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STMicroelectronics STEVAL-ISA182V1

Name: STEVAL-ISA182V1
Brand: STMicroelectronics
SKU: STEVAL-ISA182V1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STEVAL-ISA182V1

Manufacturer:: STMicroelectronics

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

Package:

Datasheet:: STEVAL-ISA182V1.pdf

Description:: EVAL BOARD FOR VIPER38

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,523

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Product details

Overview

STEVAL-ISA182V1 from STMicroelectronics is an evaluation board implementing an isolated 8.4 W (30 W peak) offline flyback converter using the VIPER38HD IC, delivering 12 V / 0.7 A (2.5 A peak) from 85–132 VAC input. It features 81.14% minimum active-mode efficiency, <25 mW standby consumption at 115 VAC, EN55022 Class-B EMI compliance, and burst-mode operation for ultra-low no-load loss - designed specifically for utility metering applications.

For engineers reviewing the STEVAL-ISA182V1 datasheet, STEVAL-ISA182V1 pinout, STEVAL-ISA182V1 application, or STEVAL-ISA182V1 equivalent, key selection considerations include its integrated VIPER38HD controller with 800 V MOSFET, adjustable extra power timer (EPT), fixed 115 kHz switching frequency with jittering, dual-level OCP, and thermal shutdown with hysteresis.

Technical Context

The STEVAL-ISA182V1 implements a primary-side regulated, current-mode controlled flyback topology with VIPER38HD as the core controller. The IC integrates an 800 V avalanche-rated power MOSFET, operates at fixed 115 kHz with frequency jittering to reduce EMI peaks, and uses burst mode below light load to achieve <25 mW standby consumption.

Protection architecture includes dual-level overcurrent protection (OCP), output overvoltage protection (OVP), short-circuit protection, and thermal shutdown with hysteresis. After fault removal, automatic restart occurs without external intervention - critical for unattended metering deployments.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	85–132 VAC, 50–60 Hz - supports US mains grid standard for metering installations.
Output Power	8.4 W continuous / 30 W peak - enables handling of transient surges in smart meter auxiliary circuits.
Output Regulation	12 V ±5% / 0.7 A continuous (2.5 A peak) - meets power rail requirements for microcontroller, RTC, and communication modules.
Efficiency	≥81.14% at full load; ≥71.14% at 10% load - ensures thermal stability and energy compliance in sealed meter enclosures.
Standby Consumption	<25 mW at 115 VAC - satisfies IEC 62301 Ed.2 low-power standby requirements for utility meters.
EMI Compliance	EN55022 Class-B - validated for residential and commercial metering environments without additional filtering.

Availability

STEVAL-ISA182V1 is available at Aetrix Electronics and suitable for smart electricity metering, industrial energy monitoring systems, and DIN-rail mounted power supply modules requiring stable component supply, rapid prototyping validation, and regulatory-compliant reference designs.

Supply support for STEVAL-ISA182V1 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, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog/mixed-signal devices for industrial, automotive, and consumer applications.

This evaluation board belongs to ST's STEVAL (ST Evaluation) series, developed to accelerate design-in of ST's VIPerPlus offline AC-DC converters in metering, IoT edge nodes, and low-power industrial power supplies.

FAQ

Is STEVAL-ISA182V1 certified for use in revenue-grade electricity meters?

No - STEVAL-ISA182V1 is a development tool, not a certified metering module. It implements a reference design compliant with EN55022 Class-B EMI and low standby power, but final meter certification (e.g., MID, ANSI C12, IEC 62053) requires full system-level testing, including accuracy, isolation, and environmental validation beyond this board's scope.

Can the output voltage be adjusted to 5 V or 24 V?

Yes - output voltage is set by the feedback resistor divider (R8, R9, REF TS432) and transformer turns ratio. To change to 5 V or 24 V, reconfigure the feedback network per TS432's 2.5 V reference and adjust T1's secondary winding; however, peak power capability and regulation stability must be re-validated across line/load/temperature per IEC 61347-2-13.

Does STEVAL-ISA182V1 support universal input (90–264 VAC)?

No - it is optimized for 85–132 VAC (US nominal range). Operating at 230 VAC would exceed VIPER38HD's internal clamp voltage margin and compromise reliability. ST offers alternate boards like STEVAL-ISA171V1 for 185–264 VAC or universal-input variants using VIPER27LD.

What is the role of the Extra Power Timer (EPT) on this board?

The EPT pin (IC1 Pin 5) configures a programmable overload timer that allows sustained 30 W peak output for up to ~3 seconds during inrush or motor-start events. It is implemented via external capacitor C8 (33 nF), setting timeout per VIPER38HD's datasheet equation t_EPT = 1.1 × C_EPT × 10⁶ seconds.

STEVAL-ISA182V1 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: VIPer™ plus

Packaging:: Bulk

Product Status:: Active

Main Purpose:: AC/DC, Primary Side

Outputs and Type:: 1 Isolated Output

Voltage - Output:: 8.4 W

Current - Output:: 12V

Voltage - Input:: 700mA

Regulator Topology:: 85 ~ 132 VAC

Frequency - Switching:: Flyback

Contents:: 115kHz

Utilized IC / Part:: Board(s)

Power - Output:: VIPer38

STEVAL-ISA182V1 FAQ

1.How can I place an order for STEVAL-ISA182V1 through Aetrix?

Please submit a Request for Quotation (RFQ) for STEVAL-ISA182V1 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-ISA182V1 reliable?

The price and inventory of STEVAL-ISA182V1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-ISA182V1 is usually 5 days.

3.What payment methods are accepted for STEVAL-ISA182V1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-ISA182V1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STEVAL-ISA182V1?

STEVAL-ISA182V1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STEVAL-ISA182V1 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-ISA182V1?

For technical support, including STEVAL-ISA182V1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-ISA182V1 requirements.

6.How does Aetrix verify that STEVAL-ISA182V1 is sourced from the original manufacturer or authorized distributors?

All STEVAL-ISA182V1 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-ISA182V1 meets industry standards.

7.What is the process for return or replacement of STEVAL-ISA182V1?

All STEVAL-ISA182V1 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-ISA182V1, 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-ISA182V1 part is unused and in its original packaging.

Return procedure for STEVAL-ISA182V1:

1.Submit a request within 90 days.

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

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