參數(shù)資料
型號(hào)： PTN78060WAZ
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源模塊
英文描述： 1-OUTPUT 45 W DC-DC REG PWR SUPPLY MODULE
封裝： ROHS COMPLIANT, DIP-7
文件頁數(shù)： 2/28頁
文件大?。?/td> 1948K
代理商： PTN78060WAZ
www.ti.com
APPLICATION INFORMATION
Adjusting the Output Voltage of the PTN78060 Wide-Output Adjust Power Modules
General
R
= 54.9 k
SET
W
1.25 V
V
- V
O
min
- R
P
(1)
Input Voltage Considerations
PTN78060W, PTN78060H
SLTS229A – NOVEMBER 2004 – REVISED APRIL 2005
A resistor must be connected between the VO Adjust control (pin 4) and GND (pin 1) to set the output voltage.
The adjustment range is from 2.5 V to 12.6 V for PTN78060W. The adjustment range is from 11.85 V to 22 V for
PTN78060H. If pin 4 is left open, the output voltage defaults to the lowest value.
Table 2 gives the standard resistor value for a number of common voltages, and with the actual output voltage
that the value produces. For other output voltages, the resistor value can either be calculated using Equation 1
and the constants for the applicable product in Table 1. Alternatilvey, RSET can be simply selected from the range
of values given in Table 3 and Table 4. Figure 27 shows the placement of the required resistor.
Table 1. RSET Formula Constants
PRODUCT
VMIN
RP
PTN780x0W
2.5 V
6.49 k
PTN780x0H
11.824 V
6.65 k
The PTN78060 is a step-down switching regulator. In order that the output remains in regulation, the input
voltage must exceed the output by a minimum differential voltage.
Another consideration is the pulse width modulation (PWM) range of the regulator's internal control circuit. For
stable operation, its operating duty cycle should not be lower than some minimum percentage. This defines the
maximum advisable ratio between the regulator input and output voltage magnitudes.
For satisfactory performance, the operating input voltage range of the PTN78060x must adhere to the following
requirements.
1. For PTN78060W output voltages lower than 10 V, the minimum input voltage is (VO+ 2 V ) or 7 V, whichever
is higher.
2. For PTN78060W output voltages equal to 10 V and higher, the minimum input voltage is (VO+ 2.5 V ).
3. The maximum input voltage for PTN78060W is (10
× V
O ) or 36 V, whichever is less.
4. For PTN78060H output voltages lower than 19 V, the minimum input voltage is (VO + 3 V) or 15 V, whichever
is higher.
5. For PTN78060H output voltages equal to 19 V and higher, the minimum input voltage is (VO+ 4 V ) .
As an example, Table 2 gives the operating input voltage range for the common output bus voltages. In addition,
the Electrical Characteristics table defines the available output voltage adjust range for various input voltages.
Table 2. Standard Values of Rset for Common Output Voltages
VO
RSET
VO
Operating
PRODUCT
(Required)
(Standard Value)
(Actual)
VI Range
2.5 V
Open
2.5 V
7 V to 25 V
3.3 V
78.7 k
3.306 V
7 V to 33 V
PTN780x0W
5 V
21 k
4.996 V
7 V to 36 V
12 V
732
12.002 V
14.5 V to 36 V
12 V
383 k
12.000 V
15 V to 36 V
15 V
15 k
14.994 V
18 V to 36 V
PTN780x0H
18 V
4.42 k
18.023 V
21 V to 36 V
22 V
95.3
21.998 V
26 V to 36 V
10
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PTN78060WAZT 功能描述:DC/DC轉(zhuǎn)換器 3-A Wide-Input Adj Swtch Reg Mod 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:
PTN780X0H 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-A, WIDE-INPUT ADJUSTABLE SWITCHING REGULATOR
PTN780X0W 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-A, WIDE-INPUT ADJUSTABLE SWITCHING REGULATOR
PTNC04 制造商:Honeywell Sensing and Control 功能描述:
PTNETD5800GDL200 制造商:Texas Instruments 功能描述:
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