any and all sanyo products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft? control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. consult with your sanyo representative nearest you before using any sanyo products described or contained herein in such applications. sanyo assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other parameters) listed in products specifications of any and all sanyo products described or contained herein. thick film hybrid ic 2-channel convergence correction circuit (i c max = 6a) ordering number:enn5169 STK391-020 sanyo electric co.,ltd. semiconductor company tokyo office tokyo bldg., 1-10, 1 chome, ueno, taito-ku, tokyo, 110-8534 japan 92099th (kt)/80995ha (id) no.5169C1/6 1 15 55.6 64.0 21.0 31.0 16.5 3.6 (10.02) 14 2.54=35.56 0.5 2.54 8.5 0.4 2.9 4.0 28.0 package dimensions unit:mm 4062 [STK391-020] overview the STK391-020 is a convergence correction circuit ic for video projectors. it incorporates two output amplifiers in a single package, making possible the construction of crt horizontal and vertical convergence correction output cir- cuits for each of the rgb colors using ust three hybrid ics. applications ? video projectors features ? 2 output amplifier circuits in a single package ? high maximum supply voltage (v cc max = 44v) ? low thermal resistance ( q j-c=2.7 c/w) ? high temperature stability (good idling current tem- perature compensation) ? low correction coil inductance for improved oscillator stability (up to f h = 64khz) ? pin compatible with the stk4274 for easy replacement specifications maximum ratings at ta = 25?c r e t e m a r a pl o b m y ss n o i t i d n o cs g n i t a rt i n u e g a t l o v y l p p u s m u m i x a mv c c x a m 4 4 v t n e r r u c r o t c e l l o c m u m i x a mi c 2 2 , 0 2 , 1 1 , 9 r t 0 . 6a e c n a t s i s e r l a m r e h t q c - j ) r o t s i s n a r t r e p ( 2 2 , 0 2 , 1 1 , 9 r t 7 . 2 e r u t a r e p m e t n o i t c n u jj t 0 5 1 e r u t a r e p m e t g n i t a r e p oc t 5 0 1 e r u t a r e p m e t e g a r o t sg t s t 5 0 1 + o t 0 3 C operating characteristics at ta = 25?c, rg=50 w , v cc = 24v r e t e m a r a pl o b m y ss n o i t i d n o c s g n i t a r t i n u n i mp y tx a m e g a t l o v e s i o n t u p t u ov o n 2 . 0s m r v m t n e r r u c t n e c s e i u qi o c c 0 20 4a m e g a t l o v l a r t u e nv n 0 5 C00 5 +v m e m i t y a l e d t u p t u ot d v , t u p n i e v a w r a l u g n a i r t , z h k 5 7 . 5 1 = f t u o p - p v 5 . 1 =1s ?c ?c ?c ?c/w sanyo : sip15
STK391-020 no.5169C2/6 equivalent circuit test circuit vo : v no is measured by connecting a vtvm. v n is measured by connecting a dc voltmeter. t d is measured by connecting an oscilloscope.
STK391-020 no.5169C3/6
STK391-020 no.5169C4/6 maximum ratings tj max, tc max, q j-c the heatsink design is determined by the maximum rat- ings of several key parametersCtj max, tc max and q j-c. ? tj max (junction temperature) tj max is dependent on the physical structure of each func- tional element. a junction temperature exceeding this rat- ing can lead to device deterioration and breakdown, so the design must not exceed this rating. ? tc max (operating substrate temperature) tc max is dependent on the materials used within an ele- ment and on the circuit design, and should be selected on the basis of reliability. operation exceeding this value is not guaranteed. ? q j-c (thermal resistance) q j-c is dependent on the heatsink design, which can vary greatly. the heatsink necessary is determined by calcula- tion using the maximum rating for tj. as tj and tc operating conditions are independent, the heatsink must be designed to satisfy the maximum ratings for both parameters. heatsink design considerations in the expressions below pd represents the operating ic substrate internal power dissipation and pc represents the power dissipation per transistor. the heatsink thermal re- sistance, q c-a, required to dissipate the total power dissi- pation, pd, is determined as follows : condition 1: ic substrate temperature not to exceed 105 c pd q c-a+ta<105 c (tc max) ............................ (1) where ta is the guaranteed maximum ambient tempera- ture. condition 2: power transistor junction temperature, tj, not to exceed 150 c pd q c-a+pc q j-c+ta<150 c (tj max) .............. (2) where q j-c is the power transistor thermal resistance per transistor. therefore, the heatsink design must satisfy both these expression. design process a model circuit for a single channel in the stk319-020 is shown below. the power dissipation, pd, is the sum of channel 1, pd1, and channel 2, pd2, power dissipations. pd max=pd1 max+pd2 max therefore, form equation (1), q c-a< ................................ (3) the necessary heatsink resistance is determined (note that tc max=105 c) the power dissipation per power transistor per channel, pc, is related to the transistor junction temperature by the fol- lowing equation. tj=pd max q c-a+ta+pc q j-c ............................ (4) where tj cannot exceed tj max=105 c. therfore, in order to maintain tj below 150 c, a lower heatsink thermal re- sistance, q c-a, is necessary to lower tc. heatsink design example this example assumes the following worst-case conditionsC v cc h= 35v, v cc l= 25v, output coil l y =80 m h and r y =0 w , current detector resistance r nf =4.7 w , ip-o max=0.6ap-o (ip-o (ip-p=1.2a) sawtooth wave input, io (dc) max=0.6a dc input, both chanels operating, ta max=60 c (guaranteed maximum). the channel1 power dissipation, pd1, is given from fig- ures 1 and 2. ? pd1 max=7.0w (ac) with sawtooth wave input ? pd1 max=13.2w (dc) with dc input as pd1 max (ac) < pd1 max (dc), the power dissipation is greater with dc input. also, lokking at the output tran- sistor dissipation, pc, ? pc=0.5pd1 with sawtooth wave input ? pc=pd1 with dc input (one side transistor continuously on) the power dissipation is also higher with dc input. ac- cordingly, the heatsink design example below assumes dc input. the power dissipation in the predriver stage is ig- nored. as pd1 max=pd2 max+13.2w, pd max (both channels) is given by. pd max=pd1 max+pd2 max=26.4w from equation (3) with ta=60 c, q c-a= = = ........ 1.70 c/w for a 2mm aluminum heatsink with no surface coating, the necessary surface area, s, is given from figure 3. s=780cm 2 (28cm 28cm) tc max C ta max pd max tc max C ta pd max 105C60 26.4
STK391-020 no.5169C5/6 also from equation (4), the output stage power transistor jucntion temperature is given by tj =pd max q c-a+ta+pc max q j-c =26.4 1.7+60+13.2 2.7 =140.5 c which provides a 9.5 c derating below tj max=150 c. however, an allowance for the predriver stage power dissi- pation (transistors, resistors, etc.) should also be included in the substrate internal power dissipation, pd.
specifications of any and all sanyo products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. to verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. sanyo electric co., ltd. strives to supply high-quality high-reliability products. however, any and all semiconductor products fail with some probability. it is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. when designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. in the event that any or all sanyo products(including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of sanyo electric co. , ltd. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equipment, refer to the "delivery specification" for the sanyo product that you intend to use. information (including circuit diagrams and circuit parameters) herein is for example only ; it is not guaranteed for volume production. sanyo believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. this catalog provides information as of september, 1999. specifications and information herein are subject to change without notice. STK391-020 ps no.5169C6/6
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