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FS6407 bảng dữ liệu(PDF) 53 Page - NXP Semiconductors |
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FS6407 bảng dữ liệu(HTML) 53 Page - NXP Semiconductors |
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53 / 111 page ![]() NXP Semiconductors 53 FS6407/FS6408 Figure 37. Power dissipation use case The main contributors to the device power dissipation are VPRE, VCORE, and VCCA (when used with internal PMOS) regulators. In comparison, the power dissipation from the Internal IC, VAUX and CAN transceiver are negligible. VPRE power dissipation is mainly induced by the loading of the regulators it is supplying, mainly VCORE, VCCA and VAUX, which are application dependant. The total device power dissipation, depending on the variation of these three regulators, is detailed in Figure 38 with the environmental conditions in the associated table. Vsup = 24V and 25% of CAN traffic use case 1: Vcore=3.3V, Icore=0.7A, Vcca with int. MOS use case 2: Vcore=1.2V, Icore=1.4A, Vcca with ext. PNP 1) CAN transceiver dissipation includes CAN_5V regulator dissipation. 2) 25% CAN traffic means the CAN bus is dominant for 25% of time and recessive for the remaining 75%. 1.2V |
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