參數(shù)資料
型號(hào)： UCC28510-17
廠商： Texas Instruments, Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： ADVANCED PFC/PWW COMBINATION CONTROLLER WITH TRAILING-EDGE/TRAILING-EDGE MODULATION
中文描述： 高級(jí)式PFC / PWW組合控制器，TRAILING-EDGE/TRAILING-EDGE調(diào)制
文件頁(yè)數(shù)： 8/39頁(yè)
文件大小： 725K
代理商： UCC28510-17
SLUS517B DECEMBER 2002 REVISED AUGUST 2004
8
www.ti.com
BLOCK DIAGRAM
VREF
20
14
12
11
9
17
16
GT1
PWRGND
ISENSE1
VCC
VAOUT
1.9 V
PKLMT
7.5 V
REFERENCE
UVLO
16 V, 9.7 V
10.2 V, 9.7 V
VCC
15
Q
S
CAOUT
SS2
ERROR AMP
8.0 V
13
1
3
VSENSE
VFF
19
IAC
18
MOUT
MIRROR
2:1
7.5 V
ENABLE
PFCOVP
÷
X
X
MULT
CLK1
CURRENT
AMP
6.75 V
GND
10
GT2
VCC
8
CLK2
1.5 V
1.3 V
R
ILIMIT
VERR
ISENSE2
ILIMIT
S
Q
UVLO2
+
0.33 V
(VFF2
ZERO
POWER
PWM STAGE
SOFT START
PWM
+
+
+
+
+
7
6
OSC
CLK2
CLK1
+
+
PWM
+
+
PFC
CLK1
CLK2
2
RT
+
D_MAX
4
CT_BUFF
5
D_MAX
COMP
3 V
+
R
R
R
PWM
PFC
PWM
PFC
IRT
PFC:PWM
Frequency
1:1 = IRT
1:2 = 0.5IRT
1x:2x Option Only
DETAILED PIN DESCRIPTIONS
CAOUT (Pin 15):
This is the output of a wide-bandwidth operational amplifier that senses line current and
commands the PFC stage PWM comparator to force the correct duty cycle. This output can swing close to GND
to command maximum duty cycle, and above the PFC ramp peak voltage to force zero duty cycle when
necessary. Connect current loop compensation components between CAOUT and MOUT.
CT_BUFF (Pin 5):
The 4-V amplitude oscillator ramp is internally buffered at this pin to allow a resistor to be
connected directly from this pin to ISENSE2 for slope compensation. The internal buffer can drive a typical
500-
μ
A resistive load at this pin.
D_MAX (Pin 4):
Program the maximum duty cycle at GT2 by applying a dc voltage to this pin. Between 0.09
and 0.90, the maximum duty ratio is linearly related to D_MAX. Usually, this voltage is set with a precision
resistor divider powered by VREF. A first order approximation, with the CT_BUFF frequency near 200 kHz, is
estimated by:
D
MAX
V
DX
1 V
4 V
where, D
MAX
is a dimensionless ratio
V
DX
is the voltage at D_MAX in volts
相關(guān)PDF資料
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UCC38517 ADVANCED PFC/PWM COMBINA CONTROLLERS
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UCC2882 Average Current Mode Synchronous Controller With 5-Bit DAC
UCC2882- Average Current Mode Synchronous Controller With 5-Bit DAC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UCC28510DW 功能描述:功率因數(shù)校正 IC Advanced PFC/PWM Comb Controller 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
UCC28510DWG4 功能描述:功率因數(shù)校正 IC Advanced PFC/PWM Comb Controller 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
UCC28510DWR 功能描述:功率因數(shù)校正 IC Advanced PFC/PWM Comb Controller 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
UCC28510DWRG4 功能描述:功率因數(shù)校正 IC Advanced PFC/PWM Comb Controller 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
UCC28510N 功能描述:功率因數(shù)校正 IC Advanced PFC/PWM Comb Controller 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
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