Get Power management techniques for integrated circuit design PDF

By Ke-Horng Chen

ISBN-10: 1118896823

ISBN-13: 9781118896822

ISBN-10: 111889684X

ISBN-13: 9781118896846

This publication starts off with the idea that power calls for are directing scientists in the direction of evergreener equipment of strength administration, so hugely built-in energy keep watch over ICs (integrated chip/circuit) are more and more sought after for additional lowering strength intake. A well timed and accomplished reference advisor for IC designers facing the more and more frequent call for for built-in low strength administration contains new issues similar to LED lights, quick brief reaction, DVStracking and layout with complicated expertise nodes prime writer (Chen) is an energetic and popular contributor to the ability administration IC layout box, and has vast event.

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4 Power Conversion Efficiency Power conversion efficiency is the most important design issue, especially in the batteryoperated power management module. Power conversion efficiency is defined as the ratio of the provided output power to the total power received from the input supply. It can be formulated as: η= POUT POUT = PIN POUT + Pcon + Psw + PQ + Pothers 1 16 The total power received from the input supply needs to provide the following items: the output power (POUT), the conduction loss at the power stage (Pcon), the switching loss at the power stage (Psw), the quiescent current power of the control circuits (PQ), and the power loss caused by parasitic elements in realistic silicon fabrication (Pothers).

1 Basic LDO Architecture In general, the voltage drop across power transistors in LDOs results in unavoidable heat in the power transistors. LDOs are appropriate for low-power applications because of heat dissipation. A simple LDO consists of an error amplifier (EA) and power transistors to eliminate ripples and regulate output voltage. LDO regulators have the smallest layout and footprint area, and a low quiescent current to provide small volume and high current efficiency. 2 illustrates the architecture of a basic LDO regulator.

Design flow and tips are also illustrated to understand the specifications and performance in A-LDO regulators. The characteristics of A-LDO and D-LDO regulators are then discussed and compared. LDO regulators with specific features are introduced to satisfy the requirements of various applications. Furthermore, low-power techniques, including novel dynamic-voltage scaling (DVS) and analog dynamic-voltage scaling (ADVS), are introduced for compatible utilization in Soc applications. 1 Basic LDO Architecture In general, the voltage drop across power transistors in LDOs results in unavoidable heat in the power transistors.

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Power management techniques for integrated circuit design by Ke-Horng Chen


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