公开(公告)号：US09312844B2

公开(公告)日：2016-04-12

申请号：US14080151

申请日：2013-11-14

Applicant: Microchip Technology Incorporated

Inventor： Hartono Darmawaskita ,  Sean Stacy Steedman ,  Cristian Nicolae Groza ,  Marilena Mancioiu ,  John Robert Charais ,  Zeke Lundstrum

IPC: H02M3/157 ,  H03K7/08 ,  H03K6/04 ,  H02M3/156 ,  H03K4/502

CPC classification number: H03K7/08 ,  H02M3/156 ,  H03K4/502 ,  H03K6/04

Abstract: A slope compensation module provides slope compensation of a switched-mode power supply using current mode control. The slope control unit comprises a capacitor coupled between an input and an output of the slope control unit, a switch for discharging the capacitor and a constant current source for charging the capacitor. Slope compensation parameters may be changed during operation with a programmable constant current source. The slope compensation module may also function as an analog sawtooth waveform frequency generator, and as an analog pulse width modulation (PWM) generator. Charging the capacitor generates a linearly decreasing (negative slope) ramp voltage for modulating a feedback error voltage into a slope compensated feedback error voltage. Capacitor charging may be controlled from a pulse width modulation signal. Opening of the switch may be programmably delayed, and a minimum closed time thereof may also be programmed during operation of the slope compensation module.

Abstract translation: 坡度补偿模块使用电流模式控制提供开关模式电源的斜率补偿。 斜坡控制单元包括耦合在斜坡控制单元的输入和输出之间的电容器，用于对电容器放电的开关和用于对电容器充电的恒流源。 斜坡补偿参数可能在使用可编程恒流源运行时发生变化。 斜坡补偿模块还可以作为模拟锯齿波形频率发生器，并且作为模拟脉宽调制（PWM）发生器。 对电容器充电产生线性递减（负斜率）斜坡电压，用于将反馈误差电压调制成斜率补偿反馈误差电压。 可以从脉冲宽度调制信号来控制电容充电。 可以可编程地延迟开关的打开，并且在斜坡补偿模块的操作期间也可以编程其最小关闭时间。

公开(公告)号：US20140132236A1

公开(公告)日：2014-05-15

申请号：US14080151

申请日：2013-11-14

Applicant: Microchip Technology Incorporated

Inventor： Hartono Darmawaskita ,  Sean Stacy Steedman ,  Cristian Nicolae Groza ,  Marilena Mancioiu ,  John Robert Charais ,  Zeke Lundstrum

IPC: H02M3/157 ,  H03K6/04 ,  H03K7/08

CPC classification number: H03K7/08 ,  H02M3/156 ,  H03K4/502 ,  H03K6/04

Abstract: A slope compensation module provides slope compensation of a switched-mode power supply using current mode control. The slope control unit comprises a capacitor coupled between an input and an output of the slope control unit, a switch for discharging the capacitor and a constant current source for charging the capacitor. Slope compensation parameters may be changed during operation with a programmable constant current source. The slope compensation module may also function as an analog sawtooth waveform frequency generator, and as an analog pulse width modulation (PWM) generator. Charging the capacitor generates a linearly decreasing (negative slope) ramp voltage for modulating a feedback error voltage into a slope compensated feedback error voltage. Capacitor charging may be controlled from a pulse width modulation signal. Opening of the switch may be programmably delayed, and a minimum closed time thereof may also be programmed during operation of the slope compensation module.

Abstract translation: 坡度补偿模块使用电流模式控制提供开关模式电源的斜率补偿。 斜坡控制单元包括耦合在斜坡控制单元的输入和输出之间的电容器，用于对电容器放电的开关和用于对电容器充电的恒流源。 斜坡补偿参数可能在使用可编程恒流源运行时发生变化。 斜坡补偿模块还可以作为模拟锯齿波形频率发生器，并且作为模拟脉宽调制（PWM）发生器。 对电容器充电产生线性递减（负斜率）斜坡电压，用于将反馈误差电压调制成斜率补偿反馈误差电压。 可以从脉冲宽度调制信号来控制电容充电。 可以可编程地延迟开关的打开，并且在斜坡补偿模块的操作期间也可以编程其最小关闭时间。