ITVA930024A1 - Convertitore statico dc-dc funzionante in modo discontinuo - Google Patents

Convertitore statico dc-dc funzionante in modo discontinuo

Info

Publication number
ITVA930024A1
ITVA930024A1 IT93VA000024A ITVA930024A ITVA930024A1 IT VA930024 A1 ITVA930024 A1 IT VA930024A1 IT 93VA000024 A IT93VA000024 A IT 93VA000024A IT VA930024 A ITVA930024 A IT VA930024A IT VA930024 A1 ITVA930024 A1 IT VA930024A1
Authority
IT
Italy
Prior art keywords
switch
comparator
circuit
command
voltage
Prior art date
Application number
IT93VA000024A
Other languages
English (en)
Inventor
Maria Rosa Borghi
Pietro Menniti
Original Assignee
St Microelectronics Srl
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.)
Filing date
Publication date
Application filed by St Microelectronics Srl filed Critical St Microelectronics Srl
Priority to IT93VA000024A priority Critical patent/IT1268474B1/it
Publication of ITVA930024A0 publication Critical patent/ITVA930024A0/it
Priority to EP94830396A priority patent/EP0650250B1/en
Priority to DE69422138T priority patent/DE69422138T2/de
Priority to JP28424394A priority patent/JP3432616B2/ja
Priority to US08/328,232 priority patent/US5612610A/en
Publication of ITVA930024A1 publication Critical patent/ITVA930024A1/it
Application granted granted Critical
Publication of IT1268474B1 publication Critical patent/IT1268474B1/it

Links

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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/1563—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators without using an external clock
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/613—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in parallel with the load as final control devices
    • G05F1/614—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in parallel with the load as final control devices including two stages of regulation, at least one of which is output level responsive

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

Un convertitore impiega un comparatore atto a sentire la corrente attraverso il diodo di uscita, atto a fornire un comando logico di conferma di uno stato di spegnimento dell'interruttore fino a che la corrente di scarica dell'induttore verso il circuito utilizzatore e la capacità esterna di filtro, si sia annullata, assicurando in ogni condizione il funzionamento in modo "discontinuo". Un comando logico di spegnimento dell'interruttore è fornito da un comparatore che, invece che la tensione ai capi di una resistenza di sensing collegata in serie all'interruttore, può sentire la tensione ai capi dello stesso interruttore. In quest'ultimo caso, particolarmente utile nel caso di un transistore di uscita di tipo MOS, il circuito comprende mezzi atti a mascherare per un periodo di tempo prefissato, il comando di spegnimento prodotto dal comparatore, così da consentire un periodo di accensione dell'interruttore predefinito. L'abilitazione all'accensione dell'interruttore è convenzionalmente fornita da un terzo comparatore della tensione di uscita. Il circuito non richiede l'impiego di un amplificatore di errore, per la cui compensazione sono necessari circuiti complessi o l'accessibilità al nodo di uscita tramite un reoforo, né di un oscillatore locale per spegnere l'interruttore. Il circuito è particolarmente semplice ed efficace da integrare in macro-chip multisistemi in cui esiste una limitata disponibilità di reofori e di area di silicio. Sono illustrate diverse forme di realizzazione.
IT93VA000024A 1993-10-22 1993-10-22 Convertitore statico dc-dc funzionante in modo discontinuo IT1268474B1 (it)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IT93VA000024A IT1268474B1 (it) 1993-10-22 1993-10-22 Convertitore statico dc-dc funzionante in modo discontinuo
EP94830396A EP0650250B1 (en) 1993-10-22 1994-08-05 DC-to-DC converter operating in a discontinuous mode
DE69422138T DE69422138T2 (de) 1993-10-22 1994-08-05 Gleichstromwandler im diskontinuierlichem Betrieb arbeitend
JP28424394A JP3432616B2 (ja) 1993-10-22 1994-10-24 不連続モードで動作するｄｃ−ｄｃコンバータ
US08/328,232 US5612610A (en) 1993-10-22 1994-10-24 DC-to-DC converter operating in a discontinuous mode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT93VA000024A IT1268474B1 (it) 1993-10-22 1993-10-22 Convertitore statico dc-dc funzionante in modo discontinuo

Publications (3)

Publication Number Publication Date
ITVA930024A0 ITVA930024A0 (it) 1993-10-22
ITVA930024A1 true ITVA930024A1 (it) 1995-04-22
IT1268474B1 IT1268474B1 (it) 1997-03-04

Family

ID=11423261

Family Applications (1)

Application Number Title Priority Date Filing Date
IT93VA000024A IT1268474B1 (it) 1993-10-22 1993-10-22 Convertitore statico dc-dc funzionante in modo discontinuo

Country Status (5)

Country Link
US (1) US5612610A (it)
EP (1) EP0650250B1 (it)
JP (1) JP3432616B2 (it)
DE (1) DE69422138T2 (it)
IT (1) IT1268474B1 (it)

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Also Published As

Publication number Publication date
JPH07177731A (ja) 1995-07-14
EP0650250A1 (en) 1995-04-26
EP0650250B1 (en) 1999-12-15
DE69422138D1 (de) 2000-01-20
US5612610A (en) 1997-03-18
JP3432616B2 (ja) 2003-08-04
IT1268474B1 (it) 1997-03-04
DE69422138T2 (de) 2000-04-20
ITVA930024A0 (it) 1993-10-22

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Legal Events

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0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971030