Vishay Siliconix SIC467EVB-D

Overview

SIC467EVB-D from Vishay Siliconix is a reference evaluation board designed to demonstrate and validate the SiC467 6 A synchronous buck DC/DC converter in its MLP55-27L package. It supports 4.5 V to 60 V input, delivers adjustable 0.8 V to 15 V output, operates up to 2 MHz, and enables rapid prototyping of industrial, telecom, and computing power supplies.

For engineers reviewing the SIC467EVB-D datasheet, SIC467EVB-D application, SIC467EVB-D pinout, or SIC467EVB-D equivalent, this board provides verified layout, thermal performance, and functional validation for the SiC467 microBUCK® regulator - including soft-start tuning, current limit configuration, power-good monitoring, and mode-select operation under real load transients.

Technical Context

The SIC467EVB-D implements the SiC467 IC in a fully assembled, tested PCB layout optimized for low-noise measurement and thermal management. It integrates all required external components - including input/output capacitors, bootstrap network, feedback divider, soft-start capacitor, and mode/frequency/resistor networks - to showcase stable operation across 4.5–60 V input and 0.8–15 V output with up to 6 A continuous load.

This board validates the SiC467's voltage-mode constant-on-time (COT) control architecture, internal compensation, zero-crossing detection for diode emulation, and full protection suite (OCP, OVP, UVP, OTP, PGOOD). It supports pre-bias start-up, output voltage tracking, and programmable soft-start via on-board jumpers and test points.

Key Specifications

Availability

SIC467EVB-D is available at Aetrix Electronics and suitable for industrial automation, telecom power supply development, and server computing applications requiring stable component supply, fast design iteration, and production-ready validation data.

Supply support for SIC467EVB-D 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 passive components, specializing in high-efficiency power management solutions with emphasis on reliability, thermal performance, and integration density.

The SiC46x family - including the SiC467 used on SIC467EVB-D - was engineered for wide-input-voltage, high-current point-of-load regulation in space-constrained industrial, networking, and computing systems where efficiency, transient response, and robust protection are critical.

FAQ

What is the primary function of the SIC467EVB-D evaluation board?

The SIC467EVB-D evaluation board is a fully assembled reference design that demonstrates the operational behavior, layout best practices, and performance envelope of the SiC467 6 A synchronous buck regulator. It enables engineers to validate input/output stability, thermal performance, transient response, and protection features - such as OCP, OVP, and PGOOD - without designing a custom PCB. The board directly supports the SIC467ED-T1-GE3 IC and is documented in Vishay's S25-1437 Rev. J datasheet.

Does the SIC467EVB-D support adjustable output voltage and frequency?

Yes, the SIC467EVB-D supports fully adjustable output voltage (0.8 V to 15 V) via external resistor divider on the VFB pin, and configurable switching frequency (100 kHz to 2 MHz) using the on-board R_fSW resistor network. The board includes test points and solder jumpers to modify both parameters without component replacement, enabling rapid optimization of efficiency, ripple, and EMI for target applications. These configurations are implemented per the SiC467's internal COT control architecture.

How does the SIC467EVB-D implement current limit selection and power-save mode?

The SIC467EVB-D provides jumper-selectable current limit settings (50%, 75%, or 100% of SiC467's rated 6 A valley current limit) by routing the ILIMIT pin to AGND, float, or VDD. It also supports all four operation modes (power save enabled/disabled, internal VDRV regulator on/off) via an on-board R_MODE resistor network and test point access. This allows direct validation of light-load efficiency improvements and thermal trade-offs inherent to the SiC467's adaptive zero-crossing detection and diode emulation.

Can the SIC467EVB-D be used for pre-bias start-up and output voltage sequencing?

Yes, the SIC467EVB-D is configured to support pre-bias start-up - preventing negative voltage spikes when powering into an already-biased rail - and output voltage tracking/sequencing via the SS and MODE pins. The board includes dedicated test points and optional components (e.g., external ramp sources) to verify proper startup behavior under pre-bias conditions and coordinated multi-rail sequencing, as specified in the SiC467's operational description and Fig. 7 of the datasheet.

Is thermal performance data and layout guidance included with the SIC467EVB-D?

Yes, the SIC467EVB-D incorporates Vishay-recommended thermal pad layout, copper pour strategies, and component placement aligned with the MLP55-27L package's thermal requirements. Thermal imaging data, temperature rise measurements under 6 A load, and recommended PCB stack-up details are provided in the S25-1437 datasheet Appendix and associated PowerCAD simulation reports. This enables accurate thermal modeling and ensures reliable operation up to +125 °C junction temperature - a key specification validated on the SIC467EVB-D.