參數(shù)資料
型號: L6585DE
廠商: STMICROELECTRONICS
元件分類: 穩(wěn)壓器
英文描述: POWER FACTOR CONTROLLER, PDSO20
封裝: ROHS COMPLIANT, SOP-20
文件頁數(shù): 13/33頁
文件大?。?/td> 2064K
代理商: L6585DE
Ballast section
L6585DE
20/33
The oscillator characteristic curves represent the half bridge frequency versus the
resistance R placed between RF pin and ground. During preheating R is equal to RRUN in
parallel with RPRE whereas during Run mode R is equal to RRUN. Each curve is related to a
value of the COSC capacitor and are depicted in Figure 10.
The value of COSC is measured between pin 1 (OSC) and 15 (GND); for other capacitor
values please refer to AN2870.
The right value of R during preheating and run mode can be found graphically considering
the curve related with the chosen capacitor and respectively FPRE and FRUN
Figure 10.
Oscillator characteristics
Some useful equations are given:
IGN
PRE
IGN
d
CH
Tch
PRE
C
R
3
T
5
.
1
63
.
4
ln
C
R
C
I
63
.
4
T
+
=
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