Vfb=3 VFB = 3V 13V ≤ Vcc ≤ 18V -25°C ≤ Ta ≤ 85°C 60 0 0 75 11 7 0.7 66 1 ±5 80 12 8 0.9 10 250 72 3 ±10 85 0 13 9 1.1 15 kHz % % % % V V mA ms ns IDSS VDS= 520V VGS = 0V, TC = 125°C VGS = 10V, ID = 2.5A VGS = 0V, VDS = 25V, f = 1MHz VDD= 325V, ID= 5A (MOSFET switching time is essentially independent of operating temperature) 650 1.76 78 22 52 95 50 50 200 2.2 ns V µA µA Ω Symbol Condition Min. Typ. Max. Unit RDS(ON) COSS TD(ON) TR TD(OFF) TF pF FSDM0565R Shutdown delay current TOTAL DEVICE SECTION IDELAY VFB=5V 2.8 3.5 4.2 µA IOP Operating supply current (5) IOP(MIN) IOP(MAX) VFB=GND, VCC=14V VFB=GND, VCC=10V VFB=GND, VCC=18V 2.5 5 mA 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, although guaranteed, are tested in EDS(wafer test) process. 4. These parameters indicate the inductor current. 5. This parameter is the current flowing into the control IC. 6 FSDM0565R Comparison Between FS6M07652RTC and FSDM0565R Function Soft-Start FS6M07652RTC Adjustable soft-start time using an external capacitor FSDM0565R FSDM0565R Advantages Internal soft-start with • Gradually increasing current limit typically 10ms (fixed) during soft-start further reduces peak current and voltage component stresses • Eliminates external components used for soft-start in most applications • Reduces or eliminates output overshoot Burst Mode Operation • Built into controller • Built into controller • Improve light load efficiency • Output voltage fixed • Reduces no-load consumption • Output voltage drops to around half 7 FSDM0565R Typical Performance Characteristics (These Characteristic Graphs are Normalized at Ta= 25°C) 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Ju nc tion Tempe ratu re (℃) 1.2 1.0 Start Thershold Voltage (Vstart) 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Ju nc tion Tempe ratu re (℃) Operating Current (Iop) Operating Current vs. Temp 1.2 1.0 Stop Threshold Voltage (Vstop) Operating Frequency (Fosc) Start Threshold Voltage vs. Temp 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Ju nc tion Tempe ratu re (℃) -25 0 25 50 75 100 125 150 Ju nc tion Te mpe ratu re (℃) Stop Threshold Voltage vs. Temp Operating Freqency vs. Temp 1.2 1.0 Maximum Duty Cycle (Dmax) 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Ju nc tion Tempe ratu re (℃) 1. 2 1. 0 FB Source Current (Ifb) 0. 8 0. 6 0. 4 0. 2 0. 0 -25 0 25 50 75 100 125 150 Ju nc tion Tempe rature (℃) Maximum Duty vs. Temp Feedback Source Current vs. Temp 8 FSDM0565R Typical Performance Characteristics (Continued) (These Characteristic Graphs are Normalized at Ta= 25°C) 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Ju nc tion Te mpe ratu re (℃) 1.2 1.0 Shutdown Delay Current (Idelay) 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Ju n c tion T e mpe ra tu re (℃) Shutdown FB Voltage (Vsd) ShutDown Feedback Voltage vs. Temp ShutDown Delay Current vs. Temp 1.2 Over Voltage Protection (Vovp) 1.0 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Junction Temperature(℃) 1.2 FB Burst Mode Enable Voltage (Vfbe) 1.0 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Junction Temperature(℃) Over Voltage Protection vs. Temp Burst Mode Enable Voltage vs. Temp 1.2 Peak Current Limit(Self protection) (Iover) 1.0 0.8 0.6 0.4 0.2 0.0 -50 -25 0 25 50 75 100 125 Ju nc tion Te mpe ratu re (℃) FB Burst Mode Disable Voltage (Vfbd) 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Junction Temperature(℃) Burst Mode Disable Voltage vs. Temp Current Limit vs. Temp 9 FSDM0565R Typical Performance Characteristics (Continued) (These Characteristic Graphs are Normalized at Ta= 25°C) 1.2 1.0 Soft Start Time (Normalized to 25℃) 0.8 0.6 0.4 0.2 0.0 -50 -25 0 25 50 75 100 125 Junction Temperature(℃) Soft Start Time vs.