----------. I $;~~: ~~~~v]]j~]jj:,~-)J~~ Ffls'.r . . R ::G(3'\!ER~f designed inverters, ence and rectifiers for special converters, free wheeling high efficiency applications Designer's <,;.?- jtib~w,.. I 1.1-T~: :-w m such as dc power systems, diodes. recovery at frequencies .7 !~'Q'?J[E[:! F] :2CT; F[ : Fs ultrasonic having typical r LE,J,b , #J>{j#:,L choppers, A complete supplies, low RF interfer- line of fast recovery time of `100 nanoseconds providing to 250 kHz. Data for "Worst Case" Conditions . The DesignersA Data sheets Derrnit the desiqn of most circuits entirelv from the information p;esented. Limit curves - representing boundaries on device characteristics - are given to fac[l(tate worst case" design. ~- -+ I Rating , Peak Repetitive Working i Peak Reverse Voltage DC Blocking ! Non-Repetitive I Symbol ---- I VRWM MR8Z0 v~R~fl50 l--~ Reverse Voltage Voltage _J:--v5._ Peak Reverse VRSKI i MR822 ------ 100 T I ~ I MR821 .,..` ~ \ MR824 I ~,R,~Z&' Unit ---- I\j-.- .'~~ volts 400 .~, j4~@ 200 --&--l-=fi~'650 i 75 I 0.025 0035 o&5 0055 0234 0.246 ------ L volts I --r I volts Amp * 0.1]5 0175 i T ---- Amp 1 `+"--" 0.115 ---- 0.135 l-- 0990 1010 Operating and Storage Junction Temperature ~ ---- ., . . j ~ ~~ , \.&tAik.,s$ TJTstg Ranqe (2) .-65 10+175 Oc _ L ---- CASE FAE[;HANI!CAL CASE: .:,f\: I Void F I IV ISH: / VI R820 l-i I -10.51mAl 194 CHARACTERISTICS Free, Transfer External Surfaces Molded are Cor- rosion Resistant F)OL.AR 17rY: Indicated by Diode Symbol \VEIGHT: Charaderistic _---- Reverse Recoverv (IF = l.OAmp (IFM Time to VR = 30 Vdc, = 15 Amp, Reverse Recoverv di/dt VR = 30 Vdc, (1) MU*7 be derated for (2) Derate i" emark as shown = 25 A/vs, Figure ------ of Motorola re"erse 21j) Figure Inc. Figure 25: ---- oower +Ll -% dissi,,a?.ion. Typ ~ Max / i ""ii ltiAXIMUM ] [ j IRM(REC) i r:T- TEMPERATURE 3/8" PURPOSES: from case for 10 s at 5.0 lb. tension. 1 & LEAD I:OR SOLDERING n~ 350C, ! See Note . `rr i Fig.re251 Current (IF = l. OAmpto ATrad _ 2.5 Grams (Approximately) -?3 I 3 1. __~ @ MOTOROLA INC 1972 MAXIMUM CURRENT AND TEMPERATURE RATINGS NOTE MAXIMUM JUNCTION 1 TEMPERATURE DE RATING When operating this rectifier at junction temperatures over approximately 85C, reverse power dissipation'$$ ..,, *2 and the possibility of thermal runaway must be Q@~~:<i },* sidered. The data of Figure 1 is based upon worstq~sb,.++ reverse power and should be used to derate.$J~>#$" from its maximum value of 175C. Seel&*@'J?or additional information on derating for@@ rsRv@bwer ~. 100 -- -- -- -- -- I 3oo~~ -- c \ 4odc~ 1 80 60 80 100 VR, 200 PEAK REVERSE VOLTAGE 300 ~ 400 600 (VOLTS) TA, z w x I AMBIENT TEMPERATURE (C) \ E . ~ _400 v ~ -- 20 TA, AMBIENT TEMPERATURE (oC) 40 60 TA, 80 AMBIENT 100 TEMPERATURE 120 140 (C) 160 18[ MAXIMUM CURRENT NOTE ~-Current tion tional ~ RATINGS 2 derating data is bawd uDon the thermal resDonse data of F iQure 29 a!ld the forward Dower dissioa`----~ data of F~ures 19 and 20. Since reverse powe; dissipation is no; consider(~~ ir~ F igures 6 `thr" 11, ad'di derating for reverse voltage and for juncrion to ambient thermal resistance rlust be applled. See Note 3. -___.~ -_ SLQLIAREWAVE iNPUT SINE WtiVE INPUT -. -..-,,,-,, ,-.: ,+,.,~:~ _-.=::,,:.c,-~--. - ,"--- $ .._ " = ,-, - :- ;,.,,; ~.-.-:.]:~ x --.-. ":' .=':,.. .,,: :; `. -d.-, ~~ : ., . .:,7 : "~,,; ~ 20 RESISTIVE. + $ m BOTH SINK -- 16 . L2ADS TO HEAT WITH LEN GTIHS AS SHO'NN L = 1/8,, - --- 5 . g INDUCTIVE LOAOS ~ -- 12 z a \ ---- 1/4" -- 0 : 8.0 318" u a . u z ~ < L -- < \ 518*L 4.0 < . o ; 75 ` 85 $ 95 ` 115 105 TL, LEAO ` 125 $ 135 TISMPERATURE i 145 -155 165 175 (C) TI., LEAD 20 40 60 80 TA, AM81ENT ---- 100 120 "TEMPERATURE 143 (DC) i 60 TEMF'ERATURE (DC) I 80 TA, Ah181ENT Tl:MPERATURE (C) REVERSE NOTE DE RATING FOR POWER DISSIPATION Ie"rwhe" 3 REVERSE AND POWER Vp power neg[,gcb le. For temperature must which loss due to reverse .urrentisgenerallv reliable circ" It deszgn, be Ihm!ted results lnthermalc. plish ed by .seofeq" Eq"atlon 1 Where. TA ation `T1 to either naway. the not j"ncrlon data 2. -TJ(ma. )) -PB Tempera?"re (from F,gures loorll) ever is lower, ROJA or 175C, Power D,s.lpatio" (Fcom F!g"re for TJIm8. ) as show. below) = Thermal Resistance, Junction a.ross Find Maximum Load of thermal reslsrance, j.ncr, the effect of thermal response may be fo. "d by "sing Equat, on 2 TA = TJ[max) The reverse power IS negligible. Power Terms defined given to amb(ent, - (PR + P=) PF = Forward Other on 12 Satisfactory [see F 19.re, lg & 20) 13 is calculated for TJ = 150C. When TJ is lower, PR <W(II decrease, IIS v.I"e can be found by multlplv, ng PR bv the normalized re"erse current from Figure The 14 at the temperature re"erse circuits. For center-tapped powt!r full data IS .alc"lated for rectification .slng the data for half wave either reslst,ve 13sho"ld (a.). Ambient IPKIIA" For two ,np"t. .ases. For the 20.1 and be used for square these Temperature = 20, Input Half Wave the wave ~'P IS the F!nd Step 2: Fnd Step 3: Find PR(m..) Vp; Vp 5 Correct = TJ(maxI loads 1A" = 2 A, Cap.c!t,.e = 120 V (rms) Sine Wave, Circu>t. F!nd fi Vin from = F,gure 169 1. fcom FiQ"re12. IR normalized from PR to TJ[max) Step 6 Find PF from V, VR[pk) Read TJ(ma.I = 338 V = 119C. Read PR = 770mW@140C F,g. re 14. Read PR = lRI.orm) lR(norm) . PR [Figure = 0.4 12} Step 7 Compute \ ::J Fgure TA from 19 Read PF = 24 W. At or a times, Ihermal IS eq.lva- a discrepancy response TA = TI (175$3fi4~X~}) PR ROJA (0,31) (25) TA = 115- (lW~,i:Y'19~~ A = ~ , 0 c :., \ 3:& ,t,\':, t~,;.... ,X-J ,<&,\> :...,:.~ ~ beween ~$~vd WIII occur because rect!f, catton a bridge for Voltage 1 1. of interest wane transformer, be used for sane wave l(p~)ll 13 clrc" its. clrcu!~s. ~*:* .,,::J .,,!. Step 7: Compute TA from TA = TJ(max I (PR + PF) ROJA YJ;,,T :*,.,.. TA =119-10.31+2.4)(25) "'" `.::4} t'.;'. .~+,:~ TA = 51C }..; ~,,,.,. ""/ii::>.,41 SO!utl On 2 <;i-. ,, 1..: ,,]i,,,, ., Steps 1 thru 5 are as above ,,i ,. ,...i~~. Step 6 Find TA = TI from F19.re 10. Read,T~.,~$1, ~?~. derating R@JA 12 and brtdge PR=O.4x770=310mW. 20 ClW, above. on Figures for For case on Figure one leg of the transformer. = Z5C1W, Step4. to Amb, e.t, IS o"er Diss, patio" rect!flers. thedc center-tapped of F,gure of Step Step When data "oltage Solution wh,ch (See F19. re 1 ) PR = Reverse or 13, adjusted load regardless waveform, wave Ftq. re 12 should nnp"ts R9JA Junction Tempera- TJ(max) = Maximum AllOwable t.re to prevent thermal r"nawav full .cro~the that EXAMPLE ROJA T1 = Ma., mum Allowable Ambte"t "eglecti"g re"erse power d,ss, patio" of "e.oltage of Input loaded capac, t,"e beaccom- line tol, II )s recommended regardless capacitively the temperature derat, ng may 1 orequat$on - (175 max, m.m 175Cor Proper IS the capac,ttveioads, DISSIPATION be used, Inthlsrectifler, CURRENT is factored i;,~.,~ol"th~ ,, ,$ 2. *+..**YP.* I 2000 I 1000 I LOADS 700 / / `CAPACITIVE " / / 500 I W+,,*--- 300 la "" .= 100 70 F/ Y ! ~ 1, ---- ---- 50 ` o ! v' / 100 200 300 Vp, PEAK APPLIED , , , 1 1 , MAXIMUM ~ I ! [ 1 1 [ I I ! TYPICAL 1 400 500 VOLTAGE (VOLTS) 600 700 I 0 20 40 60 80 TJ, JUNCTION 100 120 TEtlPERATURE 140 (C) 160 180 200 VR, REVERSE VDLTAGE (VDLTS) STATIC CHARACTERISTICS 4oo~ :- 0.7 [ -- 0.21 0.2 0.6 0.8 -2.5 1.0 1.2 1.4 1.6 0.3 m 0.3 0.5 IF(AV), 0.7 1.0 AVERAGE ; 4, `bE ;.0 3.0 -2.0 i~ 0.3 m 0.4 ,_ ..."". \,m. fi. .,, .m Ill 1.0 -1.5 0.5 ,..,.,I -,, I ----1 ., -.,----- I 2.0 FORWARD I I 3.0 5.0 CURRENT 0.5 1.0 5.0 ` ` ` -` 10 20 30 - i 50 II 7.0 (AhlP) 10 20 IF(AV), AVERAGE FCRWARD CURRENT (AMP) - - -100 - : 200300 TYPICAL RECOVERED STORED CHARGE (See Note 1.0 1 1 1 i 1 1 I I 1 t 1 1 1 1 [ 1 I I I I I [ I I 1 I I I I [ 1 I I I I I I Ill I I I I Ml 1 2.0 I 1.0 IFM=20A. M 0.5 lfl A I DATA 4) & 1 I , , 1 I [ 1 1 1 1 I { [ I I I I I I I II [ ! ! ! ! I !!!! IFM= 1 1 1 ,. 1 20A 0.2 0.1 0.05 ~= 0.02 0.01 0.02 1.0 2.0 10 5.0 20 50 """ 100 50 -- -- -- 2 ~ + & I I I I I I IL -- -- -- -- -- -- -- -- [ 100 I.u 20 dl/dt NOTE ....,., 20 10 5.0 100 70 (AM P/Ps) 4 <,..! .,,* + $:<,~>:i;$~~~ *;,:.' Reverse time recover,~ that t~e~s the period which cur~n?~t~u a previously ..,,, `..,-. pessas thrq<~~ going negatively diode, recovers the to,a'~~~Which time the ~~{~~~,given until is less than Rever@;"y}e~S~ry currey@~~~{r@ is a application rectifier, 107. direct of the peak time from biased reverse of the 1~~ current current. the forward volta9e. is very circuit depend- e~i~,N~&ical and maximum recovery time of all Motorola fast re~~q power rectifiers are rated under a fixed set of conditions .',.>., usI&g IF = 1.0 A, VR = 30 V. In order to cover all circuit conditions, versus and curves are given mmmutation for di/dt junction for for temperatures typical various of d i/dt i(t) rectifier reverse function reverse recovery elapses forward recovered levels 25C, stored of forward 75C, 100 1~~(~~~) charge From current and C, approximated and peak stored charge reverse curves recovery using the versus CUrrent following di/dt, ( I RM recovery ( R EC) ) can formulas: 15o"c. To current di/dt, covery rectifiers use these level and just the test curves, before operating current is shown. it is necessary commutation, junction waveform to the know circuit temperature. for a I I Motorola the forward `rr commutation The fast reverse [1 QR -- dildt =1.41X re- 112 recovery IRM(REC) = 1.41 x [QR x di/dt] "2 time be (trr) CIOSely 4 SLO.BL3 FUSI: 30 V[lc CONSTANT VOI.TAGE S"PP'''A-- 100 IF, FORW/Al?D CURRENT @ (AMP) 1.0 2.0 !1.0 10 20 50 100 t, TIME (ins) NOTE To in determine a given The maximum situation, temperature thermocouple The thermal large enough so generated steady-state of TL, the on it the junction should lead as close connected will in the diode conditions temperature procedure lead the mass that junction following of placed point. surges the 5 not diode measured using a to the tie point is normally respond of pulsed Using may the as possible significantly are achieved. temperature be to the as a result of is recommended: the to tie heat operation once measured value be determined i<~~$.U<# A TJL is the lead temperature. a TJL where = Ppk r(t) time r(tl + tp) time increase It may . R@JL model permits mounting junction configuration to rectifier t from Figure in junction + (1 - = normalized value 29, D) ,,<tl~: the ,: *$.,,, ~:''", \'f\ + r(tp),{~$~~~~~~~!;o temperature by: o r(tl of transient i.e.: value of transient + tp. lead is brought below. + tp) above T* = Ambient R@s Temperature Terms = Thermal sink TL = Lead R@L Temperature thermal Lowest as close as in the model Resistance, thermal r$#4~@hq~ at *iJ\::s., ?,..,s~ $,*'!! . *f. ,., ` `.,}. ,.:~, ?,,>s ...\ .a~, therw,a~,~. b~$ta nce at `.!}$,,,~$~. ,,.~. ,, TC R6J = Case Temperature Resistance, PD Temperature Lead Sink = Thermal tion TJ = Junction Heat to Ambient = Thermal Resistance, Junc- to Case = Power Dissipation = PF + PR PF = Forward PR (Subscripts ~k to be found. to Heat = normalized t, above any signify: be determined [D the for .'$~$ues occur when one side of the :.. possible to the heat sink as shown by: TJ=TL+ATJL where of ,.,~~~<fance Values ~:~~ii~it$speakfan eq'*yale#square POwerpulse. ~1,7~*,+* ~,i\l::<r:~.. .,:.* .$.,:*. ..... . t..+ A and for K refer to anode thermal resistance Power = Reverse and cathode components Dissipation Power Dissipation sides respectiveiv) are: "ME pt,q RO L = 40 C/W/l ReJ Tc, the fore N. lead mounted slow thermal maximum applications. 44 CfW/1 4C/W When holds N Maximum. Maximum. used as a 60 TJ(pK) temperature = TJ(max) and and measurements of the case temperature, equal to junction temperature in prac- response lead TL Typically Typically ROJ is so low, be approximately Since will tical = 2C/W may close Hz rectifier, to TJ(AV) be found ,There- as follows: - ATJL where ATJL can be approximated ATJL ~ reverse power sine wave The wave on a 1-1/2" the x dissipation operation method sketch, 1-1/2" where copper of ReJA surface . ID w ~c I OX 6??3 PRINTED IN U5A 12-71 IMPERIAL 20912 LITHO 826073 * PHOENIX, 12>,4 ARIZONA 9 A sum of forward in Figures Figures 13 SUBSIDIARY mounting & and 12 & 19 for 20 to a P.C. is approximately area. strips for square board for 40C/W are boards where avail- -- ~~ ,0,,,,,0"",,,,", OF wo"nting for half wave circuit MOTOROLA is 25C/W of Values or P.C. -- Recommended 85036 is the shown and tVPical fOr mounting to terminal able surface area is small. L, LEAO LENGTH (INCHES) as follows: PO operation. recommended shown . PD; ReJL INC. D8 6073