λЁκ TFT LCD Panel ޑႝྍ೛ी

λЁκ TFT LCD Panel ‫ޑ‬ႝྍ೛ी
๱/ම୯ଈ!
˧/߻‫ق‬
߈ԃٰǴᒿ๱న඲ᡉҢᏔȐLiquid Crystal Display, LCDȑ࣬ᜢ‫זޑೌמ‬ೲว
৖Ǵ٬ளన඲ᡉҢᏔςቶ‫ޑݱ‬ᔈҔӧӚሦୱύǴԿϞѠ᡼ςԋࣁӄౚ LCD Panel
‫ޑ‬ғౢख़ᙼǶᆶ໺಍‫ޑ‬഍ཱུ৔ጕᆅȐCathode Ray Tube, CRTȑᡉҢᏔКၨଆٰǴ
ᗨฅన඲ᡉҢᏔӧ୏ᄊៜᔈ฻Бय़ۘค‫کݤ‬഍ཱུ৔ጕᆅᡉҢᏔ࣬ϰእǴՠ‫ڀځ‬Ԗ
ᡏᑈλǵख़ໆᇸǵե઻ႝໆǵόϸӀǵեᒟ৔ǵฝय़คଢᛉϷคᓉႝ฻ᓬᗺǴς
٬ளన඲ᡉҢᏔ೴ᅌӦ‫ڗ‬ж໺಍‫ޑ‬഍ཱུ৔ጕᆅᡉҢᏔԋࣁ౜Ϟ྽आ‫ޑ‬ѳय़ᡉҢ
Ꮤ(Flat-Plane Display, FPD)Ƕ
΋૓Զ‫ق‬Ǵన඲ᡉҢᏔҁ‫ي‬ሡा΋ಔङӀႝၡǴаϷ΋ಔଯਏ౗‫ୃޑ‬ᓸႝྍ
ٰ௓‫ڋ‬ჹКǴЪԜୃᓸႝྍѸሡाૈ୼ӧε‫ॄޑ‬ၩᡂ୏ጄൎϣ೿ᆢ࡭ᛙ‫ޑۓ‬ᒡр
ႝᓸǶҗ‫ܭ‬Ҟ߻λЁκన඲ᡉҢᏔ‫࣬ޑ‬ᜢౢࠔ֡රᖓࠠϯว৖Ǵ٬ளλЁκన඲
ᡉҢᏔ‫ޑ‬ङӀႝၡᆶୃᓸႝྍҭ໪۳ࡧѳϯ೛ीǶӢԜǴӵՖ೛ीᡏᑈλǵਏ౗
ଯ‫ޑ‬న඲ᡉҢᏔङӀႝၡᆶୃᓸႝྍǴςԋࣁౢࠔ೛ी΢ख़ा‫ޑ‬ፐᚒǶԖ᠘‫ܭ‬
ԜǴҁЎஒᇥܴӵՖٰ೛ीр΋ᡏᑈλǵਏ౗ଯ‫ޑ‬న඲ᡉҢᏔୃᓸႝྍ‫ٮ‬ᔈᏔǶ
˨.ႝၡࢎᄬ
΋૓ LCD ‫ޑ‬ႝྍሡ‫؃‬х֖ङӀ(Backlight)‫ޑ‬ႝྍග‫کٮ‬य़݈(Panel)‫ޑ‬ႝྍ
ᆅ౛Ǵӵკ 1 ‫܌‬ҢǶ
˩˶̂̀
ˣ̂̊˸̅
˦̂̈̅˶˸
ˠ˴́˴˺˸̀˸́̇
˚˴̇˸ʳ̂́
˟˖˗ʳˣ˴́˸˿
˚˴̇˸ʳ̂˹˹
˕˴˶˾˿˼˺˻̇ʳ˗̅˼̉˸̅
˟˖˗ʳ˕˴˶˾˿˼˺˻̇
კ 1 LCD ႝၡࢎᄬკ
˚˴̀̀˴
ҁЎӧ௖૸Ԗᜢన඲ᡉҢᏔୃᓸႝྍ‫ޑ‬೛ीǴԶ୷ҁ΢న඲ᡉҢᏔ‫ୃޑ‬ᓸႝ
ྍ‫ٮ‬ᔈᏔѸ໪ाૈග‫ٮ‬ΟಔᒡрႝྍǴ‫ځ‬ύ΋ಔࢂ Source ႝྍǴќѦ‫ٿ‬ಔ߾ࢂ
΋ࣁ҅ႝᓸќ΋ࣁॄႝᓸ‫ ޑ‬Gate ႝྍǶҗ‫ܭ‬న඲ᡉҢᏔӧᏹբਔǴаᗉխన඲
ཞᚯǴన඲ႝཱུ΢‫ޑ‬ႝᓸѸ໪όᘐ‫ޑ‬ᙌᙯǴ Vcom ႝᓸ൩ࢂ଺ࣁԜҔ೼ǶќѦ
ᗋሡाԖ଺ Gamma ਠ҅‫ޑ‬ႝᓸǶ
໺಍‫ୃޑ‬ᓸႝྍ೛ीБԄǴࢂҗ΋ಔ DC-DC ‫ޑ‬ϲᓸᙯඤᏔٰౢғ Source
ႝྍǴӆճҔԜᙯඤᏔ‫ ޑ‬PWM Ϫဦૻဦ Charge Pump р‫ॺך‬ा‫ ॄ҅ޑ‬Gate
ႝྍǶӵკ 2 ‫܌‬ҢǶ
C2
C3
+
+
Gate
on C4
_
C6
C5
Gate
off
_
L
+
+
VIN
S
C1
_
Source
LOAD
_
Control Circuit
კ 2 ໺಍ LCD ୃᓸႝྍπբኳԄ
೭ᅿ଺‫ޑݤ‬ӳೀࢂӧ‫ܭ‬ѝሡा΋ಔϪඤԄႝྍ IC Ǵ‫܌‬ሡᡏᑈၨλǴฅԶǴ҅ॄ
‫ ޑ‬Gate ႝྍග‫ࢂٮ‬җϲᓸᙯඤᏔٰ‫ޑ‬Ǵ٠ؒԖӣ௤௓‫ૻڋ‬ဦǴ‫܌‬аᛙᓸ‫ޑ‬੝‫܄‬
཮ၨৡǶ᏾ӝࠠ‫ޑ‬న඲ᡉҢᏔୃᓸႝྍ IC ‫ע‬ΟಔᙯඤᏔ೿ϣࡌӳΑǴ٠ЪᗋԖ
଺໒ᐒ‫ׇ‬ӈ‫ޑ‬௓‫ڋ‬ϷᒱᇤୀෳǶ
˩.೛ीჴ‫ٯ‬
ۭΠஒа AIC1882ǴᒡΕႝᓸࣁ 3.3V ‫ޑ‬௃‫ٯࣁݩ‬ηǴᇥܴӵՖа AIC1882
ౢғ΋ Source ႝྍࣁ 10Vǵ҅‫ ޑ‬Gate ႝྍࣁ 18V Զॄ‫ ޑ‬Gate ႝྍࣁ-5V ‫ޑ‬
న඲ᡉҢᏔୃᓸႝྍႝၡǶ
3-1 ᔈҔႝၡ
კ 3 ࣁన඲ᡉҢᏔϐୃᓸႝྍ‫ޑ‬ᔈҔႝၡǴа؊ՎъᏤᡏ‫܌‬௢р‫ޑ‬Οಔᒡ
рϲᓸԄᙯඤᏔ AIC1882 ࣁ‫ٯ‬ηǶAIC1882 х֖΋ಔ‫ۓڰ‬ᓎ౗ǵଯਏ౗‫ޑ‬ϲᓸ
ԄᙯඤᏔǴᗋԖ‫ٿ‬ಔа charge-pump БԄᛙᓸᒡр‫ॄ҅ޑ‬ႝྍǶ‫ځ‬ύϲᓸԄᙯ
ඤ Ꮤ ‫ ܌‬٬ Ҕ ‫ ޑ‬௓ ‫ ڋ‬Б Ԅ ࣁ ႝ ࢬ ኳ Ԅ ‫ ݢ ે ޑ‬ቨ ࡋ ፓ ᡂ (Current-Mode
Pulse-Width-Modulation)Ǵᏹբᓎ౗ࣁ 1MHzǴႝၡ੝‫܄‬ёၲ‫זډ‬ೲ‫୏ޑ‬ᄊៜᔈ
੝‫܄‬Ǵ٠ё፾྽Ӧ෧ϿѦ೽ᔈҔႝၡ‫ޑ‬ϡҹᡏᑈǶ
AIC1882 ҁ‫ي‬ϣࡌ҅ǵॄ charge-pump Ǵ٠ЪԖ Gate ᒡрႝᓸ‫ޑ‬ᛙᓸӣ
௤௓‫ڋ‬ႝၡٰ٬‫ځ‬ᒡрႝᓸૈᛙӧ‫܌‬ሡ‫ޑ‬ႝᓸྗՏǶ
D1
Vmain = +10V, 200mA
L1
6.8uH
C1
SR24
10uF
1
2
R3
Vin = 2.7~5.5V 100k
3
R4
4
10
C5
0.1uF
5
6
C7
7
0.1uF
8
U1
16
TGND
FB
14
PGND
IN
SUPP
GND
DRVP
REF
SUPN
FBP
DRVN
FBN
SHDN
0.1uF
10uF
13K
15
LX
INTG
C2
C3
R2
AIC1882
RDY
R1
91K
Vmain
C4
13
12
0.1uF
11
10
Vmain
C6
0.1uF
D2
9
C8
SW1
0.1uF
BAT54S
SW SPDT
C9
R5
R6
680pF
R8
R7
49.9k
200k
49.9k
C11
0.22uF
Vpos = +18V, 10mA
670k
C10
1uF
C13
1uF
Vneg = -5V, 20mA
D3
C12
0.1uF
BAT54S
კ 3 ᔈҔႝၡ
3-2! JD фૈϟಏ
1.໒ᐒ‫ׇ‬ӈ
ε೽ϩ‫ ޑ‬LCD य़݈೿཮Ԗሡा‫ޑ‬ႝྍ௴୏‫ׇ‬ӈǶAIC1882 ӧϣ೽‫ୖޑ‬Եႝ
ᓸ(Reference Voltage)ଆٰࡕǴSource ‫ޑ‬ϲᓸᙯඤᏔௗ๱௴୏ǴԶӧϲᓸᙯඤ
Ꮤၲ‫ډ‬ᛙ‫ࡕۓ‬Ǵॄᓸ‫ ޑ‬Gate ႝྍௗ๱௴୏Ǵӧॄᓸ‫ ޑ‬Gate ႝྍၲ‫ډ‬ᒡрॶ‫ޑ‬
88%ࡕǴ҅ᓸ‫ ޑ‬Gate ႝྍௗ๱௴୏Ǵӧ҅ᓸ‫ ޑ‬Gate ႝྍၲ‫ډ‬ᒡрॶ‫ ޑ‬90%
ࡕǴႝྍ‫ྗޑ‬ഢֹԋૻဦ(Power-ready)཮வଯႝՏ܎‫ډ‬եႝՏǴаᇥܴΟಔႝ
ྍૻဦࣣ௴୏ֹԋǶ
2.ࢋ‫୏௴܄‬
AIC1882 ϣࡌ‫ޑ‬Οಔႝྍᒡрӧ໒௴ਔࣣԖ଺ࢋ‫୏௴܄‬ǴΨ൩ࢂᒡрႝᓸ
ό཮ᕓ໔໒௴Ǵ཮ӧ΋ࢤਔ໔ϣ(൳ঁ ms)ၲ‫ډ‬ᒡрᛙᓸॶǴࢋ‫୏௴܄‬ёа෧Ͽ
ᒡрႝᓸ‫ޑ‬ၸፂ(overshoot)ϷᗉխᒡΕ‫ޑ‬෢Εႝࢬ(Inrush current)Ƕ
3.ྗഢֹԋૻဦ
ྗഢֹԋૻဦ(power-ready)ࢂ΋ঁཱུؕ໒ၡ(open drain)‫ޑ‬ႝၡᒡрǶѦ೽
཮ௗ΋ঁႝߔ‫ ډ‬Vcc ࣁ high ྗՏǴ྽Οಔႝྍᒡр೿ς࿶௴୏ֹԋࡕǴ཮ଌр
ૻဦ٬ MOSFET Ѻ໒Ǵ٬ளྗഢֹԋૻဦ܎‫ ډ‬low ྗՏǴᙖаዴᇡΟಔᒡрႝ
ྍ೿ς࿶ྗഢֹ౥Ƕ
4.ၸႝࢬߥៈ
AIC1882 ϣࡌၸႝࢬߥៈфૈǴ྽ᒡрॄၩႝࢬၸεਔǴAIC1882 ཮ୀෳ
‫ډ‬ႝགႝࢬǴ྽ႝགႝࢬ‫ޑ‬ঢ়ॶၲ‫ ډ‬1.5A ਔǴ཮ज़‫ڋ‬Րॄၩႝࢬόӆ۳΢‫ܜ‬ၩǴ
аߥៈϣ೽‫ޑ‬Ϫඤ໒ᜢ MOSFETǶ
5.ၸ዗ߥៈ
AIC1882 ϣࡌၸ዗ߥៈ(Thermal shutdown)Ǵ྽ྕࡋၲ‫ ډ‬160ʚਔǴAIC1882
ߡ཮٬Οಔᒡр೿ᜢ௞Ǵаߥៈϣ೽ႝၡǴ྽ྕࡋ۳Πե 20ʚ(Thermal
Hysteresis)ࡕǴ཮ӆख़ཥ௴୏ ICǶ
3-3 ຼᜐϡҹᒧ᏷
ϲᓸᙯඤᏔ(Boost Converter)
I. ϲᓸႝག (L)
ϲᓸႝག‫ޑ‬གॶελᆶᙯඤᏔ‫ޑ‬ᏹբᓎ౗ଯեҭ཮ቹៜ‫ډ‬ႝགႝࢬ‫ޑ‬ᅎ‫ݢ‬
ελǶ
Lt
§
Vin
V ·
¨¨1 in ¸¸ (1)
f OSC ˜ 'I L © Vmain ¹
‫ځ‬ύfOSCࣁϲᓸԄᙯඤᏔ‫ޑ‬ᏹբᓎ౗Ǵ̴ILࣁႝགᅎ‫ݢ‬ႝࢬǶӧԜ೛ीύǴ೛‫ۓ‬
fOSC=1MHzǵ̴IL=350mAǴ߾ϲᓸႝག‫ޑ‬ελёҗΠԄ،‫ۓ‬ϐ
Lt
Vin
D | 6.3PH (2)
f OSC ˜ 'I L
‫܌‬аᒧ᏷ϲᓸႝག L ࣁ 6.8μHǶ
ԜѦǴࣁᗉխႝག៓޻‫ޑ‬Ⴋ‫ک‬Ǵ‫܌‬ᒧҔ‫ޑ‬ႝག‫ޑ‬Ⴋ‫ک‬ႝࢬѸ໪ε‫ܭ‬ᙯඤႝ
ၡ‫ޑ‬നεႝགႝࢬঢ়ॶǶଷ೛നεᒡрႝࢬIOUT(MAX)ࣁ 300mAǵႝၡ‫ޑ‬ᙯඤਏ౗
Kࣁ 0.8Ǵ߾നεႝགႝࢬ‫ޑ‬ঢ়ॶёҗΠԄ،‫ۓ‬ϐ
Vin
I PEAK I IN max D
2 u f OSC ˜ L
I OUT ( MAX ) ˜ Vmain
K ˜ Vin
§
Vin
V ·
¨¨1 in ¸¸ | 1300mA (3)
2 u f OSC ˜ L © Vmain ¹
II. ᒡΕႝ৒ (CIN)
ࣁफ़եф౗Ϫඤ໒ᜢ‫זޑ‬ೲϪඤ‫܌‬ౢғ‫ޑ‬ᒡΕႝᓸᅎ‫ݢ‬Ǵࡌ᝼௦Ҕ‫ڀ‬Ԗե
฻ਏՍᖄႝߔȐEquivalent Series Resistance, ESRȑ‫ޑ‬ഏౠႝ৒ٰբࣁᒡΕႝ
৒ǶӧԜ೛ीύǴᒡΕႝ৒CINᒧҔ 10μF/10V‫ޑ‬ഏౠႝ৒Ƕ
III. ᒡрႝ৒ (COUT)
ऩ೛‫ۓ‬നεᅎ‫ݢ‬ႝᓸ̴VOUT1ࣁ 30mVǴ߾നλᒡрႝ৒ёҗ(4)،‫ۓ‬ϐ
I
COUT t OUT MAX D | 6.7 PF (4)
f OSC ˜ 'Vmain
ԜѦǴᒡрႝᓸ‫ޑ‬ᅎ‫ݢ‬ελҭ‫ډڙ‬ᒡрႝ৒ҁ‫ ي‬ESR ελ‫ޑ‬ቹៜǶ
'Vmain 'I L ˜ ESR (5)
ӧԜ೛ीύǴᒡрႝ৒COUTᒧҔ 10μF/16V‫ޑ‬ഏౠႝ৒Ƕ
IV/ ϩᓸႝߔ (R1ᆶR2)!
ӧࡑᐒਔ໔Ǵϩᓸႝߔஒ཮࡭ុ‫ૈ઻੃ޑ‬ໆǴӢԜᒧҔၨε‫ޑ‬ϩᓸႝߔǴஒ
ё፾ࡋ‫ޑ‬ᕭ෧ᙯඤႝၡ‫ࡑޑ‬ᐒႝࢬǶӧԜ೛ीύǴᒧ᏷R2ࣁ 13k:Ǵ߾R1ёҗΠ
Ԅ،‫ۓ‬ϐ
Vmain
R1
§
R ·
1.25 u ¨¨1 1 ¸¸ (6)
© R2 ¹
91 ҏk:
V. ံᓭᑈϩႝ৒ (C˦)
ࣁᗉխҗ‫سܭ‬಍‫ޑ‬όᛙ‫ۓ‬೷ԋᒡрႝᓸ‫ޑ‬ᅎ‫ݢ‬ၸεᆶႝၡ‫ޑ‬ᙯඤਏ౗ၸ
եǴAIC1882 ሡ΋ᚐѦ‫ံޑ‬ᓭᆛၡٰံᓭ‫ځ‬ӣ௤଑ၡǶ΋૓‫ံޑ‬ᓭᆛၡǴ཮җ
΋ঁRcompٰ೛‫ۓ‬ӣ௤଑ၡ‫ޑ‬ቚ੻аගܹႝၡ‫୏ޑ‬ᄊៜᔈǶ྽Rcomp،‫ࡕۓ‬Ǵ߾཮
Սᖄ΋ঁ Ccomp ٰ೛‫ۓ‬ӣ௤଑ၡ‫ޑ‬႟ᗺٰᆢ࡭ႝၡ‫ޑ‬ᛙ‫܄ۓ‬Ǵനࡕӆ٠ᖄ΋ঁ
Ccomp1ࢂाҔٰ੃ନҗᒡрႝ৒ᆶ‫ځ‬ҁ‫ޑي‬ESR‫܌‬೷ԋ‫ޑ‬႟ᗺǶӧAIC1882 ‫ޑ‬೛
ीύǴӢࣁRcompς࿶ϣࡌӧICϣ೽ΑǴԶCcomp˞ӧჴሞ‫ޑ‬ӣ௤ᆛၡύ٠όሡा
೭ঁႝ৒ٰံᓭǴ‫܌‬аѦ೽ѝሡाᒧ௠΋ঁံᓭᑈϩႝ৒C˦=680pFջёၲ‫ډ‬଑
ၡᛙ‫่݀ޑۓ‬Ƕ
кႝᔅ੅(Charge Pump)
I. ०Ⴍႝ৒(Flying Capacitor)
०Ⴍႝ৒ࢂ଺ࣁкႝᔅ੅໺ሀૈໆ‫ޑ‬ύᝩઠǴ΋૓Զ‫ق‬Ǵ०Ⴍႝ৒‫ޑ‬৒ॶε
ऊ‫ک‬ᒡрႝ৒ऊࣁ 1:10 ‫ޑ‬КॶǶӧեᒡрႝࢬ‫ޑ‬ᔈҔ௃‫׎‬ΠǴ0.1uF ࣁε೽ϩ
‫ޑ‬०Ⴍႝ৒৒ॶǶ
II. ᒡрႝ৒ (COUT)
ᒡрႝ৒‫ޑ‬৒ॶᆶႝ৒‫ޑ‬ESR཮ቹៜ‫ډ‬ᒡр‫ޑ‬ᅎ‫ݢ‬ႝᓸǶଷ೛നεᒡрႝࢬ
IOUT=30mA Ǵ fOSC ࣁ к ႝ ᔅ ੅ ‫ ޑ‬Ϫ ඤ ᓎ ౗ 500kHz Ǵ ന ε ᒡ р ᅎ ‫ ݢ‬ႝ ᓸ
Vripple=50mVǴ߾നλᒡрႝ৒ёҗаΠϦԄٰीᆉள‫ډ‬:
COUT t
I OUT
=0.6uF
2 u f OSC u Vripple
‫܌‬аᒧ᏷ᒡрႝ৒COUT=1uFǶ!
III. ᒡрႝᓸीᆉ(R5,R6,R7 ᆶR8)
҅ॄᓸкႝᔅ੅‫ޑ‬ᒡрႝᓸॶёаҗΠӈϦԄள‫ډ‬:
R5
§V
·
R7 ¨ pos 1¸ ¸
¨
© Vref
¹
R6
§V ·
R8 ¨ neg ¸ ¨V ¸
© ref ¹
‫ځ‬ύVposࣁ҅ᓸкႝᔅ੅ႝᓸᒡрǴVnegࣁॄᓸкႝᔅ੅ႝᓸᒡрǴVrefࣁୖ
ԵႝᓸॶǶ‫ॺך‬ᒧ᏷ R5
670 ҏk:Ǵ R6
200 k:Ǵ R7
50 k:Ǵ R8
50 k:Ƕ
ԿԜǴΟಔᙯඤᏔ‫ຼޑ‬ᜐϡҹॶςεठीᆉрٰǶ୷ҁ΢ࣁ‫؃‬᏾ᡏᡏᑈૈၲ
‫ډ‬നλϯǴႝགᆶႝ৒‫ޑ‬ᒧҔа಄ӝႝᓸႝࢬ‫ޑ‬ೕ਱ջёǴϡҹ‫ޑ‬ᡏᑈ߾ёаᅰ
ёૈ‫ޑ‬λǶ
˪/ෳ၂่݀
ҁЎаᒡΕႝᓸࣁ 3.3Vǵᒡр‫ ޑ‬Source ႝᓸǵ҅‫ ޑ‬Gate ႝᓸᆶॄ‫ ޑ‬Gate
ႝᓸϩձࣁ 10Vǵ18V ᆶ-5V ‫ޑ‬௃‫ٯࣁݩ‬Ǵჴሞᇙբკ 3 ϐୃᓸႝྍ‫ٮ‬ᔈᏔǴ٠
຾ՉႝၡໆෳǶკ 4 ࣁ྽ Source ႝྍǵ҅‫ ޑ‬Gate ႝྍᆶॄ‫ ޑ‬Gate ႝྍ‫ޑ‬ᒡр
ႝࢬϩձࣁ 100mAǵ10mA ᆶ 10mA ਔǴϲᓸᙯඤᏔ‫ޑ‬Ϫඤ‫׎ݢ‬ᆶႝགႝࢬ‫ݢ‬
‫׎‬Ƕკ 5 ࣁ྽ Source ႝྍᒡрႝࢬவ 50mA ᡂϯ‫ ډ‬200mA ‫ޑ‬ᒡр୏ᄊៜᔈ‫ݢ‬
‫׎‬Ƕკ 6 ߾ࣁ Power-ready ૻဦ߄ҢǴ྽Οಔᒡр೿ྗഢֹԋࡕǴPower-ready
ૻဦ཮வଯྗഢ܎‫ډ‬եྗՏǶკ 7 ࣁ྽ Source ႝྍǵ҅‫ ޑ‬Gate ႝྍᆶॄ‫ ޑ‬Gate
ႝྍ‫ޑ‬ᒡрႝࢬϩձࣁ 200mAǵ10mA ᆶ 10mA ਔǴΟಔᒡрႝᓸૻဦ‫୏௴ޑ‬
‫׎ݢ‬Ƕკ 8 ࣁ྽҅‫ ޑ‬Gate ႝྍᆶॄ‫ ޑ‬Gate ႝྍ‫ޑ‬ᒡрႝࢬࣣࣁ 10mA ਔǴ
Source ႝྍࣁόӕॄၩႝࢬΠ‫܌‬Ң‫ޑ‬ႝၡᙯඤਏ౗Ǵ᏾ᡏႝၡ‫ޑ‬ᙯඤਏ౗നଯ
ёၲ‫ ډ‬81%Ƕ
VLX
Output ripple
IL
Iout
!!!!!
!
კ 4 ϲᓸᙯඤᏔ‫ޑ‬Ϫඤ‫׎ݢ‬ᆶႝགႝࢬ
კ 5 ϲᓸᙯඤᏔ୏ᄊៜᔈ‫!׎ݢ‬
VSHDN
VSHDN
Vmain
Vpos
Vneg
RDY
Vpos
კ 6 Power-ready ૻဦ߄Ң ! ! ! ! !
! ! კ 7 Οಔႝᓸ‫ ޑ‬Power-on sequence!
!
˸˹˹˼˶˼˸́˶̌
ˌ˃ˁ˃˃ʸ
ˋ˃ˁ˃˃ʸ
˸˹˹˼˶˼˸́˶̌ʻʸʼ
ˊ˃ˁ˃˃ʸ
ˉ˃ˁ˃˃ʸ
ˈ˃ˁ˃˃ʸ
ˇ˃ˁ˃˃ʸ
ˆ˃ˁ˃˃ʸ
˅˃ˁ˃˃ʸ
˄˃ˁ˃˃ʸ
˃ˁ˃˃ʸ
˃
ˈ˃
˄˃˃
˄ˈ˃
˿̂˴˷ʻ̀˔ʼ
˅˃˃
˅ˈ˃
კ 8 ᙯඤਏ౗
˫.่ፕ
җ‫ܭ‬λЁκన඲ᡉҢᏔ‫࣬ޑ‬ᜢౢࠔς࿶ԋࣁѱ൑ЬࢬǴӢԜӵՖ೛ीᡏᑈ
λǵਏ౗ଯ‫ޑ‬ႝྍᙯඤᏔςԋࣁన඲ᡉҢᏔ࣬ᜢౢࠔ೛ी΢ख़ा‫ޑ‬΋ᕉǶԖ᠘‫ܭ‬
ԜǴҁЎଞჹλЁκన඲ᡉҢᏔ‫܌‬ሡ‫ୃޑ‬ᓸႝྍ೽ϩǴග‫ٮ‬а΋ᗭϣࡌΟಔᒡр
‫ޑ‬ႝྍᙯඤ IC ٰ೛ीр΋ӝ፾‫ޑ‬న඲ᡉҢᏔୃᓸႝྍ‫ٮ‬ᔈᏔǴ٠‫ܭ‬Ўύග‫ٮ‬ӵ
ՖᒧҔӝ፾‫ޑ‬ႝၡຼᜐϡҹٰ٬ள᏾ᡏᙯඤႝၡૈᛙ‫ޑۓ‬πբЪਏ౗ၨଯ٠٬
‫ځ‬ᡏᑈૈၨλϯǶ