PTMA403033 Datasheet, PDF (1/33 Pages) Texas Instruments – 10-W, 36-V to 75-V INPUT, 1500-V ISOLATION, DC/DC CONVERTERS

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PTMA403033
PTMA402050
PTMA401120
SLTS259A – FEBRUARY 2006 – REVISED MARCH 2006
10-W, 36-V to 75-V INPUT, 1500-V ISOLATION, DC/DC CONVERTERS
FEATURES
• Input Voltage: 36 V to 75 V
• 10-W Total Output Power
• Output Voltages: 3.3 V, 5 V, and 12 V
• Output Voltage Trim ±10%
• Up To 87% Efficiency
• Overcurrent Protection
• Input Undervoltage Lockout
• Output Overvoltage Protection
• Positive or Negative Logic Enable Control
Option
• Synchronization Option
• Space-Saving Footprint (1.1 X 1.0 inch)
• Industry Standard Pinout
• Surface Mount Package
• 1500-Vdc Isolation
• Agency Approvals:
UL/cUL 60950, EN 60950
APPLICATIONS
• Intermediate Bus Architectures
• Telecom, High-End Computing Platforms
• Power Over Ethernet Applications
• Multi-Rail Power Systems
DESCRIPTION
The PTMA40XX is a series of 10-W rated isolated dc/dc converters, designed to operate from a standard -48-V
telecom central office supply. Housed in an industry standard 1.1 in. × 1.0 in. package, this series of isolated
modules is set to one of the common intermediate bus voltages of 3.3 V, 5 V, or 12 V.
The PTMA40XX series includes many features expected of high-performance dc/dc converter modules.
Operational features include an input undervoltage lockout (UVLO) and a dual-logic output enable control or
sychronization option. Overcurrent protection ensures survival against load faults.
Typical applications include distributed power architectures in both telecom and computing environments, power
over ethernet, and particularly complex digital systems requiring multiple power supply rails.
TYPICAL APPLICATION
C_I
47 µF
(optional)
1 V_I+
V_O+ ⁴
PTMA40XXXX
2 V_I−
Trim 5
3 Enable/Sync
V_{O− 6}
R_TRIM(down)
(optional)
R_TRIM(up)
(optional)
C_O
47 µF
(optional)
UDG−06003
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006, Texas Instruments Incorporated