Electronic control unit for controlling external half-bridge power output stages and an electric motor operated drive with electronic control unit
View Patent ↗In order to control an electromotive drive, a control unit has control modules for controlling half-bridge end power stages. Two of the control modules are pre-configured for alternatively controlling a commutator motor or a brushless electric motor via two half-bridge end power stages. A third control module can be subsequently configured to control a third half-bridge end power stage or two individual switching elements. An electromotive drive ideally can be configured with the stated control unit.
1. An electronic control unit for controlling at least three external half-bridge power output stages, the electronic control unit comprising:
control modules, one of said control modules connected to each of the half-bridge power output stages, said control modules including a first control module, a second control module and at least one third control module all having outputs, said first and second control modules being jointly pre-configured for controlling an electric motor via two of the half-bridge power output stages on a first common configuration level, said at least one third control module being on a second configuration level and freely configurable such that said outputs of said third control module are available for controlling an individual phase of the electric motor, and such that in an alternate configuration, one said outputs of said third control module is available for controlling a first power switching element for operating a first load and another one said outputs of said third control module is available for controlling a second power switching element independently with respect to said first power switching element, the second powers witching element for operating a second load.
2. The control unit according to claim 1 , wherein on said second configuration level, said first and second control modules can be selectively configured for controlling a commutator motor or for controlling two phases of a three-phase brushlessly commutated electric motor.
3. The control unit according to claim 1 , further comprising an additional control module for controlling an external electrical voltage supply.
4. The control unit according to claim 1 , further comprising an additional control module with at least one other signal output.
5. The control unit according to claim 1 , further comprising an interface for connecting to an external, higher-order arithmetic logic unit.
6. The control unit according to claim 1 , wherein at least one of said control module for a respective one of the half-bridge power output stages has functional elements for at least one of transistor control, current sensing, overload detection and overload protection.
7. The control unit according to claim 1 , further comprising integrated circuits forming said first, second and third control modules.
8. The control unit according to claim 7 , wherein said first and second control modules are application-specific integrated circuits and said third control module is a software-controlled microcontroller.
9. The control unit according to claim 7 , further comprising an integrated device, said control modules are combined in said integrated device.
10. The control unit according to claim 1 , further comprising an interface for connecting to a microcontroller.
11. An electric motor operated drive, comprising:
a motor housing;
coils disposed in said motor housing;
permanent magnets disposed in said motor housing;
a configuration of half-bridge power output stages for supplying voltage to said coils; and
an electronic control unit connected to and controlling said half-bridge power output stages, said electronic control unit disposed one of in said motor housing and on said motor housing, said electronic control unit containing:
control modules, one of said control modules connected to each of said half-bridge power output stages, said control modules including a first control module, a second control module and at least one third control module all having outputs, said first and second control modules being jointly pre-configured for controlling the electric motor operated drive via two of said half-bridge power output stages on a first common configuration level, said at least one third control module being on a second configuration level and freely configurable such that said outputs of said third control module are available for controlling an individual phase of the electric motor operated drive and such that in an alternate configuration, one said outputs of said third control module is available for controlling a first powers witching element for operating a first load and another one said outputs of said third control module is available for controlling a second power switching element independently with respect to said first power switching element, the second power switching element for operating a second load.