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Texas Instruments TPS2384PAPR
- Part No.:
- TPS2384PAPR
- Manufacturer:
- Texas Instruments
- Category:
- Power Over Ethernet (PoE) Controllers
- Package:
- 64-PowerTQFP
- Datasheet:
-
TPS2384PAPR.pdf
- Description:
- IC POE CNTRL 4 CHANNEL 64HTQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,922
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Product details
Overview
TPS2384PAPR from Texas Instruments is a quad-port IEEE 802.3af-compliant Power Sourcing Equipment (PSE) power manager IC with integrated high-side switches and sense resistors, operating from a single 44–57-V input supply, featuring four independent 15-bit A/D converters for port voltage/current/resistance/die temperature measurement, and supporting auto, semi-auto, and power management modes for Ethernet PoE midspans and enterprise switches.
For engineers reviewing the TPS2384PAPR datasheet, TPS2384PAPR pinout, TPS2384PAPR application, or TPS2384PAPR equivalent, key selection considerations include its 64-pin HTQFP PowerPAD™ package, 400-kHz I²C interface, –40°C to 125°C junction temperature range, integrated DC/AC disconnect capability, and support for legacy PD detection without external FETs or current-sense resistors per port.
Technical Context
The TPS2384PAPR implements a proprietary integrating 15-bit A/D architecture optimized for 60-Hz noise rejection during discovery and classification, using CT and RBIAS pins to configure internal clock frequency (245 kHz typical) and bias currents. Each port includes dedicated analog front-end circuitry with differential sensing, UV/OV comparators, thermal protection, and controlled current ramp control to limit inrush into PD bulk capacitance.
It supports three functional modes: autonomous auto mode (no MCU required), semi-auto mode (I²C read-only status + limited control), and full power management mode (full register-based control via I²C), enabling AC disconnect, legacy PD detection, and real-time port-level power budgeting across all four ports.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IEEE Standard | Compliant with IEEE 802.3af for PoE PSE operation; enables interoperability with Class 0–4 PDs. |
| Input Voltage Range | 44 V to 57 V on V48 pin; supports standard PoE 48-V infrastructure with ±10% tolerance. |
| Operating Temperature | –40°C to 125°C junction temperature; qualified for industrial and enterprise switch environments. |
| I²C Interface Speed | Up to 400 kHz; enables fast configuration and real-time monitoring of all four ports. |
| Port On-Resistance | 1.3 Ω to 1.8 Ω typical; minimizes conduction loss and thermal dissipation per powered port. |
| A/D Resolution | 15-bit integrating converter per port; delivers high-accuracy measurements of port resistance, current, voltage, and die temperature. |
| Internal Supplies | Generates V10 (10 V), V6.3 (6.3 V), V3.3 (3.3 V), and V2.5 (2.5 V) internally; eliminates need for external regulators. |
Pinout & Package
TPS2384PAPR is housed in a 64-pin HTQFP (PAP) package with 10.0 mm × 10.0 mm body size and exposed PowerPAD™ thermal pad on bottom for enhanced heat dissipation. Pin functions are validated per TI SLUS634F datasheet Rev F (Jan 2022).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V48 | Primary power input | Accepts 44–57 V PoE supply; requires local 0.1-μF decoupling to AG1 for stability. |
| P1–P4 | Port positive terminals | High-side 48-V load sense inputs; each paired with corresponding N1–N4 for differential voltage monitoring. |
| N1–N4 | Port negative terminals | Low-side switched return paths with integrated current limiting and fault protection. |
| SCL / SDA_I / SDA_O | I²C interface | Supports 400-kHz bidirectional communication; SDA_O is open-drain for opto-isolation compatibility. |
| INTB | Interrupt output | Active-low open-drain signal indicating fault on any port (e.g., overcurrent, UV/OV, thermal). |
| MS | Mode select | Logic low = auto mode (standalone); logic high = power management mode (I²C-controlled). |
| CT / RBIAS / CINT1–CINT4 | Timing & A/D integration | Configure internal clock (245 kHz typical) and enable precise 15-bit integrating A/D conversion per port. |
| AC_LO / AC_HI | AC disconnect drivers | Totem-pole outputs for driving external AC disconnect circuitry per IEEE 802.3af Section 7.2.11. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-port integration | Eliminates 8 external components (4 FETs + 4 sense resistors), reducing BOM count and PCB area vs discrete PSE designs. |
| 15-bit per-port A/D | Enables accurate real-time measurement of port resistance (discovery), current (classification), voltage, and die temperature - critical for reliable PD identification and power budgeting. |
| Controlled current ramp | Reduces EMI and limits inrush into PD bulk capacitance during power-up, improving system reliability and EMC compliance. |
| Three operational modes | Auto mode enables controller-less deployment; semi-auto allows status monitoring; PMM enables full software-defined power management with legacy PD support. |
| Integrated DC/AC disconnect | Supports both DC disconnect (open-circuit detection) and AC disconnect (capacitive coupling test) per IEEE 802.3af, using dedicated AC_LO/AC_HI outputs. |
Applications
| Enterprise Ethernet Switches | Midspan PoE Injectors |
|---|---|
Use Scenario: 24- or 48-port managed Ethernet switches delivering PoE to IP phones, wireless APs, and security cameras. IC Role / Device Role / Timing Role: Quad-port PSE power manager performing autonomous discovery, classification, and power delivery to up to four concurrent PDs per TPS2384PAPR instance. Use Value: Enables compact, thermally efficient multi-port PoE design with integrated current sensing and real-time A/D monitoring - no external FETs or sense resistors required per port. | Use Scenario: Standalone 4-port or 8-port midspan injectors adding PoE capability between non-PoE switches and PDs. IC Role / Device Role / Timing Role: Primary PSE controller managing power negotiation, fault handling, and thermal safety across multiple Ethernet pairs. Use Value: Supports legacy PD detection and AC disconnect testing, ensuring interoperability with older and non-standard devices while maintaining IEEE 802.3af compliance. |
| SOHO Hubs & Routers | PoE Network Extenders |
Use Scenario: Small-office/home-office routers with built-in 4-port PoE for VoIP phones and IoT sensors. IC Role / Device Role / Timing Role: Integrated PSE manager operating in auto mode to simplify firmware requirements and reduce MCU dependency. Use Value: Delivers robust, self-contained PoE functionality with overtemperature protection and 125°C max junction rating - suitable for fanless, enclosed enclosures. | Use Scenario: Long-reach PoE extenders deploying power and data over >100 m CAT5 cable. IC Role / Device Role / Timing Role: High-accuracy port monitor using 15-bit A/D to detect voltage drop and current anomalies across extended links. Use Value: Real-time port voltage/current A/D data (335–370 counts/V, 31–40 counts/mA) enables dynamic power budgeting and early fault prediction before cable or PD failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PoE PSE power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS23861RSLR | Single-port IEEE 802.3at/af-compliant PSE with integrated FET; smaller 32-pin QFN; lacks quad-port integration and 15-bit per-port A/D. | Targeted at space-constrained, lower-port-count systems; does not support standalone auto-mode sequencing across multiple ports. | Select when only one PoE port is needed and board area is critical; not a functional replacement for quad-port TPS2384PAPR. |
| MAX5984AEUI+T | Quad-port IEEE 802.3af PSE with integrated FETs; uses 12-bit A/D; supports 400-kHz I²C but lacks AC disconnect outputs and legacy detection support. | Requires external circuitry for AC disconnect; no native support for non-compliant PDs; narrower operating temp range (–40°C to 85°C). | Consider for cost-sensitive, temperature-moderate applications where AC disconnect and legacy detection are not required. |
Compared with TPS2384PAPR, TPS23861RSLR offers higher per-port efficiency in compact form but cannot replicate quad-port autonomous operation, while MAX5984AEUI+T provides quad integration at lower resolution and reduced feature set - neither matches the TPS2384PAPR's combination of 15-bit A/D accuracy, AC/DC disconnect, legacy support, and full auto-mode independence.
Availability
TPS2384PAPR is available at Aetrix Electronics and suitable for Ethernet enterprise switches, midspan PoE injectors, and SOHO hubs requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing for industrial PoE deployments.
Supply support for TPS2384PAPR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and power management technologies, with leadership in industrial, automotive, and communications infrastructure markets.
The TPS2384PAPR belongs to TI's Power-over-Ethernet (PoE) PSE product line, designed specifically for high-density, thermally demanding Ethernet switch and injector applications requiring IEEE 802.3af compliance, integrated power switching, and intelligent multi-port power management.
FAQ
What is the package type and thermal performance of the TPS2384PAPR?
The TPS2384PAPR uses a 64-pin HTQFP PowerPAD™ (PAP) package with 10.0 mm × 10.0 mm body size and an exposed thermal pad. Its junction-to-ambient thermal resistance (RθJA) is 23.9°C/W with appropriate PCB copper area and optional heatsink, enabling reliable operation at full load within the –40°C to 125°C junction temperature range specified for the TPS2384PAPR.
Does the TPS2384PAPR support legacy (non-IEEE) Powered Devices?
Yes, the TPS2384PAPR supports legacy PD detection through dedicated circuitry that applies a 2.6–4.3 mA current limit and measures port voltage with 1365–1445 counts/V resolution. This enables safe identification and power delivery to non-compliant devices without risking damage, a capability confirmed in the TPS2384PAPR datasheet Section 6.5 and Section 8.4.
How does the TPS2384PAPR implement IEEE 802.3af AC disconnect testing?
The TPS2384PAPR implements AC disconnect via two dedicated totem-pole outputs - AC_LO and AC_HI - which drive external AC coupling circuitry to inject a 100-Hz signal onto the powered pair. Detection of resulting current confirms valid PD signature per IEEE 802.3af Section 7.2.11, and this function is fully supported in power management mode (PMM) of the TPS2384PAPR.
Can the TPS2384PAPR operate without a microcontroller?
Yes, the TPS2384PAPR supports autonomous operation in auto mode (MS pin low), where it sequentially performs discovery, classification, and power-up on all four ports without external MCU intervention. This mode is fully self-contained and leverages internal state machines and timing - a core capability of the TPS2384PAPR validated in datasheet Section 8.4 and Figure 6-2.
What are the key timing parameters for port A/D conversion in the TPS2384PAPR?
The TPS2384PAPR uses a proprietary integrating A/D architecture with consistent 18–22 ms conversion time for Discovery1/2, Classification, Legacy, Port Current, and Port Voltage measurements (per Section 6.6). This timing is synchronized to the internal 245-kHz clock (set by CT=220 pF and RBIAS=124 kΩ), ensuring deterministic behavior critical for IEEE 802.3af compliance in the TPS2384PAPR.
TPS2384PAPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-PowerTQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Controller (PSE)
- Number of Channels:
- 4
- Power - Max:
- 15.4 W
- Internal Switch(s):
- Yes
- Auxiliary Sense:
- No
- Standards:
- 802.3af (PoE)
- Voltage - Supply:
- 44V ~ 57V
- Current - Supply:
- 10mA
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-HTQFP (10x10)
TPS2384PAPR FAQ
1.How can I place an order for TPS2384PAPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2384PAPR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS2384PAPR reliable?
The price and inventory of TPS2384PAPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2384PAPR is usually 5 days.
3.What payment methods are accepted for TPS2384PAPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2384PAPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2384PAPR?
TPS2384PAPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2384PAPR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS2384PAPR?
For technical support, including TPS2384PAPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2384PAPR requirements.
6.How does Aetrix verify that TPS2384PAPR is sourced from the original manufacturer or authorized distributors?
All TPS2384PAPR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS2384PAPR meets industry standards.
7.What is the process for return or replacement of TPS2384PAPR?
All TPS2384PAPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS2384PAPR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS2384PAPR part is unused and in its original packaging.
Return procedure for TPS2384PAPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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