(FSDH0x70RNB) Green Mode Fairchild Power Switch

www.DataSheet4U.com FSDH0170RNB/FSDH0270RNB/FSDH0370RNB Green Mode Fairchild Power Switch (FPS™) March 2006 FSDH0170RNB/FSDH0270RNB/FSDH0370RNB Green Mode Fairchild Power Switch (FPS™) Features Internal Avalanche Rugged 700V Sense FET Consumes only 0.8W at 230 VAC & 0.5W load with Burst-Mode Operation Frequency Modulation for EMI Reduction 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), Over Load Protection (OLP), Internal Thermal Shutdown Function (TSD) Under Voltage Lockout (UVLO) Low Operating Current (3mA) Adjustable Peak Current Limit Description The FSDH0170RNB/FSDH0270RNB/FSDH0370RNB 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 oscillator with frequency modulation for reduced EMI, Under Voltage Lock Out (UVLO) protection, Leading Edge Blanking (LEB), an optimized gate turn-on/ turn-off driver, Thermal Shut Down (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 FSDH0170RNB/ FSDH0270RNB/FSDH0370RNB 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 SMPS for Printer, Facsimile & Scanner Adapter for Camcorder Related Application Notes AN-4137, AN-4141, AN-4147 (Flyback) AN-4134 (Forward) Ordering Information Product Number FSDH0170RNB FSDH0270RNB FSDH0370RNB Package 8DIP 8DIP 8DIP Marking Code DH0170R DH0270R DH0370R BVDSS 700V 700V 700V fOSC 100KHz 100KHz 100KHz RDS(ON) (MAX.) 11Ω 7.2Ω 4.75Ω ©2006 Fairchild Semiconductor Corporation 1 www.fairchildsemi.com FSDH0170RNB/FSDH0270RNB/FSDH0370RNB Rev. 1.0.2 www.DataSheet4U.com FSDH0170RNB/FSDH0270RNB/FSDH0370RNB Green Mode Fairchild Power Switch (FPS™) Typical Circuit AC IN DC OUT Vstr Ipk PWM Vfb Drain Vcc Source Figure 1. Typical Flyback Application Output Power Table(4) 230VAC ±15%(3) Product FSDH0170RNB FSDH0270RNB FSDH0370RNB 85–265VAC Adapter(1) 9W 11W 13W Adapter(1) 14W 17W 20W Open Frame(2) Open Frame(2) 13W 16W 19W 20W 24W 27W Notes: 1. Typical continuous power in a non-ventilated enclosed adapter with sufficient drain pattern as a heat sinker, at 50°C ambient. 2. Maximum practical continuous power in an open frame design with sufficient drain pattern as a heat sinker, at 50°C ambient. 3. 230 VAC or 100/115 VAC with doubler. 4. The maximum output power can be limited by junction temperature. Internal Block Diagram Vcc 2 Vstr 5 D rain 6,7,8 IC H 8V/12V V BU R L /V BU RH Vcc I DELA Y Vcc OSC I FB Vcc good Freq. M odulation Vref Internal Bias Vfb 3 N orm al PW M Burst S R Q Q 2.5R Ipk 4 R G ate driver LEB V SD Vcc S Q Q 1 GND Vovp Vcc good TSD R Soft Start Figure 2. Functional Block Diagram of FSDH0170RNB/FSDH0270RNB/FSDH0370RNB FSDH0170RNB/FSDH0270RNB/FSDH0370RNB Rev. 1.0.2 2 www.fairchildsemi.com www.DataSheet4U.com FSDH0170RNB/FSDH0270RNB/FSDH0370RNB Green Mode Fairchild Power Switch (FPS™) Pin Configuration 8DIP GND 1 Vcc 2 Vfb 3 Ipk 4 8 Drain 7 Drain 6 Drain 5 Vstr Figure 3. Pin Configuration (Top View) Pin Definitions Pin Number 1 2 Pin Name GND Vcc Pin Function Description Sense FET source terminal on primary side and internal control ground. Positive supply voltage input. Although connected to an auxiliary transformer winding, current is supplied from pin 5 (Vstr) via an internal switch during startup (see Internal Block Diagram Section). 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. 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 optocoupler 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. This pin adjusts the peak current limit of the Sense FET. 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 will be 0.8A (FSDH0170RNB), 0.9A (FSDH0270RNB), or 1.1A (FSDH0370RNB). 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. The drain pins are designed to connect directly to the primary lead of the transformer and are capable of switching a maximum of 700V. Minimizing the length of the trace connecting these pins to the transformer will decrease leakage inductance. 3 Vfb 4 Ipk 5 Vstr 6, 7, 8 Drain FSDH0170RNB/FSDH0270RNB/FSDH0370RNB Rev. 1.0.2 3 www.fairchildsemi.com www.DataSheet4U.com FSDH0170RNB/FSDH0270RNB/FSDH0370RNB Green Mode Fairchild Power Switch (FPS™) Absolute Maximum Ratings (TA = 25°C, unless otherwise specified) Symbol VDRAIN VSTR IDM Drain Pin Voltage Vstr Pin Voltage Drain Current Pulsed 5 Parameter Value 700 700 FSDH0170RNB FSDH0270RNB FSDH0370RNB 4 8 12 50 140 230 20 -0.3 to VCC 1.5 Internally limited -25 to +85 -55 to +150 Unit V V A A A mJ mJ mJ V V W °C °C °C EAS Single Pulsed Avalanche Energy6 FSDH0170RNB FSDH0270RNB FSDH0370RNB VCC VFB PD TJ TA TSTG Supply Voltage Feedback Voltage Range Total Power Dissipation Operating Junction Temperature Operating Ambient Temperature Storage Temperature Thermal Impedance (TA = 25°C, unless otherwise specified) Symbol 8 DIP θJA θJC ψJT Parameter Junction-to-Ambient Thermal7 Junction-to-Case Thermal Junction-to-Top Thermal 9 8 Value 80 20 35 Unit °C/W °C/W °C/W All items are tested with the standards JESD 51-2 and 51-10 (DIP). Notes: 5. Non-repetitive rating: Pulse width is limited by maximum junction temperature. 6. L = 51mH, starting Tj = 25°C. 7. Free standing with no heatsink; Without copper clad. 8. Measured on the DRAIN pin close to plastic interface. 9. Measured on the PKG top surface. FSDH0170RNB/FSDH0270RNB/FSDH0370RNB Rev. 1.0.2 4 www.fairchildsemi.com www.DataSheet4U.com FSDH0170RNB/FSDH0270RNB/FSDH0370RNB Green Mode Fairchild Power Switch (FPS™) Electrical Characteristics (TA = 25°C unless otherwise specified) Symbol Sense FET Section IDSS 11 Parameter Zero-Gate-Voltage Drain Current Condition VDS = 700V, VGS = 0V VDS = 560V, VGS = 0V, TC = 125°C Min. – – – – – Typ. – – 8.8 6.0 4.0 250 550 315 25 38 47 10 17 9 12 20 11.2 4 15 34 30 55 28.2 10 25 32 100 ±3 ±5 67 0 12 8 0.9 10 Max. 50 200 11 7.2 4.75 – – – – – – – – – – – – – – – – – – – – – 108 ±4 ±10 72 0 13 9 1.1 – Unit μA RDS(ON) Drain-Source On-State Resistance10 Input Capacitance FSDH0170RNB FSDH0270RNB FSDH0370RNB FSDH0170RNB FSDH0270RNB FSDH0370RNB VGS = 10V, ID = 0.5A Ω CISS VGS = 0V, VDS = 25V, f = 1MHz – – – – – – – – – pF COSS Output Capacitance FSDH0170RNB FSDH0270RNB FSDH0370RNB CRSS Reverse Transfer Capacitance FSDH0170RNB FSDH0270RNB FSDH0370RNB FSDH0170RNB FSDH0270RNB FSDH0370RNB VDS = 350V, ID = 1.0A td(on) Turn-On Delay Time – – – – – – – – – – – – 92 ±2 ns tr Rise Time FSDH0170RNB FSDH0270RNB FSDH0370RNB td(off) Turn-Off Delay Time FSDH0170RNB FSDH0270RNB FSDH0370RNB tf Fall Time FSDH0170RNB FSDH0270RNB FSDH0370RNB Control Section fOSC ΔfMOD ΔfOSC DMAX DMIN VSTART VSTOP IFB tS/S Feedback Source Current Internal Soft Start Time11 Switching Frequency Switching Frequency Modulation Switching Frequency Variation11 Maximum Duty Cycle Minimum Duty Cycle UVLO Threshold Voltage VFB = GND VFB = GND VFB = GND VFB = 4V -25°C ≤ TA ≤ 85°C Measured @0.1 x Vds KHz KHz % % % V mA ms – 62 0 11 7 0.7 – FSDH0170RNB/FSDH0270RNB/FSDH0370RNB Rev. 1.0.2 5 www.fairchildsemi.com www.DataSheet4U.com FSDH0170RNB/FSDH0270RNB/FSDH0370RNB Green Mode Fairchild Power Switch (FPS™) Electrical Characteristics (Continued) (TA = 25°C unless otherwise specified) Symbol Burst Mode Section VBURH VBURL VBUR(HYS) Parameter Burst Mode Voltage Condition Tj = 25°C Min. 0.5 0.3 100 Typ. 0.6 0.4 200 0.80 0.90 1.10 500 140 6.0 19 5.0 – 3 0.85 24 Max. 0.7 0.5 300 0.90 1.01 1.23 – – 6.5 – 6.5 – 5 1.0 – Unit V V mV A Protection Section ILIM Peak Current Limit FSDH0170RNB FSDH0270RNB FSDH0370RNB tCLD TSD VSD VOVP IDELAY tLEB IOP ICH VSTR Current Limit Delay Thermal Shutdown Time11 Temperature11 di/dt = 170mA/µs di/dt = 200mA/µs di/dt = 240mA/µs 0.70 0.79 0.97 – 125 5.5 18 VFB = 4V 11 ns °C V V μA ns mA mA V 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 3.5 200 Total Device Section VCC = 14V VCC = 0V VCC = 0V 1 0.7 – Notes: 10. Pulse test : Pulse width ≤ 300µs, duty ≤ 2% 11. These parameters, although guaranteed, are not 100% t