AN1695 - APPLICATION NOTE

5/5

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The typical application described previously uses a power MOSFET and a schottky diode integrated in the

same SO8 package, but several options for power semiconductor footprints are available on the PCB in

order to make it adaptable to a wide range of converter output power. The power switch can be replaced

by a MOSFET in TO220 or D2PAK package, but also by a bipolar in TO92 package. The diode can be

replaced by an axial or TO220 package. The various options available on the Evaluation Board are

presented in Table 8 here below.

Table 8 : Power semiconductors options available on the Evaluation Board

Component

Designator

Package

Pinout (topview)

Power Switch

(P-Mosfet)

Q1

TO220

Q3

D2PAK

Q4-B

half SO8

Power Switch

(PNP bipolar)

Q2

TO92

Power Diode

D1

TO220 or axial

Q4-A

half SO8

D

GS

D

G

S

1

2

3

4

5

6

7

8

B

CE

K

A

1

2

3

4

5

6

7

8