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Home > Products > Development Boards, Kits, Programmers > Evaluation Boards > DC/DC & AC/DC (Off-Line) SMPS Evaluation Boards

Vishay Siliconix SIC403DB

Name: SIC403DB
Brand: Vishay Siliconix
SKU: SIC403DB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SIC403DB

Manufacturer:: Vishay Siliconix

Category:: DC/DC & AC/DC (Off-Line) SMPS Evaluation Boards

Package:

Datasheet:: SIC403DB.pdf

Description:: EVAL BOARD FOR SIC403

Quantity:: RFQ Add To RFQ list

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Inventory:4,542

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Product details

Overview

SIC403DB from Vishay Siliconix is a reference evaluation board designed to demonstrate the operation of the SiC403A/B synchronous buck regulator ICs. It supports 3 V–28 V input, delivers up to 6 A at programmable output voltages (0.6 V to VIN × 0.75), and integrates a 200 mA programmable LDO - enabling full validation of power-good signaling, soft-start, UVLO, over-current protection, and adaptive on-time control in PowerPAK® MLP32-55G package applications.

For engineers reviewing the SIC403DB datasheet, SIC403DB application, SIC403DB layout, or SIC403DB component compatibility, this board provides verified schematics, BOM, PCB Gerbers, thermal performance data, and PowerCAD simulation support for rapid integration into notebook, server, networking, and point-of-load power designs.

Technical Context

The SIC403DB implements the SiC403A/B IC in a fully assembled, tested, and characterized configuration with all critical passive components selected per Vishay's recommended design. It enables evaluation of both forced continuous mode (EN/PSV floating) and power-save mode (EN/PSV = VDD), including ultrasonic P-Save for SiC403A, across input ranges (3–28 V) and load conditions (0–6 A).

Board-level features include accessible test points for FB, VOUT, PGOOD, ILIM, SS, BST, and tON; jumper-selectable LDO enable (ENL) and bias source (internal LDO vs. external 5 V); and configurable UVLO threshold via ENL resistor divider - directly supporting validation of startup sequencing, transient response, efficiency mapping, and fault recovery behavior.

Key Specifications

Parameter	Value and Actual Design Meaning
Board Type	Evaluation board for SiC403A/B buck regulator ICs - not a standalone IC or discrete component.
Supported ICs	SiC403ACD-T1-GE3 and SiC403BCD-T1-GE3 - validated with PowerPAK® MLP32-55G packaged devices.
Input Voltage Range	3 V to 28 V DC - matches SiC403A/B VIN specification; includes UVLO programming via ENL pin.
Output Capability	0.6 V to VIN × 0.75 at up to 6 A continuous - verified with ceramic output capacitors and 1 MHz max switching frequency.
LDO Support	Configurable 200 mA LDO (VDD output) with bypass option - enables self-biased or externally biased operation per application needs.
Key Validation Features	Power good (PGOOD) open-drain output, soft-start (SS) capacitor interface, tON resistor programming, ILIM current limit setting, and EN/PSV tri-state control.

Availability

SIC403DB is available at Aetrix Electronics and suitable for notebook power delivery, server point-of-load conversion, and networking equipment power architecture validation requiring stable component supply and proven reference design fidelity.

Supply support for SIC403DB 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

Vishay Siliconix is a global leader in discrete semiconductors and integrated power solutions, specializing in high-efficiency, high-density power management ICs for computing, communications, and industrial applications.

The SiC403A/B product line - implemented on SIC403DB - was engineered to deliver compact, high-efficiency DC/DC conversion with integrated MOSFETs and programmable LDO for space-constrained, multi-rail systems requiring fast transient response and flexible biasing.

FAQ

What is the SIC403DB used for?

The SIC403DB is a Vishay-qualified evaluation board for the SiC403A/B synchronous buck regulators. It allows engineers to validate full system behavior - including startup, regulation accuracy, efficiency across load, PGOOD timing, fault responses, and LDO switchover - before committing to custom PCB design. SIC403DB provides complete schematics, layout files, and test reports aligned with Vishay Document Number 62768.

Does the SIC403DB support both SiC403A and SiC403B variants?

Yes, the SIC403DB supports both SiC403A and SiC403B ICs. The board accommodates differences in power-save behavior: SiC403A enables ultrasonic P-Save (≥25 kHz minimum), while SiC403B uses standard P-Save. Jumper and resistor configurations on SIC403DB allow direct comparison of FCM vs. P-Save modes for either variant under identical thermal and layout conditions.

Can the SIC403DB be used to evaluate the integrated LDO function?

Yes. The SIC403DB includes dedicated jumpers and test points to configure the internal 200 mA LDO - enabling evaluation of VDD generation from VIN, LDO bypass with external 5 V, ENL logic control, and VLDO-to-VOUT switchover thresholds (±130 mV). All LDO-related pins (FBL, ENL, VDD, VOUT) are accessible for probing and reconfiguration on SIC403DB.

What documentation and design resources ship with the SIC403DB?

SIC403DB ships with Vishay Application Note S20-0483-Rev. C (Document #62768), full schematic and PCB layout files (Gerber), BOM with manufacturer part numbers, assembly drawings, thermal images, and PowerCAD simulation models. These resources are hosted at www.vishay.com/power-ics/powercad-list/ and referenced directly in the SIC403DB user guide.

Is the SIC403DB RoHS-compliant and lead-free?

Yes, the SIC403DB conforms to Vishay's material categorization per Doc. #99912 and is fully RoHS-compliant and lead-free. All populated components - including the SiC403A/B IC, MLCCs, inductors, and resistors - meet JEDEC J-STD-020 moisture sensitivity and IPC Class 2 assembly standards, as verified in the SIC403DB qualification report.

SIC403DB Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: microBUCK®

Packaging:: Box

Product Status:: Active

Main Purpose:: DC/DC, Step Down with LDO

Outputs and Type:: 2 Non-Isolated Outputs

Voltage - Output:: -

Current - Output:: -

Voltage - Input:: 6A, 200mA

Regulator Topology:: 3V ~ 28V

Frequency - Switching:: Buck

Contents:: -

Utilized IC / Part:: Board(s)

Power - Output:: SiC403

SIC403DB FAQ

1.How can I place an order for SIC403DB through Aetrix?

Please submit a Request for Quotation (RFQ) for SIC403DB 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 SIC403DB reliable?

The price and inventory of SIC403DB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SIC403DB is usually 5 days.

3.What payment methods are accepted for SIC403DB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIC403DB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SIC403DB?

SIC403DB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SIC403DB 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 SIC403DB?

For technical support, including SIC403DB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIC403DB requirements.

6.How does Aetrix verify that SIC403DB is sourced from the original manufacturer or authorized distributors?

All SIC403DB 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 SIC403DB meets industry standards.

7.What is the process for return or replacement of SIC403DB?

All SIC403DB units undergo pre-shipment inspection (PSI). If there is an issue with SIC403DB, 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 SIC403DB part is unused and in its original packaging.

Return procedure for SIC403DB:

1.Submit a request within 90 days.

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

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