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ALTAIR04-900 Arkusz danych(PDF) 21 Page - STMicroelectronics

Numer części ALTAIR04-900
Szczegółowy opis  Off-line all-primary-sensing switching regulator
PDF  29 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ALTAIR04-900 Arkusz danych(HTML) 21 Page - STMicroelectronics

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ALTAIR04-900
Application information
Doc ID 18211 Rev 2
21/29
5.10
Layout recommendations
A proper printed circuit board layout is essential for correct operation of any switch-mode
converter and this is true for the ALTAIR04-900 as well. Careful component placing, correct
traces routing, appropriate traces widths and compliance with isolation distances are the
major issues. In particular:
●
The compensation network should be connected as close as possible to the COMP
pin, maintaining the trace for the GND as short as possible
●
Signal Ground should be routed separately from power ground, as well from the sense
resistor trace.
Figure 19.
Suggested routing for converter
 
AC IN
OUT
GND
COMP
SOURCE
DRAIN
VDD
IREF
GND
FB/ZCD
ALTAIR04-900
AC IN



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