WO2000024107A1 - Verpolschutzschaltung für eine leistungsendstufe mit mindestens einem highside-halbleiterschalter - Google Patents
Verpolschutzschaltung für eine leistungsendstufe mit mindestens einem highside-halbleiterschalter Download PDFInfo
- Publication number
- WO2000024107A1 WO2000024107A1 PCT/DE1999/003290 DE9903290W WO0024107A1 WO 2000024107 A1 WO2000024107 A1 WO 2000024107A1 DE 9903290 W DE9903290 W DE 9903290W WO 0024107 A1 WO0024107 A1 WO 0024107A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reverse polarity
- channel power
- output stage
- protection circuit
- power fet
- Prior art date
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
- H02H11/003—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection using a field effect transistor as protecting element in one of the supply lines
Definitions
- Reverse polarity protection circuit for a power amplifier with at least one high-side semiconductor switch
- the invention relates to a polarity reversal protection circuit for a power output stage with at least one high-side semiconductor switch, which requires a control voltage greater than the plus potential of the supply voltage and which is generated by an upstream electronics, in which an N-channel power supply in the supply of the Pius potential as polarity reversal protection FET is looped in when the
- the electronics are supplied via the reverse diode of the N-channel power FET into the supply line of the plus potential in such a way that they are switched on and off, ie. H. can be controlled.
- control voltage (s) fed from the electronics to the high-side semiconductor switch (s) for controlling the N-channel power FET of the polarity reversal protection is (are) fed back ).
- control voltage (s) of the electronics for the power output stage also for the control of the N-channel power FET of the polarity reversal protection, the charge pump and the oscillator, i.e. no additional components are required for switching through the N-channel power FET, which results in a significant simplification of the circuit board structure and a higher reliability of the circuit.
- the reverse polarity protection is provided during clock operation of the power output stage of the gate-source path of the N-channel power FET
- RC element is connected in parallel in parallel. This RC link becomes Smoothing of the control voltage is required for the N-channel power FET, which thus remains switched on continuously in clock mode.
- an extension of the polarity reversal protection circuit is characterized in that, in the case of a power output stage designed as a half or full-bridge circuit, only the control voltages supplied by the electronics to the high-side semiconductor switches connected to the plus potential of the supply voltage are supplied. The more positive control voltages of these high-side semiconductor switches are sufficient to control the N-channel power FET of the reverse polarity protection.
- Start signal can be switched on and off.
- the start and end of the reverse polarity protection control can thus be determined in the simplest way.
- Fig. 2 shows a polarity reversal protection circuit with a power amplifier constructed as a full bridge circuit consisting of four high-side semiconductor switches and a consumer.
- an N-channel power FET T with its source-drain path S-D is looped into the supply line of the plus potential + of the supply voltage U as reverse polarity protection.
- Power-FET's T with a polarized supply voltage U, which is connected to the negative pole (ground) of the supply voltage U, can be designed in a known manner and is therefore omitted in the context of the present invention. For this purpose, only the low-impedance connection of the polarity reversal protection when the power output stage is activated will be discussed in more detail.
- the plus potential + reaches through the reverse diode RD of the non-controlled N-channel power FET's T to the electronics E and the power output stage with the highside semiconductor switch T1 and the consumer V.
- Electronics E can be switched on and off via the starter signal st supplied to the input of electronics E. If the electronics E is switched on, it outputs a control signal for the highside semiconductor switch T1 at the output, which is more positive than the plus potential + of the supply voltage U.
- the high-side semiconductor switch T1 in the form of a high-side transistor requires this higher positive control voltage so that it comes into the low-resistance switching state and switches on the consumer V, ie connects it to the positive pole of the supply voltage U in a low-resistance manner.
- the N-channel power FET T of the polarity reversal protection is brought into the conductive, ie low-resistance state.
- the easiest way to achieve this is that the control voltage of the electronics E is also supplied to the gate connection G of the N-channel power FET's T. Since the N-channel power FET T is brought into the conductive state, the consumer V can be supplied with full current.
- the control signal at the output of the electronics E is a corresponding pulse train.
- the gate-source path GS of the N-channel power FET's T is then connected to an additional RC element, in parallel connection of a resistor R and a capacitor C f , in order to provide the N-channel power FET T also in the pulse pauses keep the pulse train conductive.
- the consumer V can also be switched on and off via a full bridge circuit comprising four highside semiconductor switches T1 to T4, which are switched in pairs, e.g. T1 and T4 or T2 and T3 can be controlled. If the consumer V is e.g. a motor, then by controlling the pairs T1 and
- the electronics E each give two of the outputs 1 and 4 or 2 and 3 control signals with different levels of positive potential, which is larger than that at the drain connections of the assigned highside semiconductor switches T1 and T4 or Is T2 and T3.
- the drive voltages for the highside semiconductor switches T1 and T2, which act between the gate and source connection, are tapped at the outputs 1 and 5 or 2 and 6.
- the control voltages of electronics E tapped from outputs 1 and 2 are decoupled via diodes D1 and D2 and the gate connection G of the N-
- the control voltage for connecting the N-channel power FET can be tapped from the control signal of the electronics E for the high-side semiconductor connected to the plus potential + of the supply voltage U, the RC element being made up of the resistor R and the capacitor C is only required in cyclical operation and no diode is required in the only control line which is fed back to protect against polarity reversal.
Landscapes
- Electronic Switches (AREA)
- Power Conversion In General (AREA)
- Dc-Dc Converters (AREA)
- Amplifiers (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000577753A JP2002528938A (ja) | 1998-10-20 | 1999-10-13 | 少なくとも1つのハイサイド半導体スイッチを有する電力出力段のための誤極性保護回路 |
| EP99957897A EP1123575A1 (de) | 1998-10-20 | 1999-10-13 | Verpolschutzschaltung für eine leistungsendstufe mit mindestens einem highside-halbleiterschalter |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1998148159 DE19848159A1 (de) | 1998-10-20 | 1998-10-20 | Schaltungsanordnung für eine elektronische Leistungsendstufe |
| DE19848159.4 | 1998-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000024107A1 true WO2000024107A1 (de) | 2000-04-27 |
Family
ID=7884954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE1999/003290 Ceased WO2000024107A1 (de) | 1998-10-20 | 1999-10-13 | Verpolschutzschaltung für eine leistungsendstufe mit mindestens einem highside-halbleiterschalter |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1123575A1 (de) |
| JP (1) | JP2002528938A (de) |
| DE (1) | DE19848159A1 (de) |
| WO (1) | WO2000024107A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10048184A1 (de) * | 2000-09-28 | 2002-04-11 | Delphi Tech Inc | Gegenspannungsschutzschaltung |
| DE10349629B4 (de) * | 2003-10-24 | 2015-09-03 | Robert Bosch Gmbh | Elektronischer Schaltkreis |
| JP2015165745A (ja) * | 2014-03-03 | 2015-09-17 | オムロンオートモーティブエレクトロニクス株式会社 | 電源供給回路 |
| JP6341224B2 (ja) * | 2016-04-05 | 2018-06-13 | 株式会社オートネットワーク技術研究所 | 給電制御装置 |
| JP6668897B2 (ja) | 2016-04-05 | 2020-03-18 | 株式会社オートネットワーク技術研究所 | 給電制御装置 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2682831A1 (fr) * | 1991-10-18 | 1993-04-23 | Bosch Gmbh Robert | Dispositif de commande pour des moteurs electriques dans des vehicules. |
| US5519557A (en) * | 1993-11-19 | 1996-05-21 | Chrysler Corporation | Power supply polarity reversal protection circuit |
| EP0806827A1 (de) * | 1996-05-09 | 1997-11-12 | Siemens Aktiengesellschaft | Verpolschutz-Schaltungsanordnung |
| EP0874438A2 (de) * | 1997-04-25 | 1998-10-28 | Robert Bosch Gmbh | Elektronische Schaltung mit Verpolschutz |
-
1998
- 1998-10-20 DE DE1998148159 patent/DE19848159A1/de not_active Withdrawn
-
1999
- 1999-10-13 WO PCT/DE1999/003290 patent/WO2000024107A1/de not_active Ceased
- 1999-10-13 EP EP99957897A patent/EP1123575A1/de not_active Ceased
- 1999-10-13 JP JP2000577753A patent/JP2002528938A/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2682831A1 (fr) * | 1991-10-18 | 1993-04-23 | Bosch Gmbh Robert | Dispositif de commande pour des moteurs electriques dans des vehicules. |
| US5519557A (en) * | 1993-11-19 | 1996-05-21 | Chrysler Corporation | Power supply polarity reversal protection circuit |
| EP0806827A1 (de) * | 1996-05-09 | 1997-11-12 | Siemens Aktiengesellschaft | Verpolschutz-Schaltungsanordnung |
| EP0874438A2 (de) * | 1997-04-25 | 1998-10-28 | Robert Bosch Gmbh | Elektronische Schaltung mit Verpolschutz |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1123575A1 (de) | 2001-08-16 |
| JP2002528938A (ja) | 2002-09-03 |
| DE19848159A1 (de) | 2000-04-27 |
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