公开(公告)号：WO1982003141A1

公开(公告)日：1982-09-16

申请号：PCT/US1982000294

申请日：1982-03-08

Applicant: NCR CORP

Inventor： NCR CORP ,  BRUCKNER RONALD LOUIS ,  KHAMARE ISHWAR SINGH ,  VOYER JOSEPH LARRY ,  HAMILTON RODNEY VICTOR ,  GHEORGHIU PAUL

IPC: H02M03/335

CPC classification number: H02M3/3378

Abstract: A power supply includes a digital controller (10) which generates pulse-width modulated control signals for controlling the duty cycles of switching transistors (36) for the purpose of regulating the output voltage of the power supply. In order to generate the control signals, the controller includes an adding circuit arranged to add a digital value representing a standard pulse-width modulated control signal to another digital value dependent on the difference between successive digital values each representing an instantaneous value of an output voltage level of the power supply. The controller also includes circuits for controlling a starting up routine for the power supply and for selecting an operating switching frequency. Since the controller is digital in construction, integrated circuit chips may be used so that the power supply is of simple construction and of low cost.

Abstract translation: 电源包括数字控制器（10），其产生用于控制开关晶体管（36）的占空比的脉冲宽度调制控制信号，以调节电源的输出电压。 为了产生控制信号，控制器包括一个相加电路，该相加电路被布置成将表示标准脉冲宽度调制控制信号的数字值加到另一个数字值上，这取决于连续数字值之间的差值，每个数字值表示输出电压的瞬时值 电源水平。 控制器还包括用于控制电源的启动程序和选择工作开关频率的电路。 由于控制器是数字化的，所以可以使用集成电路芯片，使电源结构简单，成本低廉。

公开(公告)号：WO1982003137A1

公开(公告)日：1982-09-16

申请号：PCT/US1982000296

申请日：1982-03-08

Applicant: NCR CORP

Inventor： NCR CORP ,  KHAMARE ISHWAR SINGH ,  HAMILTON RODNEY VICTOR

IPC: G08B21/00

CPC classification number: G01R31/40 ,  H02M3/33507

Abstract: A power supply includes a digital controller (10) which generates pulse-width modulated control signals for controlling the duty cycles of switching transistors (36) for the purpose of regulating the output voltage of the power supply. The controller (10) incorporates a diagnostic system which includes a plurality of comparators (297) arranged to compare each of a number of voltage level signals representing operating conditions at portions of the power supply with a reference voltage, and logic circuits (330-348) responsive to the outputs of the two comparators for generating an output identifying an element of the power supply which has failed. This output is stored and is displayed in a LED display (154) which is actuated by operation of a switch member (360). Integrated circuit chips may be used in the controller so that the diagnostic system is of simple construction and of low cost.

Abstract translation: 电源包括数字控制器（10），其产生用于控制开关晶体管（36）的占空比的用于调节电源的输出电压的脉宽调制控制信号。 控制器（10）包括诊断系统，该诊断系统包括多个比较器（297），该多个比较器（297）被布置为将表示电源部分的操作条件的多个电压电平信号中的每一个与参考电压进行比较，以及逻辑电路（330-348 ）响应于两个比较器的输出，用于产生识别已经失败的电源的元件的输出。 该输出被存储并显示在通过开关构件（360）的操作致动的LED显示器（154）中。 集成电路芯片可用于控制器，使诊断系统结构简单，成本低廉。

公开(公告)号：EP0074391A4

公开(公告)日：1984-07-25

申请号：EP82901228

申请日：1982-03-08

Applicant: NCR CORP

Inventor： BRUCKNER RONALD LOUIS ,  KHAMARE ISHWAR SINGH ,  VOYER JOSEPH LARRY ,  HAMILTON RODNEY VICTOR ,  GHEORGHIU PAUL

IPC: G05F1/56 ,  G05F1/10 ,  H02M3/28 ,  H02M3/335 ,  H02M3/337 ,  H02P13/20

CPC classification number: H02M3/3378

Abstract: A power supply includes a digital controller (10) which generates pulse-width modulated control signals for controlling the duty cycles of switching transistors (36) for the purpose of regulating the output voltage of the power supply. In order to generate the control signals, the controller includes an adding circuit arranged to add a digital value representing a standard pulse-width modulated control signal to another digital value dependent on the difference between successive digital values each representing an instantaneous value of an output voltage level of the power supply. The controller also includes circuits for controlling a starting up routine for the power supply and for selecting an operating switching frequency. Since the controller is digital in construction, integrated circuit chips may be used so that the power supply is of simple construction and of low cost.

公开(公告)号：EP0074392A4

公开(公告)日：1983-07-08

申请号：EP82901230

申请日：1982-03-08

Applicant: NCR CORP

Inventor： KHAMARE ISHWAR SINGH ,  HAMILTON RODNEY VICTOR

IPC: H02J1/00 ,  G01R31/40 ,  G08B21/00 ,  H02M3/335

CPC classification number: G01R31/40 ,  H02M3/33507

Abstract: A power supply includes a digital controller (10) which generates pulse-width modulated control signals for controlling the duty cycles of switching transistors (36) for the purpose of regulating the output voltage of the power supply. The controller (10) incorporates a diagnostic system which includes a plurality of comparators (297) arranged to compare each of a number of voltage level signals representing operating conditions at portions of the power supply with a reference voltage, and logic circuits (330-348) responsive to the outputs of the two comparators for generating an output identifying an element of the power supply which has failed. This output is stored and is displayed in a LED display (154) which is actuated by operation of a switch member (360). Integrated circuit chips may be used in the controller so that the diagnostic system is of simple construction and of low cost.