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參數(shù)資料
| 型號(hào)： | UCC18502 |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | BiCMOS PFC/PWM Combination Controller |
| 中文描述： | 的BiCMOS PFC / PWM組合控制器 |
| 文件頁(yè)數(shù)： | 2/8頁(yè) |
| 文件大?。?/td> | 91K |
| 代理商： | UCC18502 |
2
UCC18500/1/2/3
UCC28500/1/2/3
UCC38500/1/2/3
DIL-20, SOIC-20 (TOP VIEW)
N, DW and J Packages
ABSOLUTE MAXIMUM RATINGS
Supply Voltage V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
Gate Drive Current
Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.2A
50% Duty Cycle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A
Input Voltage
I
SENSE1
, I
SENSE2
MOUT,V
SENSE,
OVP, ENBL, . . . . . . . . 11V
PKLMT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V
Input Current, R
SET
, I
AC
, PKLMT, ENA . . . . . . . . . . . . . . 10mA
Maximum Negative Voltage, GT1, GT2,
PKLMT, MOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5V
Power Dissipation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W
Currents are positive into, negative out of the specified termi-
nal. Consult Packaging Section of Databook for thermal limita-
tions and considerations of packages. All voltages are
referenced to GND.
IAC
VFF
VREF
MOUT
ISENSE1
PKLMT
CAOUT
SS2
RT
VAOUT
ISENSE2
GND
VERR
VSENSE
OVP/ENA
CT
GT2
VCC
GT1
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
PWRGND
CONNECTION DIAGRAMS
UCC
850
ORDERING INFORMATION
TEMPERATURE RANGE
PRODUCT OPTION
UVLO2 HYSTERESIS
PACKAGE
UVLO
16
10.5
16
10.5
16
10.5
16
10.5
16
10.5
16
10.5
UCC18500
UCC18501
UCC18502
UCC18503
UCC28500
UCC28501
UCC28502
UCC28503
UCC38500
UCC38501
UCC38502
UCC38503
1.2
1.2
3.0
3.0
1.2
1.2
3.0
3.0
1.2
1.2
3.0
3.0
–55
°
C to +125
°
C
J-CDIP
N-PDIP
DW-SOIC
N-PDIP
DW-SOIC
–40
°
C to +85
°
C
0
°
C to +70
°
C
PACKAGE INFORMATION
The UCC18500 PFC section incorporates a low offset
voltage amplifier with 7.5V reference, a highly linear mul-
tiplier capable of a wide current range, a high bandwidth,
low offset current amplifier, with a novel noise attenuation
configuration, PWM comparator and latch and a high cur-
rent output driver. Additional PFC features include
over-voltage protection, zero power detection to turn-off
the output when VAOUT is below 0.25V and peak current
and power limiting.
The DC-to-DC section relies on an error signal generated
on secondary-side and processes it by performing peak
current mode control. The DC-to-DC section also fea-
tures current limiting, a controlled soft-start, preset oper-
ating range with selectable options, and 50% maximum
duty cycle.
The UCC38500 and UCC38502 have a wide PFC-UVLO
threshold (16.5V/10V) for bootstrap bias supply opera-
tion. The UCC38501 and UCC38503 are designed with a
narrow UVLO range (10.5V/10V) more suitable for fixed
bias operation. The UCC38500 and UCC38501 have a
narrow UVLO threshold for PWM stage (to allow opera-
tion down to 75% of nominal bulk voltage), while the
UCC38502 and UCC38503 are configured for a much
wider operation range for the PWM stage (down to 50%
of bulk nominal voltage).
DESCRIPTION (cont.)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UCC18503 | BiCMOS PFC/PWM Combination Controller |
| UCC28502 | BiCMOS PFC/PWM Combination Controller |
| UCC1858 | High Efficiency, High Power Factor Preregulator |
| UCC1884 | Frequency Foldback Current Mode PWM Controller |
| UCC2884 | Frequency Foldback Current Mode PWM Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC18503 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:BiCMOS PFC/PWM Combination Controller |
| UCC1857 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Isolated Boost PFC Preregulator Controller |
| UCC1858 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:High Efficiency, High Power Factor Preregulator |
| UCC1858DW | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Power Factor Controller |
| UCC1858DWTR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Power Factor Controller |
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