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STMicroelectronics EVALPM8800A-HP
- Part No.:
- EVALPM8800A-HP
- Manufacturer:
- STMicroelectronics
- Package:
- Datasheet:
-
EVALPM8800A-HP.pdf
- Description:
- EVAL BOARD FOR PM8800A
- Quantity:
- Payment:
- Shipping:
Inventory:3,775
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Product details
Overview
EVALPM8800A-HP from STMicroelectronics is an evaluation board for the PM8800A IEEE 802.3af-compliant PoE-PD interface and current-mode PWM controller, supporting dual-input operation (PoE + auxiliary), integrated 100 V/0.5 Ω hot-swap MOSFET, programmable 85–495 kHz oscillator, and 80% max duty cycle with slope compensation. It enables rapid prototyping of high-power (>12.95 W) powered devices such as VoIP phones and security cameras.
For engineers reviewing the EVALPM8800A-HP datasheet, EVALPM8800A-HP pinout, EVALPM8800A-HP application, or EVALPM8800A-HP equivalent, this board provides validated reference schematics for isolated flyback and non-isolated buck topologies, full thermal management guidance, and direct access to all PM8800A control pins including RT, SS, AUXII, DCCL, and nPGD - critical for PoE PD compliance validation and power stage tuning.
Technical Context
The EVALPM8800A-HP implements the complete PM8800A functional architecture: a dual-source PoE interface (detection, classification, UVLO, in-rush/DC current limiting) coupled with a current-mode PWM controller featuring internal error amplifier (1.25 V reference), programmable soft-start, leading-edge blanking, and cycle-by-cycle overcurrent protection at 0.5 V CS threshold.
It supports both isolated (flyback) and non-isolated (buck) DC-DC configurations via configurable feedback (VFB/COMP), gate drive (GD), and auxiliary enable logic (AUXI_IRL/AUXII). The board exposes all 16 HTSSOP pins-including exposed pad (EP) tied to VSS-and includes discrete components matching ST's recommended values for RCLASS (24.5 kΩ), DCCL (15.4–82 kΩ), and RT (33 kΩ / 88 kΩ options).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Target Device | PM8800A PoE-PD interface + PWM controller IC in HTSSOP16 package |
| Input Support | IEEE 802.3af-compliant PoE (37–57 V) and auxiliary DC sources (≥15 V) |
| Oscillator Range | 85–495 kHz via external RT resistor; accepts external sync pulses |
| Current Limiting | Programmable in-rush (120–490 mA) and DC current limit (up to 800 mA) |
| Duty Cycle | 80% maximum with internal slope compensation for stable current-mode operation |
| Protection Features | Thermal shutdown (130 °C / 160 °C), UVLO (38.5 V / 31.5 V), nPGD power-good signaling |
| Topology Support | Validated for isolated flyback and non-isolated buck converter implementations |
Availability
EVALPM8800A-HP is available at Aetrix Electronics and suitable for VoIP phone development, IP security camera power design, and industrial PoE-powered appliance qualification requiring stable component supply, pre-validated thermal layout, and IEEE 802.3af compliance verification.
Supply support for EVALPM8800A-HP 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, specializing in power management, analog, microcontrollers, and automotive-grade ICs with broad industrial and communications portfolio coverage.
The EVALPM8800A-HP belongs to ST's Power Over Ethernet evaluation platform family, designed specifically to accelerate development of high-reliability, multi-source powered devices compliant with IEEE 802.3af and forward-compatible with 802.3at power requirements.
FAQ
Does EVALPM8800A-HP support both isolated and non-isolated DC-DC topologies?
Yes. The board includes jumpers and layout provisions to configure the PM8800A for either isolated flyback (using optocoupler feedback to COMP/VFB) or non-isolated buck (direct resistive divider to VFB) operation. Both configurations are demonstrated in ST's application schematics (Figures 1 and 2) and validated per Section 1.1 of the PM8800A datasheet.
What auxiliary power sources can be used with EVALPM8800A-HP?
The board supports auxiliary DC inputs ≥15 V applied to the AUXI_IRL and AUXII pins, enabling seamless switchover from PoE when cable power drops below UVLO thresholds. External sources must meet the PM8800A's AUXI_IRL UVLO release (16 V) and AUXII bias voltage (0.85–1.4 V) specifications per Table 5 of the datasheet.
How is the 802.3af classification current programmed on EVALPM8800A-HP?
Classification current is set by an external resistor between RCLASS and VSS. The board includes footprint and test points for standard values (e.g., 24.5 kΩ for Class 3), aligning with PM8800A's 1.4 V classification reference and ±15% tolerance per Table 5. No onboard resistor is populated - users select based on target class.
Is thermal performance validated on EVALPM8800A-HP?
Yes. The board implements the HTSSOP16 exposed pad (EP) directly connected to a large copper pour tied to VSS, matching ST's thermal design guidelines (RthJA = 50 °C/W on 4-layer demo board per Table 3). Thermal shutdown thresholds (130 °C / 160 °C) are fully operational and verified during in-rush and continuous load testing.
EVALPM8800A-HP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Main Purpose:
- Special Purpose DC/DC, Power Over Ethernet
- Outputs and Type:
- 1 Isolated Output
- Voltage - Output:
- 20 W
- Current - Output:
- 5V
- Voltage - Input:
- 4A
- Regulator Topology:
- 30V ~ 60V
- Frequency - Switching:
- Flyback
- Contents:
- 250kHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- PM8800A
EVALPM8800A-HP FAQ
1.How can I place an order for EVALPM8800A-HP through Aetrix?
Please submit a Request for Quotation (RFQ) for EVALPM8800A-HP 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 EVALPM8800A-HP reliable?
The price and inventory of EVALPM8800A-HP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EVALPM8800A-HP is usually 5 days.
3.What payment methods are accepted for EVALPM8800A-HP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EVALPM8800A-HP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EVALPM8800A-HP?
EVALPM8800A-HP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EVALPM8800A-HP 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 EVALPM8800A-HP?
For technical support, including EVALPM8800A-HP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EVALPM8800A-HP requirements.
6.How does Aetrix verify that EVALPM8800A-HP is sourced from the original manufacturer or authorized distributors?
All EVALPM8800A-HP 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 EVALPM8800A-HP meets industry standards.
7.What is the process for return or replacement of EVALPM8800A-HP?
All EVALPM8800A-HP units undergo pre-shipment inspection (PSI). If there is an issue with EVALPM8800A-HP, 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 EVALPM8800A-HP part is unused and in its original packaging.
Return procedure for EVALPM8800A-HP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
EVALPM8800A-HP Tags
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