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| 型号： | PTV12020WAH |
| 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： | SIP-12 |
| 文件页数： | 4/22页 |
| 文件大小： | 414K |
| 代理商： | PTV12020WAH |
www.ti.com
Designing for Fast Load Transients
Features of the PTH Family of Non-Isolated Wide Output Adjust Power Modules
Introduction
SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007
The transient response of the dc/dc converter has been characterized using a load transient with a di/dt of 1
A/s. The typical voltage deviation for this load transient is given in the data sheet specification table using the
optional value of output capacitance. As the di/dt of a transient is increased, the response of a converter
regulation circuit ultimately depends on its output capacitor decoupling network. This is an inherent limitation
with any dc/dc converter once the speed of the transient exceeds its bandwidth capability. If the target
application specifies a higher di/dt or lower voltage deviation, the requirement can only be met with additional
output capacitor decoupling. In these cases special attention must be paid to the type, value and ESR of the
capacitors selected.
If the transient performance requirements exceed that specified in the data sheet, or the total amount of load
capacitance is above 3,000 F, the selection of output capacitors becomes more important.
The PTH/PTV family of non-isolated, wide-output adjustable power modules are optimized for applications that
require a flexible, high performance module that is small in size. Each of these products are POLA compatible.
POLA-compatible products are produced by a number of manufacturers, and offer customers advanced,
nonisolated modules with the same footprint and form factor. POLA parts are also ensured to be interoperable,
thereby, providing customers with second-source availability.
From the basic, Just Plug it In functionality of the 6-A modules, to the 30-A rated feature-rich PTHxx030, these
products were designed to be very flexible, yet simple to use. The features vary with each product. Table 5
provides a quick reference to the features by product series and input bus voltage.
Table 5. Operating Features by Series and Input Bus Voltage
Series
Input Bus (V)
IO (A)
Adjust
On/Off
Over-
Prebias
Auto-
Margin
Output
Thermal
(Trim)
Inhibit
Current
Startup
Track
Up/Down
Sense
Shutdown
3.3
6
PTHxx050
5
6
12
6
3.3 / 5
10
PTHxx060
12
8
3.3 / 5
15
PTHxx010
12
5
8
PTVxx010
12
8
3.3 / 5
22
PTHxx020
12
18
5
18
PTVxx020
12
16
3.3 / 5
30
PTHxx030
12
26
For simple point-of-use applications, the PTH12050 (6A) provides operating features such as an on/off inhibit,
output voltage trim, prebias start-up and overcurrent protection. The PTH12060 (10A), and PTH12010 (12A)
include an output voltage sense, and margin up/down controls. Then the higher output current, PTH12020 (18A)
and PTH12030 (26A) products incorporate overtemperature shutdown protection.
The PTV12010 and PTV12020 are similar parts offered in a vertical, single in-line pin (SIP) profile, at slightly
lower current ratings.
All of the products referenced in Table 5 include Auto-Track. This feature was specifically designed to simplify
the task of sequencing the supply voltages in a power system. This and other features are described in the
following sections.
12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PTV12020WAH | 制造商:Texas Instruments 功能描述:REG SW 1.2-5.5V 16A VRT TH 12SIP |
| PTV12B-E3/84A | 功能描述:稳压二极管 12 Volt 1.5 Watt RoHS:否 制造商:Vishay Semiconductors 齐纳电压:12 V 电压容差:5 % 电压温度系数:0.075 % / K 齐纳电流: 功率耗散:3 W 最大反向漏泄电流:3 uA 最大齐纳阻抗:7 Ohms 最大工作温度:+ 150 C 安装风格:SMD/SMT 封装 / 箱体:DO-214AC 封装:Reel |
| PTV12B-E3/85A | 功能描述:稳压二极管 12 Volt 1.5 Watt RoHS:否 制造商:Vishay Semiconductors 齐纳电压:12 V 电压容差:5 % 电压温度系数:0.075 % / K 齐纳电流: 功率耗散:3 W 最大反向漏泄电流:3 uA 最大齐纳阻抗:7 Ohms 最大工作温度:+ 150 C 安装风格:SMD/SMT 封装 / 箱体:DO-214AC 封装:Reel |
| PTV12B-M3/84A | 功能描述:稳压二极管 1.5watt 12volt RoHS:否 制造商:Vishay Semiconductors 齐纳电压:12 V 电压容差:5 % 电压温度系数:0.075 % / K 齐纳电流: 功率耗散:3 W 最大反向漏泄电流:3 uA 最大齐纳阻抗:7 Ohms 最大工作温度:+ 150 C 安装风格:SMD/SMT 封装 / 箱体:DO-214AC 封装:Reel |
| PTV12B-M3/85A | 功能描述:稳压二极管 1.5watt 12volt RoHS:否 制造商:Vishay Semiconductors 齐纳电压:12 V 电压容差:5 % 电压温度系数:0.075 % / K 齐纳电流: 功率耗散:3 W 最大反向漏泄电流:3 uA 最大齐纳阻抗:7 Ohms 最大工作温度:+ 150 C 安装风格:SMD/SMT 封装 / 箱体:DO-214AC 封装:Reel |
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