STEVAL-ISA125V1

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Design Win

5 V/10 W, 60 kHz isolated flyback with extra power management based on the VIPer28L

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Product overview

Description

The STEVAL-ISA125V1 is a 5 V, 2 A demonstration application with 3.3 A peak current capability of 1.9 sec, using the new VIPer28LN offline high-voltage converter from STMicroelectronics.

In some applications, an SMPS can have load peaks which may be two or more times as high as the power it is supposed to deliver, though only for a short time compared to the thermal time constants of the power components. Typical examples of such loads include printers and audio systems.

In such cases, it is more cost-effective to thermally design the system for maximum continuous power and not for peak power demand, which is sustained only for a limited time.

Such a design is possible thanks to the EPT function of the VIPer28LN, which allows designers to fix the maximum time window during which the converter is able to manage the peak power and still maintain output voltage regulation. If the overload period exceeds the time window, the converter is automatically shut down and enters auto-restart mode until the overload is removed, thus preventing damage to the power components.

  • All features

    • Input voltage range: 90 VRMS - 265 VRMS
    • Output voltage: 5 V
    • Max output current: IOUTmax = 2 A
    • Peak output current: IOUTpk = 3 A
    • Precision of output regulation: ΔVOUT_LF±5%
    • High frequency output voltage ripple: ΔVOUT_HF= 50 mV
    • Max ambient operating temperature: TA= 60 ºC
    • 800 V avalanche-rugged power section
    • PWM operation at 60 kHz with frequency jittering for lower EMI
    • Limiting current with adjustable set point
    • On-board soft-start
    • Safe auto-restart after a fault condition; low standby power (< 50 mW at 265 Vac).
    • Adjustable, accurate overvoltage protection, thermal shutdown with hysteresis, delayed overload protection

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-ISA125V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA125V1

Package:

CARD

Material Declaration**:

Marketing Status

Active

Package

CARD

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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STEVAL-ISA125V1 Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
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ECCN (EU):

Part Number:

STEVAL-ISA125V1

Supplier:

-

Core Product:

VIPER28LN

Board production status:

-

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors