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參數(shù)資料
| 型號： | UCC1858 |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | High Efficiency, High Power Factor Preregulator |
| 中文描述： | 高效率，高功率因數(shù)前置穩(wěn)壓器 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大小： | 343K |
| 代理商： | UCC1858 |
2
UCC1858
UCC2858
UCC3858
ABSOLUTE MAXIMUM RATINGS
Supply Voltage V
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
Gate Drive Current
Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.2A
Pulsed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mA
Input Current IAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200mA
Power Dissipation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W
Storage Temperature . . . . . . . . . . . . . . . . . . .
65°C to +150°C
Junction Temperature. . . . . . . . . . . . . . . . . . .
55°C to +150°C
Lead Temperature (Soldering, 10 Sec.). . . . . . . . . . . . . +300°C
Analog Inputs
Maximum Forced Voltage . . . . . . . . . . . . . . . . –0.3V to 11V
Unless otherwise indicated, voltages are reference to ground and cur-
rents are positive into, negative out of the specified terminal. Pulsed is
defined as a less than 10% duty cycle with a maximum duration of
500ns. Consult Packaging Section of Databook for thermal limitations
and considerations of packages.
Controller improvements include an onboard peak detec-
tor for the input line RMS voltage, an integrated
overcurrent shutdown, overvoltage shutdown and signifi-
cantly lower quiescent operating current. The peak de-
tector eliminates an external 2-pole low pass filter for
RMS detection. This simplifies the converter design as
well as providing an approximate 6X improvement in in-
put line transient response. The current signal is ex-
tracted from the current error amplifier input to provide a
cycle-by-cycle peak current limit. Low startup and oper-
ating currents which are achieved through the use of
Unitrode’s BCDMOS process simplify the bootstrap
supply design as well as minimize losses in the control
circuit. A transconductance voltage error amplifier allows
output voltage sensing for internal overvoltage protection.
Additional features include: undervoltage lockout for reli-
able off-line startup, a precision 7.5V reference, and a
precision RMS detection and signal conditioning circuit.
Chip shutdown can be attained by bringing the FBL pin
below 0.5V.
DESCRIPTION (cont.)
ELECTRICAL CHARACTERISTICS:
Unless otherwise stated, these specifications apply for T
A
= 0°C to 70°C for the
UCC3858, –40°C to +85°C for the UCC2858, and –55°C to +150°C for the UCC1858, V
VDD
= 12V, R
T
= 24k, C
T
= 330pF, R
FBM
=
96k, I
IAC
= 100
μ
A, T
A
= T
J
.
PARAMETER
TEST CONDITIONS
Overall
Supply Current, Off
V
CAO
, V
VAO
= 0V, V
DD
= UVLO – 0.3V
Supply Current, On
FBL = 0V
VDD Turn-On Threshold
VDD Turn-Off Threshold
UVLO Hysteresis
Voltage Amplifier
Input Voltage
T
A
= 25°C
Over Voltage Protection
Volts Above VA– Input Voltage
VA– Bias Current
Open Loop Gain
V
OUT
= 2V to 5V
VAO High
Load = –25
μ
A
VAO Low
Load = 25
μ
A
Output Source Current
V
VA
– = 2.8V
Output Sink Current
V
VA
– = 3.2V
Transconductance
I
OUT
=
±
50
μ
A
MIN
TYP
MAX
UNITS
100
3.5
13.5
10
3.5
250
5
15.5
μ
A
mA
V
V
V
2
12
3.2
3.8
2.95
0.12
3
3.05
0.16
–1
V
V
μ
A
dB
V
V
μ
A
μ
A
μ
S
0.14
–0.5
50
6
0.3
45
5.7
6.3
0.5
–50
50
400
600
1000
VDD
OUT
GND
RT
CT
SYNC
FBM
FBL
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CRMS
IAC
VAO
CAO
VA–
MOUT
VREF
CA–
CONNECTION DIAGRAM
DIP-16, SOIC-16 (TOP VIEW)
J, N, DW Packages
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| UCC1858J | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Power Factor Controller |
| UCC1858N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| UCC1883J | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller |
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