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參數資料
| 型號： | PT4528 |
| 英文描述： | 60V Single N-Channel HEXFET Power MOSFET in a TO-220 FullPak (Iso) package; A IRFIZ34E with Standard Packaging |
| 中文描述： | 2.5V的5A條48V的輸入隔離DC - DC轉換器 |
| 文件頁數： | 5/8頁 |
| 文件大?。?/td> | 192K |
| 代理商： | PT4528 |
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com
Adjusting the Output Voltage of the PT4500/
PT4520 Series of Isolated DC/DC Converters
The factory pre-set output voltage of TI’s PT4500 and
PT4520 series of isolated DC/DC converters may be
adjusted within a nominal ±10% range. Adjustment is made
from the secondary side of the regulator
1
with a single
external resistor. For the input voltage range specified in
the data sheet Table 2-1 gives the allowable adjustment
range for each model, as V
o
(min) and V
o
(max).
Adjust Up:
An increase in the output voltage is obtained
by adding a resistor, R
2
between V
o
Adjust (pin 12), and
–V
out
(pin 7, 8).
Adjust Down:
Add a resistor
(R
1
)
, between V
o
Adjust (pin 12),
and +V
out
(pin 9, 10).
Refer to Figure 2-1 and Table 2-2 for both the placement
and value of the required resistor,
(R
1
)
or R
2
.
Notes:
1.
The PT4500 and PT4520 series of DC/DC converters
incorporate isolation between the ±V
in
and ±V
o
terminals. Adjustment of the output voltage is made
to the regulation circuit on the secondary or output
side of the converter.
2. The maximum rated output power for this series is
20W. An increase in the output voltage may therefore
require a corresponding reduction in the maximum
output current (
see Table 2-1
). The revised maximum
output current must be determined as follows.
=20 A,
or 5A, whichever is less.
V
a
Where V
a
is the adjusted ouput voltage.
3.
Use only a single 1% resistor in either the
(R
1
)
or R
2
location. Place the resistor as close to the module as
possible.
I
o
(max)
Table 2-1
DC/DC CONVERTER ADJUSTMENT RANGE AND FORMULA PARAMETERS
Series Pt #
48V Bus
PT4529
24V Bus
PT4509
Max Current
2
5A
V
o
(nom)
1.2
Va(min)
1.05
Va(max)
1.35
V
r
0.6125
K
o
(V·k
)
34.66
R
s
(k
)
150.0
PT4526
PT4506
5A
1.5
1.35
1.65
1.225
67.07
43.2
PT4527
PT4507
5A
1.8
1.62
1.98
1.225
69.7
110.0
PT4528
PT4508
5A
2.5
2.25
2.75
1.225
64.2
187.0
PT4521
PT4501
5A
3.3
2.95
3.65
1.225
69.3
187.0
PT4522
PT4502
4A
5.0
4.5
5.5
2.5
125.2
187.0
PT4523
PT4503
1.6A
12.0
10.8
13.2
2.5
139.8
110.0
PT4524
PT4504
1.3A
15.0
13.5
16.5
2.5
137.6
90.9
Figure 2-1
(R1)
Adj Down
R2
Adjust Up
+V
in
–
V
in
+V
o
–
V
o
PT4500/4520
+Vout
–
Vout
+Vin
–
Vin
Remote
On/Off
V
o
(adj)
1
2, 3
4, 5
9,10
7, 8
12
4. Never connect capacitors to V
o
adjust. Any
capacitance added to the V
o
adjust control pin will
affect the stability of the converter.
The values of
(R
1
)
[adjust down], and R
2
[adjust up], can
also be calculated using the following formulas.
(R
1
)
=
K
o
(V
a
– V
r
)
V
r
(V
o
– V
a
)
– R
s
k
R
2
=
K
o
(V
a
– V
o
)
– R
s
k
Where V
o
= Original output voltage
V
a
= Adjusted output voltage
V
r
= Reference voltage (Table 2-1)
K
o
= Multiplier constant (Table 2-1)
R
s
= Internal series resistance (Table 2-1)
PT4500/4520 Series
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PT4528A | 功能描述:CONV DC-DC 2.5V 5A 48VIN HORZ RoHS:是 類別:電源 - 板載 >> DC DC Converters 系列:PT4520 設計資源:Maxi/Mini/Micro Design Guide, Appl Manual 標準包裝:1 系列:Maxi 類型:隔離 輸出數:1 電壓 - 輸入（最?。?43V 電壓 - 輸入（最大）:110V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:* 電源（瓦） - 制造商系列:400W 電壓 - 隔離:* 特點:* 安裝類型:通孔 封裝/外殼:模塊 尺寸/尺寸:4.60" L x 2.20" W x 0.54" H（116.8mm x 55.9mm x 13.7mm） 包裝:散裝 工作溫度:-55°C ~ 100°C 效率:* 電源（瓦特）- 最大:* |
| PT4528C | 制造商:TI 制造商全稱:Texas Instruments 功能描述:20-W 48-V Input Isolated DC/DC Converter |
| PT4528N | 制造商:TI 制造商全稱:Texas Instruments 功能描述:20-W 48-V Input Isolated DC/DC Converter |
| PT4529 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:20-W 48-V Input Isolated DC/DC Converter |
| PT4529A | 功能描述:DC/DC轉換器 1.2V 5A 48-V Input Iso DC/DC Converter RoHS:否 制造商:Murata 產品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數量: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）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
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