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參數(shù)資料
| 型號： | ML4803IX-X |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | CAPACITOR, 10UF 10VCAPACITOR, 10UF 10V; Capacitance:10uF; Voltage rating, DC:10V; Capacitor dielectric type:; Series:SVP; Temp, op. max:105(degree C); Temp, op. min:-55(degree C); Tolerance, +:20%; Tolerance, -:20%; Current, ripple |
| 中文描述： | 8引腳PFC和PWM組合控制器 |
| 文件頁數(shù)： | 10/13頁 |
| 文件大?。?/td> | 195K |
| 代理商： | ML4803IX-X |
ML4803
10
February 1999
inductor. The V
CC
OVP comparator senses when this
voltage exceeds 16V, and terminates the PFC output drive
while disabling the VEAO current sink. Once the VEAO
current sink is disabled, the VEAO voltage will charge
unabated, except for a diode clamp to V
CC
, reducing the
PFC pulse width. Once the V
CC
rail has decreased to
below 16.2V the VEAO sink will be enabled, discharging
external VEAO compensation components until the steady
state voltage is reached. Given that 15V on V
CC
corresponds to 400V on the PFC output, 16V on V
CC
corresponds to an OVP level of 426V.
COMPONENT REDUCTION
Components associated with the V
RMS
and I
RMS
pins of a
typical PFC controller such as the ML4824 have been
eliminated. The PFC power limit and bandwidth does vary
with line voltage. Double the power can be delivered from
a 220 V AC line versus a 110 V AC line. Since this is a
combination PFC/PWM, the power to the load is limited
by the PWM stage.
Figure 11. ML4803 PFC Control
Figure 10. Typical Peak Current Mode Waveforms
TYPICAL APPLICATIONS
(Continued)
VISENSE
VC1 RAMP
GATE
DRIVE
OUTPUT
CZERO
ISENSE
VC1
5V
VI SENSE
GATE
OUTPUT
RCOMP
RP
VOUT = 400V
VEAO
35μA
R1
4
+
COMP
–
–
4
3
CCOMP
C1
30pF
相關PDF資料 |
PDF描述 |
|---|---|
| ML4803CX-X | 8-Pin PFC and PWM Controller Combo |
| ML4803CP1 | 8-Pin PFC and PWM Controller Combo |
| ML4824IS-1 | Power Factor Correction and PWM Controller Combo |
| ML4824IS-2 | Power Factor Correction and PWM Controller Combo |
| ML4824CS1 | Power Factor Correction and PWM Controller Combo |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ML4804 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Power Factor Correction and PWM Controller Combo |
| ML4804CP | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Power Factor Correction and PWM Controller Combo |
| ML4804CS | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Power Factor Correction and PWM Controller Combo |
| ML4804IP | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Power Factor Correction and PWM Controller Combo |
| ML4804IS | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Power Factor Correction and PWM Controller Combo |
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