收藏本站
PTB48560A, PTB48560B
PTB48560C
SLTS236A – MARCH 2005 – REVISED OCTOBER 2005
www.ti.com
Power-Up Sequencing With A V O SEQ Output (PTB48560B)
Figure 19 shows the PTB48560B converter (U1) providing two 3.3-V sources. This allows it to both power and
sequence with one or more downstream nonisolated modules. The example shows two 3.3-V input PTH03050W
modules (U2 and U3), each rated for up to 6 A of output current. The selection and current rating of the
nonisolated modules depends on the requirements of a specific application. The number of modules, their
respective output voltage, and load current rating combine with the load required at the V O Seq output. The total
must be supplied by the PTB48560B, and cannot exceed that available at the V O Bus output.
U1
5
Track
PTB48560B
V O SEQ (3.3 V)
+Sense
9
U2
2
+V I
1
+V I
V O Seq
V O Bus
11
10
3
V I
Track
PTH03050W
V O
6
V (POL) 1 (2.5 V)
2.21 k W
-V I
2
3
4
PEN
NEN
-V I
V O Adjust
V O COM
-Sense
8
6
7
C1
47 m F
R1
5.36 k W
Inhibit GND Adjust
4 1 5
R2
C2
100 m F
C3
100 m F
U3
2
Track
3
V I
PTH03050W
V O
6
V (POL) 2 (1.8 V)
Inhibit GND Adjust
4
1 5
C4
100 m F
R3
5.49 k W
C5
100 m F
Figure 19. Power-Up Sequencing With Nonisolated POL Modules
The output voltage adjust range of the PTB48560B is 1.8 V to 3.6 V. In these applications, the output voltage
must always be set to 3.3 V (R1 = 5.36 k ? ). This sets the output voltage of both the V O Bus and V O Seq outputs.
The output voltage of the 3.3-V input (nonisolated) modules, U2 and U3, can be set to any voltage over the
range, 0.8 V to 2.5 V. In this example, they are set to 2.5 V (R2 = 2.21 k ? ) and 1.8 V (R3 = 5.49 k ? ),
respectively. Figure 20 shows the power-up waveforms from Figure 19 when the Track input to all three modules
are simply connected together.
The converter provides input power to the downstream nonisolated modules via the V O Bus output. This output
rises first to allow the nonisolated modules to complete their power-up initialization. The V O Seq (3.3 V), V (POL) 1
(2.5 V) and V (POL) 2 (1.8 V), outputs supply the load circuit, and rise simultaneously when the converter removes
the internal ground signal to its own Track input. The V O Seq output rises with the outputs from the nonisolated
modules, until it reaches its set-point voltage.
18
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
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
PWR1726AC CONV DC/DC 1.5W UNREG DIP
相关代理商/技术参数
PTB48560BAS 功能描述:DC/DC转换器 30-W 1.8V to 3.6V Adj DC/DC Converter 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:
PTB48560BAZ 功能描述:DC/DC转换器 30-W 1.8V to 3.6V Adj DC/DC Converter 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:
PTB48560C 制造商:TI 制造商全称:Texas Instruments 功能描述:30-W, 48-V INPUT DC/DC CONVERTERS WITH AUTO-TRACK TM SEQUENCING
PTB48560CAH 功能描述:DC/DC转换器 30-W 9V to 13.2V Adj DC/DC Converter 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:
PTB48560CAS 功能描述:DC/DC转换器 30-W 9V to 13.2V Adj DC/DC Converter 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:
PTB48560CAZ 功能描述:DC/DC转换器 30-W 9V to 13.2V Adj DC/DC Converter 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:
PTB48580A 制造商:TI 制造商全称:Texas Instruments 功能描述:Dual Complementary-Output DC/DC Converter for DSL
PTB48580AAH 功能描述:DC/DC转换器 .+/-5V 30W Comp Out put DC/DC Converter 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: