Seiko Instruments introduceert nieuwe timer voor auto-industrie
Seiko Instruments Inc. (SII) heeft de release van de nieuwe S-35720-serie van geïntegreerde schakelingen (IC’s) voor timers geïntroduceerd. De IC’s zijn geschikt voor het controleren van de relatieve tijd na een het stoppen van een motor, dankzij de optionele alarmtijd die kan variëren van 1 seconde tot 194 dagen.
De S-35720-serie is ontworpen om tegemoet te komen aan regels voor de exacte uitstoot door motorvoertuigen , zoals EURO 6. Daarnaast verhogen de IC’s de veiligheid van accu’s voor elektrische auto’s.
De nieuwe reguleringen vereisen aansturing van verscheidene facetten van de injectiemotor na het uitzetten van de motor. Voorbeelden zijn controle van katalysatoractivering op basis van verstreken tijd en temperatuur en regelmatig beheer van het volume van brandstofverstuiving (met gebruik van drukmetingen voor controle op brandstoflekken).
Seiko Instruments Releases New Convenience Timer IC for Automotive Applications
Seiko Instruments Inc. (SII) announced the release of the new S-35720
Series convenience timer IC suitable for managing relative time after
engine shut-down with its optional alarm time in 1 second increments
from 1 second to 194 days.
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The S-35720 Series is designed to help meet exacting automotive
emissions regulations such as EURO 6 and enhance EV battery safety.
These regulations call for the status management of different facets of
the Fi-ECU (fuel injection system) after engine shut-down. For example,
controlling the catalyst activation status based on elapsed time and
temperature, and periodically managing fuel vaporization volume (with
the use of pressure detection to check for fuel leaks).
These functions typically require an operating microcontroller. However,
by utilizing the S-35720 Series convenience timer, which has ultra-low
current consumption of only 200nA, the need to maintain power to the
microcontroller during non-measurement periods is eliminated,
drastically decreasing standby ECU (engine control unit) power
consumption.
The S-35720 Series is also suitable for detecting the down periods of
electric vehicles, i.e. the period of time the vehicle is not in use.
In addition, it can help monitor the battery management systems (BMS) of
electric vehicle batteries when they are not charged by notifying the
owner that the vehicle has not been used for a half year and detecting
time parameters such as the number of days during which the vehicle has
not been used.
The S-35720 series can output an alarm interrupt signal in a specified
time after a microcontroller stops. It compares the timer values with
the values set to the SET0 and SET1 pins, and then outputs an interrupt
signal when the values match. The timer is a 24-bit binary-up counter.
Four types of interrupt time are available depending on the SET0 and
SET1 pins settings. Customers can select a time-out type from one-shot
loop time-out, handshake time-out, and toggle operation.
It is designed to withstand the demanding automotive environment, where
temperatures run as high as 125 ˚C. The package is small 8-pin TMSOP.
Detailed information:
http://datasheet.sii-ic.com/en/automotive_convenience_timer/S3572
0_E.pdf
Please visit:
http://www.sii-ic.com/en/
Seiko Instruments Inc. (SII)
http://www.sii.co.jp/en/
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