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UC2875-EP Fiches technique(PDF) 6 Page - Texas Instruments |
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UC2875-EP Fiches technique(HTML) 6 Page - Texas Instruments |
6 / 18 page 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 A−B = CDELAYSET C−D = 0.01 mF, IDELAYSET A−B = IDELAYSET C−D = −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 µA 2.3 2.4 2.6 V Delay time IDELAY = −250 µA, 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 10−12) / IDELAY sec where IDELAY = Delay set voltage / RDELAY. The recommended range for IDELAY is 25 µA 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 |
Numéro de pièce similaire - UC2875-EP_15 |
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Description similaire - UC2875-EP_15 |
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