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| 型号： | PT6714C |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 14 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA17 |
| 封装： | SMD-17 |
| 文件页数： | 6/10页 |
| 文件大小： | 230K |
| 代理商： | PT6714C |
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com
PT6705/PT6715 Series
Adjusting the Output Voltage of the PT6705 and
PT6715 Excalibur Series of Regulators
Both the PT6705 and PT6715 series ISRs are non-
programmable versions of the PT6700 Excalibur
family of converters. The output voltage of these regula-
tors have a fixed output voltage, which may be adjusted
higher or lower than the factory pre-set voltage using a
single external resistor. Table 2-1 gives the adjustment
range for each model in the series as Va (min) and Va (max).
Adjust Up:
An increase in the output voltage is obtained by
adding a resistor R2, between pin 1 (Vo Adjust) and pin 7
(Remote Sense GND).
Adjust Down:
Add a resistor (R1), between pin 1 (Vo Adjust)
and pin 17 (Remote Sense Vout).
Refer to Figure 2-1 and Table 2-2 for both the placement and
value of the required resistor, either (R1) or R2 as appropriate.
Figure 2-1
Notes:
1. Use only a single 1% resistor in either the (R1) or R2
location. Place the resistor as close to the regulator as
possible.
2. Never connect capacitors from Vo Adjust to either GND,
Vout, or the Remote Sense pins. Adding capacitance to the
Vo Adjust pin will affect the stability of the ISR.
3. If the Remote Sense feature is not being used, pin 7 must
be connected to pin 8 for optimum output voltage accuracy.
Correspondingly the resistors (R1) and R2 may be then be
connected from Vo Adjust to either Vout or GND
respectively.
L
O
A
D
(R1)
Adj Down
R2
Adjust Up
C
out
+
C
in
+
COM
+5V
Vo
COM
PT6705/PT6715
Sns(+)
Sns(-)
V
out
G N D
Vo(adj)
V
in
Stby*
V
Bias
13 – 16
17
7
1
8 – 12
4,5,6
23
Bias
(Req'd for PT6705)
The values of (R
1) [adjust down], and R2 [adjust up], can
also be calculated using the following formulas.
Ro ( Va –Vr )
(R1)
=
Vo – Va
– Rs
k
Ro Vr
– Rs
k
R2
=
Va – Vo
Where: Vo = Original output voltage
Va = Adjusted output voltage
Vr = Reference voltage (Table 2-1)
Ro = Resistance constant (Table 2-1)
Rs = Internal series resistance (Table 2-1)
4. The PT6705 series requires a 12V external bias voltage in
order to operate (see data sheet). An external bias voltage is
not required for the PT6715 series.
5. Adjusting the output voltage of the PT6705 and PT6715
(3.3V output) higher than the factory pre-set voltage may
require an increase in the minimum input voltage. These
two models must comply with the following requirements
for Vin(min).
PT6705:
Vin(min)
= (Va + 1)V
PT6715:
Vin(min)
= (Va + 1)V or 4.5V, whichever is greater.
相关PDF资料 |
PDF描述 |
|---|---|
| PT6716A | 14 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA17 |
| PT6716C | 13 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA17 |
| PT6714A | 14 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA17 |
| PT6715N | SWITCHING REGULATOR, SMA23 |
| PT6715A | SWITCHING REGULATOR, SMA23 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PT6715 | 制造商:TI 制造商全称:Texas Instruments 功能描述:13 AMP PROGRAMMABLE INTEGRATED SWITCHING REGULATOR |
| PT6715A | 功能描述:DC/DC转换器 3.3Vout 13A 5V-Inp CU Case Adj ISR RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PT6715C | 功能描述:DC/DC转换器 3.3Vout 13A 5V-Inp CU Case Adj ISR RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PT6715N | 功能描述:DC/DC转换器 3.3Vout 13A 5V-Inp CU Case Adj ISR RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PT6716 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:2.5Vout 13 Amp 5V-Input Adjustable ISR. CU Case |
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