收藏本站
Application Notes
PT5400 Series
Adjusting the Output Voltage of the PT5400
Series of 6-A SWIFT ? Power Modules
The output voltage of the PT5400 series of SWIFT power
modules may be adjusted higher or lower than the factory
trimmed pre-set voltage with the addition of a single
external resistor. Table 4-1 gives the allowable adjustment
range for each model of the series as V a (min) and V a (max).
The values of (R 1 ) [adjust down], and R 2 [adjust up],
can either be calculated using the following formulas, or
may be looked up from the range of values in Table 4-2.
Refer to Figure 4-1 for the placement of the required
resistor; either (R 1 ) or R 2 as appropriate.
Adjust Up: An increase in the output voltage is obtained by
adding a resistor R 2 , between pin 5 (V o adj) and pin 3 (GND).
(R 1 )
=
R o (V a – 0.891)
V o – V a
– 18.2
k ?
Adjust Down:
pin 4 (V out ).
Add a resistor (R 1 ) , between pin 5 (V o adj) and
R 2
=
0.891 R o
V a – V o
– 18.2
k ?
Where:
V o = Original output voltage
V a
= Adjusted output voltage
Figure 4-1
Notes:
R o = The resistance value from Table 4-1
+ V IN
2
V in
PT5400
Vo
4
+ V O
1. Use a 1% (or better) tolerance resistor in either the (R 1 )
or R 2 location. Place the resistor as close to the ISR as
GND
3
V o(adj)
5
(R1)
possible.
2. Never connect capacitors from V o adj to either GND or
V out . Any capacitance added to the V o adjust pin will affect
C2
100 μ F
(Req'd)
COM
+
Adj Down
R2
Adjust Up
COM
the stability of the ISR.
3. For each model, adjustments to the output voltage may
place additional limits on the minimum input voltage. The
revised minimum input voltage must comply with the
following requirement.
V in (min) = (V a + 1.1) V or as specified in the data sheet,
whichever is greater.
4. The PT5408 operates only from a 3.3-V input bus.
The limited input to output voltage differential of this
model does not allow it to be adjusted higher than its
trimmed output voltage.
Table 4-1
ISR OUTPUT VOLTAGE ADJUSTMENT RANGE AND FORMULA PARAMETERS
Series Pt. No. PT5401 PT5402 PT5408 PT5403
PT5404
PT5405
PT5406
PT5407
Input Bus
Vo (nom)
Va (min)
Va (max)
Ro (k ? )
5V
3.3 V
2.9 V
3.5 V
10.2
5V
2.5 V
2.0 V
2.95 V
10.2
3.3 V 4
2.5 V
2.0 V
2.5 V 4
10.2
3.3/5 V
2V
1.65 V
2.45 V
10.0
3.3/5 V
1.8 V
1.5 V
2.25 V
10.0
3.3/5 V
1.5 V
1.3 V
1.95 V
10.2
3.3/5 V
1.2 V
1.1 V
1.65 V
9.76
3.3/5 V
1V
0.97 V
1.45 V
10.2
For technical support and further information, visit http://power.ti.com
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
PTB48560BAH CONV DC/DC 3.3V 8A HZ T/H 11DIP
PTH03000WAD MODULE PIP 3.3VIN 6A ADJ T/H
PTKM10-180SM TOROIDAL POWER CHOKE 10UH SMD
PV37W504C01B00 TRIMMER 500K OHM 0.25W TH
PVC6282 CAP FILM 8200PF 600VDC RADIAL
PVF2A504A11R00 TRIMMER 500K OHM 0.001W SMD
PVM-16V121MG70E-R2 CAP ALUM 120UF 16V 20% SMD
PWR1317AC CONV DC/DC +/-15V +/-50MA DIP
相关代理商/技术参数
PT5408 制造商:TI 制造商全称:Texas Instruments 功能描述:6-A 5-V/3.3-V Input Adjustable SWIFT Power Module
PT5408A 功能描述:DC/DC转换器 2.5V 6A 3.3V Input Adj SWIFT Module 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:
PT5408C 功能描述:DC/DC转换器 2.5V 6A 3.3V Input Adj SWIFT Module 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:
PT5408N 功能描述:DC/DC转换器 2.5V 6A 3.3V Input Adj SWIFT Module 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:
PT5410 制造商:Pulse Electronics Corporation 功能描述:- Bulk
PT5411 制造商:Pulse 功能描述:- Bulk
PT541-1 功能描述:固定电感器 MAGNETICS - ADSL RoHS:否 制造商:AVX 电感:10 uH 容差:20 % 最大直流电流:1 A 最大直流电阻:0.075 Ohms 工作温度范围:- 40 C to + 85 C 自谐振频率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接类型:SMD/SMT 封装 / 箱体:6.6 mm x 4.45 mm
PT541-1L 制造商:Bourns / JW Miller 功能描述:Telecom Transformer 2:1 1500Vrms 0.6Ohm Prim. DCR <1dB Through Hole 制造商:Bourns Inc 功能描述:TELC TX 2:1 1500VRMS 0.6OHM PRIM. DCR 1DB TH - Bulk 制造商:Bourns Inc 功能描述:Telecom Transformer 2:1 1500Vrms 0.6Ohm Prim. DCR <1dB Through Hole