TEA1520 Philips Semiconductors, TEA1520 Datasheet - Page 7

• Manufacturer Part Number: TEA1520
• Description: STARplug
• Manufacturer: Philips Semiconductors

Philips Semiconductors
2000 Sep 08
handbook, full pagewidth
STARplug
A: Start of new cycle with valley switching.
B: Start of new cycle in a classical PWM system.
TM
Fig.6 Typical phase of drain ringing at switch-on (at N
secondary
oscillator
stroke
valley
drain
RC
handbook, halfpage
phase
( )
primary
40
20
20
40
stroke
0
0
Fig.5 Signals for valley switching.
regulation level
secondary
200
stroke
400
7
600
secondary
ringing
f (kHz)
MGT424
B
800
V
MGT423
o
A
= 80 V).
TEA152x family
Product specification