FSQ0170RNA_07

FSQ0170RNA, FSQ0270RNA, FSQ0370RNA — Green Mode Fairchild Power Switch (FPS™) April 2007 FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Green Mode Fairchild Power Switch (FPS™) Features Internal Avalanche Rugged 700V SenseFET Consumes only 0.8W at 230 VAC & 0.5W Load with Burst-Mode Operation Precision Fixed Operating Frequency, 100kHz Internal Start-up Circuit and Built-in Soft-Start Pulse-by-Pulse Current Limiting and Auto-Restart Mode Over-Voltage Protection (OVP), Overload Protection (OLP), Internal Thermal Shutdown Function (TSD) Under-Voltage Lockout (UVLO) Low Operating Current (3mA) Adjustable Peak Current Limit Description The FSQ0170RNA, FSQ0270RNA, FSQ0370RNA consists of an integrated current mode Pulse Width Modulator (PWM) and an avalanche-rugged 700V Sense FET. It is specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with minimal external components. The integrated PWM controller features include: a fixed-frequency generating oscillator, Under-Voltage Lockout (UVLO) protection, Leading Edge Blanking (LEB), an optimized gate turn-on/ turn-off driver, Thermal Shutdown (TSD) protection, and temperature compensated precision current sources for loop compensation and fault protection circuitry. Compared to a discrete MOSFET and controller or RCC switching converter solution, the FSQ0170RNA, FSQ0270RNA, FSQ0370RNA reduces total 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, as in PC auxiliary power supplies. Applications Auxiliary Power Supply for PC and Server SMPS for VCR, SVR, STB, DVD & DVCD Player, Printer, Facsimile & Scanner Adapter for Camcorder Related Application Notes AN-4134: Design Guidelines for Off-line Forward Converters Using Fairchild Power Switch (FPS™) AN-4137: Design Guidelines for Off-line Flyback Converters Using Fairchild Power Switch (FPS™) AN-4141: Troubleshooting and Design Tips for Fairchild Power Switch (FPS™) Flyback Applications AN-4147: Design Guidelines for RCD Snubber of Flyback AN-4148: Audible Noise Reduction Techniques for FPS™ Applications 8-DIP Ordering Information Product Number FSQ0170RNA FSQ0270RNA FSQ0370RNA Package 8DIP 8DIP 8DIP Marking Code Q0170R Q0270R Q0370R BVDSS 700V 700V 700V fOSC 100kHz 100kHz 100kHz RDS(ON) (MAX.) 11Ω 7.2Ω 4.75Ω FPSTM is a trademark of Fairchild Semiconductor Corporation. © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.2 www.fairchildsemi.com FSQ0170RNA, FSQ0270RNA, FSQ0370RNA — Green Mode Fairchild Power Switch (FPS™) Application Diagram AC IN DC OUT Vstr IPK PWM FB Drain VCC GND FSQ0x70RNA Rev. 1.01 Figure 1. Typical Flyback Application Output Power Table(1) Product FSQ0170RNA FSQ0270RNA FSQ0370RNA 230VAC ±15%(2) Adapter 14W 17W 20W (3) 85–265VAC (4) Open Frame 20W 24W 27W Adapter 9W 11W 13W (3) Open Frame(4) 13W 16W 19W Notes: 1. The maximum output power can be limited by junction temperature. 2. 230 VAC or 100/115 VAC with doubler. 3. Typical continuous power in a non-ventilated enclosed adapter with sufficient drain pattern as a heat sink, at 50°C ambient. 4. Maximum practical continuous power in an open-frame design with sufficient drain pattern as a heat sink, at 50°C ambient. Internal Block Diagram VCC 2 ICH Vstr 5 Drain 6,7,8 8V/12V VBURL/VBURH VCC IDELAY VCC OSC IFB 2.5R VCC good Vref Internal Bias FB 3 IPK 4 R Normal Burst PWM S R Q Q LEB Gate Driver VSD VCC Vovp TSD VCC good S R Q Q Soft-Start FSQ0x70RNA Rev. 1.00 1 GND Figure 2. Internal Block Diagram © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.2 2 www.fairchildsemi.com FSQ0170RNA, FSQ0270RNA, FSQ0370RNA — Green Mode Fairchild Power Switch (FPS™) Pin Configuration GND VCC FB IPK FSQ0x70RNA Rev. 1.00 D D D Vstr 8-DIP Figure 3. Pin Configuration (Top View) Pin Definitions Pin # 1 Name GND Description Ground. SenseFET source terminal on primary side and internal control ground. Power Supply. Positive supply voltage input. Although connected to an auxiliary transformer winding, current is supplied from pin 5 (Vstr) via an internal switch during start-up, see Figure 2. It is not until VCC reaches the UVLO upper threshold (12V) that the internal start-up switch opens and device power is supplied via the auxiliary transformer winding. Feedback. The feedback voltage pin is the non-inverting input to the PWM comparator. It has a 0.9mA current source connected internally while a capacitor and opto-coupler are typically connected externally. A feedback voltage of 6V triggers overload protection (OLP). There is a time delay while charging external capacitor CFB from 3V to 6V using an internal 5µA current source. This time delay prevents false triggering under transient conditions, but still allows the protection mechanism to operate under true overload conditions. Peak Current Limit. This pin adjusts the peak current limit of the SenseFET. The 0.9mA feedback current source is diverted to the parallel combination of an internal 2.8kΩ resistor and any external resistor to GND on this pin. This determines the peak current limit. If this pin is tied to VCC or left floating, the typical peak current limit is 0.8A (FSQ0170RNA), 0.9A (FSQ0270RNA), or 1.1A (FSQ0370RNA). Start-up. This pin connects to the rectified AC line voltage source. At start-up, the internal switch supplies internal bias and charges an external storage capacitor placed between the VCC pin and ground. Once the VCC reaches 12V, the internal switch is opened. SenseFET drain. High-voltage power SenseFET drain connection. SenseFET drain. High-voltage power SenseFET drain connection. SenseFET drain. High-voltage power SenseFET drain connection. 2 VCC 3 FB 4 IPK 5 6 7 8 Vstr Drain Drain Drain © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.2 3 www.fairchildsemi.com FSQ0170RNA, FSQ0270RNA, FSQ0370RNA — Green Mode Fairchild Power Switch (FPS™) 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. Symbol VDRAIN VSTR IDM Drain Pin Voltage Vstr Pin Voltage Characteristic Value 700 700 FSQ0170RNA 4 8 12 50 140 230 20 -0.3 to VCC 1.5 Internally limited -25 to +85 -55 to +150 FSQ0270RNA FSQ0370RNA FSQ0170RNA Unit V V A Drain Current Pulsed(5) EAS VCC VFB PD TJ TA TSTG Single Pulsed Avalanche Supply Voltage Feedback Voltage Range Total Power Dissipation Energy(6) FSQ0270RNA FSQ0370RNA mJ V V W °C °C °C Operating Junction Temperature Operating Ambient Temperature Storage Temperature Notes: 5. Non-repetitive rating: Pulse width is limited by maximum junction temperature. 6. L = 51mH, starting TJ = 25°C. Thermal Impedance TA = 25°C, unless otherwise specified. All items are tested with the standards JESD 51-2 and 51-10 (DIP). Symbol θJA θJC θJT Parameter Junction-to-Ambient Thermal Junction-to-Case Thermal Resistance(7) Resistance(8) Value 80 20 35 Unit °C/W °C/W °C/W Junction-to-Top Thermal Resistance(9) Notes: 7. Free standing with no heatsink; without copper clad. (Measurement Condition - Just before junction temperature TJ enters into OTP.) 8. Measured on the DRAIN pin close to plastic interface. 9. Measured on the PKG top surface. © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.2 4 www.fairchildsemi.com FSQ0170RNA, FSQ0270RNA, FSQ0370RNA — Green Mode Fairchild Power Switch (FPS™) Electrical Characteristics TA = 25°C unless otherwise specified. Symbol SenseFET Section IDSS (10) Parameter Condition VDS = 700V, VGS = 0V Min. Typ. Max. 50 200 Unit Zero-Gate-Voltage Drain Current Drain-Source On-State Resistance(11) FSQ0170RNA FSQ0270RNA FSQ0370RNA FSQ0170RNA FSQ0270RNA FSQ0370RNA FSQ0170RNA VDS = 560V, VGS = 0V, TC = 125°C 8.8 VGS = 10V, ID = 0.5A 6.0 4.0 250 550 315 VGS = 0V, VDS = 25V, f = 1MHz 25 38 47 10 17 9 12 20 11.2 4 15 VDS = 350V, ID = 1.0A 34 30 55 28.2 10 25 32 92 100 ±5 55 0 VFB = GND VFB = GND VFB = GND VFB = 4V 11 7 0.7 60 0 12 8 0.9 10 μA 11 7.2 4.75 Ω RDS(ON) CISS Input Capacitance COSS Output Capacitance FSQ0270RNA FSQ0370RNA FSQ0170RNA FSQ0270RNA FSQ0370RNA FSQ0170RNA FSQ0270RNA FSQ0370RNA FSQ0170RNA pF CRSS Reverse Transfer Capacitance td(on) Turn-On Delay Time tr Rise Time FSQ0270RNA FSQ0370RNA FSQ0170RNA ns td(off) Turn-Off Delay Time FSQ0270RNA FSQ0370RNA FSQ0170RNA tf Fall Time FSQ0270RNA FSQ0370RNA Control Section fOSC ΔfOSC DMAX DMIN VSTART VSTOP IFB tS/S Switching Frequency Switching Frequency Variation Maximum Duty Cycle Minimum Duty Cycle UVLO Threshold Voltage Feedback Source Current Internal Soft-Start Time(10) (10) 108 ±10 65 0 13 9 1.1 KHz % % % V mA ms -25°C ≤ TA ≤ 85°C Measured at 0.1 x VDS © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.2 5 www.fairchildsemi.com FSQ0170RNA, FSQ0270RNA, FSQ0370RNA — Green Mode Fairchild Power Switch (FPS™) Electrical Characteristics (Continued) TA = 25°C unless otherwise specified. Symbol Burst-Mode Section VBURH VBURL VBUR(HYS) Protection Section Parameter Condition Min. 0.5 Typ. 0.6 0.4 200 0.80 0.90 1.10 500 140 6.0 19 5.0 Max. 0.7 0.5 300 0.90 1.01 1.23 Unit V V mV Burst-Mode Voltage TJ = 25°C 0.3 100 FSQ0170RNA ILIM tCLD TSD VSD VOVP IDELAY tLEB Peak Current Limit FSQ0270RNA FSQ0370RNA Current Limit Delay Time(10) Thermal Shutdown Temperature Shutdown Feedback Voltage Over-Voltage Protection Shutdown Delay Current Leading Edge Blanking Time Operating Supply Current (control part only) Start-Up Charging Current Vstr Supply Voltage (10) (10) di/dt = 170mA/µs di/dt = 200mA/µs di/dt = 240mA/µs 0.70 0.79 0.97 125 5.5 18 A ns °C 6.5 6.5 V V μA ns VFB = 4V 3.5 200 Total Device Section IOP ICH VSTR VCC = 14V VCC = 0V VCC = 0V 1 0.70 3 0.85 24 5 1.00 mA mA V Notes: 10. These parameters, although guaranteed, are not 100% tested in production. 11. Pulse test: Pulse width ≤ 300µs, duty ≤ 2%. © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.2 6 www.fairchildsemi.com FSQ0170RNA, FSQ0270RNA, FSQ0370RNA — Green Mode Fairchild Power Switch (FPS™) Typical Performance Characteristics (Control Part) These characteristic graphs are normalized at TA= 25°C. 1.2 1.0 1.2 1.0 Normalized 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Normalized 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Temperature [°C] Temperature [°C] Figure 4. Operating Frequency (fOSC) vs. TA Figure 5. Over-Voltage Protection (VOVP) vs. TA 1.2 1.0 1.2 1.0 Normalized 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Normalized 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Temperature [°C] Temperature [°C] Figure 6. Maximum Duty Cycle (DMAX) vs. TA Figure 7. Operating Supply Current (IOP) vs. TA 1.2 1.0 1.2 1.0 Normalized Normalized 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Temperature [°C] Temperature [°C] Figure 8. Start Threshold Voltage (VSTART) vs. TA © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.2 7 Figure 9. Stop Threshold Voltage (VSTOP) vs. TA www.fairchildsemi.com FSQ0170RNA, FSQ0270RNA, FSQ0370RNA — Green Mode Fairchild Power Switch (FPS™) Typical Performance Characteristics (Continued) These characteristic graphs are normalized at TA= 25°C. 1.2 1.0 1.2 1.0 Normalized 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Normalized 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Temperature [°C] Temperature [°C] Figure 10. Feedback Source Current (IFB) vs. TA Figure 11. Start-Up Charging Current (ICH) vs. TA 1.2 1.0 Normalized 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Temperature [°C] Figure 12. Peak Current Limit (ILIM) vs. TA © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.2 8 www.fairchildsemi.com FSQ0170RNA, FSQ0270RNA, FSQ0370RNA — Green Mode Fairchild Power Switch (FPS™) Functional Description 1. Startup: In previous generations of Fairchild Power Switches (FPS™), the Vstr pin required an external resistor to the DC input voltage line. In this generation, the startup resistor is replaced by an internal highvoltage current source and a switch that shuts off 10ms after the supply voltage, VCC, goes above 12V. The source turns back on if VCC drops below 8V. VIN,dc ISTR Vstr Vcc Vcc 78% at 115 VAC and 230 VAC input) Low standby mode power consumption (< 0.8W at 230 VAC input and 0.5W load) Enhanced system reliability through various protection functions Internal soft-start (10ms) Line UVLO function can be achieved using external component Key Design Notes The delay time for overload protection is designed to be about 30ms with C8 of 47nF. If faster/slower triggering of OLP is required, C8 can be changed to a smaller/larger value (e.g. 100nF for about 60ms). ZP1, DL1, RL1, RL2, RL3, RL4, RL5, RL7, QL1, QL2, and CL9 build a Line Under-Voltage Lockout block (UVLO). The Zener voltage of ZP1 determines the input voltage that makes FPS turn on. RL5 and DL1 provide a reference voltage from VCC. If the input voltage divided by RL1, RL2, and RL4 is lower than the Zener voltage of DL1, QL1 and QL2 turn on and pull down VFB to ground. An evaluation board and corresponding test report can be provided. 1. Schematic C1 2.2nF AC250V L1 330μH RS1 9 CS1 1.5nF ZDS1 P6KE180A C10 1nF 250V ZP1 1N4762 T1 EE2229 1 6,7 3 9, 10 L2 1μH D1 SB540 R3 560 1 C4 1000μF 16V C9 1000μF 16V U1A FOD817A 2 3 C6 47nF 1 2 R9 10k R4 100 J4 0 R5 1.25k 1% CON2 1 2 Output R6 CON1 2.4 1W 1 2 3 Input D2 D3 1N4007 1N4007 C2 22μF 400V D4 D5 1N4007 1N4007 R2 4.7k C3 22μF 400V R14 30 DS1 1N4007 R8 open C5 470μF 10V L3 0 RL1 1M DL1 1N5233B RL5 30k 8765 U3 FSQ0270RNA J1 FB 4 D6 R10 1N4007 2 5 U2 TL431A R11 1.2k 1% RL2 1M QL1 KSP2907A J3 open GND Drain VCC Drain FB Drain Vstr IPK 1234 ZR1 80 RL4 120k C7 47μF 25V RL3 1k CL9 10μF 50V J2 0 4 ZD2 C8 open 47nF R13 open ZD1 1N4745 R12 open RL7 40k 3 U1B QL2 KSP2222A FOD817A FSQ0x70RNA Rev. 1.12 Figure 21. Demo Circuit © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.2 12 www.fairchildsemi.com FSQ0170RNA, FSQ0270RNA, FSQ0370RNA — Green Mode Fairchild Power Switch (FPS™) 2. Transformer 1 2 6, 7 N EE2229 9, 10 Np/2 Np/2 3 Na 4 5 FSQ0x70RNA Rev. 1.00 5V Figure 22. Transformer Schematic Diagram 3. Winding Specification Pin (S → F) Np/2 Na N5V Np/2 3→2 4→5 6, 7 → 9, 10 2→1 Insulation: Polyester Tape t = 0.025mm, 1 Layers 0.25ϕ × 2 0.65ϕ × 2 0.3ϕ × 1 22 8 72 Solenoid winding Solenoid winding Solenoid winding Insulation: Polyester Tape t = 0.025mm, 2 Layers Insulation: Polyester Tape t = 0.025mm, 2 Layers Insulation: Polyester Tape t = 0.025mm, 2 Layers Wire 0.3ϕ × 1 Turns 72 Winding Method Solenoid winding 4. Electrical Characteristics Pin Inductance Leakage 1–3 1–3 Specification 1.20mH ± 5% < 30µH Max Remark 100kHz, 1V Short all other pins 5. Core & Bobbin Core: EE2229 (Material: PL-7, Ae = 35.7 mm2) Bobbin: BE2229 © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.2 13 www.fairchildsemi.com FSQ0170RNA, FSQ0270RNA, FSQ0370RNA — Green Mode Fairchild Power Switch (FPS™) 6. Demo Circuit Part List Part Number C6, C8 C1 C10 CS1 C2, C3 C4, C9 C5 C7 CL9 L1 L2 R6 J1, J2, J4, L3 R2 R3 R4 R5 R11 R9 R10 R14 RL3 RL1, RL2 RL4 RL5 RL7 RS1 ZR1 U1 U2 U3 QL1 QL2 D2, D3, D4, D5, D6, DS1 D1 ZD1 DL1 ZP1 ZDS1 Value 47nF 2.2nF (1KV) 1nF (200V) 1.5nF (50V) 22µF (400V) 1000µF (16V) 470µF (10V) 47µF (25V) 10µF (50V) 330µH 1µH 2.4 (1W) 0 4.7kΩ 560Ω 100Ω 1.25kΩ 1.2kΩ 10kΩ 2Ω 30Ω 1kΩ 1MΩ 120kΩ 30kΩ 40kΩ 9Ω 80Ω FOD817A TL431 FSQ0270RNA 2N2907 2N2222 1N4007 SB540 1N4745 1N5233 82V (1W) P6KE180A Quantity 2 1 1 1 2 2 1 1 1 1 1 1 4 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 6 1 1 1 1 1 Description (Manufacturer) Ceramic Capacitor AC Ceramic Capacitor(X1 & Y1) Mylar Capacitor Ceramic Capacitor Low Impedance Electrolytic Capacitor KMX series Low ESR Electrolytic Capacitor NXC series Low ESR Electrolytic Capacitor NXC series General Electrolytic Capacitor General Electrolytic Capacitor Inductor Inductor Fusible Resistor Jumper Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor IC (Fairchild Semiconductor) IC (Fairchild Semiconductor) IC (Fairchild Semiconductor) IC (Fairchild Semiconductor) IC (Fairchild Semiconductor) Diode (Fairchild Semiconductor) Schottky Diode (Fairchild Semiconductor) Zener Diode (Fairchild Semiconductor) Zener Diode (Fairchild Semiconductor) Zener Diode (Fairchild Semiconductor) TVS (Fairchild Semiconductor) © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.2 14 www.fairchildsemi.com FSQ0170RNA, FSQ0270RNA, FSQ0370RNA — Green Mode Fairchild Power Switch (FPS™) 7. Layout Figure 23. Top Image of PCB Figure 24. Bottom Image of PCB © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.2 15 www.fairchildsemi.com FSQ0170RNA, FSQ0270RNA, FSQ0370RNA — Green Mode Fairchild Power Switch (FPS™) Package Dimensions 8-DIP Dimensions are in millimeters unless otherwise noted. 1.524 ±0.10 #1 #8 9.20 ±0.20 0.362 ±0.008 9.60 MAX 0.378 #4 #5 2.54 0.100 5.08 MAX 0.200 7.62 0.300 3.40 ±0.20 0.134 ±0.008 3.30 ±0.30 0.130 ±0.012 0.33 0.013 MIN 0.25 –0.05 0~15° +0.10 0.010 –0.002 September 1999, Rev B 8dip_dim.pdf +0.004 Figure 25. 8-Lead Dual In-Line Package (DIP) © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.2 16 0.018 ±0.004 www.fairchildsemi.com 0.060 ±0.004 0.46 ±0.10 6.40 ±0.20 0.252 ±0.008 ( 0.79 ) 0.031 FSQ0170RNA, FSQ0270RNA, FSQ0370RNA — Green Mode Fairchild Power Switch (FPS™) © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.2 17 www.fairchildsemi.com