PTH08T250W Datasheet, PDF (1/38 Pages) Texas Instruments – 50-A, 4.5-V to 14-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TurboTrans™

PTH08T250W
www.ti.com
SLTS278B – JUNE 2007 – REVISED AUGUST 2007
50-A, 4.5-V to 14-V INPUT, NON-ISOLATED,
WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TurboTrans™
FEATURES
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•2 Up to 50-A Output Current
• 4.5-V to 14-V Input Voltage
• Wide-Output Voltage Adjust (0.7 V to 3.6 V)
• ±1.5% Total Output Voltage Variation
• Efficiencies up to 96%
• Output Overcurrent Protection
(Nonlatching, Auto-Reset)
• Operating Temperature: –40°C to 85°C
• Safety Agency Approvals: (Pending)
– UL/IEC/CSA-C22.2 60950-1
• Prebias Startup
• On/Off Inhibit
• Differential Output Voltage Remote Sense
• Adjustable Undervoltage Lockout
• Auto-Track™ Sequencing
• Multi-Phase, Switch-Mode Topology
• TurboTrans™ Technology
• Designed to meet Ultra-Fast Transient
Requirements up to 300 A/μs
• SmartSync Technology
• Parallel Operation
APPLICATIONS
• Complex Multi-Voltage Systems
• Servers
• Workstations
DESCRIPTION
The PTH08T250W is a high-performance 50-A rated, non-isolated power module. This module represents the
2nd generation of the popular PTH series power modules with a reduced footprint and improved features.
Operating from an input voltage range of 4.5 V to 14 V, the PTH08T250W requires a single resistor to set the
output voltage to any value over the range, 0.7 V to 3.6 V. The wide input voltage range makes the
PTH08T250W particularly suitable for advanced computing and server applications that utilize a loosely
regulated 8-V to 12-V intermediate distribution bus. Additionally, the wide input voltage range increases design
flexibility by supporting operation with tightly regulated 5-V, 8-V, or 12-V intermediate bus architectures.
The module incorporates a comprehensive list of features. Output overcurrent and over-temperature shutdown
protects against most load faults. A differential remote sense ensures tight load regulation. An adjustable
under-voltage lockout allows the turn-on voltage threshold to be customized. Auto-Track™ sequencing is a
popular feature that greatly simplifies the simultaneous power-up and power-down of multiple modules in a
power system. Additionally, the capability to current share between multiple PTH08T250W modules allows for
load currents greater than 50A on a single rail.
The PTH08T250W includes new patent pending technologies, TurboTrans™ and SmartSync. The TurboTrans
feature optimizes the transient response of the regulator while simultaneously reducing the quantity of external
output capacitors required to meet a target voltage deviation specification. Additionally, for a target output
capacitor bank, TurboTrans can be used to significantly improve the regulators transient response by reducing
the peak voltage deviation. SmartSync allows for switching frequency synchronization of multiple modules, thus
simplifying EMI noise suppression tasks and reducing input capacitor RMS current requirements.
The module uses double-sided surface mount construction to provide a low profile and compact footprint.
Package options include both through-hole and surface mount configurations that are lead (Pb) - free and RoHS
compatible.
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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.
TurboTrans, Auto-Track, TMS320 are trademarks of Texas Instruments.
2
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 © 2007, Texas Instruments Incorporated