TPS5300 Datasheet, PDF (1/21 Pages) Texas Instruments – MOBILE CPU POWER SUPPLY CONTROLLER

TPS5300
8,1 mm x 11 mm
SLVS334A – DECEMBER 2000 – REVISED SEPTEMBER 2001
MOBILE CPU POWER SUPPLY CONTROLLER
FEATURES
D Power Stage Input Voltage Range of 3 V to
28 V
D Single-Chip Dynamic Output Voltage
Transition Solution
D Hysteretic Controller Provides Fast Transient
Response Time and Reduced Output
Capacitance
D Two Linear Regulator Controllers Regulating
Clock and I/O Voltages
D Internal 2-A (Typ) Gate Drivers With Bootstrap
Diode For Increased Efficiency
D 5-Bit Dynamic VID
D Active Droop Compensation Enables Tight
Dynamic Regulation for Reduced Output
Capacitance
D VGATE Terminal Provides Power-Good Signal
for All Three Outputs
D Enable External Terminal (ENABLE_EXT)
D 32-Pin TSSOP PowerPAD Enhances Thermal
Performance
D 1% Reference Voltage Accuracy
technology. The TPS5300 provides a precise,
programmable supply voltage to a mobile processor or
other processor power applications. A ripple regulator
provides the core voltage, while two linear regulator
drivers regulate external NPN power transistors for the
I/O and CLK voltages. A 5-bit voltage identification
(VID) DAC allows programming for the ripple regulator
voltage to values between 0.925 V to 1.275 V in 25-mV
steps and 1.3 V to 2 V in 50-mV steps. Other voltage
ranges and steps can be easily set. The fast transient
response time and active voltage DROOP positioning
reduce the number of output capacitors required to
keep the output voltage within tight dynamic voltage
regulation limits. The power saving mode (PSM) allows
the user to select a single operating ramp or allows the
controller to automatically switch to lower frequencies
at low loads. The high-gain current sense differential
amplifier allows the use of small-value sense resistors
that minimize conduction losses.
VI = 12 V
APPLICATIONS
D Intel Mobile CPUs With SpeedStep
Technology
D AMD Mobile CPUs With PowerNow!
Technology
D DSP Processors
D Other One, Two, or Three Output
Point-of-Load Applications
DESCRIPTION
The TPS5300 is a hysteretic synchronous-buck
controller, with two on-chip linear regulator controllers,
incorporating dynamic output voltage positioning
Output Voltage Transient Load Response
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.
Speed Step is a trademark of Intel Corp.
PowerNow is a trademark of Advanced Micro Devices Inc.
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright  2001, Texas Instruments Incorporated
www.ti.com
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