參數(shù)資料
型號(hào)： ML4803CP-1
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 8-Pin PFC and PWM Controller Combo
中文描述： 1 A POWER FACTOR CONTROLLER WITH POST REGULATOR, 67 kHz SWITCHING FREQ-MAX, PDIP8
封裝： PLASTIC, DIP-8
文件頁(yè)數(shù)： 10/13頁(yè)
文件大?。?/td> 195K
代理商： ML4803CP-1
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(guān)PDF資料
PDF描述
ML4803IP-2 8-Pin PFC and PWM Controller Combo
ML4803IP-1 8-Pin PFC and PWM Controller Combo
ML4803IS-2 8-Pin PFC and PWM Controller Combo
ML4803IS-1 8-Pin PFC and PWM Controller Combo
ML4803CS-2 INDICATOR, T1, SQUARE; Voltage, supply:72V dc; Lamp fitting type:Bi-Pin; Current rating:1A; Diameter, panel cut-out:8mm; Depth, external:25mm; Length / Height, external:9mm; Temp, op. max:45(degree C); Temp, op. min:-25(degree C); RoHS Compliant: Yes
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ML4803CP2 功能描述:功率因數(shù)校正 IC PFC Controller PWM Combo RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
ML4803CP-2 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:8-Pin PFC and PWM Controller Combo
ML4803CS1 功能描述:功率因數(shù)校正 IC PFC Controller PWM Combo RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
ML4803CS-1 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:8-Pin PFC and PWM Controller Combo
ML4803CS1X 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 PFC Controller PWM Combo RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
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