ADM1273
RECOMMENDED FOR NEW DESIGNSHigh Voltage Positive Hot-Swap Controller and Digital Power Monitor with PMBus
- Part Models
- 2
- 1ku List Price
- Starting From $15.17
Overview
- Drop-in replacement to ADM1272
- Controls supply voltages from 16V to 80V (absolute maximum 120V)
- High voltage (80V) IPC-9592 compliant packaging
- <500ns response time to short circuit
- FET energy monitoring for adaptable FET SOA protection
- Gate boost mode for fast recovery from OC transients
- Programmable random start mode to stagger power-on
- FET fault detection
- Remote temperature sensing with programmable warning and shutdown thresholds
- Programmable 2.5mV to 30mV system current-limit setting range
- ±0.85% accurate current measurement with 12-bit ADC
- ILOAD, VIN, VOUT, temperature, power, and energy telemetry
- Programmable start-up current limit
- Programmable linear output voltage soft start
- 1% accurate UV and OV thresholds
- Programmable hot-swap restart function
- 2 programmable GPIO pins
- Reports power and energy consumption
- Peak detect registers for current, voltage, and power
- PMBus fast mode compliant interface
- 48-lead, 7 mm × 8 mm LFCSP
The ADM1273 is a hot-swap controller that allows a circuit board to be removed from or inserted into a live backplane. It also features current, voltage, and power readback via an integrated 12-bit analog-to-digital converter (ADC), accessed using a PMBus™ interface. This device can withstand up to 120V, which makes it very robust in surviving surges and transients commonly associated with high voltage systems, usually clamped using protection devices such as transient voltage suppressors (TVSs) that can often exceed 100V.
The load current, ILOAD, is measured using an internal current sense amplifier that measures the voltage across a sense resistor in the power path via the SENSE+ and SENSE− pins. A default current limit sense voltage of 30mV is set, but this limit can be adjusted down, if required, using a resistor divider network from the VCAP regulator output voltage to the ISET pin. An additional resistor can also be placed from ISET to VIN (or VOUT) to allow the current limit to track inversely with the rail voltage. This resistor allows an approximate system power limit to be used.
Please see the Data Sheet for the full description.
APPLICATIONS
- 48V/54V data center servers
- Power monitoring and control/power budgeting
- Central office equipment
- Telecommunication and data communication equipment
- Industrial applications
Documentation
Data Sheet 1
User Guide 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADM1273-1ACPZ | 48-Lead LFCSP (8mm x 7mm w/ EP) | ||
| ADM1273-1ACPZ-RL | 48-Lead LFCSP (8mm x 7mm w/ EP) |
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareTools & Simulations
LTspice
Models for the following parts are available in LTspice:
- ADM1273
Design Tool 1
LTpowerPlay®
LTpowerPlay® is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products.
Open ToolLTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
Evaluating the ADM1273 High-Voltage Positive Hot-Swap Controller and Digital Power Monitor with PMBus