GB1414248A – Semiconductor switching circuit
– Google Patents
GB1414248A – Semiconductor switching circuit
– Google Patents
Semiconductor switching circuit
Info
Publication number
GB1414248A
GB1414248A
GB4975473A
GB4975473A
GB1414248A
GB 1414248 A
GB1414248 A
GB 1414248A
GB 4975473 A
GB4975473 A
GB 4975473A
GB 4975473 A
GB4975473 A
GB 4975473A
GB 1414248 A
GB1414248 A
GB 1414248A
Authority
GB
United Kingdom
Prior art keywords
transistor
voltage
capacitor
diode
conducting
Prior art date
1972-11-03
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4975473A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1972-11-03
Filing date
1973-10-25
Publication date
1975-11-19
1973-10-25
Application filed by International Business Machines Corp
filed
Critical
International Business Machines Corp
1975-11-19
Publication of GB1414248A
publication
Critical
patent/GB1414248A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
H02M1/00—Details of apparatus for conversion
H02M1/32—Means for protecting converters other than automatic disconnection
H—ELECTRICITY
H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
H02M3/00—Conversion of dc power input into dc power output
H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
H—ELECTRICITY
H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
H02M3/00—Conversion of dc power input into dc power output
H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H02M3/338—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement
H02M3/3385—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement with automatic control of output voltage or current
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03K—PULSE TECHNIQUE
H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
H03K17/0814—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit
H03K17/08146—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit in bipolar transistor switches
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
1414248 Switching inductive loads INTERNATIONAL BUSINESS MACHINES CORP 25 Oct 1973 [3 Nov 1972] 49754/73 Heading H3T [Also in Divisions G3 and H2] An inductive load, e.g. the output transformer of a D.C. to A.C. converter, is connected to a supply via a semiconductor switching device 16 and a diode 83 and, in order to prevent excessive loading of the switching device during switch off, a resonant circuit 80, 81, 82 is connected across the switching device with the diode 81 poled to allow half a cycle of oscillation through the switching device and a diode 91 is connected between the capacitor and the supply to conduct if the capacitor terminal voltage rises above the supply voltage. The Figure shows a free running inverter of the type in which the transformer 4 is charged when a switching transistor 16 is conducting and which, when the transistor is non-conducting, discharges into capacitors 13 and 14 to provide negative and positive supplies. Ringing of the leakage inductance during switch-off can cause the transistor voltage to rise excessively and this is avoided by arranging that the leakage inductance resonantly discharges via diodes 83 and 91 into a capacotor to charge it close to the supply value. When transistor 16 is conducting the charge is resonantly reversed through the resonant circuit 81, 80 so that when the transistor is switched off again the capacitor holds the collector at a low voltage level. If the capacitor does not charge sufficiently closely to the supply voltage level the voltage may be enhanced from a further transformer winding (Fig. 2, not shown). The “on” and “off” times of the inverter are controlled as follows. During the “on” time a capacitor 36 charges through a resistor 37 until a comparator 42 detects equality of voltage with a reference level 43 whereupon the comparator renders conducting a transistor 21 which switches on 26 and thus removes the feedback through transformer 30 so that transistor 16 switches off. The output voltage of the inverter therefore decays to a low level which switches off the base curent of a transistor 22. In the meantime a capacitor 36 has discharged through diode 39 to the threshold voltage of a diode 38 so that 21 is non-conducting and if 22 is off the feedback becomes effective again and a new cycle to start. The output voltage of the inverter is controlled by adding together positive voltages received from the circuit at 55 and 56 and, after inversion at 65, negative voltages received at 57 and 58. If the sum value exceeds a reference level at the input of a comparator 73 the latter switches on a transistor 23 to switch off or to maintain off the feedback for the transistor 16.
GB4975473A
1972-11-03
1973-10-25
Semiconductor switching circuit
Expired
GB1414248A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US00303663A
US3818311A
(en)
1972-11-03
1972-11-03
Protective circuit for semi-conductor switch
Publications (1)
Publication Number
Publication Date
GB1414248A
true
GB1414248A
(en)
1975-11-19
Family
ID=23173129
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB4975473A
Expired
GB1414248A
(en)
1972-11-03
1973-10-25
Semiconductor switching circuit
Country Status (5)
Country
Link
US
(1)
US3818311A
(en)
JP
(1)
JPS4978131A
(en)
DE
(1)
DE2354737A1
(en)
FR
(1)
FR2205787B1
(en)
GB
(1)
GB1414248A
(en)
Families Citing this family (8)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4016482A
(en)
*
1975-10-31
1977-04-05
International Business Machines Corporation
Pulse energy suppression network
US4249223A
(en)
*
1978-12-01
1981-02-03
Westinghouse Electric Corp.
High voltage DC contactor with solid state arc quenching
DE3412444A1
(en)
*
1984-03-30
1985-10-03
Siemens AG, 1000 Berlin und 8000 München
DC CONVERTER
US4922401A
(en)
*
1989-05-22
1990-05-01
International Fuel Cells
Inverter circuit utilizing the reverse voltage capabilities of symmetrical gate turn off thyristors
US6456511B1
(en)
2000-02-17
2002-09-24
Tyco Electronics Corporation
Start-up circuit for flyback converter having secondary pulse width modulation
US6775164B2
(en)
2002-03-14
2004-08-10
Tyco Electronics Corporation
Three-terminal, low voltage pulse width modulation controller IC
US8619395B2
(en)
2010-03-12
2013-12-31
Arc Suppression Technologies, Llc
Two terminal arc suppressor
DE102021201103A1
(en)
*
2021-02-05
2022-08-11
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein
DC VOLTAGE CONVERTER
Family Cites Families (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3313998A
(en)
*
1964-02-17
1967-04-11
Hewlett Packard Co
Switching-regulator power supply having energy return circuit
US3628047A
(en)
*
1970-04-06
1971-12-14
Trw Inc
Nondissipative power loss suppression circuit for transistor controlled power converters
1972
1972-11-03
US
US00303663A
patent/US3818311A/en
not_active
Expired – Lifetime
1973
1973-09-19
FR
FR7334208A
patent/FR2205787B1/fr
not_active
Expired
1973-10-05
JP
JP48111560A
patent/JPS4978131A/ja
active
Pending
1973-10-25
GB
GB4975473A
patent/GB1414248A/en
not_active
Expired
1973-11-02
DE
DE19732354737
patent/DE2354737A1/en
active
Pending
Also Published As
Publication number
Publication date
FR2205787B1
(en)
1976-05-14
JPS4978131A
(en)
1974-07-27
FR2205787A1
(en)
1974-05-31
DE2354737A1
(en)
1974-05-09
US3818311A
(en)
1974-06-18
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Legal Events
Date
Code
Title
Description
1976-03-31
PS
Patent sealed [section 19, patents act 1949]
1981-06-10
PCNP
Patent ceased through non-payment of renewal fee
