Auxiliary power source

ИВЭ-1 auxiliary power source

Modern electronic equipment consists of many functional blocks requiring several supply voltages, electrically isolated from the primary source and from one another. These voltages are produced by an auxiliary power source, also called a control power supply or a secondary supply for internal needs.

Purpose:

The ИВЭ-1 auxiliary power source is designed to produce alternating voltage at 100 kHz. Subsequent transformation and filtering of this higher-frequency voltage makes it possible to reduce substantially the mass and dimensions of power supplies for low-voltage, low-power circuits with galvanically isolated voltage. The unit also has 12 V and 24 V DC outputs.

Technical specifications:

• Total continuous output of the source — 200 W
• Conversion efficiency at 200 W output — better than 95%
• Output voltage adjustment range, Unom ± 5%
• Supply voltage range on input XS1:
  
  • from a DC source of (200 ... 430) V
  • from a 50 Hz AC source at 220 V ± 30%
  Input XS1 is the main supply input and is protected by a fuse
• on input XS2:
  
  • from a 50 Hz AC source at 220 V ± 30%
  Input XS2 provides backup supply from the public grid. If the sources on inputs XS1 and XS2 must be galvanically isolated, the voltage to XS2 should be fed through a 220/220 V, 50 Hz, 200 W isolating transformer
• Output No. 1, connectors XS4 – XS10 (equivalent):
  
  • Nominal AC output voltage at 100 kHz: 90 V
  • Output waveform — bipolar rectangular pulses with a 50% duty cycle.
  • Output voltage duty cycle 50%
  • Maximum total continuous output power on output No. 1 with no load on outputs No. 2 and No. 3 — 200 W
  Outputs XS4 – XS10 are the main outputs and are fuse-protected
• Outputs No. 2 and No. 3, connectors XS3, XS11:
  
  • Nominal DC output voltage on output No. 2: 12 V, 24 V
  • Nominal DC output voltage on output No. 3 — 24 V
  • Total maximum load current on outputs No. 2 and No. 3 — 2.5 A
• Protection threshold on output overvoltage (the source shuts down): no more than 20% above nominal
• The ИВЭ-1 has galvanic isolation between input and output.
• The ИВЭ-1 wiring diagram is shown in Figure 3 of the datasheet
• The converter is supplied as a printed circuit board
• The overall and mounting dimensions of the ИВЭ-1 are given in Figure 2 of the datasheet
• Converter weight — no more than 1.0 kg
• Mounting position – horizontal
• The converter is built to climatic category У, placement category 3.1 per ДСТУ ГОСТ 15150-69, and is designed to operate at temperatures from -25°C to +55°C, relative humidity up to 80% and atmospheric pressure from 650 to 800 mm Hg
• The converter is intended for operation in a non-explosive atmosphere, free of gases and vapours in concentrations that attack metal and insulation, and free of saturated water vapour and conductive dust
• Permissible vibration: 1 to 35 Hz at an acceleration of 4 m/s²
• Order designation: ИВЭ-1 auxiliary power source

Datasheet for the ИВЭ-1 auxiliary power source