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参数资料
| 型号： | V62/04752-01XE |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 3 A SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封装： | GREEN, PLASTIC, SOIC-28 |
| 文件页数： | 11/15页 |
| 文件大小： | 389K |
| 代理商： | V62/04752-01XE |
UC2875EP
PHASE SHIFT RESONANT CONTROLLER
SGLS233A FEBRUARY 2004 REVISED DECEMBER 2008
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics, TA = 25_C to 110_C, VC = VIN = 12 V, RFREQSET = 12 kW, CFREQSET = 330 pF,
RSLOPE = 12 kW, CRAMP = 200 pF, CDELAYSET AB = CDELAYSET CD = 0.01 mF,
IDELAYSET AB = IDELAYSET CD = 500 mA, and TA = TJ (unless otherwise stated)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
PWM Comparator
Ramp offset voltage
TJ = 25_C,
See Note 3
1.3
V
Zero phase shift voltage
See Note 4
0.55
0.9
V
PWM phase shift (See Note 1)
VE/AOUT > (Ramp Peak + Ramp Offset)
98
99.5
102
%
PWM phase shift (See Note 1)
VE/AOUT < Zero Phase Shift Voltage
0
0.5
2
%
Output Skew (See Note 1)
VE/AOUT < 1 V
5
±20
ns
Ramp to output delay
See Note 6
65
125
ns
Oscillator
Initial accuracy
TJ = 25_C
0.85
1
1.15
MHz
Voltage stability
VIN = 11 V to 20 V
0.2
2
%
Total variation
Line, Temperature
0.80
1.20
MHz
Sync pin threshold
TJ = 25_C
3.8
V
Clock out peak
TJ = 25_C
4.3
V
Clock out low
TJ = 25_C
3.3
V
Clock out pulse width
RCLOCKSYNC = 3.9 k
30
100
ns
Maximum frequency
RFREQSET = 5 k
2
MHz
Ramp Generator/Slope Compensation
Minimum ramp current
ISLOPE = 10 A,
VFREQSET = VREF
11
14
A
Maximum ramp current
ISLOPE = 1 mA,
VFREQSET = VREF
0.8
0.95
mA
Ramp valley
0
V
Ramp peak clamping level
RFREQSET = 100 k
3.8
4.1
V
Current Limit
Input bias current
VCS+ = 3 V
2
5
A
Threshold voltage
2.4
2.5
2.6
V
Delay to output
85
150
ns
Soft-Start/Reset Delay
Charge current
VSOFTSTART = 0.5 V
20
9
3
A
Discharge current
VSOFTSTART = 1 V
120
230
A
Restart threshold
4.3
4.7
V
Discharge level
300
mV
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