2S0765

KA2S0765 FAIRCHILD | Alldatasheet

Document overview

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• PDF pages: 10

Technical content

Features

• Wide operatimg frequency range up to (150kHz)
• Pulse by pulse over current limiting
• Over load protection
• Over voltage protecton (Min. 23V)
• Internal thermal shutdown function
• Under voltage lockout
• Internal high voltage sense FET
• External sync terminal
• Latch up Mode

Description

The Fairchild Power Switch(FPS) product family is specially designed for an off line SMPS with minimal external components. The Fairchild Power Switch(FPS) consist of high voltage power SenseFET and current mode PWM controller IC. control IC features a trimmed oscillator, under voltage lock-out, leading edge blanking, optimized gate turn-on/turn-off driver, thermal shut down protection, over voltage protection, temperature compensated precision current sources for loop compensation and fault protection circuit. compared to discrete MOSFET and controller or R CC switching converter solution, a Fairchild Power Switch(FPS) can reduce total component count, design size, weight and at the same time increase & efficiency, productivity, and system reliability. It has a basic platform well suited for cost-effective Monitor power supply. TO-3P-5L Internal Block Diagram #3 VCC 32V 2µA 2.5R 1R1mA 0.1V OVER VOLTAGE S/D 7.5V 25V Thermal S/D S R Q Power on reset − L.E.B S R Q OSC Vref Internal bias Good logic SFET #1 DRAIN #2 GND #4 FB #5 Sync 6.4V KA2S0765 Fairchild Power Switch(FPS)

Note: 1. Tj=25 °C to 150° 2. Repetitive rating: Pulse width limited by maximum junction temperature 3. L=24mH, V DD=50V, RG=25Ω, starting Tj=25 °C Characteristic Symbol Value Unit Maximum Drain voltage (1) VD,MAX 650 V Drain Gate voltage (RGS=1MΩ ) VDGR 650 V Gate source (GND) voltage VGS ±30 V Drain current pulsed (2) IDM 28.0 A DC Single pulsed avalanche energy (3) EAS 570 mJ Continuous drain current (TC=25°C) ID 7.0 A DC Continuous drain current (TC=100°C) ID 5.6 A DC Maximum Supply voltage VCC,MAX 30 V Input voltage range VFB −0.3 to VSD V Total power dissipation PD 140 W Derating 1.11 W/ °C Operating ambient temperature TA −25 to +85 °C Storage temperature TSTG −55 to +150 °C

Electrical Characteristics (SFET part) (Ta = 25°C unless otherwise specified) Note: Pulse test: Pulse width < 300µS, duty cycle < 2% Characteristic Symbol Test condition Min. Typ. Max. Unit Drain source breakdown voltage BV DSS VGS=0V, ID=50µA 650 - - V Zero gate voltage drain current I DSS VDS=Max., Rating, VGS=0V -- 5 0 µA VDS=0.8Max., Rating, VGS=0V, TC=125°C - - 200 mA Static drain source on resistance (note) RDS(ON) VGS=10V, ID=4.0A - 1.25 1.6 W Forward transconductance (note) gfs V DS=15V, ID=4.0A 3.0 - - S Input capacitance Ciss VGS=0V, VDS=25V, f=1MHz - 1600 - pFOutput capacitance Coss - 310 - Reverse transfer capacitance Crss - 120 - Turn on delay time t d(on) VDD=0.5BVDSS, ID=7.0A (MOSFET switching time are essentially independent of operating temperature) -2 5- nS Rise time tr - 55 - Turn off delay time t d(off) -8 0- Fall time tf - 50 - Total gate charge (gate-source+gate-drain) Qg VGS=10V, ID=7.0A, VDS=0.5BVDSS (MOSFET switching time are essentially independent of operating temperature) -- 7 2 nCGate source charge Qgs - 9.3 - Gate drain (Miller) charge Qgd - 29.3 - S 1 R----=

Electrical Charcteristics (CONTROL part) (Ta = 25°C unless otherwise specified) Note: 1. These parameters, although guaranteed, are not 100% tested in production 2. These parameters, although guaranteed, are tested in EDS(water test) process 3. The amplitude of the sync. pulse is recommended to be between 2V and 3V for stable sync. function. Characteristic Symbol Test condition Min. Typ. Max. Unit UVLO SECTION Start threshold voltage V START -1 4 1 5 1 6 V Stop threshold voltage V STOP After turn on 9 10 11 V OSCILLATOR SECTION Initial accuracy F OSC Ta=25°C1 8 2 0 2 2 k H z Frequency change with temperature (2) ∆F/∆T −25°C ≤ Ta ≤ +85°C- ±5 ±10 % Maximum duty cycle D max -9 2 9 5 9 8 % FEEDBACK SECTION Feedback source current I FB Ta=25°C, Vfb=GND 0.7 0.9 1.1 mA Shutdown Feedback voltage V SD -6 . 9 7 . 5 8 . 1 V Shutdown delay current I delay Ta=25°C, 5V ≤ Vfb ≤ VSD 1.4 1.8 2.2 µA SYNC. & SOFT START SECTION Soft start voltage V SS VFB=2V 4.7 5.0 5.3 V Soft start current I SS Sync & S/S=GND 0.8 1.0 1.2 mA Sync threshold voltage(3) VSYTH Vfb=5V 6.0 6.4 6.8 V REFERENCE SECTION Output voltage (1) Vref Ta=25 °C 4.80 5.00 5.20 V Temperature Stability (1)(2) Vref/∆T −25°C ≤ Ta ≤ +85°C- 0 . 3 0 . 6 m V / °C CURRENT LIMIT (SELF-PROTECTION) SECTION Peak Current Limit I OVER KA2S0765 4.40 5.00 5.60 A PROTECTION SECTION Thermal shutdown temperature (Tj) (1) TSD - 140 160 - °C Over voltage protection voltage V OVP -2 3 2 5 2 8 V TOTAL DEVICE SECTION Start Up current I START VCC=14V 0.1 0.3 0.55 mA Operating supply current (control part only) IOP Ta=25°C 6 12 18 mA VCC zener voltage V Z ICC=20mA 30 32.5 35 V

Figure 13. Soft Start Voltage Figure 14. Static Drain-Source on Resistance

Package Dimensions (Continued) TO-3P-5L (Forming)

10/17/01 0.0m 001 Stock#DSxxxxxxxx  2001 Fairchild Semiconductor Corporation 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 THE PRESIDENT 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. www.fairchildsemi.com 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.

Ordering Information

TU : Non Forming Type YDTU : Forming Type Product Number Package Rating Operating Temperature KA2S0765-TU TO-3P-5L 650V,7A -25 °C to +85°C KA2S0765-YDTU TO-3P-5L(Forming)