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參數資料
| 型號： | TPS2480PW |
| 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： | 16/56頁 |
| 文件大小： | 1381K |
| 代理商： | TPS2480PW |
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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
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS2480PWR | 功能描述:熱插拔功率分布 Pos Vltg,Int Prot Dev/Hotswap Cntrlr 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 |
| TPS2481EVM-001 | 功能描述:電源管理IC開發工具 Eval Mod for TPS2481 RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS2481PW | 功能描述:熱插拔功率分布 Pos VltgInt Prot Dev/Hotswap Cntrlr 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 |
| TPS2481PWR | 功能描述:熱插拔功率分布 Pos VltgInt Prot Dev/Hotswap Cntrlr 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 |
| 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 |
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