MANAGING POWER ELECTRONICS VLSl and DSP-Driven Computer Systems phần 8 pptx

Synchronous Operation * Adju\tahlr Output Vbltage Option from 0.7V 10 VIR - ?.SV to 5.5'4 Input Voltage Range * Cu\ti~mzcd Fixed Output Voltage Optiirni - Up to 3UOrnA Output Cumnt

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266 Appendix C Fairchild Specifications for FSD210 and FSD200

FSDZIO, FSDZOO

Layout Considerations (for Flyback Convertor)

Figure 17 Layout Considerations for FSDZxO using 7DIP

15

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Appendix C Fairchild Specifications for FSD210 and FSD200 267

7-DIP

7 6 2 T I P 1762.0251

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268 Appendix C Fairchild Specifications for FSD210 and FSD200

Package Dimensions ( c o n m e d i

7-LSOP

FSDZIO FSD200

17

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Appendix C Fairchild Specifications for FSD210 and FSD2OO 269

PRODUCTS HEREIN TO IMPROVE RELIABILITY FUNCTION OR DESIGN FAIRCHILD DOES NOT ASSUME ANY

LlABlLlTYARiSlNG OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CiRCUlT DESCRIBED HEREIN, NEITHER

DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS

LIFE SUPPORT POLICY

OR SYSTEMS WITHOUT IHE EXPKESS WHITTEN AI'PROVAL OF THF PRES DFNT OF FAIRCrliLU SEM CONDLCTOR

CORPORAT ON As Lie: here r

1 Life support devices or systems are devices or systems

which (a) are intended for surgical implant into me body

or (b) support or sustain life, and (c) whose failure to

perform when propedy used m aacardance with

inslruchons for use provided in the labeling can be

reasonably expected to result in a significant injury of the

Usel

2 A critical component in any camponant of a life support

device or system whme failure lo perform can be

reasonablyexpectedlocauJBthefadur~afthe iifesupport device or svstem or lo affect its safetv or effectiveness

w fslrcnlsem,.un

4#2Dm5 D Om 001

, 2004 Faimbld SemlumOuc10( C~iporaUm

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This Page Intentionally Left Blank

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27 1

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272 Appendix D Fairchild Specifications for FAN5307

- 95% Efficiency Synchronous Operation

* Adju\tahlr Output Vbltage Option from 0.7V 10 VIR

- ?.SV to 5.5'4 Input Voltage Range

* Cu\ti~mzcd Fixed Output Voltage Optiirni

- Up to 3UOrnA Output Cumnt

* Fixed Frequency IMHL PWM Operation

* High hfilciency Power Stwr Mode

- 100% Duly Cycle Low Dropout Opcrirtioti

- Suit Start

- Dynamic Output Voltage Positioning

* 15pA Quiescent Currenl

* Excellcnl Lmad Tnmient Ke\ponsc

5-Lead SOT-21 Package

input range fmm 2.5V to J.5V The output volt~ge can he

either internally fixed or externally adlustable o ~ e r a wide range of 0.7V to 5.5V by ao external voltqe dividtr Cusloni

wtpnt vollages are iilw awihhle

At malerate and light loads pulse skipping modulation is used Dyniiinic voltage po\moning 15 applied and the output volmge is \hifted 0 8% above noniiniil value for mcrersed

hcadmom during load lransient* At higher loads the system

imtonratically switchm to currcnl inode PWM contiol

operating at I MH, A current inlode cuntnil loop with Iaht

trilnvcnt rcrponsr cnwres excellent line m d load regulation

I n Po-er S a w iniode the quir*cent current 1, reduccd to

I5pA in urdcr to achieve high efficiency and lo rncuir long

battery life In 5hut-dawn niodr, thc wpply ~urrcnf drop,

helow IpA The device i\ availilble nn J-lead SOT-23 dnd

6-lend MLPIx3mm package.;

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Appendix 0 Fairchild Specifications for FAN5307 273

Pin No Pin Name Pin Description

Enable Input Logic high enables the chip and logic low disables the chip and reduces

Feedback Input In case of fixed voltage options connect this pin directly to the output

supply current to <1 pA DO not float this pin

For an adlustable voltaoe ODtiOn connect this Din to the resistor divider

Pin Name Pin Description

EN Enable Input Logic high enables the chip and logic low disables the chip and reduces

supply current to i t p A Do not float this pin

Power ground Internal N-channel MOSFET IS connected to this pin

Feedback Input In case of fixed voltage options, connect this pin directly to the output

For an adjustable voltage option connect this pin to the resistor divider

TWVIEW

S - b d Yn-23 FAN5307IFAN5307SX

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PRODUCT SPECIFICATION FAN5307

Absolute Maximum Ratings

Voltage on any other pin

Power Dissipation (Continuous at TA = 25 C)

Lead Soldering Temperature (10 seconds)

Storage Temperature

Electrostatic Discharge (ESD) Proleclion Level (Note 2)

C D M Recommended Operating Conditions

Noles:

1 Derale above 25 C at a rate of 3 Y C N

2 Using Mil Std 883E method 3015 7(Human Body Model) and EINJESDZZC101-A (Charge Devlce Model)

3 Refer lo the applications section for further delaiis

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Appendix D Fairchild Specifications for FAN5307 275

FAN5307

-

PRODUCT SPECIFICATION

General Electrical Characteristics

ViN = 2 5V to 5 5V loUT = 200mA EN = VIN, CiN = 4 7pF Cour = 22pF, Lx = 10pH TA = -4OC lo +85"C unless

ofhewise noted Typical values are at T, = 25°C

Typ 1 Max 1 Units

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Electrical Characteristics for Fixed VoUT = 1.8V Version

VIN = 2 5 V to 5 5V loui = 200mA EN = ViN CiN = 4 7pF, C,,, = 22pF, Lx = 10pH TA = -40 C to +85"C unless otherwise noted Typical values are at TA = 25 C

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~~

Typical Performance Characteristics Inmi

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278 Appendix D Fairchild Specifications for FAN5307

'%

LOOIC

CONTROL

il

Detailed Operation Description

The FAN5307 is a atep-down convener operatrng in a

current-mode PFMPWM architecture with a typlcal switch-

ing frequency of IMHr At moderate to heavy loads, the con-

verter operates in pulse-width-modulation (PWM) mode At

light load, the converter enters a power-save mode (PFM

pulse skipping) to keep the oiliciency high

PWM Mode

In PWM mode the device opcrater at a fined frequency of

IMHr At the beginning of each clock cycle, the P-channel

tmnwtor 1s turned on The inductor current ramp* up and i\

monitored via an internal circuit The Pshannel witch ir

turned off when the \ensed current causes the PWM compar-

itor to tnp when the output voltage IS in regulation or when

the inductor current reaches the current limit (set internally

10 typically 520mA) After a minimum dead time the N-

channel transistor is turned on and the inductor current ramp

down A\ the clock cycle is completed, the N-channel witch

1s turned off and the next clock cycle s m s

PFM (Power Save) Mode

A\ the load current decreases and the peak mductoi current

no longer reaches the typical threshold of 80mA the con-

vener enters pulse-irequency~modulation (PFM) mode In PFM mode the device operates with a variable frequency and constant peak current thus reducing the quiescent current to minimum Consequently the high efficiency is maintained ill

light loads, As soon a$ the output voltage fiillr helow a

threshold set at 0 8% ahove the nominal value, the P-channel tran\istor is turned on and the inductor current ramps up The P-channel w i t c h turns off and the N-channel turns on

as thc peak inductor current is reached (typical 140mA)

The N-channel transistor I F turned off before the inductor current hecwnes negative At this lime the P-channel is switched on again starting the next pulre The converter continues these pulses until the high threshold (typical 1.61

7

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PRODUCT SPECIFICATION

PFM mode give- additional headroom for the voltage drop

during a load transient from light to full load The voltage

overshoot during this load tranarent ib also rninmmired due to

active regulation during turning on the N-channel rectifier

switch The device stay, in sleep mode until the output

voltage Blls below the low threshold The FAN5107 enten

the PWM mode 8s soon as the wiput valtage can no longer

he regulated in PFM with comtant peak current

100% Duty Cycle Operation

A\ the input voltage approaches the output voltage and the

duty cycle exceeds the typ~cal 95% the cunverter turns the

P-channel transistor continuously on In thia mode the output

voltage is equal to the inpur voltage minus the vultage drop

across the P-channel transistor

VOUT = Vt, - ILO*D x ( R d 0 ~ + RL), where

RdtON = P-chdnnel switch ON IS\NIIICZ

IWA" = output CUrrent

R,, = Inductor DC IIIIUBIICI

FAN5307

son start

The FAN5307 has dn interindl sofl-\tart circuit that limits the

inrush current during slam-up This prevents pwible voltage drop, of the mput voltage and eliminates the output voltage

overshoot The mtt-&xl i \ implemented a\ a digital circuit

increasing the switch cumnt in four \teps to the P-channel

current limit (520rnA) Typical start-up time fur a IOpF out-

put capacitor and n load current of 2WmA IS 500p\

Short-circuit Protection

The swilch peak cumnt L limited cycle hy cycle to a typical value of 520mA In the event of a output voltage short circuit the device uperatea ai minimum duty cycle, therefore the

average input current i i lypically IOUmA

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Adjustable Output Voltage Version

Thc output solrage for the adjustable version i s he1 hy the

external rc\~stor dirider, :I\ shown bclow

CDRH5D18-100 Efficiency

CDRH4D28-100

Murata LQH66SN100M

OIL Sumida CDRH3D16-6R8 Smallest

The inductor pariinictcr\ direcily related to device perfot-

mances are satoration c~rrent and dc resi\tmce The

kAN5307 operdle, with a typical inductor value 01 IOpH

The Ioivm the dc resimtance, the higher the efficienq For

iafuritioii current the inductor \hould he r m d hiphcr than

the mtixiniurn load current plu, half ,it the inductor npple

current that i\ calculated a\ tollowa:

wherc

I = Switching t.rrquenq

L = Inductor Vdue

AI, = Inductor Ripple Current

Table 1: Recommended Inductors

Input Capacitor Selection

Foor best pcrhrrnance.i a low ESR iiiput capacitor is

requ~rcti A ceramic cilpicitor of at least 4.7pF placed .is clwe to he input pin oi the device IS recornntcnded

Output Capacitor Selection

The FANS107's \=,itching trequency of IMHi ~ l l o w \ the use of a low ESK cerdrnic capacitor with il value of lOpF 10

22pF Thir provider low output boltape ripple In power save imodr the output wllage ripple IS independent of the output

~pacitor villue and thc ripple ib determined hy the internal comparator threshuld\ The typical output voltage ripple at

light laid 15 1 % of the inoimnrd output voltage

1 CaDacitor 1 Vendor 1 PartNumber I

value

4.7pF Taiyo JMK212BY475MG

JMK316BJ106KL C1201ZX5ROJ106K C3216X5ROJ106M 22uF Murata GRM32DR60J226K

Table 2: Recommended Capacitors PCB Layout Recommendations

Thc inherently high v d k currents and witching frequency

rrf the power w p p l i a require il ciirdul PCB Ir)ou~ deiign

Theretore, use wde inccs for the high cumnt path awl pl;icr the input capacitor the inductor and the output capaci-

tor a, cIo\c a\ powblc to the megrated circuit terminuls bar

the adjuclable %enion the resistor dividcr \ h d d he m111cd sway from the inductor to iivriid elcctrnnuignetic intrrfer- encc

The 6-leiid M1.P \ervon ut the IAN5307 5eparata the high

currcnt ground tmm the reference ground therefore i t i\

niom tolerant the PCB layout devgn snd \hua\ hettcr pcr-

formance

9

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RECOMMENDED LAND PATTERN

FAN5307

~

10

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Symbol

2 Package outline exclusive of solder plating

3 ElAJ Ref Number SC-74A

11

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1.8

1.8 Adlustable Adlustable

5-Lead SOT-23 Tape and Reel

5-Lead SOT-23 Tape and Reel 6-Lead 3x3mm MLP TaDe and Reel

FAN5307S 18X FAN5307MP18X FAN5307SX FAN5307MPX

Ordering Information

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO

AhY PRODUCTS rlFRF N TO MPROVt H t - AB L T Y FLhCT ON OH D t S GN FA RCr? -D DOES hOT ASS,ME

A h < AB

hE TrlER DOFS T Y AH SlhG OLT OF THE APPL CAT O h OH LSE OF AhY PRODLCT T LONdFY AhY X L N S E LhDER TS PATFhT RlG?lTS hOH T?!E R GirTS OF OThERS OR C RCL T DESCR OEU r3LHE.h

LIFE SUPPORT POLICY

FAIRCHILD S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES

OR SYSTEMS WITHOUT THE EXPRESS WRITEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR

CORPORATION As used herein

1 Life suppon devices 01 systems are devices or syslems 2 A ~ r l t l ~ a l component m any component of a life suppan

which (a) are intended forsurgical implant into the body or device or System whose failure to perform can he

(b) suppon or sustain life and (c) whose failure lo perform reasonably expected to cause the failure of the life support

when properly used m accordance wlth ~nstrualons for use device 01 system or to anect its safety or eflectweness

provided in the labeling can he reasonably expected lo

result in a significant inpry of the user

www fairchildsemi cam

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285

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286 Appendix E Fairchild Specifications for ACE1502

-

ACE1 502 Product Family

Arithmetic Controller Engine (ACExTM)

for Low Power Applications

General Description

The ACEtY)2 (Arithmetic Controller Engine) hmily 01 morocon-

lor applications requlrtng high pedormance Ihv power and Small

size I1 IS a lully ~talic part fabricated using CMOS IRhnology

voltage detection circuitry On-chip Clock and reset 1unct~ons

TSSOP and DIP packages

Features

8 Arilhmetc Contioller Engine

8 2K bytes on-board code EEPROM

8 Watchdog

8 16-bll multifunction timer Wlth dinereme capture

8 Hardware Bit-Coder (HBCI

8 On Chip o ~ ~ i l l a t o i

No external components

tp5 instruction cycle time i 1 2% accuracy

8 InSlluctlOn set geared lor block encryption

8 On-chip Power on Reset

8 Programmable read and write disable l~nctlons

8 Memory mapped 110

8 32 level Low Voltage Detection

8 Brown-out Reset

8 Sonware selectable 110 option

8 Fully ~talic CMOS

8 Single supply operation

8 1.OOO.OW data changes

8 8 and 14-pr SOIC TSSOP and DIP packages

8 In-circuit proorammino

Block and Connection Diagram

02002 Fairchild Semiconduclor Corparation 1 w w lslrchildreml Corn

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Appendix E Fairchild Specifications for ACE1502 287

Figure 2 ACEx Application Example (Remote Keyless Entry)

A

Figure 3 ACE1502 &pin SOiC and DIP Device Pinout

a) Normal Mode Operation b) Programming Mode Operation

SFT-IN LOAD iFl VCC GND

G3 4: L 2 t 2

Figure 4 ACE1502 &pin TSSOP Device Pinout

a) Normal Mode Operation

Figure 5 ACE1502 14-pin SOiC, TSSOP and DIP Device Pinout

a) Normal Mode Operation b) Programming Mode Operation

NC NCNCC

NC

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288 Appendix E Fairchild Specifications for ACE1502

ACE1502 DC Electrical Characteristics, vcc = 1 8 lo 3 6V

All rneasurernenfs are valid for arnbienl operating lernperature unless otherwise slated

ACE1502 Product Family Rev 1 7

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