參數(shù)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(shù): 3/29頁
文件大小: 427K
代理商: TPS2306DWG4
TPS2306
DUAL SEQUENCING HOT SWAP POWER MANAGER
SLVS368 APRIL 2001
11
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
fault output logic
The FAULT signal is an open-drain output which is high-impedance under any conditions which cause the
outputs to be switched off, including an overcurrent or fault time-out on either supply, removal of the external
enable signal with subsequent GATEx ramp-down, or an undervoltage condition on either supply input. Refer
to the Application Information section for additional details on using this output.
The circuit diagram of Figure 2 shows a dual hot-swap application in which the TPS2306 is used to hot swap
and sequence 5.0-V and 3.3-V supplies. The total input bulk and filter capacitance associated with the +5.0V
load is represented in the diagram by CLOAD1. CLOAD2 represents the load capacitance on the 3.3 V supply. The
nominal operating currents of each load are represented by the IL1 and IL2 blocks.
UDG01002
IL2
IMAX1
1
UP1
2
ENBL
3
IREF
4
CT
5
GND
6
UP2
7
IMAX2
8
VCC/CS1
16
DOWN1
15
GATE1
14
FAULT
13
CPUMP
12
GATE2
11
DOWN2
10
CS2
9
C2
0.1 F
TPS2306
D2
C1
0.1
F
D1
R1B
3.57 k
R1A
10 k
Q1
C3
0.01
F
Q2
R2A
10 k
R2B
12.1 k
3.3 V OUT
CLOAD2
LOAD 2
IL1
CLOAD1
LOAD 1
5V_OUT
VCC
R SNS1
0.04
CSS1
UP1
RIMAX1
365
R1
10 k
R IMAX2
274
CSS2
0.12
F
RSNS2 0.01
RUP2
1 k
CT 0.1 F
RREF 15 k
3.3V_IN
5V_IN
0.33
F
UP1
Figure 2. TPS2306 in a 5-V/3.3-V Dual Hot Swap Application
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