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LM10520 データシート(PDF) 1 Page - Texas Instruments

部品番号 LM10520
部品情報  LM10520 Single-Phase Buck Controller for AVS Systems
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ホームページ  http://www.ti.com
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LM10520
www.ti.com
SNVS638 – NOVEMBER 2010
LM10520 Single-Phase Buck Controller for AVS Systems
Check for Samples: LM10520
1
FEATURES
DESCRIPTION
The LM10520 is a single-phase Energy Management
23
Typical Power Savings with AVS: 20 to 50%
Unit (EMU) that actively reduces system-level power
PWI 2.0 Interface
consumption by utilizing a continuous, real-time,
7-Bit AVS Control for One Output (Typical
closed-loop Adaptive Voltage Scaling (AVS) scheme.
Range of 0.6V to 1.2V)
The
AVS
technology
enables
optimum
energy
management delivery to the load in order to maximize
Precision Enable
system-level energy savings.
Integrated, Non-Overlapping NFET Drivers
The
LM10520
operates
cooperatively
with
Switching Frequency Over 50 kHz to 1MHz
PowerWise™ AVS-compatible ASICs, SoCs, and
Switching Frequency Synchronize Range from
processors to optimize supply voltages adaptively
250 kHz to 1MHz
over process and temperature variations. The device
is controlled via the high-speed serial PWI 2.0 open-
Startup into Pre-Biased Output
standard interface. It also supports Dynamic Voltage
Power Stage Input from 1V to 14V
Scaling (DVS) using frequency-voltage pairs from
Control stage Input from 3V to 6V
pre-characterized lookup tables.
Power Good Flag and Shutdown
The LM10520 features a fixed-frequency voltage-
Output Over-Voltage and Under-Voltage
mode PWM control architecture which is adjustable
Detection
from 50 kHz to 1MHz with one external resistor. In
addition, the LM10520 allows the switching frequency
Low-Side Adjustable Current Sensing
to be synchronized to an external clock signal over
Adjustable Soft Start
the range of 250 kHz to 1MHz. This wide range of
Tracking and Sequencing with Shutdown and
switching frequency gives the power supply designer
Soft-Start Pins
the flexibility to make better tradeoffs between
component size, cost and efficiency.
TSSOP-28 Package
Features include the ability to startup with a pre-
APPLICATIONS
biased load on the output, soft-start, input under-
voltage lockout (UVLO) and Power good (based on
AVS-Enabled FPGAs
both under-voltage and over-voltage detection). In
AVS-Enabled ASICs
addition,
the
soft-start
pin
can
be
used
for
implementing precise tracking, for the purpose of
sequencing with respect to an external rail.
1
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.
2
PowerWise is a trademark of Texas Instruments.
3
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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