-
公开(公告)号：US20150049529A1
公开(公告)日：2015-02-19
申请号：US14458078
申请日：2014-08-12
Applicant: DORA S.p.A. , STMicroelectronics S.r.l.
Inventor： Alberto Iorio , Giuseppe Scappatura , Alberto Bianco , Claudio Adragna , Silvio De Simone , Maurizio Foresta
CPC classification number: H02M7/217 , H02M3/33507 , H02M3/33592 , H02M2001/0058 , Y02B70/1475 , Y02B70/1491
Abstract: A control device for a transistor of a switching converter rectifier generates a control signal of the transistor and comprises a circuit to measure the conduction time of the body diode of the transistor cycle by cycle. When the conduction time is greater than a first threshold, the off time instant of the transistor is delayed by a first quantity in the next cycles, until the conduction time is less than the first threshold and greater than a second threshold. When the conduction time is between the first and second thresholds, the off time instant is delayed by a fixed second quantity in the next cycles until the conduction time is lower than the second threshold, with the second quantity less than the first quantity. When the conduction time is lower than the second threshold, the off time instant is advanced by the second quantity in the next cycle.
Abstract translation: 用于开关转换器整流器的晶体管的控制装置产生晶体管的控制信号，并且包括用于逐周期地测量晶体管体二极管的导通时间的电路。 当导通时间大于第一阈值时，晶体管的截止时间瞬间在下一个周期中延迟第一量，直到导通时间小于第一阈值并大于第二阈值。 当导通时间在第一阈值和第二阈值之间时，关闭时刻在下一个周期中延迟固定的第二数量，直到导通时间低于第二阈值，第二数量小于第一数量。 当导通时间低于第二阈值时，关闭时刻在下一个周期中提前第二个数量。
-
公开(公告)号：US09356535B2
公开(公告)日：2016-05-31
申请号：US14458078
申请日：2014-08-12
Applicant: DORA S.p.A. , STMicroelectronics S.r.l.
Inventor： Alberto Iorio , Giuseppe Scappatura , Alberto Bianco , Claudio Adragna , Silvio De Simone , Maurizio Foresta
CPC classification number: H02M7/217 , H02M3/33507 , H02M3/33592 , H02M2001/0058 , Y02B70/1475 , Y02B70/1491
Abstract: A control device for a transistor of a switching converter rectifier generates a control signal of the transistor and includes a circuit to measure the conduction time of the body diode of the transistor cycle by cycle. When the conduction time is greater than a first threshold, the off time instant of the transistor is delayed by a first quantity in the next cycles, until the conduction time is less than the first threshold and greater than a second threshold. When the conduction time is between the first and second thresholds, the off time instant is delayed by a fixed second quantity in the next cycles until the conduction time is lower than the second threshold, with the second quantity less than the first quantity. When the conduction time is lower than the second threshold, the off time instant is advanced by the second quantity in the next cycle.
Abstract translation: 用于开关转换器整流器的晶体管的控制装置产生晶体管的控制信号，并且包括用于逐周期地测量晶体管体二极管的导通时间的电路。 当导通时间大于第一阈值时，晶体管的截止时间瞬间在下一个周期中延迟第一量，直到导通时间小于第一阈值并大于第二阈值。 当导通时间在第一阈值和第二阈值之间时，关闭时刻在下一个周期中延迟固定的第二数量，直到导通时间低于第二阈值，第二数量小于第一数量。 当导通时间低于第二阈值时，关闭时刻在下一个周期中提前第二个数量。
-
公开(公告)号：US10715046B2
公开(公告)日：2020-07-14
申请号：US16239386
申请日：2019-01-03
Applicant: STMicroelectronics S.r.l.
Inventor： Alberto Bianco , Giuseppe Scappatura
Abstract: A method and apparatus for secondary side current mode control of a converter are provided. In the method and apparatus, an output voltage of the converter is detected, where the converter has primary and secondary windings that are galvanically isolated in respective primary and secondary sides. A secondary control signal is generated in the secondary side based at least in part on the output voltage and a reference voltage. The secondary control signal is converted to a primary control signal provided in the primary side. The converter is driven in the primary side based at least in part on the primary control signal and a current sense signal indicative of a current flowing through the primary winding.
-
公开(公告)号：US10468990B2
公开(公告)日：2019-11-05
申请号：US16129377
申请日：2018-09-12
Applicant: STMicroelectronics S.r.l.
Inventor： Gabriele Gherdovich , Alberto Bianco , Giuseppe Scappatura
Abstract: A controller circuit for an AC-DC converter includes a first controller circuit block configured to drive one or more switches at the primary side of a transformer in the AC-DC converter. A second controller circuit block is configured to sense, at a secondary side of the transformer in said AC-DC converter, a secondary side signal indicative of the output signal from said AC-DC converter. The second controller circuit block generates switching control signals for the first controller circuit block as a function of the secondary side signal. An isolator circuit block between the first controller circuit block and the second controller circuit block includes an isolated transmission channel of the switching control signals from the second controller circuit block to the first controller circuit block.
-
公开(公告)号：US20190140544A1
公开(公告)日：2019-05-09
申请号：US16239386
申请日：2019-01-03
Applicant: STMicroelectronics S.r.l.
Inventor： Alberto Bianco , Giuseppe Scappatura
CPC classification number: H02M3/3353 , H02M3/3155 , H02M3/33507 , H02M3/33538 , H02M3/33576 , H02M2001/0003 , H02M2001/0009 , H02M2001/0025
Abstract: A method and apparatus for secondary side current mode control of a converter are provided. In the method and apparatus, an output voltage of the converter is detected, where the converter has primary and secondary windings that are galvanically isolated in respective primary and secondary sides. A secondary control signal is generated in the secondary side based at least in part on the output voltage and a reference voltage. The secondary control signal is converted to a primary control signal provided in the primary side. The converter is driven in the primary side based at least in part on the primary control signal and a current sense signal indicative of a current flowing through the primary winding.
-
Patent Agency Ranking
公开(公告)号：US09722494B2
公开(公告)日：2017-08-01
申请号：US14700659
申请日：2015-04-30
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Alberto Bianco , Giuseppe Scappatura
CPC classification number: H02M1/4225 , H02M1/083 , H02M1/088 , H02M3/1584 , H02M3/285 , H02M2001/0058 , Y02B70/126
Abstract: A controller for a multiphase converter comprises a first stage controller for producing a first gate drive signal to turn on a first power transistor of a first boost converter; a delay element configured to produce a delayed signal by delaying the first gate drive signal by half a cycle length; a time difference detection element configured to: output a turn on command based on a zero crossing detection (ZCD) signal indicating that one or more zero current conditions of a second boost converter of the multiphase converter are met and the delayed signal; and a second stage controller configured to assert a second gate drive signal to turn on a second power transistor of the second boost converter based on the turn on command.
-
公开(公告)号：US11018578B1
公开(公告)日：2021-05-25
申请号：US16671002
申请日：2019-10-31
Applicant: STMicroelectronics S.R.L.
Inventor： Alberto Bianco , Giuseppe Scappatura , Francesco Ciappa
Abstract: An electronic device includes a circuit board that manages supply of electricity to the electronic device. The circuit board includes an integrated circuit and an external capacitor coupled to a supply terminal of the circuit board. During a startup operation of the integrated circuit, the integrated circuit supplies a first charging current to charge the capacitor to a supply voltage value. The circuit board includes a boost circuit that receives a portion of the first charging current and outputs a second charging current that augments charging of the capacitor. The second charging current is an amplification of the first charging current. The integrated circuit enables operation of the electronic device after the capacitor is charged to the supply voltage value.
-
公开(公告)号：US20210135568A1
公开(公告)日：2021-05-06
申请号：US16671002
申请日：2019-10-31
Applicant: STMicroelectronics S.R.L.
Inventor： Alberto Bianco , Giuseppe Scappatura , Francesco Ciappa
Abstract: An electronic device includes a circuit board that manages supply of electricity to the electronic device. The circuit board includes an integrated circuit and an external capacitor coupled to a supply terminal of the circuit board. During a startup operation of the integrated circuit, the integrated circuit supplies a first charging current to charge the capacitor to a supply voltage value. The circuit board includes a boost circuit that receives a portion of the first charging current and outputs a second charging current that augments charging of the capacitor. The second charging current is an amplification of the first charging current. The integrated circuit enables operation of the electronic device after the capacitor is charged to the supply voltage value.
-
公开(公告)号：US20170207695A1
公开(公告)日：2017-07-20
申请号：US15476698
申请日：2017-03-31
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Alberto Bianco , Giuseppe Scappatura
CPC classification number: H02M1/42 , H02J7/0052 , H02J2007/0059 , H02M1/083 , H02M1/36 , H02M1/4208 , H02M1/4225 , H02M1/44 , H02M3/04 , H02M7/04 , H02M2001/0009 , H02M2001/0058 , H05B33/0809 , H05B33/0815 , Y02B70/126 , Y02B70/1491
Abstract: A control device for a converter of the switched-mode type provided with an inductor element and a switch element generates a driving signal for controlling switching of the switch element and determining alternately a phase of storage of energy in the inductor element as a function of an input quantity and a phase of transfer of the energy stored in the inductor element to an output element on which an output quantity is present; the control device generates the driving signal by means of a control based on the value of the output quantity in order to regulate the same output quantity. In particular, an estimation block determines an estimated value of the output quantity, and a driving block generates the driving signal as a function of said estimated value.
-
公开(公告)号：US11870361B2
公开(公告)日：2024-01-09
申请号：US17475017
申请日：2021-09-14
Applicant: STMicroelectronics S.r.l.
Inventor： Alberto Bianco , Francesco Ciappa , Giuseppe Scappatura
IPC: H02M3/335
CPC classification number: H02M3/33592
Abstract: The present disclosure relates to solutions for operating a flyback converter comprising an active clamp. The flyback converter comprises two input terminals and two output terminals. A first electronic switch and the primary winding of a transformer are connected in series between the input terminals. An active clamp circuit is connected in parallel with the primary winding. The active clamp circuit comprises a series connection of a clamp capacitor and a second electronic switch. A third electronic switch and the secondary winding of the transformer are connected in series between the two output terminals. In particular, the present disclosure relates to solutions for switching the first, second and third electronic switch in order to achieve a zero-voltage switching of the first electronic switch.
-
-
-
-
-
-
-
-
-
Search Results
25
records
(took 0.016 seconds)
