KA1M0765R-YDTU FAIRCHILD [Fairchild Semiconductor], KA1M0765R-YDTU Datasheet

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KA1M0765R-YDTU

Manufacturer Part Number
KA1M0765R-YDTU
Description
Fairchild Power Switch(FPS)
Manufacturer
FAIRCHILD [Fairchild Semiconductor]
Datasheet
Features
• Precision fixed operating frequency (67kHz)
• Pulse by pulse current limiting
• Over load protection
• Over voltage protecton (Min. 23V)
• Internal thermal shutdown function
• Under voltage lockout
• Internal high voltage sense FET
• Auto restart
• Soft start
Internal Block Diagram
©2001 Fairchild Semiconductor Corporation
KA1M0765R/KA1M0765RC
Fairchild Power Switch(FPS)
#5 Soft Start
#3 V
#4 FB
CC
5V
5 A
7.5V
25V
32V
1mA
+
+
9V
2.5R
OVER VOLTAGE S/D
1R
Thermal S/D
+
OSC
Vref
5V
0.1V
L.E.B
Good
logic
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
frequency oscillator, under voltage lock out, leading edge
blanking, optimized gate turn-on/turn-off driver, thermal
shutdown protection, over voltage protection, temperature
compensated precision current sources for loop
compensation and fault protection circuit. compared to
discrete MOSFET and PWM controller or R
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.
S
R
TO-3P-5L
1
Q
1. DRAIN 2. GND 3. Vcc 4. FB 5. S/S
Power on reset
Internal
bias
S
R
Q
SFET
TO-220-5L
1
www.fairchildsemi.com
#1 DRAIN
#2 GND
CC
solution, a
Rev.1.0.2

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KA1M0765R-YDTU Summary of contents

Page 1

... KA1M0765R/KA1M0765RC Fairchild Power Switch(FPS) Features • Precision fixed operating frequency (67kHz) • Pulse by pulse current limiting • Over load protection • Over voltage protecton (Min. 23V) • Internal thermal shutdown function • Under voltage lockout • Internal high voltage sense FET • ...

Page 2

... KA1M0765R/KA1M0765RC Absolute Maximum Ratings Characteristic (1) Maximum Drain voltage Drain-Gate voltage (R = Gate-source (GND) voltage (2) Drain current pulsed (3) Single pulsed avalanche energy Continuous drain current (T = Continuous drain current (T =100 C) C Maximum Supply voltage Input voltage range Total power dissipation Operating ambient temperature ...

Page 3

... GS DS Coss f=1MHz Crss t V =0.5BV d(on) DD DSS (MOSFET switching tr time are essentially t d(off) independent of tf operating temperature) V =10V, I =7.0A =0.5BV DS DSS switching time are Qgs essentially independent of Qgd operating temperature) KA1M0765R/KA1M0765RC Min. Typ. Max. 650 - - - - 200 - 1.25 1.6 3 1600 - - 310 - - 120 - , I =7. ...

Page 4

... KA1M0765R/KA1M0765RC Electrical Charcteristics (CONTROL part) ( unless otherwise specified) Characteristic UVLO SECTION Start threshold voltage Stop threshold voltage OSCILLATOR SECTION Initial accuracy Frequency change with temperature Maximum duty cycle FEEDBACK SECTION Feedback source current Shutdown Feedback voltage Shutdown delay current SOFT START SECTION ...

Page 5

... C 1.15 1.1 1.05 V Vstart th(H) 1 0.95 0.9 0.85 100 125 150 ] C Figure 6. Start Threshold Voltage KA1M0765R/KA1M0765RC Fig.2 Feedback Source Current 100 125 150 Temperature [ ] C Fig.4 Max Inductor Current 100 125 150 Temperature [ ] C Figure 4. Peak Current Limit Fig.6 Start Threshold Voltage ...

Page 6

... KA1M0765R/KA1M0765RC Typical Performance Characteristics (These characteristic graphs are normalized Fig.7 Stop Threshold Voltage 1.15 1.1 1.05 V Vstop th(L) 1 0.95 0.9 0.85 - Temperature [ Figure 7. Stop Threshold Voltage Fig.9 Vcc Zener Voltage 1.2 1.15 1.1 1. 0.95 0.9 0.85 0.8 - Temperature [ Figure 9. V Zener Voltage CC Fig.11 Shutdown Delay Current 1.2 1.15 1.1 1.05 Idelay 1 0 ...

Page 7

... Typical Performance Characteristics (These characteristic graphs are normalized Fig.13 Soft Start Voltage 1.15 1.1 1.05 Vss 1 0.95 0.9 0.85 - Figure13. Soft Start Voltage (Continued) 2.5 2 1.5 Rdson ) ( 1 0.5 0 100 125 150 -25 Figure 14. Static Drain-Source on Resistance KA1M0765R/KA1M0765RC Fig.14 Drain Source Turn-on Resistance 100 125 150 7 ...

Page 8

... KA1M0765R/KA1M0765RC Package Dimensions 8 TO-3P-5L ...

Page 9

... Package Dimensions (Continued) TO-3P-5L (Forming) KA1M0765R/KA1M0765RC 9 ...

Page 10

... KA1M0765R/KA1M0765RC Package Dimensions (Continued) 10 TO-220-5L ...

Page 11

... Package Dimensions (Continued) TO-220-5L(Forming) KA1M0765R/KA1M0765RC 11 ...

Page 12

... KA1M0765R/KA1M0765RC Ordering Information Product Number Package KA1M0765R-TU TO-3P-5L KA1M0765R-YDTU TO-3P-5L(Forming) KA1M0765RC-TU TO-220-5L KA1M0765RC-YDTU TO-220-5L(Forming Non Forming Type YDTU : Forming Type 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 ...

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