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参数资料
| 型号： | PTB78560BAZ |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, DIP11 |
| 文件页数： | 1/27页 |
| 文件大小： | 643K |
| 代理商： | PTB78560BAZ |
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www.ti.com
FEATURES
APPLICATIONS
DESCRIPTION
SLTS249 – JUNE 2005
30-W, 24-V/48-V INPUT DC/DC CONVERTERS
WITH AUTO-TRACK SEQUENCING
Intermediate Bus Architectures
Input Voltage: 18 V to 60 V
Telecom, High-End Computing Platforms
30-W Total Output Power
Multi-Rail Power Systems with
Output Voltages: 3.3 V, 5 V, and 12 V
Power-Up Sequencing
Wide-Output Adjust/Trim
Up To 88% Efficiency
Overcurrent Protection
Overtemperature Shutdown
Undervoltage Lockout
Input Overvoltage Protection
Auto-Track Power-Up Sequencing
(Includes Sequenced Output with PTB78560B)
Smart-Sense Remote Sensing (PTB78560B)
Dual-Logic Enable Control
Space-Saving 1×2 Footprint
Surface Mount Package
Lead (Pb) - Free Option Available
1500-Vdc Isolation
Agency Approvals (Pending):
UL/cUL 60950, EN 60950
The PTB78560x is a series of 30–W rated isolated dc/dc converters, designed to operate from a standard 24–V
or 48–V telecom central office (CO) supply. Housed in a 1×2 package, each model has a wide-adjust output
voltage that can be set to one of the common intermediate bus voltages of 3.3 V, 5 V, or 12 V.
The PTB78560 series incorporates Auto-Track, a feature that simplifies the power-up sequencing of multiple
power modules that operate from the same intermediate bus. During a power-up cycle, modules with this feature
have the capability of following a common ramp voltage applied to an input called Track. The PTB78560 series
is specifically designed to control the Track voltage of any number of nonisolated downstream modules powered
from its output. This ensures that the outputs of the downstream modules all rise simultaneously during power
up. The PTB78560B (3.3 V) has an additional sequenced output, VO Seq, which also rises with the Track
voltage. This allows the VO Seq output to power up simultaneously with the outputs from other power modules
under the control of Auto-Track.
Whether used to facilitate power-up sequencing, or operated as a stand-alone module, the PTB78560 series
includes many other features expected of high-performance dc/dc converter modules. Precise output voltage
regulation is ensured with a differential remote sense. Operational features include an input undervoltage lockout
(UVLO) and a dual-logic output enable control. Overcurrent and overtemperature protection ensure survival
against load faults.
Typical applications include distributed power architectures in both telecom and computing environments,
particularly complex digital systems requiring power sequencing of multiple power supply rails.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Auto-Track is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2005, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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