ON Power SwitchingSwitcher Solution

For consumer electronics

Andy BukAsia Product Marketing Manager

April 2004

Asian Business UnitAnalogue Products

Marketing Team

US Business Unit

Analogue ProductsMarketing Headquarter

PHX

Power ConvesionAc/dc

PortableCellular Phone/PDA

Power Linear Power SwitchingComputing/ Telecom/ High power switching

Kelvin Tsiang

IPPDMOSFET/Misc

KH HoManson Chan Joe Chung Andy Buk Kenneth Ng

Power Switching Devices Focus Area

30 1400200-250 600 80060 100 500 900

5

20

15

10

25

30

35

>40

Cellular phone

Handheld productsDC-DC converter,Notebook PC, Cosumer products

PC Motherboard

VRM/phase

Automotive powerSteering

DC 48V input DC-DC converter,Color monitor image correction switch

OA equiments,Automotive parts (motor solenoid

driver,DC12-24V

input DC-DC)

Back-up Power Supply

Inverter for Lighting

AC adapter(Notebook, Portable

VCD,DVD)

AC200V power supply

Color monitor(high voltage circuit)

AC100V SMPS

Current (A)

VDS (V)

Focus area

Comparator

Op-Amp

Data Transmission

Voltage Reference/Feedback Controller

Analog Switch & Multiplexer

Battery ProtectionCharge Controller

Battery Management

Timer

DC-DC/ Non-Isolated Switching

Buck (step-down)Boost (step-up)

InvertingMulti-Topology

Power Factor Controller

AC-DC/ Isolated Switching

Flyback/ ForwardPush-Pull

Half-Bridge

Low Dropout Regulator (LDO)

Fixed Output VoltageAdjustable Voltage

Multiple Output

Smart Card/ SIM Card

Power & InterfaceLevel Shifters & Interface

Motor Controller

Stepper MotorBrushless DC Motor

DC Servo MotorUniversal Motor

Linear Voltage Regulator

Fixed Output VoltageAdjustable Voltage

Computer

Buck for MicroprocessorGate Driver

Memory and I/O power

Automotive

Smart Driver, Pre-driverSwitching Controller

Sensor Interface & Detector

Special LDODrivers

MOSFET/ IGBT DriverTRIAC Driver

Load/ Relay DriverLCD/ Backlight Driver

White LED DriverOvervoltage Protection

Undervoltage Reset

Voltage Supervisory

Over/ Under Voltage IndicationSupervisory withVoltage regulator

ON Semiconductor Analog Product Tree

Signal Conditioning &

Interface

Power Management for Special Market

Power Management for

Multi-Market

Wireless & Portable

Audio AmplifierRF Power Mgmt & Control

Power Mgmt ASICs

Charge Pump

Special LDOSwitching Controller

Telecom

Switching Controller for Power Module

Hot Swap Controller/ FET

P.17

P.18

P.19

P.20

P.21

P.2

P.15

P.3

P.16

P.14

P.12

P.13

P.7P.5, 6

P.4

P.8

P.11

P.10

P.9

Power Factor Correction

MC33362 MC33363A/ BNCP1000/ 1/ 2NCP1050/ 1/ 2/ 3/ 4/ 5NCP1010/ 1/ 2/ 3/ 4

Internal switch

External switchMC33364 MC44608 NCP1200 NCP1200A NCP1203 NCP1205 NCP1207 NCP1216NCP1217 NCP1377/BNCP1378NCP1230

Single-stage flyback

Boost pre-regulator

Follower boost modeMC33260

NCP1650

NCP1651

CS2841B *CS2842A/ 3A/ 4CS52843NCV3843 *UC2842A/ 3A/ 4/ 5UC2842B/ 3B/ 4B/ 5BUC3842A/ 3A/ 4/ 5UC3842B/ 3B/ 4B/ 5B

Primary side CS3524AMC33025MC34025SG3525ASG3526TL494 / NCV494 *TL594

CS5101 @

Flyback/ forward(low power)

Push-pull(high power)

Secondary side

Half-bridge(medium power)

MC33067MC34067

2843 compatible

Non-2843 compatible

CS51021A/ 2A/ 3A/ 4A @CS51220 @CS51221 @CS5124/ 6 @MC33023 MC34023MC44603 MC44603AMC44604 MC44605NCP1212 NCP1215NCP1231

* Automotive@ Telecom, Power Module

Max 250V~700V integrated startup (AC inputs)

External startup, external switch

Average current mode

Coming soon

MC33262MC34262MC33368

Critical mode

AC-DC/ Isolated Switching Controllers

Max 150V~200V integrated startup (Telecom DC inputs)

NCP1030 @ NCP1031 @NCP1560 @

Integrated startup

External startup

NCP1561 @

For details, please also refer to SGD514/D

Coming soon

CS51031 # CS51033 #

Multi-topology(step up, down or

inverting)

MC33060AMC34060A

Buck(step down)

Boost(step up)

CS5171CS5173NCP5173NCP1442NCP1444

Cuk(inverting)

Sync Rect Non-Sync Rect

CS5211 # CS5212 #NCP1570 # NCP1571 #NCP1573 # NCP1575 #NCP5211A # NCP1580

Single, external switch

DualCS5421 * CS5422 *NCP5424 * NCP5425 * +

External switch

Internal switchCS51411 CS51412CS51413 CS51414MC33166 MC34166MC33167 MC34167 Low voltage/ low power

General

NCP1400A + NCP1402 +NCP1403 + NCP1410 +NCP1411 + NCP1417 +NCP1421 + NCP1450A +NCP1404 + NCP1406 +NCP1423 +

CS5172CS5174NCP1443NCP1445

General

External switch

Internal switch

MC33063AMC34063ANCV33063A *MC33163MC34163NCV33163 *

* Automotive# Computer+ Wireless & Portable

Low voltage/ low power

NCP1500 + NCP1501 + NCP1550 +NCP1510 + NCP1511 + NCP1512 + NCP1520 +NCP1530 +

General

DC-DC/ Non-Isolated Switching Controllers

CS2001 *CS5111 *CS5112 *

With 5V/ 100mA linear regulator

For details, please also refer to SGD514/D

NCV8800 *Single, internal switch

NCP5428

Fixed Output Voltage Adjustable Voltage

100mAMC78FCxxMC78LxxANCV78L05 *

500mAMC78MxxA

1AMC78xx/ ANCV7805 *

3AMC78Txx/ ALM323/ A

100mAMC79LxxA

500mAMC79Mxx

1AMC79xx/ A

Positive Output Negative Output Positive Output Negative Output

100mALM317L

500mALM317M

1.5ALM317NCV317 *

3ALM350

1.5ALM337

Linear Voltage Regulator

* Automotive

Fixed Output Voltage

* Automotive# Computer+ Wireless & Portable(1) w/ switching regulator(2) w/ supervisory

7ACS5207 #

6ACS5206 #

5ACS5205 #

4ACS5204 #

3A

CS5203A #CS5253B #NCP630G #NCP631 #

1.5ACS52015 #NCP1086

1ACS5201 #NCP1117

1.2AMC33566 #

750mACS403 *CS8122 *CS8126 *CS8129 *LM2935

500mACS5231 #CS5233 #CS8140 *CS8141 *MC33267NCV8141 *

300mA

CS8120 *MC33275MC33375NCP2860 +NCV33275 *

80mAMC78LCxxNCP4561NCP502NCP512NCP552NCP553NCP562NCP563

100mACS2001 * (1)CS5111 * (1)CS5112 * (1)CS8101 *CS8151 *CS8221 *CS8311 *CS9201 *CS9202 *L4949LM2931LP2950LP2951MC33160 (2)MC33761MC78L05NCP4561 +NCV2931 *NCV2951 *NCV4949 *NCV78L05A *

200mAMC33565 #

150mACS8321 *MC33263NCP500NCP511NCP551 NCP561NCV4279 *NCV4299 *NCP5426 +NCV8501 *NCV8502 *

800mAMC33269MC34268 #NCV33269 *

ext. transistorMC78BCxx

1 of 2Low Dropout Regulator (LDO)

250mANCV8508 *

50mANCV8184 *

Coming soon

450mANCV4275 *

400mANCV8503 *NCV8504 *NCV4276 *

Adjustable Voltage Multiple Output

CS8363 * dual 3.3VCS8481 * 3.3V & 5VCS8183 * dual adjustableCS8281 * dual 5VCS8361 * dual 5VCS8391 * dual 5VCS8371 * 5V & 8VCS8147 * 5V & 10VCS8251 * 5V & 10VCS8156 * 5V & 12VCS8161 * 5V & 12VLM2935 * dual 5VMC33567 # 1.5V & 1.8VMC33762 + dual 2.5, 2.8, 3, 3.3, 3.6, 5VNCV8509 * dual 1.8, 2.5, 2.6, 3.3, 5V

7ACS5207/ A #CS5257A #

6ACS5206 #

5ACS5205/ A #

4ACS5204 #

3ACS5203A #CS5253B #NCP630A #

1.5ACS52015 #NCP1086

1ACS5201 #NCP1117

10ACS5210-1 #CS52510-1 #

8ACS5208 #CS5258 #

200mACS8182 *

100mACS8271 *LM2931/ A

2 outputs

3 outputs

5 outputsMC33765 + all 2.8V, 3V

NCP4523 + all 2.8V, 3V, or (2.35, 2.8, 2.8V)

2 of 2Low Dropout Regulator (LDO)

150mANCV8501 *NCV8502 *

* Automotive# Computer+ Wireless & Portable

Coming soon

400mANCV8503 *NCV8504 *NCV4276 *

Buck for Microprocessor

2-PhaseCS5302CS5308CS5322CS5331CS5332NCP5322ANCP5332A

CS51311CS51312CS51313CS5150HCS5151HCS5155HCS5156HCS5157HCS5158CS5159CS5160CS5161CS5161HCS5165HCS5166HMC33470

Please also refer to DC-DC Switching tree and LDO tree for related products

Memory and I/O Power Mgmt

3-PhaseCS5301CS5303CS5305NCP5306 CS5323

1-Phase 4-PhaseCS5307

Computer

Coming soon

NCP5351 (5V)NCP5355 (12V)NCP3418NCP3418A

2/3/4-PhaseNCP5314NCP5318

4/5/6-Phase

NCP5316NCP5319

Gate Driver

NCP5200NCP5201NCP5206NCP5208NCP5203NCP5210NCP5220NCP5209

Special LDO

Please refer to LDO tree

Dual Band GaAs P.A.MC33170

RF Power Mgmt & Control

RF Signal DetectionNCS5000

Charge Pump

MAX1720NCP1729

Inverter With enable

MAX828MAX829

Inverter Without enable

Audio Amplifier

Balanced Modulators/ Demodulators

MC1496

Audio Amp Driver

Vibrator Motor Driver

Others

NCP5426

NCP2860

Wireless & Portable

RF Detector + ControllerNCS5021

Power Mgmt ASICsNCP4100NCP4110NCP4111NCP4115

Switching Controller

Please refer to DC-DC Switching tree for related productsNCP2890

NCP2820NCP4894

Mono

NCP2809Stereo Coming soon

Lithium Battery Protection IC

ChargeControl

1-cell battery packNCP800NCP802

NiCd / NiMH

Li-ion

MC33340MC33342

NCP4300ANCP1800

Battery Management

Power Management& Interface IC

MC33560NCN6000NCN6001NCN6004A

Level Shifters for Smartcard Interface

NCN6010NCN6011

Smart Card/ SIM Card

Coming soon

Switching Controller for Power Module

Please also refer to AC-DC/ Isolated switching controllers tree

Telecom

NCP1560

Low VccFF V-mode

External Startup

I-mode Secondary side

BiasRegulator

Internal Startup

Sync RectForward

Push-pull(High power)

CS51220CS51221

CS51021A/ 2A/ 3A/ 4ACS5124/ 6

CS5101NCP1561NCP1030NCP1031

Hot Swap Controller/ FET

NIS5101

CS1107

NCV7701NCV7702

Air Core Gauge Driver

CS4121CS4122CS4192CS8190CS8191

CS4161CS8441

CS2082

IGBT IgnitionPre-DriverCS8312

Special LDO

Switching Controller with

Linear Regulator

Alternator Voltage Regulator FET Driver

Stepper Motor/Odometer Driver

Dual Airbag Deployment ASIC

Lamp Driver

H-bridge Driver

CS2001CS5111CS5112

CS299CS1108

CS3341CS3351CS3361CS387

Please refer to LDO tree

CS209A

Proximity Detector

CS1124

Dual Variable-Reluctance Sensor

Interface

CS4124CS7054NCV33033NCV33035NCV7701NCV7702

Motor Driver

CS1112

Low-side Driver

CS8240

High-side Driver

Relay Driver

CS59201

Winchester Servo

Preamplifier

NCV7601NCV7612

Quad Driver

Automotive

NCV7310NCV7311

LIN Transceiver

Coming soonNCV33152

MOSFET Driver

For details, please also refer to SGD516/D

BrushlessDC MotorMC33033MC33035MC33039NCV33033 *NCV33035 *NCV33039 *

Stepper Motor

MC3479

Universal Motor

TDA1085C

DC Servo Motor

MC33030

Motor Control

* Automotive

MOSFET / IGBT Driver

MC34271

LCD/ Backlight Display Driver

UAA2016

Half-waveTRIAC Driver

MC1413 / BNCV1413B *MDC3105MDC3205

Load / Relay Driver

MC33151MC33152NCV33152 *MC33153MC34151MC34152NCP5351NCP5355NCP3418NCP3418A

NCP5008NCP5009NCP5007

White LED Driver

Drivers

* Automotive

OVP by turn on paralleled SCR

MC3423

Over-Voltage & Under-Voltage Indications

MC33161MC34161NCV33161 *

Fixed threshold

NCP345

Programmable threshold

NCP3712A

6.85V

OVP by turn off series transistor

3 modes selection

MAX809/ MAX810MC33064/ MC34064/ NCV33064 *MC33164/ MC34164/ NCV33164 *NCP300/ NCP301 (replaces MC33464)NCP304/ NCP305 (replaces MC33460/1)NCP803

NCP302/ NCP303 (replaces MC33465)

NCP1232

Without delay

With delay

With delay & watchdog

MAX707/ MAX708MAX811/ MAX812

Programmable delay

Fixed delay

Under-Voltage Reset

Over Voltage Protection

Supervisory with 5V 100mA voltage regulator

MC33160MC34160

Voltage Supervisory

* Automotive

Coming soon

Coming soonNCP112: 3.3V, 5V, 12V “Housekeeping” IC

fixed voltage adjustable voltage

MC1403/ BLM285-2.5LM385-2.5

2.5V

NCP100

1.235V

LM285-1.2LM385-1.2

0.9 to 6V

TLV431A

1.24 to 16V

NCV1009 *NCV431A *TL431/ A/ B

2.5 to 36V

Either voltage or current Both voltage and current

NCP100

0.9V reference

TLV431A

1.24V reference

NCV1009 *NCV431A *TL431/ A/ B

2.5V reference

NCP4300A

2.6V reference

MC33341

External reference

Feedback ControllersVoltage Reference

Voltage Reference/ Feedback Controller

* Automotive

MC33201/ 2/ 4MC33501/ 2/ 3NCS2001NCS7101NCS2002 NCV33202/ 4 *

MC33071/ 2/ 4MC34071/ 2/ 4MC33071A/ 2A/ 4AMC34071A/ 2A/ 4A MC33272A/ 4A

Low voltage Rail to Rail

Low Power

MC33171/ 2/ 4MC33178/ 9

High Current

TCA0372

Low Noise

LM833MC33077/ 8/ 9MC33178/ 9MC33272A/ 4A

High SpeedGeneral Purpose

LM2902/ 4LM201A/ 301ALM224/ 324/ 324ALM258/ 358MC3303/ 3403NCV2902/ 4*

<1V

MC33501/ 2/ 3NCS2001

Op-Amp

* Automotive

Single Dual Quad

LM211/ LM311NCS2200/ 1/ 2/ 3NCS2300/ 1/ 2/ 3

LM293/ LM393LM2903/ NCV2903 *

LM239/ LM339LM2901/ NCV2901 *MC3302

Coming soon

Comparators

* Automotive

MC1455NCV1455 *

Direct replacement for NE555

Timer

* Automotive

MC1489/A

Receivers Drivers

MC1488MC3488A

RS-232

MC3488AMC26LS30

RS-422/3

MC75172BMC75174B

RS-485

RS-232

Data Transmission

MC14016BMC14051BMC14052BMC14053BMC14066BMC14067B MC14512BMC14551B

Standard CMOS3-18 Volt300Ω Ron

50MHz

HCMOS/VHC2-12 Volt100Ω Ron100MHz

Improved PerformanceSingle or Split Supply

MC74HC4051AMC74HC4052AMC74HC4053AMC74LVX4066AMC74VHC4051MC74VHC4052MC74VHC4053MC74VHC4066

Charge Control

MC74HC4851MC74HC4852

Single or Split SupplyImproved Linearity

MC74HC4316A

1-Gate Single SupplySPST-SC88a/ SOT-23

MC74VHC1G66MC74VHC1GT66NLAS4501NLAST4501

Multiple SwitchesSmall PackagesNLAS323,4,5NLAS2066NLAS1053NLASB3157NLAS4599NLAST4599NLAS44599NLAST44599NLAS4684

LVX-Family2-6 Volt

<20Ω Ronup to 200MHz

MC74LVX4051MC74LVXT4051MC74LVX4052MC74LVX4066MC74LVXT4052MC74LVX4053MC74LVXT4053

Wireless2-6 Volt

<40Ω Ron200MHz

Analog Switch & Multiplexer

For details, please also refer to BRD8007/D

CS5211 – Sync Buck Cntrl.Full-Featured, 1V Ref,Remote Sense, OCP,

Up to 750kHz switching,5V or 12V Operation

14 SOIC, Bipolar

CS5212 – Sync Buck Cntrl.Full-Featured, 1V Ref,Remote Sense, OCP,

Up to 750kHz switching,3.1 – 7V Operation14 SOIC, Bipolar

NCP1571 – Sync Buck Cntrl.Cost-Effective, 1V Ref,

200kHz Fixed Frequency,12V/5V Operation8 SOIC, Bipolar

NCP1575 – Sync Buck Cntrl.Cost-Effective, 1V Ref,

200 - 400kHz Prog. Frequency,12V only or 12V/5V Operation

8 SOIC, Bipolar

NCP1580 – Sync Buck Cntrl.Cost-Effective, 0.8V Ref,350 or 700kHz switching,

4.5 – 13.2V OperationBoost Pin to 28V

8 SOIC, PowerSense 5RTM Q3 2004

NCP1581/ 1581A –Sync Buck Cntrl.Full-Featured, 0.8V Ref,

Up to 700kHz prog. switching,OCP, 4.5 – 13.2V Operation

Boost Pin to 28VQFN, PowerSense 5

Concept

NCP1590 – Sync Buck Cntrl.Targeted to Notebooks,Light Load Efficiency,

0.8V Ref, OCPUp to 700kHz prog. switching,

4.5 – 30V OperationQFN, PowerSense 5LV

Concept

Time

Perf

orm

ance

Note – Product Family Indicated by Color

Single Phase Controller RoadmapNCP5211A – Sync Buck

Cntrl.Full-Featured, .8V Ref, Remote Sense, OCP,Up to 750kHz switching, 70% max

duty cycle, 5V or 12V Operation14 SOIC, Bipolar

<1A Step Down

Step down from 5V– LDOs– Buck Regulators : CS5141X

Step down from 3.3V– LDOs– Buck Controllers : CS51033

CS51411~514141.5A, 280 and 560kHz Low Voltage Buck

Regulators

ApplicationsBuck converterInverting converterPortable computersBattery powered systemsBattery chargerDistributed power

Features2% error amp reference voltage tolerance

Switch frequency decrease of 4:1 in short circuit conditionsBOOST lead allows “Bootstrapped” operationBias function providedSync function providedShutdown lead providedLow 85uA quiescent currentThermal shutdown

Ordering InformationSee datasheet CS51411/D for specific device number selection

BenefitsTight tolerance for demanding VOUT requirementsReduces short circuit power dissipationMaximizes efficiency

For parallel supply operation or noise minimizationProvides Power-Down optionMinimizes current drain during power downProvides extra level of device protection

DescriptionBuck regulators employing proprietary V2 TM architecture for ultra-fast transient response, improved

regulation and simplified designWide voltage and frequency rangeSoft start operationChoice of 0°C to 70°C or -40°C to 85°C ambient temp ranges

Basic V2 TM ControlOuter Loop•High Gain/Low BW manages DC accuracy•Comp Cap provides Softstart/Fault timing

Inner Loop•Pulse-by-Pulse Duty Cycle Adjustment Reacts to

changes in line or load•100nS Transient Response

CS51411/2/3/4 Application Circuit4.5V-16V to 3.3V/1A

4.5V-16V

ENABLE

3.3V

U1

CS51412/14

12

5

8 7 6

4

3

Boo

stVin

SHDNB

Vc

VFB

Gnd

BIAS

VswC22X22uF

C3100uF

C40.1uF

L1 15uH

D1 1N4148

C10.1uF

D3

1N5821

D2 1N4148

R12.05K

R21.27K

Boost Converter

1.5 Amp CS5171CS5172CS5173CS5174NCP5173A

4 AmpNCP1442NCP1443NCP1444NCP1445

<1.5A Step Up

CS517X

CS5171~51741.5A, 280/560kHz Boost Regulators

ApplicationsBoost, buck, flyback, SEPIC, and

inverting convertersDSL and ADSL modemsCable modemsLaptop computersNetwork equipment

FeaturesHigh operating frequency

Internal thermal shutdownOn-board power switch

BenefitsAllows use of small external passive componentsMinimizes external components; provides over-temperature protection Eliminates external MOSFETs

DescriptionBoost regulators with internal power switch providing up to 1.5A output

Wide input voltage range of 2.7V to 30VIntegrated power switch allows for minimum current limit of 1.5ACS5171,2 has a 280kHz operating freq and max sync range of 500kHzCS5173,4 has a 560kHz operating freq and max sync range of 1MHzMax operating current is 5.5mA; max shutdown current of 100uACS5171~5174 family can regulate positive and negative voltagesChoice of 0°C to 70°C or -40°C to 85°C ambient temp ranges

VersionsSee datasheet CS5171/D for specific device number selection

NCP51731.5A, 280/560kHz Boost Regulators

ApplicationsBest for LCD PanelBoost, buck, flyback, SEPIC, and

inverting convertersDSL and ADSL modemsCable modemsLaptop computersNetwork equipment

FeaturesHigh operating frequency

Internal thermal shutdownOn-board power switch

BenefitsAllows use of small external passive componentsMinimizes external components; provides over-temperature protection Eliminates external MOSFETs

DescriptionLow Profile of less than 1mm height !Boost regulators with internal power switch providing up to 1.5A output Wide input voltage range of 2.7V to 30VIntegrated power switch allows for minimum current limit of 1.5ANCP5173 has a 560kHz operating freq and max sync range of 1MHzMax operating current is 5.5mA; max shutdown current of 100uA

Choice of -40°C to 85°C ambient temp ranges

VersionsSee datasheet NCP5173 for specific device number selection

SlopeCompensation

CS5171/2/3/4 Block Diagram

Synchronization&

Shutdown

FrequencyFoldback

Error amp output is clampedto provide cycle by cyclemaximum current limit

External Adjustment to CS5171/2/3/4

Alter Max Current Limit Increase Slope Compensation Add Soft Start

CS5171/3 Boost Regulator3.3Vto 5V/400mA

C1

0.01uF

R23.6k

R1

5k

R31.3k

L1 22uH

D1

MBRS120T3

C40.1uF

C2

200pF

J2

V in

1

J1

1

J5

Gnd1

J4

+5V

1

C710uF

C510uF

C610uF

CS5171/3

1

2

3

4 5

6

7

8VC

FB

NC

SS VCC

AGND

PGND

VSW

J3

Gnd

1

3.3V

thin pak TP4

ceramic

ceramic ceramic

CS5171/3 Flyback Converter5V to ±12V/200mA

CS5171 Demoboard3.3 V to 5V/400mA

0.7”

0.7”

CS5171 Demoboard3.3 V to 5V/400mA

Efficiency vs. Current

70

80

90

0.01 0.06 0.11 0.16 0.21 0.26 0.31 0.36 0.41 0.46

Current (A)

Effic

ienc

y (%

)

CS5171/3 Flyback Converter5V to ±12V/200mA

CS5171 ±12V Boost Converter

-12V is generated by charge pump circuit,no transformer is required.

<4A Step Up

NCP144X Series

NCP1442~14454A, 280 and 560kHz Boost Regulators

Distributed powerPortable computers

FeaturesIntegrated 4A power switch2% error amp reference voltage toleranceSynchronization function

NCP1442/3 to 500kHz; NCP1443/4 to 1MHzShutdown capability reduces max current draw to 50uASwitch frequency decrease in short circuit conditionsThermal shutdownNew PowerFLEX™ surface mount package

BenefitsNo external FET saves cost and board spaceTight tolerance for demanding VOUT requirementsUse smaller passive components and save spaceAllows design flexibilityAllows system power down for energy savingsReduces short circuit power dissipationProvides extra level of device protectionLow profile D2Pak-type package saves space

DescriptionCurrent mode boost regulators with integrated 4A switch. Options include a choice between 280kHz or 560kHz and either positive or negative voltage regulation. A wide (2.7V – 30V) input voltage range accommodates many applications. Available in TO220-7 and Powerflex-7 surface mount (Powerflex is a low-profile D2PAK sometimes called SPAK).

ApplicationsBoost converterInverting converterBattery powered systems

Block Diagram

Pin Description:Vc: For loop compensation, current limit and soft start.FB: Senses positive Vout (ref. to 1.276V). When VFB < 0.4V, fsw drops to 20%.Test: Connect to a 2.0 - 6.0V source to turn-off internal oscillator & leave power switch running.NFB: Senses negative Vout (ref. to –2.5V). When VNFB > -0.65V, fsw drops to 20%.Gnd: Internally connected to metal pad of package for better power dissipation.Vsw: Connects to collector of power switch. Open voltage can be as high as 40V.SS: Use to synchronize part to 2xbase frequency. A TTL low will shut down part and put it in low current mode.Vcc: Supplies power to part and requires a bypass cap to ground.

Typical Application

3.3V to 5.0V/1.5A Boost Converter

Single Buck Controller

Sync Rect<3A Step Down

Step down from 5V up to 20V– LDOs– Buck Regulators : CS51031

Step down from 3.3V– LDOs– Buck Controllers : CS51033

CS51031 - Buck ControllerKey Features

Programmable Oscillator (up to 700 kHz)No stability compensation requiredWide input voltage : 4.5V~20VLossless short circuit protectionVcc monitorSeparate pin for power VccProgrammable Soft StartPackage : SO8 narrow and PDIP8

Typical ApplicationsDistributed powerBattery chargerTelecommunications systems

CS51031 Application Circuit5V-12V to 3.3V/3A

CS51033 - Buck ControllerKey Features

Programmable Oscillator (up to 700 kHz)No stability compensation required3.3V input voltageLossless short circuit protectionVcc monitorProgrammable Soft StartPackage : SO8 narrow and PDIP8

Typical ApplicationsDistributed powerBattery chargerTelecommunications systems

CS51033 Application Circuit3.3V to 1.5V/3A

Charge pump addedto enhance MOSFET driving

>3A Step Down

Step down from 5V– Synchronous Rectification Controller :

• CS5211 (single channel)• CS5422 (dual channel)

Step down from 3.3V– Synchronous Rectification Controller : CS5212

CS5211Single Voltage Input Synchronous Buck Controller

Key FeaturesN-Ch Synchronous BuckProgrammable Fixed Switching Frequency of 150 to 750KHzRemote senseProgrammable Soft StartV2 Control Topology1.0V 1.5% Internal ReferenceLossless Inductor Sensing Over-current ProtectionHicup Mode Short Circuit Protection5V to 12V OperationUVLO with HysteresisPackage : SO14

CS5211 Application Diagram

Booststrap for high sideN-ch MOSFET driving

CS5211 Demoboard5V to 2.5V/8A

NCP5211ASingle Voltage Input Synchronous Buck Controller

Key FeaturesN-Ch Synchronous BuckProgrammable Fixed Switching Frequency of 150 to 750KHzRemote senseProgrammable Soft StartMax Duty cycle clamped to 70%0.8V 1.0% Internal ReferenceLossless Inductor Sensing Over-current ProtectionCycle by cycle Mode Short Circuit Protection5V to 12V OperationUVLO with HysteresisPackage : SO14

ImprovedVersion of

CS5211

NCP5211A Application Diagram

CS5212Single Voltage Input Synchronous Buck Controller

Key FeaturesN-Ch Synchronous BuckProgrammable Fixed Switching Frequency of 150 to 750KHzRemote senseProgrammable Soft StartV2 Control Topology1.0V 1.5% Internal ReferenceLossless Inductor Sensing Over-current ProtectionHicup Mode Short Circuit Protection3.3V OperationUVLO with HysteresisPackage : SO14

Low Cost Syn-Rect Controllers : NCP157X

YesFirst power up only

YesSoft Start?

YESNoNoAdjustable fSW

YesNOYesDischarge CCOMP in UVLO

YesNONOTurn on LFET in UVLO?

NOYesYesPower Good?

157515731571

NCP157x Application Circuit(Dual Supplies)

NCP1575 Application Circuit(12V supply only)

100pF

0.22UF

VCC

5.6V

0.1UF

D4

BZX84C5V6LT1

1800u

1800u

GND

D3

BAT54SLT1

5.1kR2

10

2.7uH

GATEH

GATEL2 x6.3MBZ1800Rubyconcaps

2 x 16V/1800uFSanyo Electrolytic

COMP

5600pF

NC

12V

2.5V/10A

NCP1575

ROSC NTD30N02

3.3kR3

VFB

C40.033uF

NTD60N03

D2

BAT54SLT1

NCP1575Low Cost Synchronous Buck Controller

Key FeaturesN-Ch Synchronous BuckProgrammable Switching Frequency (Fixed at 200KHz if Rosc pin left open)Programmable Soft StartV2 Control Topology0.98V ±1.0% Internal Reference12V OperationUVLO with HysteresisPackage : SO8

System SolutionFor Portable DVD

LCD TV

Purpose Solution (1) For P-DVD

Li-ionBattery

uPMonitor

SW

Pick Up System Board

LCDPanel

5V

3.3V

LDO

5.5-19V

2.2V

CS51414G CS5173GCS51414G

14V-10VLDO

7.5V

Motor

AC Adaptor

NCP12XX

AudioAmp

LDO

Purpose Solution (2) for P-DVD

Li-ionBattery

uPMonitor

SW

Pick Up System Board

LCDPanel

CS5173GNCP5425NTMD6N02 NTMD6N02

Motor

AC Adaptor

NCP12XX

AudioAmp

LDO

LDO

2.2V

14V-10VLDO

7.5V

5.5-19V

5V

3.3V

LCD TV SolutionPower Map

uPMonitor

Tunner System Board

LCDPanel

LDO

12-19V

2.2V

CS51414G CS51414G

Amplifier

AC Adaptor – NCP12xx series

OtherAUX

LDO Control ON/OFF

5V

3.3V

Block Diagram

Dual Switching Controllers

NCP5203 – DDR Cntrl.Provides VDDQ and VTT or can be

Used as Independent Switcher and LDO,300kHz switching, 5V Operation

18P QFN, PowerSense 5

NCP5428 – Sync Buck Cntrl.Targeted to Notebooks,

Light Load Efficiency, Internal 10V LDO,0.8V Ref, OCP, Sequencing

Up to 700kHz prog. switching,4.5 – 30V Operation

TSSOP / QFN, PowerSense 5RTM Q4 2004

Dual Controller Roadmap

Note – Product Family Indicated by Color

Time

Perf

orm

ance

NCP5425 – Dual Buck Cntrl.Single 2 Phase Output or Dual Single

Outputs, Input Current Sharing,Cycle by Cycle OCP,

Up to 750kHz Switching, 5V or 12VOperation, 0.8V Ref,20P TSSOP, Bipolar

NCP5424/A – Dual Buck Cntrl.Single 2 Phase Output or Dual Single

Outputs, Input Current Sharing,OCP, Up to 750kHz Switching,

12V Operation, 1V Ref,16P SO, Bipolar

CS5422/NCP5422ADual Buck Controller

Dual Outputs,OCP, Up to 750kHz Switching,

12V Operation, 1V Ref,16P SO, Bipolar

NCP5213 – DDR Cntrl.Provides VDDQ and VTT or can be

Used as Independent Switcher and LDO,300kHz switching, 12V Operation

18P QFN, PowerSense 5LVConcept

Dual Synchronous Buck ControllersNCP5428 NCP5425 NCP5424 NCP5422A CS5422 CS5421

Operating Voltage Range 5-30V 5-12V 8.6-13.2V 9.6-16V 9.6-16V 9.6-16V

Control ArchitectureV-mode with input

feedforward V2 Control V2 Control V2 Control V2 Control V2 ControlPower Switch N-FET N-FET N-FET N-FET N-FET N-FETSoft Start Programmable Programmable Programmable Programmable Programmable ProgrammableRemote Sense No No No No No DifferentialInternal Reference Voltage 0.8 0.8 1.0V 1.0V 1.0V 1.0VReference Voltage Accuracy 1% 1% 2% 2% 2% 0.8%, 2%

Current Sense Element RDSON Lower FETSense Resistor or

InductorSense Resistor or

InductorSense Resistor or

InductorSense Resistor or

Inductor No

Current Limit TechniquePWM 1- Latch off PWM 2- Latch off

PWM 1- Cycle-by-cycle PWM 2- Cycle-by-cycle

PWM 1- Hiccup mode PWM 2- Cycle-by-cycle

PWM 1- Hiccup mode PWM 2- Hiccup mode

PWM 1- Hiccup mode PWM 2- Hiccup mode No

Current Limit Trip Point User Programmable 70mV 70mV 70mV 70mV No Operating Frequency 300-750 kHz 150-750 kHz 150-600 kHz 150-600 kHz 150-600 kHz 150-750 kHzMaxium Duty Cycle 200ns Min. off time 100% 100% 100% 100% 100%Gate Driver Peak Current 1.5A 1.5A 1.5A 1.5A 1.5A 1.5AAvailable Package TSSOP-24 TSSOP-20 SO-16 SO-16 SO-16, SO-24 SO-16Input Current Sharing No Yes Yes No No NoIndependent Current Limits Yes Yes No No No NoSeparate Driver Supply Yes Yes Yes Yes Yes NoBoth outputs low during fault No No No Yes No NoRecommended Applications Batt. Powered Sys. Non-batt. Powered Non-batt. Powered Non-batt. Powered Non-batt. Powered Non-batt. PoweredSingle Input, Dual Output Yes Yes No Yes Yes YesSingle Input, Single Output No Yes Yes No No NoDual Input, Single Output No Yes Yes No No NoDual Input, Dual Output Yes Yes No No No NoStatus In development RTM RTM RTM RTM RTM

Out-of-Phase Synchronization

Ch 1Input Current

Ch 2Input Current

OverallInput Current

Out–of–phase synchronization results in no overlap between input current of the two channels if turn on duty D<50%. Even if D>50%, overlap timeis reduced to minimum. This feature results in reduction of input filterrequirements.

CS5422Dual Out of Phase Synchronous Buck Controller

with Current Limit

Key FeaturesDual Synchronous BuckOut-of-Phase Synchronization reduces input capacitor requirementsUp to 600KHz switching frequencyProgrammable Soft StartV2 Control TopologyInternal slope compensationHiccup Mode Overcurrent ProtectionOvervoltage ProtectionPackage : SO16 & SO24

Q2

FDD6670A

L1

1.3uH/15A

+ C8-C11

4X470uF/4V

Q1

FDD6670A

Q3

FDD6670A

Q4

FDD6670A

L2

1.3uH/15A+ C12-C15

4X470uF/4V

+ C1-C2

2X220uF

0.1uF

C17

R9

30.9K

R7

8k+/-1%R8

10k+/-1% R6

10k+/-1%

0.1uFC16

R5

5k+/-1%

C5

0.1uF

D2

MBR0530T1

D1

MBR0530T1

R1

2k

R2

2k

R4

2k

R3

2k

D3

MA3180C4

0.1uF

C60.1uF

C70.1uF

R10

220Q5

FMMT2222ACT

C3

1uF U?

CS5422

1

2

3

4

5

6

7

89

10

11

12

1314

15

16 GATEH1

GATEL1

GN

D

BS

T

IS+1

IS-1

VFB1

COMP1COMP2

VFB2

IS-2

IS+2

ROSCV

CC

GATEL2

GATEH2

12V

1.5V/14A1.8V/14A

12V to 1.5V/14A and 1.8V/14A Converter

CS5422 Application DiagramCharge pump added and20V maximum BST pinallows single 12V step

down conversion

NCP5424/5Dual input – single output. Single input – dual output.

NCP5424NCP5425

Voltage (1)

Voltage (2)

Output (3)

NCP5424NCP5425

Voltage (4)Output (5)

Output (6)

NCP5424/5425Dual Out of Phase Synchronous Buck Controller

Key FeaturesDual Synchronous BuckOut-of-Phase Synchronization reduces input capacitor requirementsUp to 750KHz switching frequency – NCP5425Up to 600KHz switching frequency – NCP5424Down to 0.8V reference voltage – NCP5425Single 5V operate – NCP5425Programmable Soft StartV2 Control TopologyInternal slope compensationHiccup Mode Overcurrent ProtectionOvervoltage ProtectionPackage : SO20 – NCP5424Package: TSSOP20 – NCP5425

Comparison Table NCP54XX

Future Plan

Enhance Product Features and meet Market Needs.

New Products launch:– NCP5424– NCP5425

– Under development:• NCP5428 + More integration………..

Thanks.

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