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Product Detailed Parameters
- Description：IC POE CNTRL 1 CHANNEL 36QFN
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Controller (PD), DC/DC
- Number of Channels：1
- Power - Max：-
- Internal Switch(s)：Yes
- Auxiliary Sense：Yes
- Standards：802.3at (PoE+), 802.3af (PoE)
- Voltage - Supply：57V (Max)
- Current - Supply：1mA
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：36-VFQFN Exposed Pad
- Supplier Device Package：36-QFN (6x6)
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Overview
The PD70211ILQ-TR is a Powered Device (PD) interface integrated circuit manufactured by Microchip Technology. It supports IEEE 802.3af, IEEE 802.3at, and HDBase T standards within PoE applications. The device features an advanced classification module capable of supporting two, three, four, or six-event classifications. It includes an internal discharge mechanism for rapid input capacitor discharge in DC/DC converters. The component utilizes a QFN-32 package and operates as a front-end solution for power delivery systems.
Feature Summary
- Supports multiple PoE standards including IEEE 802.3af, 802.3at, and HDBase T
- Advanced classification module enabling multi-event classification capabilities
- Integrated internal discharge for fast input capacitor release
- Configurable power pair assignment via SUPP_Sx pins
Applications
- Powered Device interfaces for IEEE 802.3af compliant systems
- Powered Device interfaces for IEEE 802.3at compliant systems
- HDBase T application front-ends
- Evaluation board designs for isolated flyback converters
Procurement Notes
Verify the specific suffix ILQ-TR against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with the intended PoE standard (af/at/HDBase T) for the target design. Check moisture sensitivity levels and storage requirements prior to assembly. Confirm that the QFN-32 footprint matches the PCB layout constraints.
Selection Notes
Select this component when designing Powered Devices requiring support for both legacy 802.3af and higher-power 802.3at standards alongside HDBase T compatibility. The integrated classification and discharge features simplify front-end design compared to discrete solutions. Consider the QFN-32 package size relative to available board space. Evaluate the need for configurable power pair assignment if non-standard wiring configurations are required.
Part Context
This part belongs to Microchip's Power Switch ICs for PoE/LAN category. It serves as a critical interface between the Ethernet physical layer and the local DC/DC converter. Similar devices in the family include the PD70201, which offers comparable functionality for specific PoE implementations. These components are essential for ensuring proper power negotiation and safety in networked powered equipment.
FAQ
What PoE standards does the PD70211 support?
The PD70211 supports IEEE 802.3af, IEEE 802.3at, and HDBase T standards.
How many classification events can the device handle?
It supports two, three, four, or six-event classifications through its advanced classification module.
What is the function of the internal discharge feature?
The internal discharge provides rapid discharge for the input capacitors of the DC/DC converter to ensure safety.
