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參數(shù)資料
| 型號： | PT6367N |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 11 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA18 |
| 封裝： | SIP-12 |
| 文件頁數(shù)： | 12/14頁 |
| 文件大小： | 320K |
| 代理商： | PT6367N |
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com
PT6360 Series
Adjusting the Output Voltage of the PT6360 Series
of Integrated Switching Regulators
The output voltage of the PT6360 series of power modules
may be adjusted higher or lower than the pre-set voltage
with the addition of a single external resistor. Table 3-1
gives the allowable adjustment range for each model of the
series as Va (min) and Va (max). The value of the external
resistor can either be calculated using the formulas given
below, or simply selected from the range of values given
in Table 3-2. Refer to Figure 3-1 for the placement of
the required resistor. Use the resistor R1 to adjust up,
and the resistor (R2) to down.
Adjust Up:
An increase in the output voltage is obtained
by adding a resistor R2, between Vo adjust (pin 12) and
GND (pins 5-8).
Adjust Down:
Add a resistor (R1), between Vo adjust (pin 12)
and (+)Sense (pin 11).
Figure 3-1
The values of (R
1) [adjust down], and R2 [adjust up],
can be calculated using the following formulas. Refer to
Figure 3-1 for the placement of the required resistor;
either (R
1) or R2 as appropriate.
(R1)
=
Ro (Va – 0.8)
– Rs
k
Vo – Va
R2
=
0.8 Ro
– Rs
k
Va – Vo
Where:
Vo = Original output voltage
Va = Adjusted output voltage
Ro = The resistance value from Table 3-1
Rs = The series resistance from Table 3-1
R
2
Adjust Up
C
IN
560 F
(Req'd)
+V
O
COM
+V
IN
+
(R
1)
Adj Down
PT6360
2–4
5–812
9–10
Vin
Vo
Vo(adj)
GND
1
Inh
C
OUT
330 F
(Optional)
(+)Sense
11
Notes:
1. Use a 1% (or better) tolerance resistor in either the (R1)
or R2 location. Place the resistor as close to the ISR as
possible.
2. Never connect capacitors from Vo Adjust to either GND or
Vout. Any capacitance added to the Vo Adjust pin will affect
the stability of the ISR.
3. If the remote sense feature is not being used, the adjust
resistor (R1) can also be connected to Vout, (pins 9–10)
instead of (+)Sense.
Table 3-1
ISR OUTPUT VOLTAGE ADJUSTMENT RANGE AND FORMULA PARAMETERS
Series Pt. No.
PT6361
PT6362
PT6363
PT6364
PT6365
PT6366
PT6367
Vo (nom)
5.0 V
3.3 V
2.5 V
1.8 V
1.5 V
1.2 V
1.0 V
Va (min)
3.35 V
2.6 V
2.0 V
1.52 V
1.31 V
1.1 V
0.95 V
Va (max)
5.5 V
3.63 V
2.8 V
2.1 V
1.82 V
1.52 V
1.32 V
Ro (k
)
10.0
10.2
10.7
10.2
9.76
10.0
10.2
Rs (k
)
15.0
24.9
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| PT6366N | 11 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA18 |
| PT6366A | 11 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA18 |
| PT6365A | 11 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA18 |
| PT6363N | 11 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA18 |
| PT6365C | 11 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA18 |
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