TPS2483 Datasheet | Texas Instruments

.ti. TPS2482 TPS2483 SLUSAW1 A - DECEMBER 2012 - REVISED MARCH 2013 36-V Hotswap Controller with Precision I2C Power Monitoring Check for Samples: TPS2482, TPS2483 Features - 2 9-V to 36-V Input Range, 40 V Abs. Max - Current, Voltage and Power Monitor - ±0.5% Accurate Current Monitoring ( -25°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 APPLICATIONS - RRH (Remote Radio Heads) - Storage Networks - Plug-In Modules - Base Station 24 V Antenna Power - Industrial 24 V - 28 V Power DESCRIPTION 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 patible 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...