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LM10520

更新时间： 2024-02-24 02:06:48

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描述
20A Adaptive Voltage Scaling (AVS) Evaluation Board

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LM10520 数据手册

National Semiconductor

Application Note 2058

Mark Hartman

LM10520 20A Adaptive

Voltage Scaling (AVS)

Evaluation Board

November 2, 2010

General Description

Features

The LM10520 is a single-phase Energy Management Unit

(EMU) that actively reduces system-level power consumption

by utilizing a continuous, real-time, closed-loop Adaptive Volt-

age Scaling (AVS) scheme. The AVS technology enables

optimum energy management delivery to the load in order to

maximize system-level energy savings.

•

Closed-loop/Adaptive Voltage Scaling (AVS)

PWI 1.0/PWI 2.0 compatible

Startup with a pre-biased output load

Adjustable soft-start/tracking support

PGOOD flag and shutdown

Under Voltage Lock Out (UVLO)

Over Voltage Protection (OVP)

Ability to synchronize switching frequency

Cycle-by-cycle current limiting

Thermal Shutdown

The LM10520 evaluation board is capable of delivering up to

20A with an output voltage range of 0.6V - 1.2 V. It includes

a DOSA compatible edge connector to enable convenient

evaluation of AVS on a high performance ASIC or FPGA

which typically require between 10A - 20A. Most of the fea-

tures of the device can be accessed through jumper settings

and the PWI interface.

Applications

The LM10520 evaluation kit ships with 2 adaptor boards. The

PWI2USB board allows connection to a PC for GUI control of

the device. The AVS adaptor board stacks on top of the US-

B2PWI board and provides a header to connect to the

LM10520. The AVS adaptor board also provides power con-

nectors to conveniently apply high current loads and high

voltage inputs that USB can not provide.

•

Point of Load regulation

Servers and networking cards

Set-top-box processors

Video processors and graphic cards

Medical and industrial processors

Operation Range

Parameter

Min

Max

Units

PVIN

∼5

IPVIN

∼3

5.25

100

1.2

AVIN*

IAVIN

VOUT

IOUT

4.75

0.72

* AVIN improves efficiency, but is not required.

301238

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