公开(公告)号：WO2012143050A3

公开(公告)日：2013-03-28

申请号：PCT/EP2011056369

申请日：2011-04-20

Applicant: ERICSSON TELEFON AB L M ,  MALMBERG JONAS ,  BORGENGREN HENRIK ,  KARLSSON MAGNUS ,  KULLMAN ANDERS ,  PERSSON OSCAR ,  WAHLEDOW FREDRIK

Inventor： MALMBERG JONAS ,  BORGENGREN HENRIK ,  KARLSSON MAGNUS ,  KULLMAN ANDERS ,  PERSSON OSCAR ,  WAHLEDOW FREDRIK

IPC: H02J1/08 ,  G06F1/32

CPC classification number: H02J1/08 ,  G06F1/26 ,  G06F1/3253 ,  H02M3/157 ,  H02M3/158 ,  H02M2001/007 ,  H02M2001/008 ,  Y02D10/151

Abstract: To reduce power loss in an intermediate bus architecture power system, an intermediate bus converter is provided which converts an input voltage to an intermediate bus voltage using a converting unit; receives a signal indicative of an output of a converting unit; determines an intermediate bus voltage to reduce power loss in dependence upon the signal indicative of an output of the converting unit; generates a control signal to control the converting unit to convert the input voltage to the determined intermediate bus voltage; and generates an intermediate bus voltage in dependence upon the control signal.

Abstract translation: 为了减少中间总线架构电源系统的功率损耗，提供了一种中间总线转换器，其使用转换单元将输入电压转换为中间总线电压; 接收指示转换单元的输出的信号; 根据指示转换单元的输出的信号，确定中间总线电压以减少功率损耗; 产生控制信号以控制转换单元将输入电压转换成所确定的中间总线电压; 并根据控制信号产生中间总线电压。

公开(公告)号：WO2012103941A3

公开(公告)日：2013-01-31

申请号：PCT/EP2011051476

申请日：2011-02-02

Applicant: ERICSSON TELEFON AB L M ,  KARLSSON MAGNUS ,  BORGENGREN HENRIK ,  KULLMAN ANDERS ,  MALMBERG JONAS ,  WAHLEDOW FREDRIK

Inventor： KARLSSON MAGNUS ,  BORGENGREN HENRIK ,  KULLMAN ANDERS ,  MALMBERG JONAS ,  WAHLEDOW FREDRIK

IPC: H02M3/157 ,  H02M3/156 ,  H02M3/335 ,  H03K5/1534

CPC classification number: H02M3/156 ,  H02M2001/0022

Abstract: A switched mode power supply (SMPS) comprising a feedback unit, voltage feed forward (VFF) compensation signal generator (1211) and a transient detector (701) is disclosed. A VFF compensation signal is only applied to the output of the feedback unit when a transient is detected by the transient detector (701) on the input voltage of the SMPS, thereby a saving power and computation time. The transient detector (701) comprises a first comparator (402) to detect that a positive transient has occurred if a difference signal is greater than a positive threshold level Cb1Q); a second comparator (403) to determine if the difference signal is within a predetermined range of positive values and output a result that indicates if the difference signal is within the predetermined range of positive values; and a first calculator (405) to detect that a positive transient has occurred if, out of a first predetermined number (N1) of consecutive results of the output of the second comparator (403), there is at least a second predetermined number (X1) of results indicating that the difference signal is within the predetermined range of positive values. The transient detector comprises further features for similarly detecting a negative transient. The transient detector (701) is particularly good at dealing with measurement noise and light load induced noise.

Abstract translation: 公开了一种包括反馈单元，电压前馈（VFF）补偿信号发生器（1211）和瞬态检测器（701）的开关模式电源（SMPS）。 当瞬态检测器（701）在SMPS的输入电压上检测到瞬态时，VFF补偿信号仅施加到反馈单元的输出，从而节省功率和计算时间。 瞬态检测器（701）包括第一比较器（402），用于检测在差信号大于正阈值电平Cb1Q时是否发生正瞬变; 第二比较器（403），用于确定差分信号是否在正值的预定范围内，并输出指示差信号是否在正值的预定范围内的结果; 以及第一计算器（405），用于检测是否产生正瞬态，如果在所述第二比较器（403）的输出的连续结果的第一预定数目（N1）中至少存在第二预定数（X1 ）表示差信号在正值的预定范围内的结果。 瞬态检测器包括用于类似地检测负瞬变的另外的特征。 瞬态检测器（701）特别适用于处理测量噪声和轻载感应噪声。

公开(公告)号：IN3129DEN2014A

公开(公告)日：2015-06-26

申请号：IN3129DEN2014

申请日：2014-04-21

Applicant: ERICSSON TELEFON AB L M

Inventor： KARLSSON MAGNUS ,  KULLMAN ANDERS ,  MALMBERG JONAS ,  WAHLEDOW FREDRIK

IPC: H02M3/337 ,  H02M1/36

Abstract: An isolated switched mode power supply, SMPS, comprising: a switching controller (230) operable to generate startup switching control signals during start-up of the isolated SMPS (200), and operational switching control signals of period T during subsequent operation of the isolated SMPS (200); a transformer (110) having a primary winding (111); and a full-bridge drive circuit arranged to drive the primary winding (ill) of the transformer in response to the switching control signals. The full-bridge drive - circuit has: a first switching element (Q2); a boot-strap driving circuit (120) arranged to switch the first switching element (Q2) in response to the switching control signals, the boot-strap driving circuit having a boot-strap capacitor; and a second switching element (Q4) connected to the first switching element (Q2) and to the boot-strap driving circuit (120), and arranged to conduct a current to charge the boot-strap capacitor when switched ON in response to the switching control signals. The switching controller (230) is operable to start up the isolated SMPS by: determining a duty cycle D for the operational switching control signals based on a voltage (V t) at an output of the isolated SMPS; and generating the start-up switching control signals comprising a first voltage pulse of duration PI to temporarily switch ON the second switching element (Q4), and a subsequent second voltage pulse of duration P2 to temporarily switch ON the first switching element (Q2), wherein P1

公开(公告)号：IN3188DEN2014A

公开(公告)日：2015-05-22

申请号：IN3188DEN2014

申请日：2014-04-22

Applicant: ERICSSON TELEFON AB L M

Inventor： PERSSON OSCAR ,  KARLSSON MAGNUS ,  MALMBERG JONAS

IPC: H02M1/32

Abstract: The present disclosure relates to methods a system and a module for operating a power converter module (1) the power converter module (1) comprises a voltage converter (4) an output circuitry (7) and a processing circuitry (8) operable for controlling the voltage converter (4). According to an embodiment the method comprises transmitting (10) a first status signal representing operating parameters of the voltage converter (4) to the processing circuitry (8). Determining (11) whether the status of the voltage converter (4) is acceptable or unacceptable. The method also comprises transmitting (12) a second status signal representing the operating parameters of the output circuitry (7) to the processing circuitry (8). The method also comprises determining (13) if the second status signal is above a predetermined threshold value. When the second status signal is above said predetermined threshold value and the status of the voltage converter (4) is acceptable (14) entering a peak output mode (15). The peak output mode (15) involves determining (16) based on a maximum output voltage if the output voltage is allowed to increase. If allowed increasing (17) the output voltage and operating (18) the voltage converter (4) at maximum power dissipation as long as the status of the voltage converter (4) is acceptable and the second status signal is above said predetermined threshold value (19).