TPS2483
Hot-Swap-Controller für 9 bis 80 V mit digitaler Leistungsüberwachung und Auto-Retry-Option
TPS2483
- 9-V to 36-V Input Range, 40 V Abs. Max
- Current, Voltage and Power Monitor
- ±0.5% Accurate Current Monitoring
(225°C < TJ < 85°C) - 16 Programmable I2C Addresses
- Configurable Averaging Options
- Programmable MOSFET SOA protection
- High Side Gate Drive for External N-FET
- Programmable Fault Timer
- Open-Drain Power-Good Output
- 20-Pin TSSOP Package
The TPS2482 and TPS2483 provide hotswap control and precision monitoring for 9-V to 36-V applications. Accurate voltage, current, and power monitoring is provided by a 16-bit A/D converter with a serial interface that is compatible with I2C and SMBus. Voltage and current measurements are interleaved and multiplied internally to provide concurrent power calculations. These devices have high current monitoring accuracy over temperature and a broad load range. This makes them well suited for applications where load identity and health is determined by current profile, such as remote radio heads or cellular antennae.
The hotswap section drives N-channel MOSFETs, with timed inrush and fault-current limiting. Advanced MOSFET safe operating area (SOA) protection is achieved by programmable constant-power foldback and a fixed current limit. This results in an exponential inrush current profile as shown in the start-up figure below. As VOUT ramps up and the VDS of the MOSFET is reduced the current increases keeping MOSFET power dissipation within its SOA at all times. The TPS2482 latches off after a hard fault, while the TPS2483 automatically attempts to restart after a cool-off delay.
The TPS2482 and TPS2483 can be dropped into existing TPS2480 and TPS2481 sockets to provide improved accuracy and operating voltage range. This can be accomplished with no PCB changes and minor software modifications.
While the standard monitoring function is limited to 36 V, with a few external components it is possible to monitor buses as high as 80 V. See special application description in High Voltage Application Example.
Technische Dokumentation
Typ | Titel | Datum | ||
---|---|---|---|---|
* | Data sheet | 36V Hotswap Controller with Digital Power Monitoring datasheet (Rev. A) | 15 Mär 2013 | |
Selection guide | Hot Swap Selection Tool | 28 Jul 2015 | ||
EVM User's guide | EVM User Guide for TPS2482 and TPS2483 | 20 Nov 2012 |
Design und Entwicklung
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TPS2483EVM-157 — TPS2483-Evaluierungsmodul
The Texas Instruments TPS2483EVM-157 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS2483 power-over-Ethernet powered device and DC/DC controller. The EVM contains input and output connectors as well as control jumpers to ease evaluation of device features.
TPS2480-81-90-91-92-93_CALC — TPS249x8x Design Calculator Rev B
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The TPS2482-3_CALC can be used to calculate the reporting accuracy of the TPS2482 and TPS2483 hot swap controller with digital power monitoring under user specified circuit conditions.
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Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
---|---|---|
TSSOP (PW) | 20 | Ultra Librarian |
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