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參數(shù)資料
| 型號(hào)： | PTH08000WAS1 |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 抗輻射高效，5安培開關(guān)穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 14/20頁(yè) |
| 文件大小： | 1402K |
| 代理商： | PTH08000WAS1 |
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www.ti.com
Auto-Track Function
The Auto-Track function is unique to the PTH/PTV family, and is available with all POLA products. Auto-Track
was designed to simplify the amount of circuitry required to make the output voltage from each module power up
and power down in sequence. The sequencing of two or more supply voltages during power up is a common
requirement for complex mixed-signal applications that use dual-voltage VLSI ICs such as the TMS320 DSP
family, microprocessors, and ASICs.
How Auto-Track Works
Auto-Track works by forcing the module output voltage to follow a voltage presented at the
Track
control pin
(1)
.
This control range is limited to between 0 V and the module set-point voltage. Once the track-pin voltage is
raised above the set-point voltage, the module output remains at its set-point
(2)
. As an example, if the
Track
pin
of a 2.5-V regulator is at 1 V, the regulated output is 1 V. If the voltage at the
Track
pin rises to 3 V, the regulated
output does not go higher than 2.5 V.
U
1
C
6
+
+
U
2
GND
RESIN
CT
REF
8
U3*
TL7712A
7
2
3
6
1
5
4
C
3.3 F
T
m
C
0.1 F
REF
m
R
10k
RST
W
C
2
1
5
6
4
GND
Inhibit
2
1
5
6
4
GND
Inhibit
2
C
5
C
1
3
3
12V
Track
Track
*UseTPS3808G50with5-Vinputbusmodules.
1.89k
W
3.75k
W
V
I
V
I
V
O
V
O
PTH08000W
PTH08000W
V 1=3.3V
O
V 2=2.5V
O
V Adj
O
V Adj
O
SENSE
RESET
RESET
V
CC
PTH08000W
SLTS248–JUNE 2005
When under Auto-Track control, the regulated output from the module follows the voltage at its
Track
pin on a
volt-for-volt basis. By connecting the
Track
pin of a number of these modules together, the output voltages follow
a common signal during power up and power down. The control signal can be an externally generated master
ramp waveform, or the output voltage from another power supply circuit
(3)
. For convenience, the
Track
input
incorporates an internal RC-charge circuit. This operates off the module input voltage to produce a suitable rising
waveform at power up.
Figure 14. Auto-Track Circuit
14
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PTH08000WAS2 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.25-A, WIDE INPUT, ADJUSTABLE SWITCHING REGULATOR |
| PTH08000WAST | 功能描述:DC/DC轉(zhuǎn)換器 2.25A 5/12V Input WideAdj Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| PTH08000WAZ | 功能描述:DC/DC轉(zhuǎn)換器 2.25A 5/12V Input WideAdj Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| PTH08000WAZ1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.25-A, WIDE INPUT, ADJUSTABLE SWITCHING REGULATOR |
| PTH08000WAZ2 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.25-A, WIDE INPUT, ADJUSTABLE SWITCHING REGULATOR |
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