EP3888212A1 - Analogspannungsprogrammierung - Google Patents
AnalogspannungsprogrammierungInfo
- Publication number
- EP3888212A1 EP3888212A1 EP20726088.6A EP20726088A EP3888212A1 EP 3888212 A1 EP3888212 A1 EP 3888212A1 EP 20726088 A EP20726088 A EP 20726088A EP 3888212 A1 EP3888212 A1 EP 3888212A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- circuit arrangement
- overcurrent protection
- analog circuit
- overcurrent
- 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.)
- Pending
Links
Classifications
-
- 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
- G05F1/468—Regulating voltage or current wherein the variable actually regulated by the final control device is DC characterised by reference voltage circuitry, e.g. soft start, remote shutdown
-
- 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
- G05F1/461—Regulating voltage or current wherein the variable actually regulated by the final control device is DC using an operational amplifier as final control device
-
- 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
- G05F1/462—Regulating voltage or current wherein the variable actually regulated by the final control device is DC as a function of the requirements of the load, e.g. delay, temperature, specific voltage/current characteristic
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C17/00—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards
- G11C17/14—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards in which contents are determined by selectively establishing, breaking or modifying connecting links by permanently altering the state of coupling elements, e.g. PROM
- G11C17/16—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards in which contents are determined by selectively establishing, breaking or modifying connecting links by permanently altering the state of coupling elements, e.g. PROM using electrically-fusible links
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C5/00—Details of stores covered by group G11C11/00
- G11C5/14—Power supply arrangements, e.g. power down, chip selection or deselection, layout of wirings or power grids, or multiple supply levels
- G11C5/147—Voltage reference generators, voltage or current regulators; Internally lowered supply levels; Compensation for voltage drops
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/22—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming
- H01C17/23—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by opening or closing resistor geometric tracks of predetermined resistive values, e.g. snapistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0027—Measuring means of, e.g. currents through or voltages across the switch
Definitions
- the invention relates to an analog circuit that makes it possible to adjust a voltage variably within defined limits.
- a required reference voltage can also be implemented using a simple voltage divider by equipping the printed circuit board, with the reference voltage then no longer being variably adjustable.
- programmable digital potentiometers are also known. With these, a resistor network can be digitally programmed to the desired value via a controller.
- the disadvantage here is that, in the case of an assembly option, the reference voltage is already set in the production process. However, it is desirable to determine the definition later in the customer application. The user should be able to freely choose the required reference voltage for his application within certain voltage limits in order to e.g. B. to be able to connect a motor of your choice to the respective electronics.
- the voltage must also be generated analog. If it is required for safety-relevant circuits, it must not be programmed / changed using software. can be changed.
- the invention is therefore based on the object of overcoming the aforementioned disadvantages and of providing a circuit arrangement which is safe to use and with which the possibility is made available of setting the voltage within certain voltage limits and preferably ensuring that the once the set voltage cannot be changed as intended.
- an analog circuit arrangement for this purpose for the variable setting of a voltage U out within defined voltage limits, comprising a non-inverting adder with a positive input, a voltage divider comprising at least a first stage and a second stage being connected to the positive input of the adder, At least one stage consists of a parallel connection of n resistors, which are each connected in series in a line path of the voltage divider to an overcurrent protection device, as well as at least one device to activate one or more of the overcurrent protection devices (e.g. by a specifically initiated overcurrent) to bring the respective affected line path interrupting state.
- the overcurrent protection devices are designed as fuses that are specifically burned out for deactivation.
- the reference voltage is read back via the ADC of a controller after the burn process is complete. This will detect irregularities or unsuccessfully completed burn-through processes.
- Transistor is realized whose base is connected to the collector of the NPN transistor via an intermediate tap of a wide Ren voltage divider.
- the base of the NPN transistor is controlled by a microcontroller (pC), preferably via a series resistor.
- the control signal for burning a respective fuse tion or overcurrent protection device can, for. B. from a classic I / O output of a microcontroller (pC) or from a needle bed adapter be mounted.
- the current flow into the base of the NPN transistor can be adjusted as required via a series resistor.
- a pull-down resistor between base and emitter prevents uncontrolled switching on of the NPN transistor.
- the base can also be connected to a further signal (LOCK), which ensures that the control signals can be "faded out” or “deactivated” if required.
- the base which is connected to the signal connection (LOCK), is connected to the emitter of the NPN transistor via the said pull-down resistor.
- collector of the PNP transistor of the (respective) device for triggering the overcurrent protection devices can be or are connected to each of these in order to selectively bring the respectively connected overcurrent protection device into a state that interrupts the relevant line path .
- a circuit for deactivating or locking the device is also provided, which means that the device is designed to keep that state stable in a conduction path and to prevent this from being changed subsequently, by z. B. another tripping process of a not yet tripped overcurrent protection device is prevented.
- Another aspect of the present invention relates to a method for variably setting a voltage U out within defined voltage limits using a circuit arrangement as described above with the following step or steps:
- Fig. 1 shows a circuit arrangement according to the invention for adjustable
- FIG. 2 shows a circuit arrangement according to the invention for triggering an overcurrent protection device or fuse
- FIG. 3 shows a representation of the time sequence of a triggering process of a fuse
- FIG. 4 shows a circuit arrangement according to the invention for locking the circuit arrangement for triggering an overcurrent protection device according to FIG. 2 and
- Fig. 5 shows an exemplary representation of the timing for a steep a desired voltage.
- FIG. 1 An analog circuit arrangement 1 according to the invention is shown in FIG.
- the analog circuit arrangement 1 is designed for the variable setting of a voltage U out within defined voltage limits at the non-inverting adder 10 shown.
- the adder 10 has a positive input 11 and a negative input 12.
- the analog ground reference potential is denoted by AGND.
- a two-stage voltage divider 20 is connected at the positive input 11 of the adder 10.
- the voltage divider 20 consists of a first stage 21 with a fixed resistor R f and a second stage 22.
- the second stage 22 consists of a parallel connection of 4 resistors R1, R2, R3 and R4, each in a parallel line path L1, L2, L3 and L4 between the ground reference potential and the center tap 23 on the voltage divider 20 are arranged.
- Each resistor R1, R2, R3 and R4 is connected in series with an overcurrent protection device F1, F2, F3, F4 in the respective line path L1, L2, L3 and L4.
- a resistor R x is provided in the conduction path that runs from the analog ground reference potential to the negative input 12 of the adder 10 and a further resistor R y is provided in the connection to the output at the adder 10.
- the voltage U ou t to be set is present.
- FIG. 2 shows a device 30 according to the invention for triggering an overcurrent protection device F1, F2, F3, F4.
- the device 30 is designed as an emitter circuit with negative current feedback, namely by means of an NPN transistor and a PNP transistor, the base being denoted by B, the emitter by E and the collector by C in each case.
- the base Bi of the PNP transistor is connected to the intermediate tap 31 of the voltage divider 33, formed from the two resistors R20, R30 Collector C 2 of the NPN transistor connected.
- the base B 2 of the NPN transistor is connected to a microcontroller mq via the series resistor R B , so that the base can be controlled by the microcontroller mq.
- the current flow into the base of the NPN transistor can be adjusted as desired via the series resistor R B.
- the base B2 is also connected to a signal connection (LOCK) which is connected to the locking circuit according to FIG.
- LOCK signal connection
- the purpose of this is to “hide” or “deactivate” the control signals as desired, so that the overcurrent protection devices F1, F2, F3, F4 that have not yet been triggered as intended are locked against improper triggering.
- the pull-down resistor R Dp prevents uncontrolled switching on of the NPN transistor.
- a resistor R B is also provided in front of the PNP transistor. This serves to limit the current flow through the PNP transistor and the voltage drop across the PNP transistor.
- FIG. 3 shows an illustration of the time sequence of a triggering process of a fuse.
- the voltage that drops across the fuse was recorded by measurement.
- the current flow generated by the transistor first causes an increase in potential at the fuse.
- the destruction process is in progress. After about 11 ms the fuse is completely destroyed and the entire applied voltage minus the saturation Voltage of the PNP transistor across the fuse.
- FIG. 4 shows a circuit arrangement according to the invention for locking the circuit arrangement for triggering an overcurrent protection device according to FIG. 2.
- the circuit 40 is also an emitter circuit with current negative feedback.
- the fuse F1 is used to keep the further NPN transistor in the blocked state. As soon as the fuse F1 has been triggered as intended or has blown, the base of the NPN transistor is pulled to a higher potential and this becomes conductive.
- All control signals of the device 30 for triggering the fuses, except for the signal for locking, are conducted via the illustrated diodes D to the collector of this NPN transistor. This has the result that the respective affected devices 30 can no longer be activated.
- the "setting process" of the reference voltage is irrevocably ended after the locking fuse has blown.
- FIG. 5 shows an exemplary representation of the time sequence for setting a desired voltage U out
- the invention is not limited in its implementation to the above specified preferred embodiments. Rather, a number of variants are conceivable which make use of the solution shown even in the case of fundamentally different designs.
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)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019114228.8A DE102019114228A1 (de) | 2019-05-28 | 2019-05-28 | Analogspannungsprogrammierung |
| PCT/EP2020/063430 WO2020239454A1 (de) | 2019-05-28 | 2020-05-14 | Analogspannungsprogrammierung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3888212A1 true EP3888212A1 (de) | 2021-10-06 |
Family
ID=70738557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20726088.6A Pending EP3888212A1 (de) | 2019-05-28 | 2020-05-14 | Analogspannungsprogrammierung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US11977400B2 (de) |
| EP (1) | EP3888212A1 (de) |
| KR (1) | KR102672303B1 (de) |
| CN (1) | CN211506890U (de) |
| DE (1) | DE102019114228A1 (de) |
| WO (1) | WO2020239454A1 (de) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0143493B1 (de) * | 1983-11-28 | 1991-06-19 | Centralab Inc. | Programmierbarer Dickschichtschaltkreis und Verfahren zu dessen Herstellung |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3441804A (en) * | 1966-05-02 | 1969-04-29 | Hughes Aircraft Co | Thin-film resistors |
| JPS55108019A (en) * | 1979-02-13 | 1980-08-19 | Advantest Corp | Reference voltage generator |
| US4686384A (en) * | 1985-08-09 | 1987-08-11 | Harris Corporation | Fuse programmable DC level generator |
| US5434498A (en) * | 1992-12-14 | 1995-07-18 | United Memories, Inc. | Fuse programmable voltage converter with a secondary tuning path |
| FR2708133B1 (fr) * | 1993-06-29 | 1995-09-08 | Sagem | Mémoire morte de faible capacité. |
| JP3074117B2 (ja) * | 1994-12-28 | 2000-08-07 | 東光株式会社 | 可変電圧回路 |
| JPH11338560A (ja) | 1998-05-29 | 1999-12-10 | Hitachi Ltd | 定電圧発生回路および半導体集積回路 |
| US20040145242A1 (en) * | 2001-08-08 | 2004-07-29 | Rodriguez Edward T | Power supply with electrical attributes programmable by manufacturer |
| US7110313B2 (en) * | 2005-01-04 | 2006-09-19 | Taiwan Semiconductor Manufacturing Company, Ltd. | Multiple-time electrical fuse programming circuit |
| JP4740771B2 (ja) * | 2006-03-03 | 2011-08-03 | 株式会社リコー | 分圧回路、その分圧回路を使用した定電圧回路及び電圧検出回路、分圧回路のトリミング方法 |
| TWI412235B (zh) | 2009-08-25 | 2013-10-11 | Nat Univ Chung Hsing | Digital analog converter |
| JP2014027141A (ja) * | 2012-07-27 | 2014-02-06 | Ricoh Co Ltd | トリミング回路及びトリミング方法、並びに電源装置、 |
| DE102017122497A1 (de) * | 2017-09-27 | 2019-03-28 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Vorrichtung und Verfahren zur Spannungsumschaltung |
-
2019
- 2019-05-28 DE DE102019114228.8A patent/DE102019114228A1/de active Pending
- 2019-10-30 CN CN201921843127.4U patent/CN211506890U/zh active Active
-
2020
- 2020-05-14 US US17/598,360 patent/US11977400B2/en active Active
- 2020-05-14 EP EP20726088.6A patent/EP3888212A1/de active Pending
- 2020-05-14 WO PCT/EP2020/063430 patent/WO2020239454A1/de not_active Ceased
- 2020-05-14 KR KR1020217025629A patent/KR102672303B1/ko active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0143493B1 (de) * | 1983-11-28 | 1991-06-19 | Centralab Inc. | Programmierbarer Dickschichtschaltkreis und Verfahren zu dessen Herstellung |
Also Published As
| Publication number | Publication date |
|---|---|
| CN211506890U (zh) | 2020-09-15 |
| WO2020239454A1 (de) | 2020-12-03 |
| DE102019114228A1 (de) | 2020-12-03 |
| KR102672303B1 (ko) | 2024-06-04 |
| US20220187860A1 (en) | 2022-06-16 |
| US11977400B2 (en) | 2024-05-07 |
| KR20220011610A (ko) | 2022-01-28 |
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