PC494C

UPC494 NEC | Alldatasheet

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ee ATA SHEET = ean ee INEL@ _sC#{IPOLAR ANALOG INTEGRATED CIRCUIT Ce PC494 [el RR naa ae? SWITCHING REGULATOR CONTROL CIRCUIT SILICON MONOLITHIC BIPOLAR INTEGRATED CIRCUIT

DESCRIPTION

The uPC494 is an inverter control unit which provides all the control circuitry for PWM type switching regulators. Included in this device is the voltage reference, dual error amplifiers, oscillator, pulse width modulator, pulse steering flip flop, dual alternating output switches and dead time control.

FEATURES

© Complete PWM Power Control Circuit. © Adjustable Dead-time (0 to 100 %). @ No Double pulsing of same output during load transient condition, Dual error amplifiers have wide common mode input voltage capability (-0.3 V to Vec-2 V). © Circuit architecture provides easy synchronization. @ Uncommitted outputs for 250 mA sink or source. © With Miss-operation Prevention Circuit for low level supply voltage. © Full Pin-Compatible TL494C. ORDERING INFORMATION CONNECTION DIAGRAM (Top View) Wwe ty Ree ourpur

16 Pin Plastic SOP (375 mil) hl Lal fia] fal fil fro] [2]

16 Pin Plastic SOP (300 mil) \\e/

f\\ is son [1 TI [sJ Ts] 12} Te] Sir my FD om eG thre pur tac Sie tur ono Document No.IC—1299A, (O.DNo. |C--7779) ‘Date Published November 1989 M. i Pere lovember © NEC Corporation 1988

RRS cc na eaarce ire Nt 0) Can cn Geetha in NRK INS a iran al alia kG IRE atu Bet VAPOR ee Rta ay Suumat Ne ek apubemien TONG IC ar OER Oe rae a a i BLOCK DIAGRAM | i on : Cc} Control ' vec @ (OuAPst Contra GND jo (8)cr Rt @) ap (11)c2 J] Ke o® Dead Time Ol COMPARATOR Dead-Time | coms OED Non-Inv. Input (1) EAL PWM, Inv. Input sf > COMPARATOR Non-Inv. Input (—_ qj Inv. Input —- Feed-Back (3) ABSOLUTE MAXIMUM RATINGS (T,=25 °C) Supply Voltage Vee 41 v Error Amplifier Input Voltage View Vect0.3 v Output Voltage VceR 41 Vv Output Current Io 250 mA Total Power Dissipation Prit,e25°C) 1000 mw Operating Temperature Range Topt —20 to +85 °c Storage Temperature Range Tsg —65 to +150 °c RECOMMENDED OPERATING CONDITIONS Output Voltage VcER -03 a | ve Output Current Ic _ 200 | ma Error Amplifier Sink Current loamP -03 | ma [Tninpreiawes” Serpe | | ook

Reg tien athe ead oe alee Fash SRA pee tah peated! SNe Ab her Wet ee VL diet be Kuen Way YO toa RI oN ele be SID: eats Siva Gr’ Wat ba J a CP he Co Obed ST eer Ene On eariertectS Bist AiR iets. clad pens ot YA eae genes Sh MOR NEO ea 4 ELECTRICAL CHARACTERISTICS (Vec=15 V, f=10 kHz, —20 = T, = +70 °C, unless otherwise noted) BLOCK CHARACTERISTIC SYMBOL | MIN. | TYP. | MAX. | UNIT TEST CONDITIONS Output Voltage Vref 475 5 5.25 Vv Iref=1 MA, Ta=25 °C A , 7 VsVccs40 V Line Regulation prem | | 8 | a | my bref=1 mA, Ta=25°C Reference . [TmAStrefS10mA, Ta=25°C | oe Section i Load Regulation [ REG. | EGL ff] at fe | mv | 1 mast refsl0 mA. Ta=25 °C Tompertue Coettcent | Vet [02 | aca | w/e | (20.6 res "0 (Note 2) °, Short Circuit Output Current | [short Lm | Vret0, Tan26 °C ln ot F Lf fe fe Tae eran Oscillator Standard Deviation of Frequency Ta=25 °C Section Frequency Change with 1 2 o°cs Ta 870 °c, Cy7=0.01 uF Temperature Ry=12 k2 . TV SVec S40 V, CT=0.01 uF Dead-time ry Me Control laximum Duty Cycle v\\-0 gomrol (Each Output) pa as Input Threshold Voltage Vth v le Input Offset Voltage Voamp=2.5 V Input Offset Current || nA | Voamp=2.5 V Input Bias Current HA | Voampr2.5V ‘Common Mode Low [| v < Amplifier + Output Source Current a Voamp=3.5 V Note 1: Standard deviation is a measure of the statistical distribution about the mean as derived from the formula; N Calculation expression of frequency fose is as follows o- /%, (Xp-X)? 1 ft =" (ny Ry) <2, (Cy) =F fose* “9 g17 Ry Oy + 1.4240" ‘ {Rr} = 9, (Cr) N-1 Note 2: Maximum duration of short circuit cond, is one second. (non repetitive)

. NEC ee - a 2 a oe 1 pc494 ee a a pwn input Threshold Voltage | 4 | 45 | v__| ZeroDuty Cycle Section Input Sink Current 03 [07 | | ma | Vipin 3)70.7 V 1¢=200 mA, VE=0, | jveewws | [om | te |v [eimeneniee’ | Collector Saturation Voltage 1=200 = 2 A, Vo=15 V Output Output Voltage Emitter Rise Time Emitter - - follower Voc=15 V, RL=150 2 19=100 mA common 70 Te08 °c Output Voltage Emitter a Fall Time a Emitter follower | m | 2 | m | Veo=15 V Standby Ct Device Bias Current lccisi) | | 10 mA | Vipin 4)=2 V, see Fig. 1

a Fig. 1 Test Circuit Voc=15 V ? RL RL Sane 150 9 MC 2W (4) ce ° Dead time Ci Output 1 Test Input (a) aH ons Fead Back | | (6) Rt C2 © Output 2 WW Olct &2 boa Ft} EA. " p+) ge aut jense Ret jaa) * Recommend film capacitor [= mt | 50 kQ: GND Voltage Waveform vec Voltage at. C1 _---9 Voltage at ce C2 ---0 Voltage at Dead-time Control Threshold = T Input Voltage | to 2g MAS Threshold _ bow} | Voltage 104 Feed Back Input 1 % (EA. Output) 97 V FUNCTION TABLE OUTPUT CONTROL. INPUT (13 pin) | OUTPUT FUNCTION ‘Single-ended or parallel output

Pica © ie cups hone i pessh oN ion tate uae pe Tes erate ee Minar an heer y tuonanit ay rans mint Cau a cepa Acie Oa nara Care Mele ein arcane ENS Rd Nr a IRD Th TYPICAL PERFORMANCE CHARACTERISTICS (T,=25 + 2 °C, Viy=15 V) MISS-OPERATION PREVENTION MAXIMUM POWER DISSIPATION CIRCUIT CHARACTERISTICS 12, 6 PCN COT pat 3 > a" B 08 Thermal Resistance tg [Fhe B 3 2 06| > 3 i © oa | J PLL 5 os 32 | : b Lt | | F o2| an L L * | td o 25 50 75 100 125 ° 3 4 5 6 Ta—Ambient Temperature —"C Voc—Supply Voltage —V . REFERENCE VOLTAGE vs. REFERENCE VOLTAGE vs. SUPPLY VOLTAGE TEMPERATURE 6 40) LTT TTT Ty ; PT ;* Fa s Y £4 Y : Lf | | 2 NG, # e 40 Hitt tt _ oO 5 10 15 20 25 30 35 40 25 0 25 50 75 100 Voc—Supply Voltage —V Ta—Ambient Temperature — °C FREQUENCY vs. Ry AND Cr FREQUENCY vs, TEMPERATURE Fol NXE 2: | ECG CEE eee E aol WN Sel | | i - OX Pi] oy fT ty aN San B

38 TNS NSH g

LLL NAC TS | s+ N iT TINNY TI 2 5 10 20 50 100 200 500 ~25 0 25 50 75 100 RT—Timing Resistance —kQ Ta~Ambient Temperature —°C

Bee bere eee eae OU Aone ened ial Os GehMUPLOIOU Ea A Gee re AN GNIGU ONLI Ln atc eSU LR ean mur uuiemin Molen ime eta CON a MEO oe PC494. DUTY CYCLE vs. DEAD TIME OPEN-LOOP VOLTAGE GAIN vs. CONTROL INPUT VOLTAGE FREQUENCY LT TT eT | 7 if | x a y WG 8 ett tt ey : jo. PL NT § 2 Ws S 60 oe y a q a LA | ee i \\ EAA | || Sei’ TET TN sol J | | CT =0.01 pF ol IN i) 1 2 3 1 10 100 1k 10k 100k 1M 10M Dead Time Control Input Voltage —V {Frequency — Hz COLLECTOR SATURATION VOLTAGE STANDBY AND BIAS CURRENT ve OUTPUT CURRENT Vs SUPPLY VOLTAGE > 2.0) 12) ee [TT 3. < tec) B gs is | = 10 et sigs ud {| || beeoo | be WT [ectm | 1 go $s tow : 8 gees i | i ba ge e~ 12 BS ¢ I BOS [| | | [ [eeeel ah 4 ce Terminal Biased 8 Fog | 4 |_| Lo 2 lect!) be % VpT=2 W64 pin) BE oa 8 s 0 40 80 120 «160 200 0 10 20 30 40 Ic, 1-Output Current — mA Voc—Supply Voltage —V

NEC ee ee ‘pcaoa PIO G s ios Ce CUCR NS ISAT ina ies Ue Mein cn Mui POMBO on Re ee a BP ORE. BASIC APPLICATION CIRCUIT Fig. 2 Circuit O Vout Output Terminal yp2 of S.M.P.S- teree | ano oh Voc b R VR 3 i O 12 13 + 1102 110 9 100 2 “T ” con Ri2 Ri I ~ R14 cy zlosense a 026 [LS ttosense S| & omar we || [1 Es O O I Fo} fo) ffl ffl fa 216 — Lo ERROR, REFERENCE Ro Rio AMP, . 110 Q : 08 Rig 100 " Boe Kol 6} VR y' f., NAP ee oe 2 ko DFAT] HsghsGshe0 pd 2 Ros Ra 3 es S24 ko 5.1 kO}5.1 ko R5 ii Re fil citor + recommend film ea it Awe Be 1000 pF C5: recom pat Cat fosc*= 40 kHz 0.01 uF 24 k219 45 75 ko one +5 V (VREF) CONNECTION DIAGRAM OUTPUT OUTPUT CONTROL IT VOLTAGE WAVEF! FUNCTION INPUT (13 pin) OUTPUT MODE OUTPU \\GI /|AVEFORM oO Collector (Rg, R19 0 2) oa ——? en Colle . Uo . Push-Pull At Ref-Out p ‘aeM10 2 u Lo i jired| Et Coeraon ewes) Emitter Follower (R11, R120 2) L_SL_I a Single-Ended or Grounded Open Collector (Rg, R49 0 2) evc2 I LU UU LL. Parallel Output (JP2 Wired) Emitter Follower (R44, R420 2) £1,€2 __o

Printed Pattern (Pattern Side, Actual Size) [e) [e) i lode Vor = = iS , t c jeje} veezeee C _ [s2Ree2. 2 i P28) —tosense a @ i SEA, | O| + losense af &) HE | lve eae GND , t | GND dey ake és Cw ats TT Ag. ES Fowl! é ~— ee af e) a fe) TYPICAL EXAMPLE OF APPLICATION CIRCUITS 1) Forward Type +Vec i + +12V | _ jv Cy (13)}ourpuT 13 control. | (9) 2 To EAI To EAL “T] * (Over Current (Vo sense) Protection) Ref OUT GND ot OY eng

2) Push-pull Type (Isolated) +Voc — + 00 9 +12 V tw is To EAL To EAI i). o ° g | C2 Voc EQ 2 [ol : : ; roe

3 Meno (a3)

eed * Ref Out (Non Isolated) +Vcc (40 V max.) a3) _ eb op by Ref Out c; re 3 e | eno eno To EAI To EAI 3) Stepdown Chopper +Vec (40 V max.) = + Try O i *y Vout ° - Fao) - F i ) Ey] ic) \\ (3)JOUTPUT ¢,}(8) sonTRotC ty — -t [| Pee To EAI To EAL (7) (Over Current Protection)

If syncronized operation is needed, muster-slave circuit can be used. This circuit is shown bellow. Initially, Ry terminal of slave IC is connected to Pin 14 (Ref Out) and internal oscillator is stopped. +Voc. 12 (14) Wee Beh © Rr (M) Ro] © (M): Muster GND cr 6) T (S) : Slave Ref heres our ol 7 Meno cr] i i next Cr terminal

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16 PIN PLASTIC DIP (300 mil) (uPC494C)

A K P > VOUIO BOE Uy o;r F ae D cB M O~15" P16C-100-300B Voted ITEM | MILLIMETERS INCHES 1) Each lead centerline is located within 0.25 ~ —_———— 2) Item “K" to center of leads when formed cow = parallel. ca 0.50° 7 0.020°6.008 F 1.1 MIN. 0.043 MIN. Te [asi | onsen | 1 4.31 MAX. 0.170 MAX. J 5.08 MAX. 0.200 MAX. Le [zeny | soo ry | m | 0.25 *8:88 0.010 8883 jn | 02 0.01

eee Oeie, i ee 16PIN PLASTIC SOP (375 mil) (upcag4c) 16 9 HDAaaeaAaaAgaA Li ti Pith ft fi fi HWHYURBHEEE OuoOounaooO 1 8 A H e) ! J

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4 ; w c B L O@IM 9) P16GM-50-375B-1 NOTE ITEM MILLIMETERS INCHES Each lead centerline is located within 0.12 D 0.40°8:88 0.016 *8:883 E © 0.4783 0.004 +8888 ee ee ee 1 7.2 0.283 J 1.6 0.063 x [015588 |. 88

rah 5 ORS Rene a sae Ae re eae Cum e Uean muted Ne gi bearer cia, >t a7: vs | 16PIN PLASTIC SOP (300 mil) (uPcag4Gs) 16 Q BPREAARARE HAAR AAA Coe ee ee HBHEKRHEHEE 1 8 A H i) | J Cn ey “ TOO a wu I He Cc B OGM @) P16GM-50-300B-1 Each lead centerline is located within 0.12 at maximum material condition. B 0.78 MAX. 0.031 MAX | > | 0.40 28:68 0.01628:885 F 1.8 MAX. 0.071 MAX. G 1.55 0.061 K 0.207868 0.00878:882 L 0.670? | ; 0.02478:808 cw [ee | 0 |

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[MEMO] No part of this document may be copied or reproduced in any form or by any means without the prior written consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this document. NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a device described herein or any other liability arising from use of such device, No license, either express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC Corporation or of others.