參數(shù)資料
型號(hào): TPS2341PHPR
廠(chǎng)商: TEXAS INSTRUMENTS INC
元件分類(lèi): 電源管理
英文描述: 4-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP48
封裝: POWERPAD, HTQFP-48
文件頁(yè)數(shù): 21/31頁(yè)
文件大?。?/td> 649K
代理商: TPS2341PHPR
TPS2341
SLUS513A MAY 2003 REVISED JULY 2004
28
www.ti.com
APPLICATION INFORMATION
+5-V Supply
Overload Trip Point
Desired ITRIP (nom) 7 A
R
SENSE +
V
RTRIP (nom)
I
TRIP (nom)
+ 42 mV
7A
+ 0.006 W NChoose6mW, 2% sense resistor.
I
TRIP(min) +
V
TRIP (min)
R
SENSE (max)
+ 35 mV
6.12 m
W +
5.72 A
I
TRIP(max) +
V
TRIP (max)
R
SENSE (min)
+ 48 mV
5.88 m
W +
8.16 A
Gate Capacitance
IINRUSH ≤ 5.72 A
ICLOAD = IINRUSH ILOAD = 5.72 A 5 A = 720 mA
from the chosen gate capacitance (shared with the 3.3-V MOSFET).
I
CLOAD + C
(
DV DT) + 3000 mF
200V s
+ 600 mA (max)
IINRUSH = ICLOAD + ILOAD = 600 mA + 5 A = 5.6 A
The nominal load turn on time is calculated in equation (14).
DT + DV(C i) + 5V
0.1
mF
20
mA +
25 ms
(10)
(11)
(12)
(13)
(14)
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