TPS54626 Datasheet, PDF (1/22 Pages) Texas Instruments – 4.5V to 18V Input, 6.5-A Synchronous Step-Down SWIFT Converter with ECO-Mode

TPS54626
www.ti.com
SLVSC34 – AUGUST 2013
4.5V to 18V Input, 6.5-A Synchronous Step-Down SWIFT™ Converter with ECO-Mode™
Check for Samples: TPS54626
FEATURES
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•23 D-CAP2™ Mode Enables Fast Transient
Response
• Low Output Ripple and Allows Ceramic Output
Capacitor
• Wide Vin Input Voltage Range: 4.5 V to 18 V
• Output Voltage Range: 0.76 V to 5.5 V
• Highly Efficient Integrated FET’s Optimized for
Lower Duty Cycle Applications –36 mΩ (High
Side) and 28 mΩ (Low Side)
• High Efficiency, less than 10 μA at shutdown
• High Initial Bandgap Reference Accuracy
• Adjustable Soft Start
• Pre-Biased Soft Start
• 650-kHz Switching Frequency (f_SW)
• Cycle By Cycle Over Current Limit
• Power Good Output
• Auto-Skip Eco-mode™ for High Efficiency at
Light Load
APPLICATIONS
• Wide Range of Applications for Low Voltage
System
– Digital TV Power Supply
– High Definition Blu-ray Disc™ Players
– Networking Home Terminal
– Digital Set Top Box (STB)
DESCRIPTION
The TPS54626 is an adaptive on-time D-CAP2™
mode synchronous Buck converter. The TPS54626
enables system designers to complete the suite of
various end equipment’s power bus regulators with a
cost effective, low component count, low standby
current solution. The main control loop for the
TPS54626 uses the D-CAP2™ mode control which
provides a very fast transient response with no
external components. The adoptive on-time control
supports seamless operation between PWM mode at
heavy load condition and reduced frequency
operation at light load for high efficiency. The
TPS54626 also has a proprietary circuit that enables
the device to adopt to both low equivalent series
resistance (ESR) output capacitors, such as SP-CAP
and ultra-low ESR ceramic capacitors. The device
operates from 4.5-V to 18-V VIN input power supply
voltage. The output voltage can be programmed
between 0.76 V and 5.5 V. The device also features
an adjustable soft start time and a power good
function. The TPS54626 is available in the 14 pin
HTSSOP package, designed to operate from –40℃
to 85℃.
Io = 50 mA – 6.5 A
S/R = 0.35 A/μs
Vo (50 mV/div)
Io (2 A/div)
U1
TPS54626PWP
Time (100 μs/div)
L004_SLVSC34
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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.
D-CAP2, Eco-mode are trademarks of Texas Instruments.
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Blu-ray Disc is a trademark of Blu-ray Disc Association.
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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 © 2013, Texas Instruments Incorporated