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Large supply bouncing due to the fast switching current and parasitic inductance of the supply rail may cause reliability and electromagnetic interference (EMI) problems, especially for ICs with the pulse-width modulation (PWM) technique, such as switching DC-DC converters. In this paper, a new slew-rate controlled (SRC) output stage is proposed to appropriately increase the rise and fall times of...
This paper deals with the design and the realization of an integrated isolated HF dc-to-dc converter for low-voltage and low-power conditioning applications (3.3 V and 1 W) including galvanic isolation. It is based on the 3-D integration of several elementary silicon dies in which essential components such as the inverter, the rectifier, the HF transformer, the input and output capacitors, and the...
A compact soft-start technique, with an internal circuitry, is presented for the start-up of current mode DC-DC converters for biomedical applications. Examples of medical applications in DC-DC converters include bio-patch, wireless medical sensor node, RFID applications and medical instruments that must have a high stability. To achieve this, a soft-start circuit is proposed to prevent inrush current...
In this paper we propose a controlled cross-coupled switched-capacitor based embedded DC-DC buck converter based on non-overlapping rotational time interleaving switching scheme and frequency control regulation. Proposed converter uses low swing internal signals to control half of the switches. In addition to reduction of switching power loss, the low swing control signals help to use smaller switches...
An architecture of inductor-less DC-DC boost converter for high efficiency and low output ripple is proposed. Output ripple is reduced by splitting flying capacitors into a number of smaller elements and using a new switching scheme called non-overlapped rotational-interleaving (NORI). The proposed switching scheme also helps to eliminate reversion and shoot through current hence improves the power...
This paper presents a new 1.2 V high power supply rejection (PSR) voltage reference. The proposed design employs a high-PSR pseudo floating voltage source and a differential-to-single-ended R-MOS capacitor signal-conditioning circuit to achieve high PSR performance metric. The high-PSR pseudo floating voltage source consists of the merged design of two Brokaw's reference circuits. The proposed bandgap...
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