DocID025572 Rev 1

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AN4407

Description

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1

Description

The aim of the following paper is to illustrate the analysis evaluating the performance of the

STMicroelectronicsMDmeshM5 super-junction MOSFET housed in a TO-2474-lead

package with an additional driving pin.

The new electrical symbol and package are shown in Figure 1. Note the repositioned drain,

source and gate pins to allow the introduction of the Kelvin pin (pin 3), always ensuring the

right creepage distance.

Figure 1. Package silhouette and electrical symbol (4 pin)

A demonstration power board (Figure 2) was created for test purposes, which implements a

2 kW PFC designed for industrial applications, using a FOT (Fixed-Off-Time) control

patented by ST. The PFC stage functions mainly in CCM and can be supplied directly from

system was chosen because it allows investigation of the parasitic effect on the switching

system. Furthermore, the working CCM properties allow investigation of both the on and off

switching operations. Table 1shows the principal electrical specifications.

Table 1. Electrical characteristics

Parameter

Value

Line frequency

50 Hz

Output voltage

Max output voltage

2000 W

Output voltage ripple

5%

Max switching frequency

55 kHz

Ripple (Kr) inductor current

0.25

IC in used

L6563

Drain(1)

Gate(4)

Driver

source(3)

Power

source(2)

TO247-4

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GIPG211120131627FSR