I-ST VL53L8CX Range Sensor module
Isingeniso
Uma isetshenziswa kumodi eqhubekayo, imojula ye-VL53L8CX ivamise ukusebenzisa amandla angu-215 mW. Ngakho-ke, kudinga ukuphathwa okushisayo okucophelelayo ukuze kuqinisekiswe ukusebenza kahle kwedivayisi nokugwema ukushisa ngokweqile.
Ithebula 1. Imingcele ye-thermal eyinhloko
| Ipharamitha | Uphawu | Okuncane. | Thayipha. | Ubukhulu. | Iyunithi |
| Ukusetshenziswa kwamandla | P | — | 215 (1) | 320 | mW |
| Izinga lokushisa lokuhlangana (2) | TJ | — | — | 110 | °C |
| Fa ukumelana nokushisa | θukufa | — | — | 43 | °C/W |
| Ibanga lokushisa elisebenzayo | T | -30 | 25 | 85 | °C |
- I-AVDD = 2.8 V ne-IOVDD = 1.8 V yokusetshenziswa kwamanje okujwayelekile.
- Ukuze uvimbele ukucisha kwe-thermal, izinga lokushisa lokuhlangana kufanele ligcinwe lingaphansi kuka-110 °C.
Izisekelo zokuklama ezishisayo
Uphawu θ ngokuvamile lusetshenziselwa ukuchaza ukumelana nokushisa okuyisilinganiso somehluko wezinga lokushisa lapho into noma impahla imelana nokugeleza kokushisa. Okwesiboneloampi-le, lapho idluliswa isuka entweni eshisayo (efana nokuhlangana kwe-silicon) iya kwepholile (njengemojula yezinga lokushisa elingemuva noma umoya ozungezile).
Ifomula yokumelana nokushisa iboniswe ngezansi futhi ikalwa ngo-°C/W:
θ = ΔT/P
Lapho i-ΔT iwukukhuphuka kwezinga lokushisa le-junction kanye no-P ukuchithwa kwamandla. Ngakho, ngokwesiboneloampi-le, idivayisi enokumelana nokushisa okungu-100 °C/W ibonisa umehluko wezinga lokushisa ongu-100°C wokushabalaliswa kwamandla okungu-1 W njengoba kulinganiswa phakathi kwamaphoyinti amabili okubhekisela. Ifomula imi kanje:
- θpcb = TJ − TA ÷ P − θdie
- θpcb = 110 − TA ÷ P − 43
Kuphi:
- I-TJ izinga lokushisa lokuhlangana
- I-TA izinga lokushisa le-ambient
- I-θdie ukumelana ne-thermal
- I-θpcb ukumelana okushisayo kwe-PCB noma i-flex
Ukumelana nokushisa kwe-PCB noma i-flex
Izinga lokushisa eliphezulu elivunyelwe le-junction ye-VL53L8CX ngu-110°C. Ubukhulu obuvunyelwe be-PCB noma ukumelana nokushisa okuguquguqukayo kubalwa njengoba kukhonjisiwe ngezansi. Lesi sibalo esokuhlakazwa kwamandla angu-0.320 W, nokusebenza kwedivayisi ku-85°C (isimo esibi kakhulu sezinga lokushisa eliphakeme elicacisiwe le-ambient).
- θpcb = TJ − TA ÷ P − θdie
- θpcb = 110 − 85 ÷ 0.320 − 43
- θpcb = 35°C/W
Qaphela: Ukuqinisekisa ukuthi izinga lokushisa eliphezulu le-junction aweqiwe, futhi ukuze uqinisekise ukusebenza kwemojula ephezulu, ungeqi ukumelana nokushisa okuhlosiwe okungenhla. Ohlelweni olujwayelekile oluhlakaza ama-320 mW, izinga lokushisa eliphakeme liyi-< 11°C. Lokhu kunconyelwe ukusebenza kahle kwe-VL53L8CX
Isakhiwo nemihlahlandlela yokushisa
Sebenzisa imihlahlandlela elandelayo lapho uklama imojula ye-PCB noma i-flex:
- Khulisa ikhava yethusi ku-PCB ukuze ukwandise ukuguquguquka okushisayo kwebhodi.
- Sebenzisa imojuli, i-thermal pad B4 ekhonjiswe kuMfanekiso 2. VL53L8CX pinout kanye ne-thermal pad. Engeza unxande owodwa omkhulu wokunamathisela i-solder. Kufanele ilingane nephedi eshisayo (onxande abayisishiyagalombili) ngokomfanekiso 3 ngamunye. Isincomo sephedi eshisayo kanye ne-PCB. I-STMicroelectronics incoma ukuthi kuthungwe ama-vias ayisishiyagalombili ukusuka phezulu kuye phansi, ukuze imaski engezansi ivuleke futhi iphedi ivele obala.
- Sebenzisa ukulandelela okubanzi kuwo wonke amasignali ikakhulukazi amandla namasignali aphansi. Landela futhi uwaxhume ezindizeni zikagesi eziseduze lapho kungenzeka khona.
- Engeza ukucwiliswa kokushisa ku-chassis noma amafreyimu ukuze usabalalise ukushisa kude nedivayisi.
- Ungabeki eduze kwezinye izingxenye ezishisayo.
- Beka idivayisi esimweni samandla aphansi uma ingasetshenziswa.
Umlando wokubuyekeza
| Usuku | Inguqulo | Izinguquko |
| 30-Jan-2023 | 1 | Ukukhishwa kokuqala |
ISAZISO ESIBALULEKILE – FUNDA NGOKUQAPHELA
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AN5897 - Rev 1 - January 2023
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Amadokhumenti / Izinsiza
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I-ST VL53L8CX Range Sensor module [pdf] Imaniwali yosebenzisayo I-VL53L8CX, i-Ranging Sensor Module, i-VL53L8CX I-Range Sensor Module, i-Sensor Module, i-Module |
