参数资料
型号: ADM1075-2ACPZ
厂商: Analog Devices Inc
文件页数: 1/52页
文件大小: 0K
描述: IC HOT SWAP CTRLR -48V 28LFCSP
标准包装: 1
类型: 热交换控制器
应用: -48V 远程电力系统,高可用性,电信/数据通信系统
内部开关:
电流限制: 可调
电源电压: -35 V ~ -80 V
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 28-WFQFN 裸露焊盘,CSP
供应商设备封装: 28-LFCSP-WQ(5x5)
包装: 托盘

?48 V Hot Swap Controller and Digital
Power Monitor with PMBus Interface
Data Sheet
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/I 2 C interface for control, telemetry, and fault
recording
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
1.
2.
3.
4.
5.
6.
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/I 2 C 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.
FUNCTIONAL BLOCK DIAGRAM
–48V RTN (0V)
R DROP
VIN
SPLYGD
SHDN RESTART
12V
5V
VEE
UVH
UVL
OV
V CC AND
REFERENCE
GENERATOR
UNDERVOLTAGE
AND
OVERVOLTAGE
DETECTOR
POWER
ACCUMULATOR
POWER
MULTIPLIER
12-BIT ADC
DIGITAL
AND
PMBUS
LATCH
GPO1/ALERT1/CONV
GPO2/ALERT2
SDAO
SDAI
SCL
ADR
C LOAD
DC-TO-DC
CONVERTER
3.3V
2.8V
...etc.
GND
ADC_AUX
ADC_V
FET POWER
FOLDBACK
PWRGD
DRAIN
CONTROL
PLIM
VCAP
SDA_ISO
FAULT TIMER
VEE
ADuM1250
SCL_ISO
ISET
GATE CONTROL
CURRENT LIMIT
GATE
SENSE+
N-FET
R SENSE
SENSE–
TIMER
SS
VEE_G
VEE
–48V
Figure 1.
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ?2011–2014 Analog Devices, Inc. All rights reserved.
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