器件名称: TPS54872PWP
功能描述: 8-A OUTPUT 4-V TO 6-V INPUT TRACKING /TERMINATION SYNCHRONOUS PWM SWITCHER WITH INTEGRATED FETS
文件大小: 267.12KB 共17页
简 介:6,4 mm x 9,7 mm www.ti.com
TPS54872
SLVS436C JULY 2002 REVISED FEBRUARY 2005
8A OUTPUT, 4V TO 6V INPUT TRACKING/TERMINATION SYNCHRONOUS PWM SWITCHER WITH INTEGRATED FETs (SWIFT)
FEATURES D Tracks Externally Applied Reference Voltage D 30-m MOSFET Switches for High Efficiency D D D D
at 8-A Continuous Output Source or Sink Current 6% to 90% VI Output Tracking Range Wide PWM Frequency: Fixed 350 kHz or Adjustable 280 kHz to 700 kHz Load Protected by Peak Current Limit and Thermal Shutdown Integrated Solution Reduces Board Area and Total Cost
DESCRIPTION
As a member of the SWIFT family of dc/dc regulators, the TPS54872 low-input voltage high-output current synchronous-buck PWM converter integrates all required active components. Included on the substrate with the listed features are a true, high performance, voltage error amplifier that enables maximum performance under transient conditions and flexibility in choosing the output filter L and C components; an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 3.8 V; an internally set slow-start circuit to limit in-rush currents; and a status output to indicate valid operating conditions. The TPS54872 is available in a thermally enhanced 28-pin TSSOP (PWP) PowerPAD package, which eliminates bulky heatsinks. TI provides evaluation modules and the SWIFT designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.
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