參數(shù)資料
型號(hào)： T520X477M006SE018
廠商： Texas Instruments, Inc.
英文描述： 60-A, 3.3/5-V INPUT, NONISOLATED WIDE-OUTPUT ADJUST POWER MODULE
中文描述： 60甲，3.3/5-V輸入，非隔離寬輸出調(diào)節(jié)電源模塊
文件頁(yè)數(shù)： 18/24頁(yè)
文件大?。?/td> 947K
代理商： T520X477M006SE018
www.ti.com
+
+
U1
U2
PTH05T210W
2, 6
5, 9
3, 4
7, 8
10
11
14
13
1INH/UVLO
GND
GND
Track
TT
12
+
+
PTH04040W
2
4
6
12
15
9
1
3
5
10 13 16
11
14
19
20
18
VI
7
8UVLO Prog
Inhibit
GND
GND
Margin
Up
Margin
Down
Track
17
+5 V
GND
SENSE
MR
CT
RESET
6
5
3
4
1
2
TPS3808G50
C3
4700 pF
U3
+Sense
V
O
Sense
V
O
Adj
R
1.62 k
C
O1
V
O1
= 3.3 V
C
I1
V
I
R
TRK#
50
R
= 100
/N
N = Number of track pins connected together
V
CC
C4
0.1
μ
F
C
O2
C
I2
V
O2
= 1.8 V
+Sense
V
O
Sense
V
I
V
O
Adj
R
5.49 k
PTH04040W
SLTS238A–SEPTEMBER 2005–REVISED FEBRUARY 2006
NOTES ON USE OF Auto-Track
1. The
Track
pin voltage must be allowed to rise above the module’s set-point voltage before the module can
regulate at its adjusted set-point voltage.
2. The Auto-Track function tracks almost any voltage ramp during power up, and is compatible with ramp
speeds of up to 1 V/ms.
3. The absloute maximum voltage that may be applied to the
Track
pin is V
I
.
4. The module does not follow a voltage at its
Track
input until it has completed its soft-start initialization. This
takes at least 10 ms from the time that the module has sensed that a valid voltage is present. During this
period, the
Track
input should be held at ground potential.
5. The module is capable of both sinking and sourcing current when following a voltage at its
Track
input.
Therefore startup into an output prebias is not supported when the module is under Auto-Track control.
Prebias holdoff is not necessary when all supply voltages simultaneously under the control of Auto-Track.
6. The Auto-Track function can be disabled by connecting the
Track
pin to the input voltage (V
). With
Auto-Track disabled, the output voltage rises at a quicker and more linear rate after input power is applied.
Figure 15. Sequenced Power Up and Power Down using Auto-Track
18
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