KA1M0680B FAIRCHILD | Alldatasheet

Document overview

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Technical content

Features

  • Precision fixed operating frequency
  • KA1M0680B,KA1M0680RB (67KHz)
  • KA1H0680B,KA1H0680RFB (100KHz)
  • Pulse by pulse over current limiting
  • Over load protection
  • Over voltage protection (Min. 23V)
  • Internal thermal shutdown function
  • Under voltage lockout
  • Internal high voltage sense FET
  • Latch up mode (KA1M0680B,KA1H0680B)
  • Auto restart (KA1M0680RB,KA1H0680RFB)
  • Soft start

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. PWM controller features integrated fixed 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 design in either a flyback converter or a forward converter. TO-3PF-5L TO-3P-5L 1 1 Internal Block Diagram #3 VCC 32V 5µA 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 Soft Start KA1M0680B/KA1M0680RB/ KA1H0680B/KA1H0680RFB Fairchild Power Switch(FPS)

KA1M0680B/KA1M0680RB/KA1H0680B/KA1H0680RFB Absolute Maximum Ratings Notes: 1. Tj=25 °C to 150°C 2. Repetitive rating: Pulse width limited by maximum junction temperature 3. L=24mH, V DD=50V, RG=25Ω , starting Tj=25°C 4. L=13 µH, starting Tj=25°C Parameter Symbol Value Unit Maximum Drain voltage (1) VD,MAX 800 V Drain Gate voltage (RGS=1MΩ )V DGR 800 V Gate source (GND) voltage V GS ±30 V Drain current pulsed (2) IDM 24.0 A DC Single pulsed avalanche energy (3) EAS 455 mJ Avalanche current (4) IAS 16 A Continuous drain current (TC=25°C) I D 6.0 A DC Continuous drain current (TC=100°C) I D 4.0 A DC Maximum Supply voltage V CC,MAX 30 V Input voltage range V FB −0.3 to VSD V Total power dissipation PD 150 W Derating 1.21 W/ °C Operating ambient temperature T A −25 to +85 °C Storage temperature T STG −55 to +150 °C

KA1M0680B/KA1M0680RB/KA1H0680B/KA1H0680RFB Electrical Characteristics (SFET part) (Ta=25°C unless otherwise specified) Note: Pulse test: Pulse width ≤ 300µS, duty cycle ≤ 2% Parameter Symbol Condition Min. Typ. Max. Unit Drain source breakdown voltage BV DSS VGS=0V, ID=50µA 800 - - 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 µA Static drain source on resistance (note) RDS(ON) VGS=10V, ID=4.0A - 1.6 2.0 Ω Forward transconductance (note) gfs V DS=15V, ID=4.0A 1.5 2.5 - S Input capacitance Ciss VGS=0V, VDS=25V, f=1MHz - 1600 - pFOutput capacitance Coss - 140 - Reverse transfer capacitance Crss - 42 - Turn on delay time t d(on) VDD=0.5BVDSS, ID=6.0A (MOSFET switching time are essentially independent of operating temperature) -6 0- nS Rise time tr - 150 - Turn off delay time t d(off) - 300 - Fall time tf - 130 - Total gate charge (gate-source+gate-drain) Qg VGS=10V, ID=6.0A, VDS=0.5BVDSS (MOSFET switching time are essentially independent of operating temperature) -7 0- nCGate source charge Qgs - 16 - Gate drain (Miller) charge Qgd - 27 - S 1 R----=

KA1M0680B/KA1M0680RB/KA1H0680B/KA1H0680RFB Electrical Characteristics (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 (wafer test) process Parameter Symbol Condition Min. Typ. Max. Unit UVLO SECTION Start threshold voltage V START - 1 41 51 6 V Stop threshold voltage V STOP After turn on 9 10 11 V OSCILLATOR SECTION Initial accuracy F OSC KA1M0680B 61 67 73 kHzKA1M0680RB 61 67 73 KA1H0680B 90 100 110 KA1H0680RFB 90 100 110 Frequency change with temperature (2) ∆F/∆T −25°C ≤ Ta ≤ +85°C- ±5 ±10 % Maximum duty cycle Dmax KA1M0680B 74 77 80 %KA1M0680RB 74 77 80 KA1H0680B 64 67 70 KA1H0680RFB 64 67 70 FEEDBACK SECTION Feedback source current I FB Ta=25°C, 0V ≤ Vfb ≤ 3V 0.7 0.9 1.1 mA Shutdown Feedback voltage V SD -6 . 9 7 . 5 8 . 1 V Shutdown delay current Idelay Ta=25 °C, 5V ≤ Vfb ≤ VSD 4.0 5.0 6.0 µA 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 REFERENCE SECTION Output voltage (1) Vref Ta=25 °C 4 . 8 05 . 0 05 . 2 0 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 Max. inductor current 3.52 4.00 4.48 A PROTECTION SECTION Thermal shutdown temperature (Tj) (1) TSD - 140 160 - °C Over voltage protection voltage V OVP - 2 32 52 8 V TOTAL DEVICE SECTION Start Up current I START VCC=14V 0.1 0.3 0.45 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

KA1M0680B/KA1M0680RB/KA1H0680B/KA1H0680RFB Package Dimensions TO-3P-5L

KA1M0680B/KA1M0680RB/KA1H0680B/KA1H0680RFB Package Dimensions (Continued) TO-3P-5L (Forming)

KA1M0680B/KA1M0680RB/KA1H0680B/KA1H0680RFB Package Dimensions (Continued) TO-3PF-5L

KA1M0680B/KA1M0680RB/KA1H0680B/KA1H0680RFB Package Dimensions (Continued) TO-3PF-5L(Forming)

KA1M0680B/KA1M0680RB/KA1H0680B/KA1H0680RFB 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 Fosc Latch/Auto KA1M0680B-TU TO-3P-5L 800V, 6A 67kHz Latch up mode KA1M0680B-YDTU TO-3P-5L(Forming) KA1M0680RB-TU TO-3P-5L 800V, 6A 67kHz Auto restart modeKA1M0680RB-YDTU TO-3P-5L(Forming) KA1H0680B-TU TO-3P-5L 800V, 6A 100kHz Latch up modeKA1H0680B-YDTU TO-3P-5L(Forming) KA1H0680RFB-TU TO-3PF-5L 800V, 6A 100kHz Auto restart modeKA1H0680RFB-YDTU TO-3PF-5L(Forming)