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參數(shù)資料
型號： TPS65820RSHTG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 8-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56
封裝： 7 X 7 MM, GREEN, PLASTIC, QFN-56
文件頁數(shù)： 27/98頁
文件大?。?/td> 2290K
代理商： TPS65820RSHTG4
SYSTEM SEQUENCING AND TPS65820 OPERATING MODES
LOADPOWERUP DEFAULTSIN
I2CREGISTERS
CONNECT AC , USBORBAT PIN TO
OUT PIN
DISABLEPOWERGOODFAULT
DETECTION
INT PIN = HIGHIMPEDANCE
POR_FLAG= HI
OFF
ANY
STATE
V(AC) > VUVLO
OR
V(USB) > VUVLO
OR
V(BAT ) > VUVLO
V(OUT) < VUVLO
PGOODFAULT :
A NON - MASKEDBIT OF THE
POWER _GOODI2CREGISTER TOGGLES
FROMLO TOHI
STANDBY ON
: SM1 ANDSM2 SET INSTANDBY
MODEBY GPIOORI 2CCOMMAND
STANDBY OFF :
SM1 ANDSM2 EXIT STANDBY
MODEBY GPIOOR I2CCOMMAND
RESETTIMER :
VALUESET BY CAPACITOR
CONNECTED TO TRSTPWONPIN
I2CSOFT_RESETBIT
LOCATEDIN
SOFT_RESET REGISTER , BIT B0
POWERUP
SYS_IN INITIAL DEGLITCH
TIMER TINSYS EXPIRED
V
< V
THERMAL FAULT
I2C SOFT_RESET REGISTER
BIT SLEEP_MODE = HI
(SELF - CLEARED)
AND
OR
(SYS_IN)
(LOW_SYS) FOR 5 msec
PGOOD
FAULT
POWER
CYCLE
AND
SLEEP NOT SET BY
THERMAL FAULT
PROCESSOR
STANDBY STATE
RESPWRON = HI
PGFORSM1&SM2
ismasked
ENABLESTATE
RESPWRON=LO,
RESET I2CENGINE
- UP TIMER
SEQUENCESTATE
START INTEGRATED
SUPPLY START - UP SEQUENCE
RESPWRON = LO
POWERGOOD
CHECKSTATE
RESPWRON=HI
ENABLEPOWERGOODCOMPARATORS
INT PINMODESET BY INTERRUPT
CONTROLLER
=HI
RESETSTATE
RESPWRON=LO
START SYSTEMRESET PULSE TIMER
WHENHOT_RESET=HI
RESET
TIMEREXPIRES
V(SYS_IN) >
AND
V(OUT) > V
NOPGOOD
FAULT
STANDBY
ON
STANDBY
OFF
PGOOD
FAULT
RESPWRON=LO
V(HOT_RESET)=LO
OR
I2CSOFT_RESET
REGISTERBIT
SOFT_RST = HI
V(HOT_RESET)=HI OR
I2CSOFT_RESET
REGISTERBIT
SOFT_RESET = LO
(SELFCLEARED )
V(HOT _RESET)=LO
OR
I2CSOFT_RESET
REGISTERBIT
SOFT_RST= HI
UVLO
V
(LOW_SYS)
POWERUP DEFAULTSLOADED
IN ALL I2CREGISTERS
(ExceptINT_ACKn)
POWERDOWNRAILS,
WAIT 5msec
START BOOT
SLEEP STATE
ONLY RTC _LDOISON
POWERPATH ACTIVE
RESPWRON = 0
REGISTERCONTENTSNOT RESET
INTERRUPT CLEARED
RESET I2CENGINE
ENABLEI2CENGINE
RESET I2CENGINE
NORMAL MODE
RESPWRON
HOTPLUGDEGLITCH
START SYS_IN
INITIAL DEGLITCH TIMER
TINSYS
www.ti.com .............................................................................................................................................................. SLVS663B – MAY 2006 – REVISED APRIL 2008
The TPS65820 has a state machine that controls the device power up and power down sequencing. The main
operating modes are shown in the state diagram below:
Figure 28. TPS65820 State Diagram
POWER-UP – If the AC, USB and BAT pin voltages are below the internal UVLO threshold VUVLO (2.5 V typ) all
IC blocks are disabled and the TPS65820 is not operational, with all functions OFF. When an external power
source or battery with voltage greater than the VUVLO voltage threshold is applied to AC/USB or BAT pins the
internal TPS65820 references are powered up, biasing internal circuits. When all the main internal supply rails
are active the TPS65820 I2C registers are set to the power-up default values, shown in Table 3:
Copyright 2006–2008, Texas Instruments Incorporated
33
Product Folder Link(s): TPS65820
相關(guān)PDF資料
PDF描述
TPS65910RSLT POWER SUPPLY SUPPORT CKT, PQCC48
TPS65920A2ZCHR SPECIALTY CONSUMER CIRCUIT, PBGA139
TPS65920A2ZCH SPECIALTY CONSUMER CIRCUIT, PBGA139
TPS65920BZCHR SPECIALTY CONSUMER CIRCUIT, PBGA139
TPS65920BZCH SPECIALTY CONSUMER CIRCUIT, PBGA139
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TPS65835RKPT 功能描述:PMIC 解決方案 ADVANCED PMU RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
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