MC3x063A 1.5-A Peak Boost/Buck/Inverting Switching Regulators

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Marcus Hamilton
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1 MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY 05 MC3x03A.5-A Peak Boos/Buck/Invering Swiching Regulaors Feaures 3 Descripion Wide Inpu Volage Range: 3 V o 40 V The MC3303A and MC3403A devices are easy-ouse ICs conaining all he primary circuiry needed for High Oupu Swich Curren: Up o.5 A building simple DC-DC converers. These devices Adjusable Oupu Volage primarily consis of an inernal emperaurecompensaed reference, a comparaor, an oscillaor, Oscillaor Frequency Up o 00 khz Precision Inernal Reference: % a PWM conroller wih acive curren limiing, a driver, and a high-curren oupu swich. Thus, he devices Shor-Circui Curren Limiing require minimal exernal componens o build Low Sandby Curren converers in he boos, buck, and invering opologies. Applicaions The MC3303A device is characerized for operaion Blood Gas Analyzers: Porable from 40 C o 5 C, while he MC3403A device is Cable Soluions characerized for operaion from 0 C o 0 C. HMIs (Human Machine Inerfaces) Device Informaion () Telecommunicaions PART NUMBER PACKAGE (PIN) BODY SIZE Porable Devices SOIC () 4.90 mm 3.9 mm Consumer & Compuing MC3x03A SON () 4.00 mm 4.00 mm Tes & Measuremen PDIP () 9. mm.35 mm 4 Simplified Schemaic () For all available packages, see he orderable addendum a he end of he daa shee. Drive Collecor Swich Collecor S Q Q R Q I pk Sense 00 Swich Emier I pk Oscillaor C T V CC 3 Timing Capacior Comparaor Invering Inpu 5.5-V Reference Regulaor 4 GND

2 MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY 05 Table of Conens Feaures... Applicaions... 3 Descripion... 4 Simplified Schemaic... 5 Revision Hisory... Pin Configuraion and Funcions... 3 Specificaions Absolue Maximum Raings ESD Raings Recommended Operaing Condiions Thermal Informaion Elecrical Characerisics Oscillaor Elecrical Characerisics Oupu Swich Elecrical Characerisics Comparaor Elecrical Characerisics Toal Device Typical Characerisics... Deailed Descripion.... Overview.... Funcional Block Diagram....3 Feaure Descripion....4 Device Funcional Modes... 9 Applicaion and Implemenaion Applicaion Informaion Typical Applicaion Power Supply Recommendaions... Layou.... Layou Guidelines.... Layou Example... Device and Documenaion Suppor.... Relaed Links.... Trademarks....3 Elecrosaic Discharge Cauion....4 Glossary... 3 Mechanical, Packaging, and Orderable Informaion... 5 Revision Hisory Changes from Revision M (January 0) o Revision N Page Added Applicaions, Device Informaion able, Pin Funcions able, ESD Raings able, Thermal Informaion able, Feaure Descripion secion, Device Funcional Modes, Applicaion and Implemenaion secion, Power Supply Recommendaions secion, Layou secion, Device and Documenaion Suppor secion, and Mechanical, Packaging, and Orderable Informaion secion.... Deleed Ordering Informaion able....

3 MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY 05 Pin Configuraion and Funcions D (SOIC) OR P (PDIP) PACKAGE (TOP VIEW) Swich Collecor Swich Emier Timing Capacior GND Driver Collecor I pk V CC Comparaor Invering Inpu DRJ (QFN) PACKAGE (TOP VIEW) Swich Collecor Swich Emier Timing Capacior GND Driver Collecor I pk V CC Comparaor Invering Inpu The exposed hermal pad is elecrically bonded inernally o pin 4 (GND). Pin Funcions PIN NAME NO. TYPE DESCRIPTION Swich Collecor I/O High-curren inernal swich collecor inpu. Swich Emier I/O High-curren inernal swich emier oupu. Timing Capacior 3 Aach a iming capacior o change he swiching frequency. GND 4 Ground Comparaor Invering Inpu 5 I Aach o a resisor divider nework o creae a feedback loop. V CC I Logic supply volage. Tie o V IN. I PK I Curren-limi sense inpu. Driver Collecor I/O Darlingon pair driving ransisor collecor inpu.

4 over operaing free-air emperaure range (unless oherwise noed) () MIN MAX UNIT MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY 05 Specificaions. Absolue Maximum Raings V CC Supply volage 40 V V IR Comparaor invering inpu volage range V V C(swich) Swich collecor volage 40 V V E(swich) Swich emier volage V PIN = 40 V 40 V V CE(swich) Swich collecor o swich emier volage 40 V V C(driver) Driver collecor volage 40 V I C(driver) Driver collecor curren 00 ma I SW Swich curren.5 A T J Operaing virual juncion emperaure 50 C T sg Sorage emperaure range 5 50 C () Sresses beyond hose lised under Absolue Maximum Raings may cause permanen damage o he device. These are sress raings only, and funcional operaion of he device a hese or any oher condiions beyond hose indicaed under Recommended Operaing Condiions is no implied. Exposure o absolue-maximum-raed condiions for exended periods may affec device reliabiliy.. ESD Raings VALUE Human body model (HBM), per ANSI/ESDA/JEDEC JS-00, all pins () 500 V (ESD) Elecrosaic discharge Charged device model (CDM), per JEDEC specificaion JESD-C0, V 500 all pins () () JEDEC documen JEP55 saes ha 500-V HBM allows safe manufacuring wih a sandard ESD conrol process. () JEDEC documen JEP5 saes ha 50-V CDM allows safe manufacuring wih a sandard ESD conrol process..3 Recommended Operaing Condiions UNIT MIN MAX UNIT V CC Supply volage 3 40 V MC3303A 40 5 T A Operaing free-air emperaure C MC3403A Thermal Informaion MC3303A THERMAL METRIC () D DRJ P UNIT PINS R θja Juncion-o-ambien hermal resisance C/W () For more informaion abou radiional and new hermal merics, see he IC Package Thermal Merics applicaion repor (SPRA953)..5 Elecrical Characerisics Oscillaor V CC = 5 V, T A = full operaing range (unless oherwise noed) (see block diagram) PARAMETER TEST CONDITIONS T A MIN TYP MAX UNIT f osc Oscillaor frequency V PIN5 = 0 V, C T = nf 5 C khz I chg Charge curren V CC = 5 V o 40 V 5 C μa I dischg Discharge curren V CC = 5 V o 40 V 5 C μa I dischg /I chg Discharge-o-charge curren raio V PIN = V CC 5 C V Ipk Curren-limi sense volage I dischg = I chg 5 C mv

5 . Elecrical Characerisics Oupu Swich V CC = 5 V, T A = full operaing range (unless oherwise noed) (see block diagram) () MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY 05 PARAMETER TEST CONDITIONS T A MIN TYP MAX UNIT Sauraion volage V CE(sa) I SW = A, pins and conneced Full range.3 V Darlingon connecion Sauraion volage I SW = A, R PIN = Ω o V CC, V CE(sa) Full range V non-darlingon connecion () forced β 0 h FE DC curren gain I SW = A, V CE = 5 V 5 C 50 5 I C(off) Collecor off-sae curren V CE = 40 V Full range μa () Low duy-cycle pulse esing is used o mainain juncion emperaure as close o ambien emperaure as possible. () In he non-darlingon configuraion, if he oupu swich is driven ino hard sauraion a low swich currens ( 300 ma) and high driver currens ( 30 ma), i may ake up o μs for he swich o come ou of sauraion. This condiion effecively shorens he off ime a frequencies 30 khz, becoming magnified as emperaure increases. The following oupu drive condiion is recommended in he non- Darlingon configuraion: Forced β of oupu swich = I C,SW / (I C,driver ma) 0, where ma is required by he 00-Ω resisor in he emier of he driver o forward bias he V be of he swich.. Elecrical Characerisics Comparaor V CC = 5 V, T A = full operaing range (unless oherwise noed) (see block diagram) PARAMETER TEST CONDITIONS T A MIN TYP MAX UNIT 5 C V h Threshold volage V Full range..9 ΔV h Threshold-volage line regulaion V CC = 5 V o 40 V Full range.4 5 mv I IB Inpu bias curren V IN = 0 V Full range na. Elecrical Characerisics Toal Device V CC = 5 V, T A = full operaing range (unless oherwise noed) (see block diagram) PARAMETER TEST CONDITIONS T A MIN MAX UNIT V CC = 5 V o 40 V, C T = nf, I CC Supply curren V PIN = V CC, V PIN5 > V h, Full range 4 ma V PIN = GND, All oher pins open 5

6 MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY 05.9 Typical Characerisics ON-OFF, Oupu Swich On-Off Time (µs) V CE(SAT), Oupu Swich Sauraion Volage (V) V CC = 5 V Pin = V CC Pin 5 = GND T A = 5 C ON OFF C T, Oscillaor Timing Capacior (nf) Figure. Oupu Swich On-Off Time vs Oscillaor Timing Capacior Darlingon Connecion Force ea = V CC = 5 V Pi = V CC 0. Pin, 3 GND 0.00 T A = 5C I C, Collecor Curren (A) Figure 3. Oupu Swich Sauraion Volage vs Collecor Curren (Common-Emier Configuraion) V CE(SAT), Oupu Swich Sauraion Volage (V) I CC, Supply Curren (ma) V CC = 5 V Pin,, = V CC Pin 3, 5 = GND T A = 5C I E, Emier Curren (A) Figure. Oupu Swich Sauraion Volage vs Emier Curren (Emier-Follower Configuraion) C T = nf Pin CC Pi = GND T A = 5C V CC, Supply Volage (V) Figure 4. Sandby Supply Curren vs Supply Volage

7 MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY 05 Deailed Descripion. Overview The MC3303A and MC3403A devices are easy-o-use ICs conaining all he primary circuiry needed for building simple DC-DC converers. These devices primarily consis of an inernal emperaure-compensaed reference, a comparaor, an oscillaor, a PWM conroller wih acive curren limiing, a driver, and a high-curren oupu swich. Thus, he devices require minimal exernal componens o build converers in he boos, buck, and invering opologies. The MC3303A device is characerized for operaion from 40 C o 5 C, while he MC3403A device is characerized for operaion from 0 C o 0 C.. Funcional Block Diagram Drive Collecor Swich Collecor S Q Q R Q I pk Sense 00 Swich Emier I pk Oscillaor C T V CC 3 Timing Capacior Comparaor Invering Inpu 5.5-V Reference Regulaor 4 GND.3 Feaure Descripion Wide Inpu Volage Range: 3 V o 40 V High Oupu Swich Curren: Up o.5 A Adjusable Oupu Volage Oscillaor Frequency Up o 00 khz Precision Inernal Reference: % Shor-Circui Curren Limiing Low Sandby Curren.4 Device Funcional Modes.4. Sandard operaion Based on he applicaion, he device can be configured in muliple differen opologies. See he Applicaion and Implemenaion secion for how o configure he device in several differen operaing modes. Copyrigh , Texas Insrumens Incorporaed

8 MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY 05 9 Applicaion and Implemenaion NOTE Informaion in he following applicaions secions is no par of he TI componen specificaion, and TI does no warran is accuracy or compleeness. TI s cusomers are responsible for deermining suiabiliy of componens for heir purposes. Cusomers should validae and es heir design implemenaion o confirm sysem funcionaliy. 9. Applicaion Informaion 9.. Exernal Swich Configuraions for Higher Peak Curren V OUT R* V OUT R SC R SC V IN V IN * 0 for consan V in a) EXTERNAL npn SWITCH b) XTERNAL npn SATURATED SWITCH (see Noe A) A. If he oupu swich is driven ino hard sauraion (non-darlingon configuraion) a low swich currens ( 300 ma) and high driver currens ( 30 ma), i may ake up o μs o come ou of sauraion. This condiion will shoren he off ime a frequencies 30 khz and is magnified a high emperaures. This condiion does no occur wih a Darlingon configuraion because he oupu swich canno saurae. If a non-darlingon configuraion is used, he oupu drive configuraion in Figure b is recommended. Figure 5. Boos Regulaor Connecions for I C Peak Greaer Than.5 A

9 MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY 05 Applicaion Informaion (coninued) V OUT V IN R SC R V SC OUT V IN a) EXTERNAL npn SWITCH b) EXTERNAL pnp SATURATED SWITCH Figure. Buck Regulaor Connecions for I C Peak Greaer Than.5 A V OUT V OUT V IN 3 V IN a) Exernal NPN Swich b) Exernal PNP Sauraed Swich Figure. Invering Regulaor Connecions for I C Peak Greaer Than.5 A 9. Typical Applicaion 9.. Volage-Invering Converer Applicaion S Q R Q Q V IN 4.5 V o.0 V R SC F V CC I pk C T Oscillaor _ Comparaor.5-V Reference Regulaor L H pf N R. k R 953 C O 000 F V OUT V/00 ma.0 H 00 F V OUT =.5 ( R R ) Opional Filer Copyrigh , Texas Insrumens Incorporaed 9

10 MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY 05 Typical Applicaion (coninued) Figure. Volage-Invering Converer 0

11 Typical Applicaion (coninued) 9... Design Requiremens The user mus deermine he following desired parameers: V sa = Sauraion volage of he oupu swich V F = Forward volage drop of he chosen oupu recifier V on Iou max off 0.3 Ipkswich in min I V V ou in on on off V pk swich I 9 V f 5 on 4 0 V V sa ou on ripple pp R.5 R off F sa on off off on max MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY 05 The following power-supply parameers are se by he user: V in = Nominal inpu volage V ou = Desired oupu volage I ou = Desired oupu curren f min = Minimum desired oupu swiching frequency a he seleced values of V in and I ou V ripple = Desired peak-o-peak oupu ripple volage. The ripple volage direcly affecs he line and load regulaion and, hus, mus be considered. In pracice, he acual capacior value should be larger han he calculaed value, o accoun for he capacior's equivalen series resisance and board layou Deailed Design Procedure CALCULATION on / off ( on off ) off on C T I pk(swich) R SC L (min) C O VOLTAGE INVERTING V ou See Figure Copyrigh , Texas Insrumens Incorporaed

12 MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY Applicaion Performance V IPK, Curren Limi Sense Volage (mv) V CC = 5 V I CHG = I DISCHG T A, Ambien Temperaure (C) Figure 9. Curren-Limi Sense Volage vs Temperaure TEST CONDITIONS RESULTS Line regulaion V IN = 4.5 V o V, I O = 00 ma 3 mv ± 0.% Load regulaion V IN = 5 V, I O = 0 ma o 00 ma 0.0 V ± 0.09% Oupu ripple V IN = 5 V, I O = 00 ma 500 mv PP Shor-circui curren V IN = 5 V, R L = 0. Ω 90 ma Efficiency V IN = 5 V, I O = 00 ma.% Oupu ripple wih opional filer V IN = 5 V, I O = 00 ma 0 mv PP

13 MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY Sep-Up Converer Applicaion 0 H L 0 S Q Q R Q N59 R SC 0. I pk C T 3 V IN V 00 F V CC _ Comparaor.5-V Reference Regulaor C T 500 pf 5 4 R. k R 4 k C O 330 F V OUT V/5 ma.0 H 00 F V OUT =.5 ( R R ) Opional Filer 9... Design Requiremens Figure 0. Sep-Up Converer The user mus deermine he following desired parameers: V sa = Sauraion volage of he oupu swich V F = Forward volage drop of he chosen oupu recifier The following power-supply parameers are se by he user: V in = Nominal inpu volage V ou = Desired oupu volage I ou = Desired oupu curren f min = Minimum desired oupu swiching frequency a he seleced values of V in and I ou V ripple = Desired peak-o-peak oupu ripple volage. The ripple volage direcly affecs he line and load regulaion and, hus, mus be considered. In pracice, he acual capacior value should be larger han he calculaed value, o accoun for he capacior's equivalen series resisance and board layou. Copyrigh , Texas Insrumens Incorporaed 3

14 MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY Deailed Design Procedure CALCULATION STEP UP on / off Vou V Vinmin V ( on off ) off on C T I pk(swich) R SC L (min) C O V on Iou max off 0.3 Ipkswich in min I on on off V pk swich I 9 V F Vin min f 5 on 4 0 sa ou on ripple pp R.5 R off on off off V ou See Figure 0 sa on max Applicaion Performance TEST CONDITIONS RESULTS Line regulaion V IN = V o V, I O = 5 ma 30 mv ± 0.05% Load regulaion V IN = V, I O = 5 ma o 5 ma 0 mv ± 0.0% Oupu ripple V IN = V, I O = 5 ma 400 mv PP Efficiency V IN = V, I O = 5 ma.% Oupu ripple wih opional filer V IN = V, I O = 5 ma 40 mv PP 4

15 MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY Sep-Down Converer Applicaion S Q Q R Q V IN 5 V R SC F V CC I pk C T Oscillaor _ Comparaor.5-V Reference Regulaor N59 3 C T 40 pf L 0 H 5 4 R. k R 3. k C O 40 F V OUT 5 V/500 ma.0 H 00 F V OUT =.5 ( R R ) Opional Filer Design Requiremens Figure. Sep-Down Converer The user mus deermine he following desired parameers: V sa = Sauraion volage of he oupu swich V F = Forward volage drop of he chosen oupu recifier The following power-supply parameers are se by he user: V in = Nominal inpu volage V ou = Desired oupu volage I ou = Desired oupu curren f min = Minimum desired oupu swiching frequency a he seleced values of V in and I ou V ripple = Desired peak-o-peak oupu ripple volage. The ripple volage direcly affecs he line and load regulaion and, hus, mus be considered. In pracice, he acual capacior value should be larger han he calculaed value, o accoun for he capacior's equivalen series resisance and board layou. Copyrigh , Texas Insrumens Incorporaed 5

16 MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY Deailed Design Procedure CALCULATION on / off ( on off ) off on C T STEP DOWN V ou on on off V Vinmin Vsa V f off on off off 5 on 4 0 F ou I pk(swich) R SC L (min) C O I ou max Vinmin Vsa V Ipkswich I I swich pk on off V 0.3 pk swich ripple pp ou R.5 R V ou See Figure on max Applicaion Performance TEST CONDITIONS RESULTS Line regulaion V IN = 5 V o 5 V, I O = 500 ma mv ± 0.% Load regulaion V IN = 5 V, I O = 50 ma o 500 ma 3 mv ± 0.03% Oupu ripple V IN = 5 V, I O = 500 ma 0 mv PP Shor-circui curren V IN = 5 V, R L = 0. Ω. A Efficiency V IN = 5 V, I O = 500 ma 3.% Oupu ripple wih opional filer V IN = 5 V, I O = 500 ma 40 mv PP

17 MC3303A, MC3403A SLLS3N DECEMBER 004 REVISED JANUARY 05 0 Power Supply Recommendaions This device acceps 3 V o 40 V on he inpu. I is recommended o have a 000-µF decoupling capacior on he inpu. Layou. Layou Guidelines Keep feedback loop layou race lenghs o a minimum o avoid unnecessary IR drop. In addiion, he loop for he decoupling capacior a he inpu should be as small as possible. The race from V IN o pin of he device should be hicker o handle he higher curren.. Layou Example C T 3 4 MC3303A F VIN VOUT C O R R Figure. Layou Example for a Sep-Down Converer Copyrigh , Texas Insrumens Incorporaed

18 PACKAGE MATERIALS INFORMATION -Oc-05 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Reel Diameer (mm) Reel Widh W (mm) A0 (mm) B0 (mm) K0 (mm) P (mm) W (mm) Pin Quadran MC3303ADR SOIC D Q MC3303ADR SOIC D Q MC3303ADRJR SON DRJ Q MC3403ADR SOIC D Q MC3403ADRJR SON DRJ Q Pack Maerials-Page

19 PACKAGE MATERIALS INFORMATION -Oc-05 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Lengh (mm) Widh (mm) Heigh (mm) MC3303ADR SOIC D MC3303ADR SOIC D MC3303ADRJR SON DRJ MC3403ADR SOIC D MC3403ADRJR SON DRJ Pack Maerials-Page

Silicon Diffused Power Transistor

Silicon Diffused Power Transistor PHE39 GENERAL DESCRIPTION The PHE39 is a silicon npn power swiching ransisor in he TO22AB envelope inended for use in high frequency elecronic lighing ballas applicaions, converers, inverers, swiching