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ADM1075-2ACPZ

更新时间： 2024-11-05 07:18:47

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
52页	740K
描述
?48 V Hot Swap Controller and Digital

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ADM1075-2ACPZ 数据手册

−48 V Hot Swap Controller and Digital

Power Monitor with PMBus Interface

Data Sheet

ADM1075

FEATURES

PRODUCT HIGHLIGHTS

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/I²C interface for control, telemetry, and fault

recording

1. Constant Power Foldback.

Maximum FET power set by a PLIM resistor divider. This

eases complexity when designing to maintain FET SOA.

2. Adjustable Current Limit.

The current limit is adjustable via the ISET pin allowing for

the use of a standard value sense resistor.

3. 12-Bit ADC.

Accurate voltage, current, and power measurements. Also

enables calculation of energy consumption over time.

4. PMBus/I²C Interface.

PMBus fast mode compliant interface used to read back

status and data registers and set warning and fault limits.

5. Fault Recording.

Latched status registers provide useful debugging infor-

mation to help trace faults in high reliability systems.

6. Built-In Soft Start.

28-lead LFCSP and TSSOP

−40°C to 105°C junction temperature (T_J) operating range

APPLICATIONS

Telecommunication and data communication equipment

Central office switching

−48 V distributed power systems

Negative power supply control

High availability servers

Soft start capacitor controls inrush current profile with

di/dt control.

FUNCTIONAL BLOCK DIAGRAM

–48V RTN (0V)

12V

DROP

SPLYGD

SHDN

RESTART

VIN

3.3V

2.8V

...etc.

GND

LATCH

CC AND

POWER

ACCUMULATOR

VEE

REFERENCE

GENERATOR

GPO1/ALERT1/CONV

GPO2/ALERT2

SDAO

DC-TO-DC

CONVERTER

DIGITAL

AND

PMBUS

UVH

UVL

LOAD

POWER

MULTIPLIER

UNDERVOLTAGE

AND

OVERVOLTAGE

DETECTOR

SDAI

SCL

12-BIT ADC

ADR

ADC_AUX

ADC_V

PWRGD

DRAIN

FET POWER

FOLDBACK

CONTROL

PLIM

VCAP

ISET

SDA_ISO

SCL_ISO

ADuM1250

FAULT TIMER

GATE CONTROL

CURRENT LIMIT

VEE

N-FET

GATE

SENSE+

SENSE–

SENSE

VEE_G

TIMER

VEE

–48V

Figure 1.

Rev. A

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 registeredtrademarks arethe property of their respective owners.

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

Tel: 781.329.4700 www.analog.com

12 3 4 5 6 7...52

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