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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： | 12/15页 |
| 文件大小： | 389K |
| 代理商： | V62/04752-01XE |
UC2875EP
PHASE SHIFT RESONANT CONTROLLER
SGLS233A FEBRUARY 2004 REVISED DECEMBER 2008
6
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
Output Drivers
Output low level
IOUT = 50 mA
0.2
0.4
V
Output low level
IOUT = 500 mA
1.2
2.6
V
Output high level
IOUT = 50 mA
1.5
2.5
V
Output high level
IOUT = 500 mA
1.7
2.6
V
Delay Set
Delay set voltage
IDELAY = 500 A
2.3
2.4
2.6
V
Delay time
IDELAY = 250 A, See Notes 2 and 5
150
250
600
ns
NOTES:
1. Phase shift percentage (0% = 0
_, 100% = 180_) is defined as θ = 200/T Φ% , where θ is the phase shift, and Φ and T are defined
in Figure 1. At 0% phase shift,
Φ is the output skew.
2. Delay time is defined as delay = T (1/2(duty cycle)), where T is defined in Figure 1.
3. Ramp offset voltage has a temperature coefficient of about 4.0 mV/
_C.
4. Zero phase shift voltage has a temperature coefficient of about 2.0 mV/
_C.
5. Delay time can be programmed via resistors from the delay set pins to ground. Delay time
≈ (62.5 x 1012) / IDELAY sec where
IDELAY = Delay set voltage / RDELAY. The recommended range for IDELAY is 25 A v IDELAY v 1 mA
6. Ramp delay to output time is defined in NO TAG.
Figure 1. Phase Shift and Output Skew
Duty Cycle = t/T
Period = T
TDHL(A to C) = TDHL(B to D) = φ
Phase Shift, Output Skew, and Delay Time Definitions
φ
Figure 2. Delay Time
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