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AN1376 Datasheet(PDF) 6 Page - STMicroelectronics |
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AN1376 Datasheet(HTML) 6 Page - STMicroelectronics |
6 / 35 page AN1376 APPLICATION NOTE 6/35 The maximum PIV of the diodes has been measured during the worst operating condition and it is indicated on the right of each picture. The margin, with respect to the maximum voltage sustained by the diodes, assures a safe operating condition for the devices. Here following the most salient controller IC signals are depicted. In both the pictures is pos- sible to distinguish clean waveforms free of hard spikes or noise that could affect the controller correct operation. Figure 5. Vin = 115 Vrms - 50 Hz Vin = 220 Vrms - 50 Hz 4 CROSS REGULATION In the following tables the output voltage cross regulation is measured with static and dynamic loads and the overall efficiency of the converter measured at different input voltages. All the output voltages have been measured after the load connector soldering point of the STB motherboard. The length of the connection cable is 100 mm. ■ FULL LOAD Vout [V} = 30.06 7.23 12.297 3.278 4.492 Vin [Vrms]= 115 Iout [A] = 0.015 0.500 0.702 2.073 1.103 Iin [Arms] = 0.51 Pout [W] = 0.451 3.615 8.632 6.795 4.955 Pin [W] = 36.0 VUNREG = 37.2 PoutTOT [W] = 24.448 VC11 = 11.88 EFF. = 67.91% fS = 41÷51 kHz ALL VOLTAGES ARE WITHIN TOLERANCE CH1: VPIN5 - ZCD CH2: VPIN4 - ISENSE CH3: VPIN7 - OUT CH4: VPIN2 - COMP |
Similar Part No. - AN1376 |
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Similar Description - AN1376 |
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