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参数资料
| 型号： | PTB78520WAS |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封装： | DIP-10 |
| 文件页数： | 1/15页 |
| 文件大小： | 443K |
| 代理商： | PTB78520WAS |
For technical support and further information visit http://power.ti.com
PTB78520W
20-A, 18–60-V Input Auto-Track
Compatible Isolated DC/DC Converter
Typical Application
Features
Wide-Input Voltage Range:
18 V to 60 V
20 A Total Output Current
90% Efficiency
Wide-Adjust Output Voltage:
1.8 V to 3.6 V
Over-Current Protection
Output Over-Voltage Protection
Over-Temperature Shutdown
Output Enable Control
Description
The PTB78520W is a 20-A rated,
wide-input (18-60 V) isolated DC/DC
converter that incorporates Auto-Track
power-up sequencing. This allows these
modules to simultaneously power up with
any other downstream non-isolated, Auto-
Track compliant module.
The PTB78520W module provides
two outputs, each regulated to the same
voltage. During power up, the voltage at
‘VO Bus’ rises first, allowing this output
to provide input power to any downstream
non-isolated module. The voltage from
‘VO Seq’ is then allowed to rise simulta-
neously, under the control of Auto-Track,
along with the outputs from the down-
stream modules.
Whether used to facilitate power-up
sequencing, or operated as a stand-alone
module, the PTB78520W includes many
features expected of high-performance
DC/DC converter modules. The combi-
Pin-Out Information
Pin Function
1+V
IN
2V
O Enable *
3–V
IN
4
Track
5V
O Com
6
(–) Sense
7
Vo Adjust
8
(+) Sense
9V
O Bus
10
V
O Seq
Shaded functions indicate signals
electrically common with the input.
* Denotes negative logic:
Low (–VIN) = Normal operation
Open = Output off
Auto-Track Compatible
Sequenced Output
Smart-Sense Remote Sensing
Under-voltage Lockout
Industry Standard Footprint
Surface Mountable
1500 VDC Isolation
Agency Approvals (Pending):
UL/cUL 60950, EN 60950
nation of input-output isolation and a
wide-input voltage range, allows operation
from either +24 V or –48 V. The wide-
output adjust enables the output voltage
to be set to to any voltage over the range,
1.8 V to 3.6 V, using a single external
resistor. Precise output voltage regula-
tion is assured using Smart-Sense. This
is a differential remote sense that will
intelligently regulate the sequenced out-
put, depending on its sequence status.
Other operational features include an
input under-voltage lockout (UVLO) and
an output enable control. Over-current,
over-voltage, and over-temperature pro-
tection assures the module’s ability to
survive any load fault.
Typical applications include distributed
power architectures in both telecom and
computing environments, particularly
complex digital systems requiring power-
sequencing of multiple power supply rails.
Auto-T
rack
Sequencing
RSET
887
C2
100 F
R1
5.49 k
C1
100 F
V1 =3.3 V
V2 =1.8 V
+VI
–VI
V1
V2
Simultaneous Powerup
PTB78520W
VO Bus
VO Seq
+VI
–VI
+Sense
VO Adjust
–Sense
VO COM
VO Enable
Track
1
2
3
4
8
10
9
7
6
5
PTH03050W
15
6
3
4
2
Track
VO
GND
Inhibit
Adjust
VI
SLTS226A – JULY 2004 – REVISED OCTOBER 2005
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PTB78560A | 制造商:TI 制造商全称:Texas Instruments 功能描述:30-W, 24-V/48-V INPUT DC/DC CONVERTERS WITH AUTO-TRACK SEQUENCING |
| PTB78560AAH | 功能描述:DC/DC转换器 30-W 24-V/48V Input 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: |
| PTB78560AAS | 功能描述:DC/DC转换器 30-W 24-V/48V Input 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: |
| PTB78560AAZ | 功能描述:DC/DC转换器 30-W 24-V/48V Input 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: |
| PTB78560BAH | 功能描述:DC/DC转换器 30-W 24-V/48V Input 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: |
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