CN213338388U

CN213338388U - Controller for multi-channel constant current output and high-side output

Info

Publication number: CN213338388U
Application number: CN202022725133.9U
Authority: CN
Inventors: 丁晓晨; 刘大震; 张颢; 李静
Original assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Current assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-06-01
Anticipated expiration: 2030-11-23

Abstract

The utility model relates to a car light controller specifically is a controller of multichannel constant current output and high limit output, has the driving force of function lamps such as turn signal lamp, the daytime running lamp, fog lamp, back combination lamp, stop lamp, back position lamp and indoor lamp to CAN provide the multichannel power that contains high limit output and constant current output, it is a plurality of including MCU module and CAN module, the MCU module is connected its characterized in that with CAN module one: still include the SBC chip, BOOST BOOST module and multichannel BUCK step-down module, the SBC chip includes CAN communication module and LIN communication module, BOOST BOOST module passes through the SBC chip and is connected with the MCU module, BOOST BOOST module still is connected with multichannel BUCK step-down module, the MCU module also is connected with multichannel BUCK step-down module.

Description

Controller for multi-channel constant current output and high-side output

Technical Field

The utility model relates to a car light controller specifically is a controller of multichannel constant current output and high limit output.

Background

At present, aiming at the conditions that existing drive channels are few and the integration level of a communication circuit is low in the market, the number of single-chip microcomputers and communication chips is generally increased in the drive to improve the circuit channels, but the whole chip loop needs to be increased when the chips are increased, a larger board surface space is needed, the cost is improved on one hand, and various requirements during installation are also increased on the other hand.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model overcomes current defect, provides a controller of multichannel constant current output and high limit output, has the driving force of function lamps such as turn signal lamp, the daytime running lamp, fog lamp, back combination lamp, stop lamp, back position lamp and indoor lamp to can provide the multichannel power that contains high limit output and constant current output.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a controller of multichannel constant current output and high limit output, includes that MCU module and CAN module are a plurality of, the MCU module is connected with CAN module one, still includes the SBC chip, and BOOST steps up module and multichannel BUCK step down module, the SBC chip includes CAN communication module and LIN communication module, BOOST steps up the module and is connected with the MCU module through the SBC chip, BOOST steps up the module and still is connected with multichannel BUCK step down module, the MCU module also is connected with multichannel BUCK step down module.

Preferably, the BOOST control circuit further comprises a first high-side switch and a second high-side switch, wherein the first high-side switch and the second high-side switch are both connected with the MCU module, and the first high-side switch and the second high-side switch are also respectively connected with the BOOST module.

Preferably, the SBC chip further includes an LDO communication module.

The utility model discloses beneficial effect: the utility model discloses a controller of multichannel constant current output and high limit output can provide stable high limit output and constant current output under the condition that uses a plurality of high limit switches and step-up and step-down circuit, and all has certain driving force to the signal lamp of the overwhelming majority, has with low costs, the integrated level is high, take up the advantage that the space is few.

Drawings

Fig. 1 is a block diagram of the controller for multi-channel constant current output and high-side output according to the present invention.

Detailed Description

The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is not intended to limit the invention.

A controller with multi-channel constant current output and high-side output comprises a plurality of MCU modules and a plurality of CAN modules, wherein the MCU modules are connected with the CAN modules, and further comprises an SBC chip, a BOOST boosting module and a multi-channel BUCK voltage reducing module; the high-side switch I and the high-side switch II are both connected with the MCU module, and are also respectively connected with the BOOST boosting module; still include LDO communication module in the SBC chip.

During specific implementation, a CAN message is input at the front end, and the communication module is complete and high in integration level through the SBC chip, so that the increasingly improved requirements of bandwidth and data rate flexibility of a vehicle-mounted network are met. The SBC integrated system links the analog power supply and other signals together, particularly adds some protection functions, and is greatly optimized compared with a single CAN transceiver and a single LIN transceiver.

In the controller, a plurality of high-side switches can be applied, so that the cost and complexity of the control application of the automobile lamp and the motor are reduced. High-side switches are a cost-effective integration of analog circuits and powerful load, output drivers. The design of such system-in-package devices results in robust high current load control for critical automotive applications.

In the controller, stable constant current output is provided besides a high-side output channel, a BUCK-BOOST circuit composed of a BOOST module and a BUCK voltage-reducing module outputs stable power to a lamp, and a high-side switch can be arranged in a BUCK _ BOOST circuit and then outputs any voltage value to supply power to a load.

The high integration, high level of integration and higher reliability of front-end SBC chips in the controller may enable a lighter weight and lower cost design. The transition from classic CAN to flexible data rate CAN (CAN FD) requires solutions to make up for the gap between the availability of the CAN FD controller processor and also helps to increase the number of classic CAN/CAN FD buses, the chip uses high-side control, the voltage passes through the controller and then the lamp, reducing the load for BCM.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides a controller of multichannel constant current output and high limit output, includes that MCU module and CAN module are one a plurality of, the MCU module is connected its characterized in that with CAN module one: still include the SBC chip, BOOST BOOST module and multichannel BUCK step-down module, the SBC chip includes CAN communication module and LIN communication module, BOOST BOOST module passes through the SBC chip and is connected with the MCU module, BOOST BOOST module still is connected with multichannel BUCK step-down module, the MCU module also is connected with multichannel BUCK step-down module.

2. The controller for multi-channel constant current output and high side output according to claim 1, wherein: the high-side switch I and the high-side switch II are both connected with the MCU module, and are also respectively connected with the BOOST boosting module.

3. The controller for multi-channel constant current output and high side output according to claim 1, wherein: still include LDO communication module in the SBC chip.