ON Power Switching Switcher Solution For consumer electronics Andy Buk Asia Product Marketing Manager April 2004
Asian Business Unit Analogue Products Marketing Team US Business Unit Analogue Products Marketing Headquarter PHX Power Convesion Ac/dc Portable Cellular Phone/PDA Power Linear Power Switching Computing/ Telecom/ High power switching IPPD MOSFET/Misc Kelvin Tsiang KH Ho Manson Chan Joe Chung Andy Buk Kenneth Ng
Power Switching Devices Focus Area Current (A) >40 35 30 PC Motherboard VRM /phase Automotive power Steering Focus area DC 48V input DC-DC converter, Color monitor image correction switch 25 Back-up Power Supply AC100V SMPS 20 15 10 5 Cellular phone OA equiments, Automotive parts (motor solenoid driver, DC12-24V input DC-DC) Handheld products DC-DC converter, Notebook PC, Cosumer products Inverter for Lighting AC adapter (Notebook, Portable VCD,DVD) AC200V power supply Color monitor (high voltage circuit) 30 60 100 200-250 500 600 800 900 1400 V DS (V)
ON Semiconductor Analog Product Tree Signal Conditioning & Interface Power Management for Multi-Market Power Management for Special Market P.17 P.18 P.19 P.20 P.21 Op-Amp Comparator Timer Data Transmission P.2 Analog Switch & Multiplexer AC-DC/ Isolated Switching Power Factor Controller Flyback/ Forward Push-Pull Half-Bridge P.3 DC-DC/ Non-Isolated Switching P.15 Buck (step-down) Boost (step-up) Inverting Multi-Topology Voltage Supervisory Overvoltage Protection Undervoltage Reset Over/ Under Voltage Indication Supervisory with Voltage regulator P.5, 6 Low Dropout Regulator (LDO) Fixed Output Voltage Adjustable Voltage Multiple Output Linear Voltage Regulator Fixed Output Voltage Adjustable Voltage Drivers P.14 MOSFET/ IGBT Driver TRIAC Driver Load/ Relay Driver LCD/ Backlight Driver White LED Driver Voltage Reference/ Feedback Controller P.4 P.16 P.8 Wireless & Portable Power Mgmt ASICs Audio Amplifier RF Power Mgmt & Control Charge Pump Switching Controller Special LDO P.9 P.10 Battery Management Battery Protection Charge Controller Smart Card/ SIM Card Power & Interface Level Shifters & Interface P.11 Telecom Switching Controller for Power Module Computer P.7 Buck for Microprocessor Gate Driver Memory and I/O power Automotive P.12 Sensor Interface & Detector Smart Driver, Pre-driver Switching Controller Special LDO Motor Controller P.13 Stepper Motor Brushless DC Motor DC Servo Motor Universal Motor Hot Swap Controller/ FET
AC-DC/ Isolated Switching Controllers Power Factor Correction Flyback/ forward (low power) Push-pull (high power) Single-stage flyback NCP1651 Boost pre-regulator Average current mode NCP1650 Follower boost mode MC33260 Critical mode MC33262 MC34262 MC33368 2843 compatible CS2841B * CS2842A/ 3A/ 4 CS52843 NCV3843 * UC2842A/ 3A/ 4/ 5 UC2842B/ 3B/ 4B/ 5B UC3842A/ 3A/ 4/ 5 UC3842B/ 3B/ 4B/ 5B Non-2843 compatible CS51021A/ 2A/ 3A/ 4A @ CS51220 @ CS51221 @ CS5124/ 6 @ MC33023 MC34023 MC44603 MC44603A MC44604 MC44605 NCP1212 NCP1215 NCP1231 Coming soon External startup, external switch Primary side Max 250V~700V integrated startup (AC inputs) Internal switch MC33362 MC33363A/ B NCP1000/ 1/ 2 NCP1050/ 1/ 2/ 3/ 4/ 5 NCP1010/ 1/ 2/ 3/ 4 External switch MC33364 MC44608 NCP1200 NCP1200A NCP1203 NCP1205 NCP1207 NCP1216 NCP1217 NCP1377/B NCP1378 NCP1230 Max 150V~200V integrated startup (Telecom DC inputs) NCP1030 @ NCP1031 @ NCP1560 @ Secondary side CS5101 @ Half-bridge (medium power) MC33067 MC34067 External startup CS3524A MC33025 MC34025 SG3525A SG3526 TL494 / NCV494 * TL594 Integrated startup NCP1561 @ * Automotive @ Telecom, Power Module For details, please also refer to SGD514/D
DC-DC/ Non-Isolated Switching Controllers Sync Rect Buck (step down) General Single, external switch CS5211 # CS5212 # NCP1570 # NCP1571 # NCP1573 # NCP1575 # NCP5211A # NCP1580 Single, internal switch NCV8800 * Dual CS5421 * CS5422 * NCP5424 * NCP5425 * + Low voltage/ low power NCP1500 + NCP1501 + NCP1550 + NCP1510 + NCP1511 + NCP1512 + NCP1520 + NCP1530 + Non-Sync Rect External switch CS51031 # CS51033 # Internal switch CS51411 CS51412 CS51413 CS51414 MC33166 MC34166 MC33167 MC34167 NCP5428 Boost (step up) General CS5171 CS5173 NCP5173 NCP1442 NCP1444 Low voltage/ low power Cuk (inverting) General With 5V/ 100mA linear regulator CS2001 * CS5111 * CS5112 * NCP1400A + NCP1402 + NCP1403 + NCP1410 + NCP1411 + NCP1417 + NCP1421 + NCP1450A + NCP1404 + NCP1406 + NCP1423 + CS5172 CS5174 NCP1443 NCP1445 Multi-topology (step up, down or inverting) External switch MC33060A MC34060A Coming soon Internal switch MC33063A MC34063A NCV33063A * MC33163 MC34163 NCV33163 * * Automotive # Computer + Wireless & Portable For details, please also refer to SGD514/D
Linear Voltage Regulator Fixed Output Voltage Adjustable Voltage Positive Output Negative Output Positive Output Negative Output 100mA MC78FCxx MC78LxxA NCV78L05 * 500mA MC78MxxA 1A MC78xx/ A NCV7805 * 3A MC78Txx/ A LM323/ A 100mA MC79LxxA 500mA MC79Mxx 1A MC79xx/ A 100mA LM317L 500mA LM317M 1.5A LM317 NCV317 * 3A LM350 1.5A LM337 * Automotive
Low Dropout Regulator (LDO) 1 of 2 Fixed Output Voltage ext. transistor MC78BCxx 50mA NCV8184 * 80mA MC78LCxx NCP4561 NCP502 NCP512 NCP552 NCP553 NCP562 NCP563 100mA CS2001 * (1) CS5111 * (1) CS5112 * (1) CS8101 * CS8151 * CS8221 * CS8311 * CS9201 * CS9202 * L4949 LM2931 LP2950 LP2951 MC33160 (2) MC33761 MC78L05 NCP4561 + NCV2931 * NCV2951 * NCV4949 * NCV78L05A * 150mA CS8321 * MC33263 NCP500 NCP511 NCP551 NCP561 NCV4279 * NCV4299 * NCP5426 + NCV8501 * NCV8502 * 200mA MC33565 # 250mA NCV8508 * 300mA CS8120 * MC33275 MC33375 NCP2860 + NCV33275 * 400mA NCV8503 * NCV8504 * NCV4276 * 450mA NCV4275 * 500mA CS5231 # CS5233 # CS8140 * CS8141 * MC33267 NCV8141 * 750mA CS403 * CS8122 * CS8126 * CS8129 * LM2935 800mA MC33269 MC34268 # NCV33269 * 1A CS5201 # NCP1117 1.2A MC33566 # 1.5A CS52015 # NCP1086 3A CS5203A # CS5253B # NCP630G # NCP631 # 4A CS5204 # 5A CS5205 # 6A CS5206 # 7A CS5207 # Coming soon * Automotive # Computer + Wireless & Portable (1) w/ switching regulator (2) w/ supervisory
Low Dropout Regulator (LDO) 2 of 2 Adjustable Voltage Multiple Output 100mA CS8271 * LM2931/ A 150mA NCV8501 * NCV8502 * 200mA CS8182 * 400mA NCV8503 * NCV8504 * NCV4276 * 1A CS5201 # NCP1117 1.5A CS52015 # NCP1086 3A CS5203A # CS5253B # NCP630A # 4A CS5204 # 5A CS5205/ A # 6A CS5206 # 7A CS5207/ A # CS5257A # 8A CS5208 # CS5258 # 10A CS5210-1 # CS52510-1 # 2 outputs CS8363 * dual 3.3V CS8481 * 3.3V & 5V CS8183 * dual adjustable CS8281 * dual 5V CS8361 * dual 5V CS8391 * dual 5V CS8371 * 5V & 8V CS8147 * 5V & 10V CS8251 * 5V & 10V CS8156 * 5V & 12V CS8161 * 5V & 12V LM2935 * dual 5V MC33567 # 1.5V & 1.8V MC33762 + dual 2.5, 2.8, 3, 3.3, 3.6, 5V NCV8509 * dual 1.8, 2.5, 2.6, 3.3, 5V 3 outputs NCP4523 + 5 outputs MC33765 + all 2.8V, 3V, or (2.35, 2.8, 2.8V) all 2.8V, 3V Coming soon * Automotive # Computer + Wireless & Portable
Computer Buck for Microprocessor Gate Driver Memory and I/O Power Mgmt 1-Phase CS51311 CS51312 CS51313 CS5150H CS5151H CS5155H CS5156H CS5157H CS5158 CS5159 CS5160 CS5161 CS5161H CS5165H CS5166H MC33470 2-Phase CS5302 CS5308 CS5322 CS5331 CS5332 NCP5322A NCP5332A 2/3/4-Phase NCP5314 NCP5318 3-Phase CS5301 CS5303 CS5305 NCP5306 CS5323 4/5/6-Phase NCP5316 NCP5319 4-Phase CS5307 NCP5351 (5V) NCP5355 (12V) NCP3418 NCP3418A NCP5200 NCP5201 NCP5206 NCP5208 NCP5203 NCP5210 NCP5220 NCP5209 Coming soon Please also refer to DC-DC Switching tree and LDO tree for related products
Wireless & Portable RF Power Mgmt & Control Dual Band GaAs P.A. MC33170 RF Signal Detection NCS5000 Balanced Modulators/ Demodulators MC1496 RF Detector + Controller NCS5021 Power Mgmt ASICs NCP4100 NCP4110 NCP4111 NCP4115 Audio Amplifier Mono NCP2890 NCP2820 NCP4894 Stereo NCP2809 Charge Pump Inverter With enable MAX1720 NCP1729 Inverter Without enable MAX828 MAX829 Switching Controller Please refer to DC- DC Switching tree for related products Special LDO Audio Amp Driver NCP2860 Vibrator Motor Driver NCP5426 Others Please refer to LDO tree Coming soon
Battery Management Lithium Battery Protection IC Charge Control 1-cell battery pack NCP800 NCP802 NiCd / NiMH MC33340 MC33342 Li-ion NCP4300A NCP1800
Smart Card/ SIM Card Power Management & Interface IC MC33560 NCN6000 NCN6001 NCN6004A Level Shifters for Smartcard Interface NCN6010 NCN6011
Telecom Switching Controller for Power Module Hot Swap Controller/ FET NIS5101 External Startup Internal Startup I-mode Low Vcc FF V-mode Bias Regulator Sync Rect Forward Push-pull (High power) Secondary side CS51021A/ 2A/ 3A/ 4A CS5124/ 6 CS51220 CS51221 NCP1030 NCP1031 NCP1560 NCP1561 CS5101 Coming soon Please also refer to AC-DC/ Isolated switching controllers tree
Automotive Dual Airbag Deployment ASIC CS2082 Proximity Detector CS209A Dual Variable- Reluctance Sensor Interface CS1124 LIN Transceiver NCV7310 NCV7311 Switching Controller with Linear Regulator CS2001 CS5111 CS5112 Special LDO Please refer to LDO tree Winchester Servo Preamplifier CS59201 Air Core Gauge Driver CS4121 CS4122 CS4192 CS8190 CS8191 Stepper Motor/ Odometer Driver CS4161 CS8441 Motor Driver CS4124 CS7054 NCV33033 NCV33035 NCV7701 NCV7702 IGBT Ignition Pre-Driver CS8312 Relay Driver CS1107 Lamp Driver CS299 CS1108 H-bridge Driver NCV7701 NCV7702 MOSFET Driver NCV33152 Alternator Voltage Regulator FET Driver CS3341 CS3351 CS3361 CS387 Low-side Driver CS1112 High-side Driver CS8240 Quad Driver NCV7601 NCV7612 Coming soon For details, please also refer to SGD516/D
Motor Control Brushless DC Motor DC Servo Motor Stepper Motor Universal Motor MC33033 MC33035 MC33039 NCV33033 * NCV33035 * NCV33039 * MC33030 MC3479 TDA1085C * Automotive
Drivers MOSFET / IGBT Driver Half-wave TRIAC Driver Load / Relay Driver LCD/ Backlight Display Driver White LED Driver MC33151 MC33152 NCV33152 * MC33153 MC34151 MC34152 NCP5351 NCP5355 NCP3418 NCP3418A UAA2016 MC1413 / B NCV1413B * MDC3105 MDC3205 MC34271 NCP5008 NCP5009 NCP5007 * Automotive
Voltage Supervisory Over Voltage Protection Over-Voltage & Under- Voltage Indications Under-Voltage Reset Supervisory with 5V 100mA voltage regulator Fixed threshold 6.85V NCP345 Programmable threshold 3 modes selection MC33161 MC34161 NCV33161 * Without delay MC33160 MC34160 MAX809/ MAX810 MC33064/ MC34064/ NCV33064 * MC33164/ MC34164/ NCV33164 * NCP300/ NCP301 (replaces MC33464) NCP304/ NCP305 (replaces MC33460/1) NCP803 OVP by turn off series transistor NCP3712A OVP by turn on paralleled SCR MC3423 With delay Fixed delay MAX707/ MAX708 MAX811/ MAX812 Programmable delay Coming soon NCP302/ NCP303 (replaces MC33465) Coming soon NCP112: 3.3V, 5V, 12V Housekeeping IC With delay & watchdog NCP1232 * Automotive
Voltage Reference/ Feedback Controller Voltage Reference Feedback Controllers fixed voltage adjustable voltage Either voltage or current Both voltage and current 1.235V 0.9 to 6V 0.9V reference 2.6V reference LM285-1.2 LM385-1.2 2.5V MC1403/ B LM285-2.5 LM385-2.5 NCP100 1.24 to 16V TLV431A 2.5 to 36V NCV1009 * NCV431A * TL431/ A/ B NCP100 1.24V reference TLV431A 2.5V reference NCV1009 * NCV431A * TL431/ A/ B NCP4300A External reference MC33341 * Automotive
Op-Amp Low voltage Rail to Rail MC33201/ 2/ 4 MC33501/ 2/ 3 NCS2001 NCS7101 NCS2002 NCV33202/ 4 * General Purpose LM2902/ 4 LM201A/ 301A LM224/ 324/ 324A LM258/ 358 MC3303/ 3403 NCV2902/ 4* Low Noise LM833 MC33077/ 8/ 9 MC33178/ 9 MC33272A/ 4A High Speed MC33071/ 2/ 4 MC34071/ 2/ 4 MC33071A/ 2A/ 4A MC34071A/ 2A/ 4A MC33272A/ 4A <1V MC33501/ 2/ 3 NCS2001 High Current TCA0372 Low Power MC33171/ 2/ 4 MC33178/ 9 * Automotive
Comparators Single Dual Quad LM211/ LM311 NCS2200/ 1/ 2/ 3 NCS2300/ 1/ 2/ 3 Coming soon LM293/ LM393 LM2903/ NCV2903 * LM239/ LM339 LM2901/ NCV2901 * MC3302 * Automotive
Timer Direct replacement for NE555 MC1455 NCV1455 * * Automotive
Data Transmission Receivers Drivers RS-232 MC1489/A RS-232 MC1488 MC3488A RS-422/3 MC3488A MC26LS30 RS-485 MC75172B MC75174B
Analog Switch & Multiplexer Standard CMOS 3-18 Volt 300Ω Ron 50MHz HCMOS/VHC 2-12 Volt 100Ω Ron 100MHz Wireless 2-6 Volt <40Ω Ron 200MHz LVX-Family 2-6 Volt <20Ω Ron up to 200MHz MC14016B MC14051B MC14052B MC14053B MC14066B MC14067B MC14512B MC14551B Improved Performance Single or Split Supply MC74HC4051A MC74HC4052A MC74HC4053A MC74LVX4066A MC74VHC4051 MC74VHC4052 MC74VHC4053 MC74VHC4066 Charge Control MC74HC4851 MC74HC4852 Single or Split Supply Improved Linearity MC74HC4316A 1-Gate Single Supply SPST-SC88a/ SOT-23 MC74VHC1G66 MC74VHC1GT66 NLAS4501 NLAST4501 Multiple Switches Small Packages NLAS323,4,5 NLAS2066 NLAS1053 NLASB3157 NLAS4599 NLAST4599 NLAS44599 NLAST44599 NLAS4684 MC74LVX4051 MC74LVXT4051 MC74LVX4052 MC74LVX4066 MC74LVXT4052 MC74LVX4053 MC74LVXT4053 For details, please also refer to BRD8007/D
Single Phase Controller Roadmap Performance CS5211 Sync Buck Cntrl. Full-Featured, 1V Ref, Remote Sense, OCP, Up to 750kHz switching, 5V or 12V Operation 14 SOIC, Bipolar Time CS5212 Sync Buck Cntrl. Full-Featured, 1V Ref, Remote Sense, OCP, Up to 750kHz switching, 3.1 7V Operation 14 SOIC, Bipolar NCP1571 Sync Buck Cntrl. Cost-Effective, 1V Ref, 200kHz Fixed Frequency, 12V/5V Operation 8 SOIC, Bipolar NCP5211A Sync Buck Cntrl. Full-Featured,.8V Ref, Remote Sense, OCP,Up to 750kHz switching, 70% max duty cycle, 5V or 12V Operation 14 SOIC, Bipolar NCP1575 Sync Buck Cntrl. Cost-Effective, 1V Ref, 200-400kHz Prog. Frequency, 12V only or 12V/5V Operation 8 SOIC, Bipolar NCP1581/ 1581A Sync Buck Cntrl. Full-Featured, 0.8V Ref, Up to 700kHz prog. switching, OCP, 4.5 13.2V Operation Boost Pin to 28V QFN, PowerSense 5 Concept NCP1580 Sync Buck Cntrl. Cost-Effective, 0.8V Ref, 350 or 700kHz switching, 4.5 13.2V Operation Boost Pin to 28V 8 SOIC, PowerSense 5 RTM Q3 2004 NCP1590 Sync Buck Cntrl. Targeted to Notebooks, Light Load Efficiency, 0.8V Ref, OCP Up to 700kHz prog. switching, 4.5 30V Operation QFN, PowerSense 5LV Concept Note Product Family Indicated by Color
<1A Step Down Step down from 5V LDOs Buck Regulators : CS5141X Step down from 3.3V LDOs Buck Controllers : CS51033
CS51411~51414 1.5A, 280 and 560kHz Low Voltage Buck Regulators Description Buck regulators employing proprietary V 2TM architecture for ultra-fast transient response, improved regulation and simplified design Wide voltage and frequency range Soft start operation Choice of 0 C to 70 C or -40 C to 85 C ambient temp ranges Features 2% error amp reference voltage tolerance Switch frequency decrease of 4:1 in short circuit conditions BOOST lead allows Bootstrapped operation Bias function provided Sync function provided Shutdown lead provided Low 85uA quiescent current Thermal shutdown Applications Buck converter Inverting converter Portable computers Battery powered systems Battery charger Distributed power Benefits Tight tolerance for demanding VOUT requirements Reduces short circuit power dissipation Maximizes efficiency For parallel supply operation or noise minimization Provides Power-Down option Minimizes current drain during power down Provides extra level of device protection Ordering Information See datasheet CS51411/D for specific device number selection
Basic V 2 TM Control Outer 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 Circuit 4.5V-16V to 3.3V/1A D1 1N4148 4.5V-16V C2 2X22uF ENABLE 5 U1 2 Vin SHDNB Vc 1 CS51412/14 Boost VFB Gnd Vsw BIAS 3 4 C1 0.1uF L1 D2 D3 15uH 1N4148 R1 2.05K C3 100uF 3.3V 8 7 6 1N5821 C4 0.1uF R2 1.27K
Boost Converter 1.5 Amp CS5171 CS5172 CS5173 CS5174 NCP5173A 4 Amp NCP1442 NCP1443 NCP1444 NCP1445
CS517X <1.5A Step Up
CS5171~5174 1.5A, 280/560kHz Boost Regulators Description Boost regulators with internal power switch providing up to 1.5A output Wide input voltage range of 2.7V to 30V Integrated power switch allows for minimum current limit of 1.5A CS5171,2 has a 280kHz operating freq and max sync range of 500kHz CS5173,4 has a 560kHz operating freq and max sync range of 1MHz Max operating current is 5.5mA; max shutdown current of 100uA CS5171~5174 family can regulate positive and negative voltages Choice of 0 C to 70 C or -40 C to 85 C ambient temp ranges Applications Boost, buck, flyback, SEPIC, and inverting converters DSL and ADSL modems Cable modems Laptop computers Network equipment Features High operating frequency Internal thermal shutdown On-board power switch Benefits Allows use of small external passive components Minimizes external components; provides over-temperature protection Eliminates external MOSFETs Versions See datasheet CS5171/D for specific device number selection
NCP5173 1.5A, 280/560kHz Boost Regulators Description Low 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 30V Integrated power switch allows for minimum current limit of 1.5A NCP5173 has a 560kHz operating freq and max sync range of 1MHz Max operating current is 5.5mA; max shutdown current of 100uA Choice of -40 C to 85 C ambient temp ranges Applications Best for LCD Panel Boost, buck, flyback, SEPIC, and inverting converters DSL and ADSL modems Cable modems Laptop computers Network equipment Features High operating frequency Internal thermal shutdown On-board power switch Benefits Allows use of small external passive components Minimizes external components; provides over-temperature protection Eliminates external MOSFETs Versions See datasheet NCP5173 for specific device number selection
CS5171/2/3/4 Block Diagram Frequency Foldback Synchronization & Shutdown Slope Compensation Error amp output is clamped to provide cycle by cycle maximum current limit
External Adjustment to CS5171/2/3/4 Alter Max Current Limit Increase Slope Compensation Add Soft Start
CS5171/3 Boost Regulator 3.3Vto 5V/400mA R2 3.6k 1 CS5171/3 VC VSW 8 D1 J4 1 C1 0.01uF J1 1 J2 1 3.3V V in R1 5k C2 200pF R3 1.3k 2 FB PGND 7 3 NC AGND 6 4 SS VCC 5 C7 10uF C4 0.1uF L1 22uH thin pak TP4 MBRS120T3 C5 10uF ceramic ceramic C6 10uF +5V J3 1 Gnd ceramic J5 1 Gnd
CS5171/3 Flyback Converter 5V to ±12V/200mA
CS5171 Demoboard 3.3 V to 5V/400mA 0.7 0.7
CS5171 Demoboard 3.3 V to 5V/400mA Efficiency vs. Current 90 Efficiency (%) 80 70 0.01 0.06 0.11 0.16 0.21 0.26 0.31 0.36 0.41 0.46 Current (A)
CS5171/3 Flyback Converter 5V to ±12V/200mA
CS5171 ±12V Boost Converter -12V is generated by charge pump circuit, no transformer is required.
NCP144X Series <4A Step Up
NCP1442~1445 4A, 280 and 560kHz Boost Regulators Description Current 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). Applications Boost converter Distributed power Inverting converter Portable computers Battery powered systems Features Integrated 4A power switch 2% error amp reference voltage tolerance Synchronization function NCP1442/3 to 500kHz; NCP1443/4 to 1MHz Shutdown capability reduces max current draw to 50uA Switch frequency decrease in short circuit conditions Thermal shutdown New PowerFLEX surface mount package Benefits No external FET saves cost and board space Tight tolerance for demanding VOUT requirements Use smaller passive components and save space Allows design flexibility Allows system power down for energy savings Reduces short circuit power dissipation Provides extra level of device protection Low profile D2Pak-type package saves space
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 Controller Key Features Programmable Oscillator (up to 700 khz) No stability compensation required Wide input voltage : 4.5V~20V Lossless short circuit protection Vcc monitor Separate pin for power Vcc Programmable Soft Start Package : SO8 narrow and PDIP8 Typical Applications Distributed power Battery charger Telecommunications systems
CS51031 Application Circuit 5V-12V to 3.3V/3A
CS51033 - Buck Controller Key Features Programmable Oscillator (up to 700 khz) No stability compensation required 3.3V input voltage Lossless short circuit protection Vcc monitor Programmable Soft Start Package : SO8 narrow and PDIP8 Typical Applications Distributed power Battery charger Telecommunications systems
CS51033 Application Circuit 3.3V to 1.5V/3A Charge pump added to 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
CS5211 Single Voltage Input Synchronous Buck Controller Key Features N-Ch Synchronous Buck Programmable Fixed Switching Frequency of 150 to 750KHz Remote sense Programmable Soft Start V 2 Control Topology 1.0V 1.5% Internal Reference Lossless Inductor Sensing Over-current Protection Hicup Mode Short Circuit Protection 5V to 12V Operation UVLO with Hysteresis Package : SO14
CS5211 Application Diagram Booststrap for high side N-ch MOSFET driving
CS5211 Demoboard 5V to 2.5V/8A
NCP5211A Single Voltage Input Synchronous Buck Controller Key Features N-Ch Synchronous Buck Programmable Fixed Switching Frequency of 150 to 750KHz Remote sense Programmable Soft Start Max Duty cycle clamped to 70% 0.8V 1.0% Internal Reference Lossless Inductor Sensing Over-current Protection Cycle by cycle Mode Short Circuit Protection 5V to 12V Operation UVLO with Hysteresis Package : SO14 Improved Version of CS5211
NCP5211A Application Diagram
CS5212 Single Voltage Input Synchronous Buck Controller Key Features N-Ch Synchronous Buck Programmable Fixed Switching Frequency of 150 to 750KHz Remote sense Programmable Soft Start V 2 Control Topology 1.0V 1.5% Internal Reference Lossless Inductor Sensing Over-current Protection Hicup Mode Short Circuit Protection 3.3V Operation UVLO with Hysteresis Package : SO14
Low Cost Syn-Rect Controllers : NCP157X 1571 1573 1575 Power Good? Yes Yes NO Soft Start? Yes First power up only Yes Turn on LFET in UVLO? NO NO Yes Discharge C COMP in UVLO Yes NO Yes Adjustable f SW No No YES
NCP157x Application Circuit (Dual Supplies)
NCP1575 Application Circuit (12V supply only) 12V D3 D2 BAT54SLT1 BAT54SLT1 D4 5.6V BZX84C5V6LT1 NCP1575 C4 0.033uF NTD60N03 2.7uH 1800u 2 x 16V/1800uF Sanyo Electrolytic 10 VCC GND 2.5V/10A ROSC NC COMP VFB GATEL GATEH NTD30N02 1800u 2 x 6.3MBZ1800 Rubycon caps 0.22UF 0.1UF 5.1k R2 5600pF 3.3k R3 100pF
NCP1575 Low Cost Synchronous Buck Controller Key Features N-Ch Synchronous Buck Programmable Switching Frequency (Fixed at 200KHz if R osc pin left open) Programmable Soft Start V 2 Control Topology 0.98V ±1.0% Internal Reference 12V Operation UVLO with Hysteresis Package : SO8
System Solution For Portable DVD LCD TV
AC Adaptor NCP12XX Li-ion Battery SW Purpose Solution (1) For P-DVD 5.5-19V LDO up Monitor CS51414G CS51414G CS5173G 5V 3.3V LDO 2.2V LDO 7.5V 14V -10V Audio Amp Motor Pick Up System Board LCD Panel
AC Adaptor NCP12XX Li-ion Battery SW Purpose Solution (2) for P-DVD 5.5-19V LDO up Monitor NTMD6N02 NCP5425 NTMD6N02 CS5173G 5V 3.3V LDO 2.2V LDO 7.5V 14V -10V Audio Amp Motor Pick Up System Board LCD Panel
AC Adaptor NCP12xx series 12-19V LCD TV Solution Power Map LDO up Monitor Control ON/OFF CS51414G CS51414G 5V 3.3V LDO 2.2V Other AUX Amplifier Tunner System Board LCD Panel
Block Diagram
Dual Switching Controllers
Dual Controller Roadmap 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 12V Operation, 0.8V Ref, 20P TSSOP, Bipolar 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 5 RTM Q4 2004 Performance 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/NCP5422A Dual Buck Controller Dual Outputs, OCP, Up to 750kHz Switching, 12V Operation, 1V Ref, 16P SO, Bipolar Time NCP5203 DDR Cntrl. Provides VDDQ and VTT or can be Used as Independent Switcher and LDO, 300kHz switching, 5V Operation 18P QFN, PowerSense 5 NCP5213 DDR Cntrl. Provides VDDQ and VTT or can be Used as Independent Switcher and LDO, 300kHz switching, 12V Operation 18P QFN, PowerSense 5LV Concept Note Product Family Indicated by Color
Dual Synchronous Buck Controllers NCP5428 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 Architecture V-mode with input feedforward V2 Control V2 Control V2 Control V2 Control V2 Control Power Switch N-FET N-FET N-FET N-FET N-FET N-FET Soft Start Programmable Programmable Programmable Programmable Programmable Programmable Remote Sense No No No No No Differential Internal Reference Voltage 0.8 0.8 1.0V 1.0V 1.0V 1.0V Reference Voltage Accuracy 1% 1% 2% 2% 2% 0.8%, 2% Current Sense Element RDSON Lower FET Sense Resistor or Inductor Sense Resistor or Inductor Sense Resistor or Inductor Sense Resistor or Inductor No Current Limit Technique PWM 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 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 khz Maxium 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 1.5A Available Package TSSOP-24 TSSOP-20 SO-16 SO-16 SO-16, SO-24 SO-16 Input Current Sharing No Yes Yes No No No Independent Current Limits Yes Yes No No No No Separate Driver Supply Yes Yes Yes Yes Yes No Both outputs low during fault No No No Yes No No Recommended Applications Batt. Powered Sys. Non-batt. Powered Non-batt. Powered Non-batt. Powered Non-batt. Powered Non-batt. Powered Single Input, Dual Output Yes Yes No Yes Yes Yes Single Input, Single Output No Yes Yes No No No Dual Input, Single Output No Yes Yes No No No Dual Input, Dual Output Yes Yes No No No No Status In development RTM RTM RTM RTM RTM No
Out-of-Phase Synchronization 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 time is reduced to minimum. This feature results in reduction of input filter requirements. Ch 1 Input Current Ch 2 Input Current Overall Input Current
CS5422 Dual Out of Phase Synchronous Buck Controller with Current Limit Key Features Dual Synchronous Buck Out-of-Phase Synchronization reduces input capacitor requirements Up to 600KHz switching frequency Programmable Soft Start V 2 Control Topology Internal slope compensation Hiccup Mode Overcurrent Protection Overvoltage Protection Package : SO16 & SO24
CS5422 Application Diagram 12V Q5 FMMT2222ACT R10 220 MA3180 D3 MBR0530T1 D1 C4 0.1uF MBR0530T1 D2 + C1-C2 2X220uF Charge pump added and 20V maximum BST pin allows single 12V step down conversion 1.8V/14A + C12-C15 4X470uF/4V L2 1.3uH/15A Q3 FDD6670A Q4 FDD6670A C3 1uF 16 15 U? 14 VCC GATEH2 GATEL2 1 2 C5 0.1uF Q1 FDD6670A Q2 FDD6670A L1 1.3uH/15A + C8-C11 4X470uF/4V R7 8k+/-1% R3 2k R4 2k C17 0.1uF R8 10k+/-1% 12 C7 0.1uF 11 9 10 13 R9 CS5422 6 8 C16 0.1uF C6 0.1uF R6 R1 2k R2 2k R5 5k+/-1% 30.9K 3 4 BST GATEH1 GATEL1 1.5V/14A IS+2 IS-2 COMP2 VFB2 ROSC GND IS+1 IS-1 COMP1 VFB1 5 7 10k+/-1% 12V to 1.5V/14A and 1.8V/14A Converter
NCP5424/5 Dual input single output. Single input dual output. Voltage (1) Voltage (2) NCP5424 NCP5425 Output (3) Voltage (4) NCP5424 NCP5425 Output (5) Output (6)
NCP5424/5425 Dual Out of Phase Synchronous Buck Controller Key Features Dual Synchronous Buck Out-of-Phase Synchronization reduces input capacitor requirements Up to 750KHz switching frequency NCP5425 Up to 600KHz switching frequency NCP5424 Down to 0.8V reference voltage NCP5425 Single 5V operate NCP5425 Programmable Soft Start V 2 Control Topology Internal slope compensation Hiccup Mode Overcurrent Protection Overvoltage Protection Package : SO20 NCP5424 Package: TSSOP20 NCP5425
Comparison Table NCP54XX
Future Plan Enhance Product Features and meet Market Needs. New Products launch: NCP5424 NCP5425 Under development: NCP5428 + More integration..
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