{"id":8454,"date":"2026-06-29T01:17:31","date_gmt":"2026-06-29T01:17:31","guid":{"rendered":"https:\/\/materialparts.com\/tps23882rtqr\/"},"modified":"2026-06-29T01:17:31","modified_gmt":"2026-06-29T01:17:31","slug":"tps23882rtqr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/tps23882rtqr\/","title":{"rendered":"TPS23882RTQR"},"content":{"rendered":"

Productos<\/h2>\n

The TPS23882RTQR from Texas Instruments is a Type-3 2-pair 8-channel Power over Ethernet (PoE) PSE controller in a 56-pin VQFN package, compliant with IEEE 802.3af\/at\/bt standards. It features SRAM programmability for in-field firmware updates, 200 m\u03a9 current sense resistors, 14-bit per-port ADC, and programmable power limiting with \u00b13% accuracy, supporting 4 W, 7 W, 15.4 W, and 30 W port allocations.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Standards<\/td>\nIEEE 802.3af\/at\/bt<\/td>\n<\/tr>\n
Canales<\/td>\n8 (2-pair per port)<\/td>\n<\/tr>\n
Power Levels<\/td>\n4 W \/ 7 W \/ 15.4 W \/ 30 W<\/td>\n<\/tr>\n
Current Sense Resistor<\/td>\n200 m\u03a9<\/td>\n<\/tr>\n
Current Sensing Accuracy<\/td>\n2%<\/td>\n<\/tr>\n
Max Current Limit<\/td>\n1.25 A per port<\/td>\n<\/tr>\n
Power Supply (VDD)<\/td>\n3.0 V to 3.6 V (3.3 V nominal)<\/td>\n<\/tr>\n
Power Supply (VPWR)<\/td>\n44 V to 57 V (54 V nominal)<\/td>\n<\/tr>\n
Interface<\/td>\nI2C (8-bit or 16-bit mode)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
Paquete<\/td>\nVQFN-56 (8.0 \u00d7 8.0 mm)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • SRAM programmable for in-field firmware updates (FirmPSE)<\/li>\n
  • 14-bit integrating ADC per port for current monitoring<\/li>\n
  • Never-fooled 4-point PD detection<\/li>\n
  • Auto-class discovery and power measurement<\/li>\n
  • Programmable power limiting \u00b13% accuracy<\/li>\n
  • Port remapping and pin-to-pin compatibility with TPS2388<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • PoE network switches (NVR, small business)<\/li>\n
    • Campus and branch switches<\/li>\n
    • Wireless access point power injection<\/li>\n
    • IP camera and VoIP phone PSE<\/li>\n
    • Industrial Ethernet power sourcing<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS23882RTQR from Texas Instruments is a Type-3 2-pair 8-channel Power over Ethernet (PoE) PSE controller in a 56-pin VQFN package, compliant with IEEE 802.3af\/at\/bt standards. It features SRAM programmability for in-field firmware updates, 200 m\u03a9 current sense resistors, 14-bit per-port ADC, and programmable power limiting with \u00b13% accuracy, supporting 4 W, 7 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[31,13],"tags":[],"chip_brand":[138],"class_list":["post-8454","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"8-ch PoE PSE controller, IEEE 802.3bt, SRAM programmable, 200m\u03a9 sense, VQFN-56","date_code":"","package_case":"VQFN-56 (8.0 \u00d7 8.0 \u00d7 0.95 mm)","in_stock":3200,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps23882.pdf","price":"$3.40 @ 2ku","product_introduction":"The Texas Instruments TPS23882RTQR is an 8-channel Power Sourcing Equipment (PSE) controller compliant with IEEE 802.3bt Type-3 2-pair PoE standards. It provides full PD detection, classification, and power management across 8 independent ports with selectable power allocations of 4 W, 7 W, 15.4 W, or 30 W. The device features SRAM programmability enabling in-field firmware updates via I2C for ongoing IEEE compliance and interoperability. With 200 m\u03a9 current sense resistors and dedicated 14-bit ADCs per port, it achieves 2% current sensing accuracy and continuous port monitoring. Programmable power limiting with \u00b13% accuracy and 1.25 A current limit supports non-standard applications above 60 W sourced.","working_principle":"The TPS23882 manages the complete PoE power delivery sequence per port. First, detection uses 4-point resistance measurement to verify a valid PD signature (19-26.5 k\u03a9). Then classification determines the PD power requirement through mutual identification per IEEE 802.3bt, including auto-class measurement of actual power consumption. After successful detection and classification, the controller applies power through external MOSFETs with inrush current limiting via foldback protection. During operation, the 14-bit ADC continuously monitors port current, and DC disconnect detection determines when the PD is removed. The I2C interface provides register-based control for auto, semi-auto, or manual operating modes, and the SRAM enables firmware updates for evolving PoE standards compliance.","pin_description":"
      Pin Group<\/th>Name<\/th>Description<\/th><\/tr>
      1-8<\/td>SEN1-SEN8<\/td>Port 1-8 Current Sense Inputs<\/td><\/tr>
      9-16<\/td>GATE1-GATE8<\/td>Port 1-8 MOSFET Gate Drives<\/td><\/tr>
      17-24<\/td>DRAIN1-DRAIN8<\/td>Port 1-8 Drain Voltage Sense<\/td><\/tr>
      25<\/td>VDD<\/td>3.3 V Logic Supply<\/td><\/tr>
      26<\/td>VPWR<\/td>54 V Power Supply<\/td><\/tr>
      27<\/td>AGND\/DGND<\/td>Ground References<\/td><\/tr>
      28-30<\/td>SDAI\/SDAO\/SCL<\/td>I2C Communication<\/td><\/tr>
      31<\/td>INT<\/td>Interrupt Output<\/td><\/tr>
      32<\/td>OSS<\/td>Fast Shutdown Input<\/td><\/tr>
      33-36<\/td>A0-A3<\/td>I2C Address \/ Control<\/td><\/tr>
      37<\/td>RESET<\/td>Device Reset<\/td><\/tr>
      38-56<\/td>KSENS\/SPARE<\/td>Kelvin Sense \/ Reserved<\/td><\/tr><\/table>","application_scenarios":"
      • PoE Network Switches<\/b>: 8-port PSE control in small business and campus switches supporting IEEE 802.3bt Type 3 up to 30 W per port<\/li>
      • NVR\/DVR Systems<\/b>: Power injection for up to 8 IP cameras with auto-class discovery optimizing power budget allocation<\/li>
      • Wireless AP Infrastructure<\/b>: Intelligent power management for 802.11ac\/ax access points with programmable current limits<\/li>
      • Industrial Ethernet<\/b>: Rugged PoE sourcing for factory automation sensors and actuators with -40\u00b0C to +125\u00b0C operation<\/li>
      • VoIP Phone Systems<\/b>: IEEE 802.3af\/at PSE for enterprise IP phone deployments with never-fooled detection preventing false power application<\/li><\/ul>","alternative_models":"
        Model<\/th>Brand<\/th>Channels<\/th>Standard<\/th>SRAM<\/th><\/tr>
        TPS2388RTQR<\/td>TI<\/td>8<\/td>802.3at<\/td>No<\/td><\/tr>
        TPS23880RTQR<\/td>TI<\/td>8<\/td>802.3at<\/td>No<\/td><\/tr>
        PSE5070<\/td>Microchip<\/td>4<\/td>802.3bt<\/td>No<\/td><\/tr>
        LTC4291<\/td>ADI<\/td>8<\/td>802.3bt<\/td>Yes<\/td><\/tr>
        MAX5980<\/td>Maxim<\/td>8<\/td>802.3at<\/td>No<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8454","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=8454"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8454\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=8454"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=8454"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=8454"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=8454"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}