Boost converter

Block appearance in REPEAT VISION

 The Boost converter block is a converter which increases DC voltage controlled by the pulse generator. Step-up converters are also known as step-up voltage controllers because they increase the voltage magnitude, Fig. 1:

Fig. 1 Boost converter

 This block contains two semiconductors, a diode and a controlled key, an inductor and a condenser to store energy (see Fig. 2 below). The basic principle of operation is the property of the inductor to resist current change. When the controlled switch is closed, the inductor stores energy generating a magnetic field. When the switch is opened, the inductor current will be directed towards the diode and will be summed from the source current. The condenser will store charge up to the steady-state voltage while the switch is opened. It will also support it when it opens. Thus, if the switch is turned quickly enough, the voltage will be maintained at the required level.

Fig. 2 Two configurations of the Boost converter circuit

 The controlled key role is performed by an IGBT/Diode pair key, where direct voltages of the forcibly switched device and diode are neglected.

Note

The block consists of two left inputs for the source, two right inputs for the load, and a block control input.

1.  Properties

Property	Default value	Description	Units of measurement
Resistance	10.0	-	Ohm
Inductance	1.0e-4	-	H
Initial current	0.0	-	A
Internal resistance	0.01	-	Ohm
Forward voltage	0.5	-	V
Diode close state resistance	1.0e10	-	Ohm
Diode snubber circuit	On	-	-
Diode snubber capacitance	1.0e-6	Available, when Diode snubber circuit - On	F
Diode snubber resistance	1000000.0	Available, when Diode snubber circuit - On	Ohm
Open state resistance	0.001	-	Ohm
Close state resistance	1.0e8	-	Ohm
Switch snubber circuit	On	-	-
Switch snubber capacitance	1.0e-6	Available, when Switch snubber circuit - On	F
Switch snubber resistance	1000000.0	Available, when Switch snubber circuit - On	Ohm
Capacitance	5.0e-5	-	F
Initial voltage	10.0	-	V

2.  Inputs and outputs

Parameters	Input/Output	Description	Units of measurement	Port type
Control input	Input	-	-	Automation
1+	Input	-	-	Electronics
1-	Input	-	-	Electronics
2+	Output	-	-	Electronics
2-	Output	-	-	Electronics

In order to see the connection capabilities of the block, you need to go to page Description of block ports