- 您現(xiàn)在的位置：買賣IC網 > PDF目錄98279 > TPS2306DWG4 (TEXAS INSTRUMENTS INC) 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 PDF資料下載
參數資料
| 型號： | TPS2306DWG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁數： | 15/29頁 |
| 文件大?。?/td> | 427K |
| 代理商： | TPS2306DWG4 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁
TPS2306
DUAL SEQUENCING HOT SWAP POWER MANAGER
SLVS368 APRIL 2001
22
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
Equation 16 can be used to calculate the time it takes for either of the loads to charge completely by substituting
that channel’s parameters, and solving for tST when vx(t) = VDCx. However, if the secondary channel ramp
turn-on is initiated by the primary channel’s output voltage level, then the first period of interest is the time when
the primary channel achieves the ramp-up command threshold. This time, designated tUP2 in equation 17, can
be found from:
t
UP2 +
R
L1
C
L1
n
IMAX
1
R
L1
IMAX
1
R
L1 *
V
RAMP
) t
SR
where:
V
RAMP = the programmed ramp-up threshold established using equation 11, and the subscripted “1”
indicates the primary, or controlling channel parameters
Once the controlled channel starts to turn on, its voltage ramp follows the same profile as the first channel.
Therefore, the total start-up time for the sequenced outputs is given by equation 18.
t
ST +
R
L2
C
L2
n
IMAX
2
R
L2
IMAX
2
R
L2 *
V
DC2
) t
UP2 )
t
SR
where:
V
DC2 = secondary channel supply input voltage
the subscripted “2” indicates the secondary, or controlled channel parameters
case 2: constant-current loads, no soft-start
Constant-current loads typically employ some type of undervoltage lockout (UVLO), or are achieved by holding
processors and logic in reset until the supply has stabilized. Therefore, the ramp profile has two stages; the first
stage from turn-on until the UVLO threshold (VUV in the following equations) is reached, and the remaining
period to ramp from VUV to the steady-state level, VDC. Once the load starts up, the input bulk capacitance is
charged only by the sourcing current in excess of the load current.
Assuming the primary load starts up prior to its voltage attaining the slave channel ramp-up threshold
(VUV1 < VRAMP), the time to reach that threshold can be estimated from:
t
UP2 +
C
L1
V
UV1
IMAX
1
)
V
RAMP *
V
UV1
IMAX
1 *
I
L1
) t
SR
where:
V
UV1 = the master channel UVLO threshold
V
RAMP = the controlled or slave channel ramp-up threshold
I
L1 = the master channel constant-current load
(17)
(18)
(19)
相關PDF資料 |
PDF描述 |
|---|---|
| TPS2340APFPRG4 | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP80 |
| TPS2341PHPR | 4-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP48 |
| TPS2343DDPG3 | 6-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO80 |
| TPS2343DDPR | 6-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO80 |
| TPS2345PWNRND | 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO24 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS2306EVM-001 | 功能描述:EVALUATION MODULE FOR TPS2306 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- 主要目的:電源管理，電池充電器 嵌入式:否 已用 IC / 零件:MAX8903A 主要屬性:1 芯鋰離子電池 次要屬性:狀態(tài) LED 已供物品:板 |
| TPS230QP | 制造商:Texas Instruments 功能描述: |
| TPS2310IPW | 功能描述:熱插拔功率分布 3-13V Dual w/Intrdpt Chl Circuit Breaking RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2310IPWG4 | 功能描述:熱插拔功率分布 3-13V Dual w/Intrdpt Chl Circuit Breaking RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2310IPWR | 功能描述:熱插拔功率分布 3-13V Dual w/Intrdpt Chl Circuit Breaking RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復。