参数资料
| 型号： | EVAL-ADM1176EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR ADM1176 |
| 产品培训模块： | Hot Swap Design |
| 标准包装： | 1 |
| 主要目的： | 电源管理，热交换控制器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADM1176 |
| 主要属性： | 热交换控制器，数字功率监控器，高端 MOSFET 驱动器 |
| 次要属性： | SMBus，I2C，3.15 V ~ 16.5 V 电源 |
| 已供物品： | 板，线缆，样品 IC |
| 相关产品： | ADM1176-2ARMZ-R7DKR-ND - IC CTRLR HOTSWAP 16.5V 10-MSOP ADM1176-1ARMZ-R7DKR-ND - IC CTRLR HOTSWAP 16.5V 10-MSOP ADM1176-2ARMZ-R7CT-ND - IC CTRLR HOTSWAP 16.5V 10-MSOP ADM1176-1ARMZ-R7CT-ND - IC CTRLR HOTSWAP 16.5V 10-MSOP ADM1176-2ARMZ-R7TR-ND - IC CTRLR HOTSWAP 16.5V 10-MSOP ADM1176-1ARMZ-R7TR-ND - IC CTRLR HOTSWAP 16.5V 10-MSOP |
Hot Swap Controller and
I 2 C Power Monitor
Data Sheet
FEATURES
FUNCTIONAL BLOCK DIAGRAM
Allows safe board insertion and removal from a live backplane
Controls supply voltages from 3.15 V to 16.5 V
Precision current sense amplifier
Precision voltage input
12-bit ADC for current and voltage readback
Charge-pumped gate drive for external N-channel FET
VCC
SENSE
ADM1176
A
V
I
MUX
0
1
12-BIT
ADC
I 2 C
SDA
SCL
A1
Adjustable analog current limit with circuit breaker
±3% accurate hot swap current limit level
Fast response limits peak fault current
CURRENT
SENSE
AMPLIFIER
A0
Automatic retry or latch-off on current fault
Programmable hot swap timing via TIMER pin
Active high ON pin
I 2 C fast mode-compliant interface (400 kHz maximum)
2 address pins allow 16 devices on the same bus
ON
1.3V
UNDERVOLTAGE
COMPARATOR
GND
FET DRIVE
CONTROLLER
TIMER
GATE
10-lead MSOP
APPLICATIONS
Figure 1.
Power monitoring/power budgeting
3.15V TO 16.5V
R SENSE
N-CHANNEL FET
Central office equipment
Telecommunications and data communications equipment
PCs/servers
VCC
SENSE
CONTROLLER
GENERAL DESCRIPTION
GATE
ADM1176
P = VI
The ADM1176 is an integrated hot swap controller that offers
digital current and voltage monitoring via an on-chip 12-bit
ON
SDA
SCL
SDA
SCL
analog-to-digital converter (ADC), communicated through an
I 2 C? interface.
TIMER
GND
A1
A0
An internal current sense amplifier measures voltage across the
sense resistor in the power path via the VCC pin and the SENSE pin.
The ADM1176 limits the current through this resistor by control-
ling the gate voltage (via the GATE pin) of an external N-
channel FET in the power path. The voltage across the sense
resistor (and therefore the inrush current) is kept below a preset
maximum.
The ADM1176 protects the external FET by limiting the time that
the maximum current runs through it. This current limit period
is set by the value of the capacitor attached to the TIMER pin.
Additionally, the device provides protection from overcurrent
events that may occur after the hot swap event is complete. In
the case of a short-circuit event, the current in the sense resistor
exceeds an overcurrent trip threshold, and the FET is switched
off immediately by pulling down the GATE pin.
Rev. C
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.
Figure 2. Applications Diagram
A 12-bit ADC can measure the current seen in the sense
resistor, as well as the supply voltage on the VCC pin. An
industry-standard I 2 C interface allows a controller to read
current and voltage data from the ADC. Measurements can be
initiated by an I 2 C command. Alternatively, the ADC can run
continuously, and the user can read the latest conversion data
whenever it is required. Up to 16 unique I 2 C addresses can be
created, depending on how the A0 and A1 pins are connected.
The ADM1176 is packaged in a 10-lead MSOP.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ?2006–2012 Analog Devices, Inc. All rights reserved.
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