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TPS23841PAPR Texas Instruments
Texas Instruments
Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.
View All Product from Texas InstrumentsThe TPS23841PAPR is a high-power, wide voltage range, quad-port sourcing equipment manager. The TPS23841PAPR can provide up to 570 mA per port over a wide temperature range (-40°C to +125°C). Each port may operate from 21.5 V up to 57 V. The integrated output eliminates two external components per port (MOSFET and sense resistor) and survives 100-V transients. Four individual 15-bit A/D converters are used to measure signature resistance, voltage, current and die temperature, resulting in a simple and robust PSE solution. The TPS23841PAPR comes with a comprehensive software solution to meet the most demanding applications which can serve as a core for all PoE system designs.
The TPS23841PAPR has three internal supply buses (10 V, 6.3 V and 3.3 V) generated from the 48-V input supply. These supplies are used to bias all internal digital and analog circuitry. Each supply has been brought out separately for proper bypassing to insure high performance. The digital supply (3.3 V) is available for powering external loads up to 2 mA. For more demanding loads it is highly recommended to use external buffers to prevent system degradation. When the TPS23841PAPR is initially powered up an internal Power-on-Reset (POR) circuit resets all registers and sets all ports to the off state to ensure that the device is powered up in a known safe operating state.
The TPS23841PAPR has three modes of operation; auto mode (AM), semi-auto mode (SAM) and power management mode (PMM).
TPS23841PAPR integrated output stage provides port power and low-side control. The internal low-side circuitry is designed with internal current sensing so there are no external resistors required. The output design ensures the power switches operate in the fully enhanced mode for low power dissipation.
The I2C interface allows easy application of opto-coupler circuitry to maintain Ethernet port isolation when a ground based micro-controller is required. The TPS23841PAPR five address pins (A1-A5) allow the device to be addressed at one of 31 possible I2C addresses. Per-port write registers separately control each port state (discovery, classification, legacy, power up, etc) while the read registers contain status information of the entire process along with parametric values of discovery, classification, and real-time port operating current, voltage and die temperature.
The proprietary 15-bit integrating A/D converter is designed to meet the harsh environment where the PSEPM resides. The converter is set for maximum rejection of power line noise allowing it to make accurate measurements of line currents during discovery, classification and power delivery for reliable power management decisions.
The TPS23841PAPR is available in either 64-pin PowerPAD down (PAP) or 64-pin PowerPAD up (PJD) packages.
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TYPE | DESCRIPTION | Select all |
---|---|---|
Auxiliary Sense | No | |
Number of Channels | 4 | |
Type | Controller (PSE) | |
Supplier Device Package | 64-HTQFP (10x10) | |
Product Status | Active | |
Package / Case | 64-PowerTQFP | |
Package | Tape & Reel (TR) | |
Mounting Type | Surface Mount | |
Operating Temperature | -40°C ~ 125°C | |
Current - Supply | 10mA | |
Voltage - Supply | 21.5V ~ 57V | |
Standards | 802.3af (PoE) | |
Internal Switch(s) | Yes | |
Power - Max | 25 W |
Texas Instruments
Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.
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