Battery Power Managment Silicon Booming Market Jeff Shepard

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Battery Power Managment Silicon Booming Market Jeff Shepard

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Battery Power Managment Silicon
Booming Market
Jeff Shepard
MARKET searching growth opportunities, matter small, portable electronics bright spots. particular, personal digital assistants (PDAs), digital cameras, notebook computers present semiconductor makers with significant sales growth potential. digital camera segment expected have compound annual growth rate (CAGR) 10.8% between 2003, while segment will have CAGR 9.8% during same period, according recent projections Darnell Group (www.darnell.com). Notebook computers will have slower CAGR
5.3%, much larger market. While both digital camera segments battery pack market will under $150 million this year, notebook segment will exceed $1.2 billion. Makers PDAs, digital cameras, notebook computers under increasing pressure pack more features longer runtimes into smaller packages. Battery power-management semiconductors being called higher levels performance less space. those segments that being most aggressively targeted makers battery power-management devices.
"Boomer" stereo headphone amplifier from National Semiconductor designed operate from single 1.5V cell.
LTC4058 from Linear Technology (www.linear.com) good example shrinking size battery charger ICs. This 800mA, single-cell, lithium-ion (Li-ion) battery charger allows maximum charge rates occupies 9mm2 footprint. requires external power components operates autonomously, independent firmware battery monitoring, charge termination, protection. Designed digital cameras, mobile phones, PDAs, USBpowered equipment, similar applications, this linear charger includes three pins reporting value charge current used gauging, presence input power supply, charge status. Targeting larger mobile devices, Texas Instruments (www.ti.com) developed three-IC chipset two-, three-, four-series-cell Li-ion battery packs used portable medical appliances, notebook computers, other multi-cell applications. bq2084 Smart Battery Specification (SBS) version 1.1-compliant monitors capacity other critical parameters pack, reports information system host controller, enabling host controller manage remaining battery power extend system runtime. bq29312 analog frontend protection circuit provides safety protection over-charge, overload, short-circuit, over-voltage undervoltage conditions with batterymanagement host processor. bq29400 secondary protection enables each cell multi-cell pack compared with internal reference
POWER SUPPLEMENT NOVEMBER 2003
voltage; cell gets into overagement applications, such cell (www.irf.com) recently added Schottky voltage condition, bq29400 will phones, PDAs, portable music players, diodes hand-held applications. wait over programmed period time receivers, digital cameras. STmite package from maxiand output drive external According Darnell Group foremum thickness 1.15mm FET, which used burn chemcasts, market external ac-dc footprint half that packical fuse further protect system. power supplies battery chargers age, same thermal Microchip Technology (www. could exceed billion units 2007. resistance. offers range microchip.com) designed billion-unit market sure attract Schottky diodes 200W tranPS402 SBS-compliant battery-managelot attention from regulators well sient-voltage suppressor ment with Nickel-metal equipment makers. Designers STmite configuration. hydride (NiMH) battery packs. With ac-dc power supplies portable IR's IR140CSP "FlipKY' accuracy within ±1%, PS402 equipment often need satisfy device, which utilizes standard ball-grid fuel gauge that combines Blue Angel/EN6100-3-2 efficiency array (BGA) technology occupies Microchip's RISC-based microcontroller standards. eight-pin iW2202 digitotal area 2.25mm2, smaller than standard package. with 15-bit, analog-to-digital converttal controller from iWatt 40V, Schottky four-ball, 1.5mm Packaged 28-pin SSOP this (www.iwatt.com) provides powercan handle packs factor correction (PFC) cells series. Multiple efficiency over 100:1 load varichemistries, including singleation across universal input cell Li-ion packs dual cell range 85Vac 270Vac, 50Hz packs alkaline, NiMH 60Hz. Offered SO-8 Nickel-Cadmium (NiCd), package, iW2202's digital handled Maxim's (www. control technology eliminates maxim-ic.com) MAX6439 loop compensation circuitry MAX6442 Series battery monthe pre-regulation stage, itors. Each these offer used power supplies three outputs: low-voltage outup 150W. enabling system Power Integrations (www. shut off, battery voltage warnpowerint.com) offers indicator allow system LNK500 high-voltage, monolithto enter low-power mode power-conversion backup critical data memory, replacement linear transInternational Rectifier's IR140CSP 40V, Schottky occupies power-good output. former chargers adapters area 2.25mm2. only makers taroften employed with portable 1.5mm device with profile less geting battery-powered portable elecapplications, such mobile phones than 0.8mm. Since device made tronics makers discrete power PDAs. LNK500's output-curwith true chip-scale packaging, dissidevices also offer parts optimized rent tolerance ±25% allows lower pates heat directly from into these growing market segments. system cost, often most critical air, increasing thermal efficiency; Toshiba (www.toshiba.com/taec/) barrier replacing older linear transthermal resistance junction-to-ambient offers family bipolar power tranformer designs. With rated C/W, maximum. sistors portable electronics that components, LNK500 enables Also 1.5mm 1.5mm feature very saturation voltages. fault-protected, universal input, conconfiguration, FDZ299P P-Channel part this family, 2SC5755, stant-voltage, constant-voltage/conMOSFET from Fairchild Semifeatures maximum saturation voltage stant-current output switching power conductor (www.fairchildsemi.com) 0.12V, with current gain from supply that meets worldwide energy offers size reduction compared 1,000. Typical applications these efficiency standards. standard SSOT-6 TSSOP-6 bipolar transistors include load switchAlso sensitive demands MOSFETs currently used similar power management, backPFC legislated under IEC-62100-3-2, applications. maximum package lighting inverters, dc-dc converters, recently added Series height 0.8mm allows this device charging circuits built-in rechargeof high-efficiency diodes active used under shields internal able batteries, series regulators. switching power supplies such sub-assemblies displays. Both Microelectronics (www. those used with notebook computers, FDZ299P designed power manst.com) International Rectifier video games other home enterEDN POWER SUPPLEMENT NOVEMBER 2003
Power solutions computing applications.
Power Conversion Power Distribution Power Management Power Minimization
Fairchild provides systemwide power solutions, including:
Memory Power
Linear solutions MOSFET configurations save board space while maximizing overall efficiency
Core Power Management
Support major power architectures DC/DC solutions from phase phase Integrated stand-alone controller/drivers flexibility scalability MOSFETs thermally enhanced FLMP packaging Single dual SyncFETsimprove efficiency while reducing component count
more information Fairchild's power solutions, visit website.
www.fairchildsemi.com/computing
Off-Line Power
Various protection schemes enhance reliability Integrated controller switches reduce component count Stand-alone integrated high power AC/DC solutions MOSFETs improve efficiency
Across board. Around world.
Analog
Discrete
Interface Logic
Optoelectronics
tainment devices. devices Mobile phones players have very reverse-recovery charge include motor drives, they continuous current-mode PFC, while need audio amplifiers conthe devices have forward-voltsume large amounts power. drops discontinuous currentNational Semiconductor (www.nsc. mode applications. com) offers "Boomer" stereo headFour switching regulator phone amplifier designed operate from Semiconductor (www.on from single 1.5V cell. National's semi.com) offered with integratLM4916 unity gain stable feaed 700V power switch unique tures circuitry that reduces pops features, which offer designers clicks that normally occur during device complete control solution ac-dc turn-on turn-off; externally conpower supplies digital cameras, trolled, low-power consumption; activevideo recorders, similar applications. NCP1012 NCP1013 have programmed current limits 250mA 350mA, respectively, available with fixed switching frequencies 100kHz 133kHz. Also aimed small portable devices, such mobile phones, SC4911 from Semtech (www.sem tech.com) highly integrated bias pri- This dropout voltage regulator from Micrel source 300mA. mary-side, voltage-mode, pulse-width-modulation controller. shutdown mode; thermal shutPowered high-side pridown protection. mary-side auxiliary winding, Also aimed headphone ampliSC4911 comes MSOP-8 package fier applications, Maxim's MAX9720 features 50-µA startup current. amplifier operates from single Battery management charg1.8V 3.6V supply, exhibits only important aspects 0.0003% delivers power electronics today's mobile 50mW channel into 16-ohm electronics: system power manageload. 92dB power supply rejection ment least equally important. ratio allows operation from noisy example, digital cameras power supplies without additional fastest-growing segment portable power conditioning. Targeting electronics, include wide variety color displays that increasingly functions, such motors drive common today's mobile devices, zoom lens. Motorola (www.moto LX1744 boost controller from rola.com) offers MPC17550 0.7Microsemi (www.microsemi.com) ohm, monolithic, quad H-bridge, motor provides adjustable drive driver optimized applications, like adjustable bias supply output. digital cameras. control bipoThe company's LX1745 controller stepper motors four small includes drive motors simultaneously, well four adjustable bias supplies. With effimode output functions (forward, ciency rated over 90%, these regreverse, brake H-impedance). ulators designed hand-held
POWER SUPPLEMENT NOVEMBER 2003
applications, such PDAs, smart phones, digital cameras, dropout voltage regulators (LDOs) important element most portable designs. Micrel's (www.micrel.com) MIC2213 MIC2214 offer dual regulators (one rated source 150mA that source 300mA) with integrated power-on reset (POR) supervisor open drain driver. These allow user program delay alert processor when output settled intended voltage. open-drain, nchannel MOSFET used drive external LEDs backlighting applications. With 250mV dropout 300mA load, Si1871 from Vishay Siliconix (www.vishay. com) suitable applications requiring quiet voltage source, such circuits. Connecting external noise bypass capacitor device's "BP" further reduce noise level. Capable delivering peak currents 400mA, packaged 3mm2 PowerPAK MLP33 package, devices handle 1.2W power dissipation portable wireless applications. Delivering 500mA continuous current, SPX3819 from Sipex (www.sipex.com) 340mV dropout voltage operates with supply current 90µA, dropping nearly zero shutdown. lower current applications, Microchip offers TC1017 that deliver 150mA with dropout voltage 285mV supply current 53µA. Both these LDOs used variety battery-operated applications, such mobile phones, PDAs, pagers, detectors, flash modules, other smallsized devices.

Battery Power Managment Silicon Booming Market Jeff Shepard

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