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This letter presents a high-frequency boost converter using an accurate feedforward-path current sensor for the fast-load transient response. To operate with the switching frequency of up to 25 MHz, the proposed current sensor senses the inductor current with a fast-sensing response time of about 4.5 ns. It also provides more accurate sensing gain than previous current sensors. In addition, the adaptive on-time control method is used for the proposed converter to further enhance the transient responses. The converter has been fabricated using a 0.18-μm CMOS process with a total chip area of 1.3 × 1.12 mm. It achieves a fast-load transient of only 1 μs at a 400-mA load step, and peak efficiency of 91.5 and 88.2% at switching frequencies of 15 and 25 MHz, respectively. [ABSTRACT FROM AUTHOR]

Controller area network with flexible data rate (CAN-FD) has been introduced to support higher data rates for intelligent automotive systems. To achieve a robustness in the electronic functions of electronic systems, CAN-FD transmitters should provide a good symmetry between the differential signaling on the CAN bus radiating a low electromagnetic emission (EME). This paper proposes a new CAN-FD transmitter which achieves good symmetry on the CAN-FD signals. Also, a so-called ``Ping-Pong” driving scheme is introduced. Without using complex circuits and after-calibration process, this method can match accurate turn-on/off timing of the transmitter signals. The proposed CAN-FD transmitter was fabricated using a $0.18\,\mu {\text{m}}$ automotive Bipolar-CMOS-DMOS process. The measurement results show that the proposed CAN-FD transmitter improves the voltage symmetry of the CAN bus at 5 Mbps, achieving a low EME. [ABSTRACT FROM AUTHOR]

This paper proposes a split power-driving scheme for electromagnetic interference robust design and its automatic stepwise digital slope control for suppression of spectral emission. This analog–digital hybrid method gives power saving effect up to 24.4%, and also production reliability can be improved by utilizing a failure detection and recovery scheme. For feasibility of the proposed electromagnetic compatibility (EMC) scheme, a Local Interconnect Network transceiver prototype is fabricated in a 0.18-μm BCD process, and experimentally verified to provide EMC-enhanced operation with low-cost and low-power overheads. [ABSTRACT FROM AUTHOR]