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Order code: FLL99SD010115

L99SD01 APPLICATION AND DeVICe bLOCk DIAGrAM

Part number

S1 and S2 r

DSON

Maximum load current

Coil current profile and timings

Switching operations

L99SD01-e

60 mΩ

(maximum @ 25 °C)

14 A

Fully programmable

Above 10 kHz

L99SD01: STATe OF The ArT FOr CNG eLeCTrONIC INJeCTION SySTeMS

Inadditiontoguaranteeingfuelinjectionintegrityinanyconditionofbatteryvoltage,systemage,temperatureandkindofinjector,thelatest

standardsonCO

controlofboththecurrentflowingintheinjectorcoilandthedwelling-time.

Moreover,theautomotiverequirementsforhigherreliabilityandbetterdiagnostics,complementthedesignchallengemakingitevenmore

difficult.

ThankstoST’ssystem-in-packageapproach,whichintegratestherequiredpowerMOSFETsaswellasthecontrolandthediagnosticcircuitries

inasingledevice,theL99SD01naturallyprovideshigherreliabilityandsystemprotection.

Additionally,theintegratedclosed-loopcontroloftheinjectorcoilallowsreachingtheminimumcurrentrequiredtoensuretheproperinjector

coilbehavioratanybatteryvoltage,temperature,injectorproductionspreadandage.

TheL99SD01canbeusedwithoutanyre-programmingifthedefaultvaluesoftheinternalregistersmatchthetargetapplication.Onthe

configurethedevice.

TheL99SD01representsthestateoftheartinCNGelectronicinjectionsystems:morereliable,moreefficient,andmorecompact.

MCU

Protection and diagnostics

L99SD01

V

BAT

S2

S1

Current control circuitry

PowerSSO-36