公开(公告)号：US08954767B2

公开(公告)日：2015-02-10

申请号：US13888099

申请日：2013-05-06

Applicant: NXP B.V.

Inventor： Andre Gunther ,  Kevin Mahooti ,  Meng Hao

IPC: G06F1/00 ,  G06F1/32 ,  G05F1/56 ,  H02M3/156

CPC classification number: G06F1/3203 ,  G05F1/56 ,  H02M3/156

Abstract: Consistent with an example embodiment, there is a power regulator arrangement with variable current capacity providing power from a power supply to a load having variable demand. As a load, a high-performance microprocessor has several modes of operation. At the highest speed setting, it demands a lot of current. At slower clock speeds and during state retention, the processor has a very low current consumption. Using a single regulator, the current efficiency may be very low during long standby periods. To increase the efficiency even at lower load currents, a scheme is based on parallel operation of multiple regulators having different load ranges, for example, a “low, “medium,” and “high” range regulators. Having knowledge of the load current profile, the regulators can be adjusted such that the peak of the efficiency curve matches the load profile of the regulator. The efficiency of the power regulator arrangement is enhanced throughout the range of power demanded by the load.

Abstract translation: 与示例性实施例一致，存在具有可变电流容量的功率调节器装置，其从电源向具有可变需求的负载提供功率。 作为负载，高性能微处理器具有多种操作模式。 在最高速度设置下，需要大量的电流。 在较慢的时钟速度和状态保持期间，处理器具有非常低的电流消耗。 使用单个调节器，在长待机期间，电流效率可能非常低。 为了提高效率，即使在较低的负载电流下，一种方案是基于具有不同负载范围的多个稳压器的并联运行，例如“低”，“中”和“高”范围调节器。 了解负载电流曲线后，可以调整调节器，使得效率曲线的峰值与调节器的负载曲线相匹配。 在负载所需的功率范围内，功率调节器装置的效率得到提高。