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STMicroelectronics STEVAL-DPSTPFC1

Name: STEVAL-DPSTPFC1
Brand: STMicroelectronics
SKU: STEVAL-DPSTPFC1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STEVAL-DPSTPFC1

Manufacturer:: STMicroelectronics

Category:: Evaluation and Demonstration Boards and Kits

Package:

Datasheet:: STEVAL-DPSTPFC1.pdf

Description:: EVAL BOARD FOR SCTW35N65G2V

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,705

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Product details

Overview

STEVAL-DPSTPFC1 from STMicroelectronics is a 3.6 kW bridgeless totem-pole boost reference design for digital power factor correction (PFC) with integrated inrush current limiter (ICL). It implements a high-efficiency AC-DC front-end using SiC MOSFET SCTW35N65G2V, automotive-grade SCR TN3050H-12WY, isolated gate driver STGAP2S, and STM32F334 MCU - achieving 97.5% peak efficiency and 3.7% THD at 230 V_RMS/50 Hz.

For engineers reviewing the STEVAL-DPSTPFC1 datasheet, STEVAL-DPSTPFC1 application notes, STEVAL-DPSTPFC1 schematic diagrams, or STEVAL-DPSTPFC1 bill of materials, this reference design delivers verified performance data for EV on-board chargers, telecom/server SMPS, and industrial UPS systems requiring compact, EMI-compliant PFC stages operating up to 4 kV surge immunity.

Technical Context

The design employs a bridgeless totem-pole topology where the TN3050H-12WY SCR acts as an AC line polarity switcher enabling active inrush current limitation during startup and line-drop recovery. This eliminates mechanical pre-charge relays and avoids EMI bouncing effects while maintaining optimal PFC efficiency across input ranges (85–264 V_RMS).

Control is executed by the STM32F334R8T6 MCU featuring HRTIM timers, analog comparators, and op-amps optimized for real-time digital PFC algorithms. The system operates at 72 kHz switching frequency, uses VIPER26LD for auxiliary 12 W high-voltage DC/DC conversion, and integrates galvanically isolated drivers and current/voltage sensing for robust closed-loop regulation.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	3.6 kW at 230 V_RMS/50 Hz; enables single-stage PFC for high-power server/telecom SMPS
Peak Efficiency	97.5 % at 2 kW output; reduces thermal load and cooling requirements in enclosed systems
THD	3.3 % at 2.5 kW / 230 V_RMS; meets IEC 61000-3-2 Class A harmonic limits
Switching Frequency	72 kHz; balances SiC MOSFET conduction loss vs. magnetic component size and EMI filter volume
Input Voltage Range	85–264 V_RMS; supports universal AC input for global deployment without manual configuration
EMI Compliance	Validated to 4 kV surge per IEC 61000-4-5; enables direct use in industrial and EV charging environments
Output DC Voltage	400–450 V; compatible with standard 400 V bus architectures in motor drives and battery chargers

Availability

STEVAL-DPSTPFC1 is available at Aetrix Electronics and suitable for EV on-board chargers, telecom/server SMPS, and industrial UPS systems requiring stable component supply and validated reference design reuse.

Supply support for STEVAL-DPSTPFC1 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 specializing in power management, microcontrollers, and analog/mixed-signal ICs for industrial, automotive, and energy-efficient applications.

This reference design belongs to ST's Digital Power Solutions product line, engineered to accelerate development of high-efficiency, digitally controlled AC-DC converters targeting EV infrastructure, datacenter power supplies, and industrial motor drives.

FAQ

What firmware is included with STEVAL-DPSTPFC1?

The board ships with production-ready PFC/ICL control firmware for the STM32F334 MCU, implementing digital average-current-mode control, soft-start sequencing, overvoltage/overcurrent protection, and THD-optimized modulation. Source code and configuration tools are provided via ST's eDesignSuite and STM32Cube ecosystem.

Does STEVAL-DPSTPFC1 support both 110 V and 230 V AC inputs?

Yes - it operates across 85–264 V_RMS input range with automatic adaptation. At 110 V_RMS/60 Hz, it delivers 1.6 kW input power and 94.8% peak efficiency; at 230 V_RMS/50 Hz, it achieves full 3.6 kW capability and 97.5% efficiency, validated per DB3916 Rev 2 test conditions.

How is inrush current limited without NTC thermistors or relays?

The TN3050H-12WY SCR functions as an active AC line polarity switcher, triggered only after zero-crossing detection and voltage ramp confirmation. This enables precise turn-on timing that limits peak inrush to <16 A RMS while avoiding thermal derating and lifetime degradation associated with passive NTCs or electromechanical relays.

Can the control board be used independently of the power board?

Yes - the control board (featuring STM32F334R8T6, isolated communication interfaces, and debug headers) is electrically and mechanically decoupled. It connects to the power board via a standardized 32-pin digital power connector and can interface with custom power stages using the documented pinout and firmware API.

STEVAL-DPSTPFC1 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Packaging:: Bulk

Product Status:: Active

Type:: Power Management

Function:: Power Factor Correction

Embedded:: -

Utilized IC / Part:: SCTW35N65G2V, TN3050H-12WY

Primary Attributes:: -

Secondary Attributes:: -

Contents:: Board(s)

STEVAL-DPSTPFC1 FAQ

1.How can I place an order for STEVAL-DPSTPFC1 through Aetrix?

Please submit a Request for Quotation (RFQ) for STEVAL-DPSTPFC1 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 STEVAL-DPSTPFC1 reliable?

The price and inventory of STEVAL-DPSTPFC1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-DPSTPFC1 is usually 5 days.

3.What payment methods are accepted for STEVAL-DPSTPFC1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-DPSTPFC1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STEVAL-DPSTPFC1?

STEVAL-DPSTPFC1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STEVAL-DPSTPFC1 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 STEVAL-DPSTPFC1?

For technical support, including STEVAL-DPSTPFC1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-DPSTPFC1 requirements.

6.How does Aetrix verify that STEVAL-DPSTPFC1 is sourced from the original manufacturer or authorized distributors?

All STEVAL-DPSTPFC1 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 STEVAL-DPSTPFC1 meets industry standards.

7.What is the process for return or replacement of STEVAL-DPSTPFC1?

All STEVAL-DPSTPFC1 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-DPSTPFC1, 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 STEVAL-DPSTPFC1 part is unused and in its original packaging.

Return procedure for STEVAL-DPSTPFC1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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