ST Life.augmented


Line interactive 450 W UPS reference design - 230 V / 50 Hz model

This UPS reference design was built employing off-line topology with AVR boost and buck regulation of the mains. The inverter module contains the push-pull DC-DC converter and the DC-AC output full bridge generating a quasi-sine waveform.

A microcontroller controls all UPS functions. It monitors the mains parameters (input/output mains voltage and phase, output inverter voltage, battery voltage, output current and output power) in order to ensure the proper level of the output voltage.

The UPS was designed with RS-232 joint signal and USB interfaces (USB for RS-232 converter). It is possible to connect the UPS to a PC using an RS-232 or USB cable and control the UPS status through the "UPS Monitor 3.0x" software that must be installed on the same PC.

pdf Download
Data Brief

Key Features

  • Output rating power: 700 VA / 450 W
  • Input voltage: 160 Vac ± 3% - 294 Vac ± 3%
  • Input frequency: 50 Hz
  • Output voltage: 184 - 265 Vac ± 3 Vac
  • Output frequency: 50 Hz ± 0.1 Hz
  • On battery output waveform: quasi-sine (square wave)
  • Transfer time: Class 3 [EN62040-3]
  • Typical recharge time: 8 h
  • Backup time (full load): 2.5 - 3 min.
  • Battery quantity: 2 pieces
  • Battery nominal voltage: 12 V
  • Battery capacity: 7.2 Ah
  • Battery recharge: two steps
  • Operating temperature: 0 °C to +40 °C
  • Storage temperature: -20 °C to +60 °C
  • Size (H x W x D): 175 mm x 120 mm x 430 mm
  • Weight: 11 kg
  • Shipping weight: 11.5 kg
  • EMI Classification: EN 62040-2


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB0593: Line interactive 450 W UPS reference design - 230 V / 50 Hz model
1.1 107 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
PCB layout
1.0 262 KB

Bill of Materials

Description Version Size
Bill of materials
1.0 51 KB

Schematic Pack

Description Version Size
Board schematic
1.0 208 KB

Related Tools and Software

Related Tools and Software

Part Number Description
STSW-ISS001 Setup for STEVAL-ISS001V1 board

License Agreement

Description Version Size
Evaluation products license agreement
1.0 126 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISS001V2NRNDST72F324BJ6T6Buy Direct282.97Distributor reported inventory date: 2016-02-04
Distributor NameRegionStockMin. order

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on 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.
Feedback Form
Customer Feedback