[introduction] the electrification of traffic system is in advanced drive support system (develop ceaselessly in ADAS) , include to drive automatically among them visual analysis, jockey assist and from adaptive control function. The capability of real time computation that process of application of intelligent join, safe crucial software and nerve network processing need to increase.

The electrification of traffic system is in advanced drive support system (develop ceaselessly in ADAS) , include to drive automatically among them visual analysis, jockey assist and from adaptive control function. The capability of real time computation that process of application of intelligent join, safe crucial software and nerve network processing need to increase.

Satisfy these high demand to need the much nucleus processor such as TDA4VH-Q1, its power comsumption exceeds 100 A. Hot property of the efficiency that the design challenge related to high power includes to achieve orbit of taller electric current, control and laden transient state are corresponding, security of contented function asks.

Offer ADAS to handle ability

TPS62876-Q1 step-down converter can help design personnel pass novel but the electric current that pile function implementation exceeds 30A, this function can come true to wait for TDA4VH-Q1 piece on system (the tall electricity that place of SoC) power supply needs. This series includes 15 to the parts of an apparatus inside 30A limits, use same enclose, and have supportable the stack function that exceeds 100A load current.

These parts of an apparatus conduce to pile not only the core power supply that is next generation ADAS SoC, and still conduce to heat up function through decreasing to heat is restricted and raise efficiency to rise.

Graph 1. Pile configures medium two TPS62876-Q1 parts of an apparatus

Pile undertakes operating through using chrysanthemum catenary method. Advocate control of parts of an apparatus compensates a network, POWERGOOD 1 times to bring a foot, ENABLE to leave foot and an I2C port. Share to realize optimal electric current, must undertake process designing to all parts of an apparatus in stack, in order to use identical rated electric current, same switch frequency and same voltaic level.

In stack advocate parts of an apparatus still installs output voltage and control its to adjust. If SYNCOUT is brought,is resistor of Ω of a 47k between foot and ground, criterion this parts of an apparatus will move as auxiliary parts of an apparatus. If SYNCOUT brings a foot to be tall impedance, criterion this equipment is made give priority to equipment to move. Graph 2 showed in printed circuit board on the stack configuration of implementation.

Graph 2. The give typical examples of converter of step-down of TPS62876-Q1 of 3 pile type evaluates module

The other function of series of this step-down converter includes:

Flagging compensation, shrink put nominal output voltage but the basis exports electricity (15 to 30A) the tolerance of laden transient state with be offerred better, conduce to reduce output electric capacity, achieve the solution of high power density that cost optimizes thereby. REGISTER brings a foot to enable or ban with flagging compensation, ban below acquiescent circumstance with.

Remote sensing supports more extensive SoC processor, have firmer output voltage demand, more surplus can be offerred during laden twinkling changes. The long-range induction line of this equipment receives laden point repeatedly directly, make you can install voltage with the precision of 0.8% .

Function of I2C interface supervisory system, appoint more than in temperature and output electric current the warning is sent when limitation. Still can use dynamic voltage to shrink put adjust output voltage 1.675V from 0.4V. If do not need I2C function, OK still will use same device through making SCL and SDA crural ground connection.

Functional security

Functional security is a of ADAS important facet, driving automatically especially respect. TPS62876-Q1 step-down converter provides the documentation of level of TI function security, include among them:

? Through applying industry dependability standard estimated the function of semiconductor component is safe real time fault rate
? Package breakdown mode reachs his to be based on equipment of main function distributing
? Cite analysis of crural breakdown mode
? Exterior monitor is added to make you can reach level of grade of automobile safety integrality in your design

Conclusion

To higher own level stride will need more calculating force, with be being offerred inside very short time higher resolution is mixed answer quickly. The built-in function such as artificial intelligence technology also increased to be opposite more the demand of the ADAS SoC processor of bad news report. Of TPS62876-Q1 series but pile sex can help you achieve the core power that exceeds 100A, what achieve higher level thereby is automatic drive.

What achieve higher level thereby is automatic drive.. Author: Canan Priess, heart state apparatus (engineer of sale of TI) car product)

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