ADM1075-2ARUZ Analog Devices, ADM1075-2ARUZ Datasheet

ADM1075-2ARUZ

Manufacturer Part Number

ADM1075-2ARUZ

Description

Manufacturer

Analog Devices

Datasheet

1.ADM1075-2ARUZ-RL7.pdf (52 pages)

Specifications of ADM1075-2ARUZ

Pack_quantity

Comm_code

85423990

Lead_time

Eccn

EAR99

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Data Sheet

FEATURES

Constant power foldback for FET SOA protection

Precision (<1.0%) current and voltage measurement

Controls inrush and faults for negative supply voltages

Suitable for wide input range due to internal shunt regulator

25 mV/50 mV full-scale sense voltage

Fine tune current limit to allow use of standard sense resistor

Soft start inrush current limit profiling

1% accurate UVH and OV pins, 1.5% accurate UVL pin

PMBus interface for control, telemetry, and fault recording

28-lead TSSOP

−40°C to 105°C junction temperature (T

APPLICATIONS

Telecommunication and data communication equipment

Central office switching

−48 V distributed power systems

Negative power supply control

High availability servers

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

–48V

–48V RTN (0V)

VEE

ADC_V

VCAP

ISET

UVH

UVL

DROP

VIN

UNDERVOLTAGE

OVERVOLTAGE

GENERATOR

REFERENCE

DETECTOR

AND

TIMER

SPLYGD

) operating range

FET POWER

FOLDBACK

CONTROL

GATE CONTROL

CURRENT LIMIT

FAULT TIMER

ACCUMULATOR

FUNCTIONAL BLOCK DIAGRAM

MULTIPLIER

12-BIT ADC

POWER

−48 V Hot Swap Controller and Digital

Power Monitor with PMBus Interface

VEE_G

Figure 1.

SHDN

DIGITAL

PMBUS

AND

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

PRODUCT HIGHLIGHTS

VEE

RESTART

Constant Power Foldback.

Maximum FET power set by a PLIM resistor divider. This

eases complexity when designing to maintain FET SOA.

Adjustable Current Limit.

The current limit is adjustable via the ISET pin allowing for

the use of a standard value sense resistor.

12-Bit ADC.

Accurate voltage, current, and power measurements. Also

enables calculation of energy consumption over time.

PMBus Interface.

PMBus fast mode compliant interface used to read back

status and data registers and set warning and fault limits.

Fault Recording.

Latched status registers provide useful debugging infor-

mation to help trace faults in high reliability systems.

Built-In Soft Start.

Soft start capacitor controls inrush current profile with

di/dt control.

GATE

SENSE+

SENSE–

DRAIN

PLIM

LATCH

GPO1/ALERT1/CONV

GPO2/ALERT2

SDAO

SDAI

ADC_AUX

PWRGD

SCL

ADR

VEE

N-FET

SENSE

LOAD

CONVERTER

DC-TO-DC

ADuM1250

ADM1075

www.analog.com

12V

3.3V

2.8V

...etc.

GND

SDA_ISO

SCL_ISO

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