sps KA1L0380R 1 #3 v cc 32v 5 m a 9v 2.5r 1r 1ma 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 5v vref internal bias good logic sfet #2 drain #1 gnd #4 fb sps the sps product family is specially designed for an off-line smps with minimal external components. the sps consist of high voltage power sensefet and current mode pwm ic. included 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, and temperature compensated precision current sources for loop compensation and fault protection circuitry. compared to discrete mosfet and controller or rcc switching converter solution, a sps 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. features ? precision fixed operating frequency (50khz) ? pulse by pulse over current limiting ? over current protection ? over voltage protection (min. 23v) ? internal thermal shutdown function ? under voltage lockout ? internal high voltage sense fet ? auto restart ordering information device package operating temperature KA1L0380R to-220f-4l - 25 c to +85 c to-220f-4l 1.gnd 2. drain 3. v cc 4. fb block diagram rev. b 1999 fairchild semiconductor corporation
KA1L0380R sps 2 absolute maximum ratings notes: 1. tj=25 c to 150 c 2. repetitive rating: pulse width limited by maximum junction temperature 3. l=41mh, v dd =50v, r g =25 w , starting tj=25 c characteristic symbol value unit drain-source (gnd) voltage (1) v dss 800 v drain-gate voltage (r gs =1m w ) v dgr 800 v gate-source (gnd) voltage v gs 30 v drain current pulsed (2) i dm 12 a dc single pulsed avalanche energy (3) e as 95 mj avalanche current (4) i as - a continuous drain current (t c =25 c) i d 3.0 a dc continuous drain current (t c =100 c) i d 2.1 a dc supply voltage v cc 30 v analog input voltage range v fb - 0.3 to v sd v total power dissipation p d (watt h/s) 35 w derating 0.28 w/ c operating temperature t opr - 25 to +85 c storage temperature t stg - 55 to +150 c
sps KA1L0380R 3 note: pulse test: pulse width 300 m s, duty cycle 2% electrical characteristics (sfet part ) (ta=25 c unless otherwise specified) characteristic symbol test condition min. typ. max. unit drain-source breakdown voltage bv dss v gs =0v, i d =50 m a 800 - - v zero gate voltage drain current i dss v ds =max., rating, v gs =0v - - 50 m a v ds =0.8max., rating, v gs =0v, t c =125 c - - 200 m a static drain-source on resistance (note) r ds(on) v gs =10v, i d =1.5a - 4.0 5.0 w forward transconductance (note) gfs v ds =15v, i d =1.5a 1.5 2.5 - mho input capacitance ciss v gs =0v, v ds =25v, f=1mhz - 779 - pf output capacitance coss - 75.6 - reverse transfer capacitance crss - 24.9 - turn on delay time td(on) v dd =0.5bv dss , i d =3.0a (mosfet switching time are essentially independent of operating temperature) - 40 - ns rise time tr - 95 - turn off delay time td(off) - 150 - fall time tf - 60 - total gate charge (gate-source+gate-drain) qg v gs =10v, i d =3.0a, v ds =0.5bv dss (mosfet switching time are essentially independent of operating temperature) - - 34 nc gate-source charge qgs - 7.2 - gate-drain (miller) charge qgd - 12.1 -
KA1L0380R sps 4 notes: 1. these parameters, although guaranteed, are not 100% tested in production 2. these parameters, although guaranteed, are tested in eds (wafer test) process electrical characteristics (c ontrol part ) (ta=25 c unless otherwise specified) characteristic symbol test condition min. typ. max. unit reference section output voltage (1) vref ta=25 c 4.80 5.00 5.20 v temperature stability (1)(2) vref/ d t - 25 c ta +85 c - 0.3 0.6 mv/ c oscillator section initial accuracy f osc ta=25 c 45 50 55 khz frequency change with temperature (2) d f/ d t - 25 c ta +85 c - 5 10 % pwm section maximum duty cycle dmax - 74 77 80 % feedback section feedback source current i fb ta=25 c, 0v vfb 3v 0.7 0.9 1.1 ma shutdown delay current idelay ta=25 c, 5v vfb v sd 4.0 5.0 6.0 m a over current protection section over current protection i l (max) max. inductor current 1.89 2.15 2.41 a uvlo section start threshold voltage vth(h) - 14 15 16 v minimum operating voltage vth(l) after turn on 9 10 11 v total standby current section start current i st v cc =14v 0.1 0.3 0.45 ma operating supply current (control part only) i opr ta=25 c 6 12 18 ma v cc zener voltage v z i cc =20ma 30 32.5 35 v shutdown section shutdown feedback voltage v sd - 6.9 7.5 8.1 v thermal shutdown temperature (tj) (1) t sd - 140 160 - c over voltage protection voltage v ovp - 23 25 28 v
sps KA1L0380R 5 typical performance characteristics (these characteristic graphs are normalized at ta=25 c) figure 1. operating frequency figure 2. feedback source current figure 3. operating current figure 4. max. inductor current figure 5. start up current figure 6. start threshold voltage
KA1L0380R sps 6 typical performance characteristics (c ontinued ) (these characteristic graphs are normalized at ta=25 c) figure 7. stop threshold voltage figure 8. maximum duty cycle figure 9. v cc zener voltage figure 10. shutdown feedback voltage figure 11. shutdown delay current figure 12. over voltage protection
sps KA1L0380R 7 typical performance characteristics (c ontinued ) (these characteristic grahps are normalized at ta=25 c) figure 13. soft start voltage figure 14. drain source turn-on resistance
trademarks acex? coolfet? crossvolt? e 2 cmos tm fact? fact quiet series? fast ? fastr? gto? hisec? the following are registered and unregistered trademarks fairchild semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. life support policy fairchilds products are not authorized for use as critical components in life support devices or systems without the express written approval of fairchild semiconductor corporation. as used herein: isoplanar? microwire? pop? powertrench? qs? quiet series? supersot?-3 supersot?-6 supersot?-8 tinylogic? 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, or (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 significant injury to the user. 2. a critical component is 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. product status definitions definition of terms datasheet identification product status definition advance information preliminary no identification needed obsolete this datasheet contains the design specifications for product development. specifications may change in any manner without notice. this datasheet contains preliminary data, and supplementary data will be published at a later date. fairchild semiconductor reserves the right to make changes at any time without notice in order to improve design. this datasheet contains final specifications. fairchild semiconductor reserves the right to make changes at any time without notice in order to improve design. this datasheet contains specifications on a product that has been discontinued by fairchild semiconductor. the datasheet is printed for reference information only. formative or in design first production full production not in production 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. uhc? vcx?
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