參數(shù)資料
型號(hào)： TPS2481PW
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： POWER SUPPLY SUPPORT CKT, PDSO20
封裝： GREEN, PLASTIC, TSSOP-20
文件頁數(shù)： 16/56頁
文件大小： 1381K
代理商： TPS2481PW
2
LIM(ACT)
VCC(MAX)
LIM(ACT)
VCC(MAX)
LIMIT(NOM)
2
LIMIT(NOM)
LIM(ACT)
P
V
For P
V
I
2
I
2
P
<
=
+
O
ON
C
: t
VCC(MAX)
LIM(ACT)
VCC(MAX)
LIMIT(NOM)
V
For P
V
I
O
ON
C
: t
=
2
LIM(ACT)
VCC(MAX)
2
LIMIT(NOM)
LIM(ACT)
P
V
1000
13 5
1000
249W
416
2
I
2
P
2
50
2
249W
=
+
=
+
=
O
ON
C
F
. V
F
t
s
A
m
SOURCE(MAX)
T
O-TOL
T-TOL
TMR-TH(MAX)
I
C
1
C
V
ON
t
(
)
=
+
T
34
C
416
1
0 2
0 1
4 48
4.1V
=
+
=
A
s (
.
. )
.
nF
m
1
2
EN_H(MAX)
1
55 22
V
ON
EN
V
R
(
)
.
k
=
-
=
W
1
2
1
2
EN_H(MAX)
EN_L(MIN)
2
V
EN
ON
OFF
EN
R
V
,V
R
+
=
=
54 9
10
1 38
8 96
10
ON
. k
k
V
.
V
.
V
k
W +
W
=
=
W
54 9
10
1 22
7 92
10
OFF
. k
k
V
.
V
.
V
k
W +
W
=
=
W
www.ti.com
SLUS939B – APRIL 2010 – REVISED DECEMBER 2010
4. Choose the Timer Capacitor, CT and Turn On Time
The turn on time tON, represents the time it takes the circuit to charge up the output capacitance CO and load. CT
programs the fault time and should be chosen so that the fault timer does not terminate prior to completion of
start up. The turn on time is a function of the type of control; current limit, power limit, or dV/dt control. The next
equation calculates tON for both the power limit and current limit cases and assumes that only CO draws current
during startup.
(17)
(18)
(19)
The next equation allows CT to be selected assuming that only CO draws current during startup. TPS2480/81
timer current source and capacitor tolerances are accounted for.
(20)
(21)
Choose CT = 0.01 F
5. Choose the Turn On Voltage, VON and the EN Resistors, REN1 and REN2
When the EN pin is used as an analog control, the desired turn on voltage, VON can be used to select the EN
resistors. Select REN1 and REN2 taking into account device leakage currents. Choose REN2 =10 k.
(22)
Choose REN2 = 54.9 k
The actual turn on and turn off voltages, VON(ACT) and VOFF(ACT) can be calculated as follows:
(23)
(24)
(25)
Copyright 2010, Texas Instruments Incorporated
23
Product Folder Link(s): TPS2480 TPS2481
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TPS2482PW 制造商:Texas Instruments 功能描述:Hot Swap Controller 1-CH 80V 20-Pin TSSOP Tube 制造商:Texas Instruments 功能描述:IC CTRLR HOT SWAP 9-36V 20TSSOP 制造商:Texas Instruments 功能描述:36V Hotswap Cntlr w/ Digital Pwr Monitor
TPS2482PWR 制造商:Texas Instruments 功能描述:Hot Swap Controller 1-CH 80V 20-Pin TSSOP T/R 制造商:Texas Instruments 功能描述:36V Hotswap Cntlr w/ Digital Pwr Monitor
TPS2483EVM-157 功能描述:電源管理IC開發(fā)工具 TPS2483 EVAL MOD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS2483PW 功能描述:Hot Swap Controller, Monitor 1 Channel General Purpose 20-TSSOP 制造商:texas instruments 系列:- 包裝:管件 零件狀態(tài):有效 類型:熱交換控制器，監(jiān)控器 通道數(shù):1 內(nèi)部開關(guān):無 應(yīng)用:通用 特性:自動(dòng)重試，I2C，UVLO 可編程特性:限流，故障超時(shí) 電壓 - 電源:9 V ~ 80 V 電流 - 輸出（最大值）:- 工作溫度:-40°C ~ 85°C 電流 - 電源:2mA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商器件封裝:20-TSSOP 功能引腳:EN，PG，PROG，TIMER 標(biāo)準(zhǔn)包裝:70
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