Bayanan Bayani na ST VL53L8CX
Gabatarwa
Lokacin amfani da ci gaba da yanayin, VL53L8CX module yawanci yana cinye 215 mW na iko. Saboda haka, yana buƙatar kulawa da zafin jiki a hankali don tabbatar da ingantaccen aikin na'urar da kuma guje wa zafi mai yawa.
Tebur 1. Babban sigogi na thermal
| Siga | Alama | Min. | Buga | Max. | Naúrar |
| Amfanin wutar lantarki | P | - | 215 (1) | 320 | mW |
| Yanayin junction (2) | TJ | - | - | 110 | °C |
| Mutuwar thermal juriya | mutu | - | - | 43 | °C/W |
| Yanayin zafin aiki | T | -30 | 25 | 85 | °C |
- AVDD = 2.8 V da IOVDD = 1.8 V na yawan amfani na yanzu.
- Don hana rufewar thermal, dole ne a kiyaye zafin mahaɗin ƙasa ƙasa da 110 ° C.
Abubuwan ƙirar thermal
Alamar θ ana amfani da ita gabaɗaya don nuna juriya na thermal wanda shine ma'auni na bambancin zafin jiki wanda abu ko abu ke tsayayya da kwararar zafi. Domin misaliample, lokacin canja wurin daga abu mai zafi (kamar siliki junction) zuwa mai sanyi (kamar yanayin yanayin baya ko iska na yanayi).
Tsarin juriya na thermal yana nunawa a ƙasa kuma ana auna shi a °C/W:
θ = ΔT/P
Inda ΔT shine haɓakar yanayin haɗin gwiwa kuma P shine ɓarnawar wutar lantarki. Don haka, ga example, na'urar da ke da juriya na thermal na 100 ° C/W yana nuna bambancin zafin jiki na 100 ° C don lalata wutar lantarki na 1 W kamar yadda aka auna tsakanin maki biyu. Tsarin tsari shine kamar haka:
- θpcb = TJ - TA ÷ P - θdie
- θpcb = 110 - TA ÷ P - 43
Inda:
- TJ shine yanayin junction
- TA shine yanayin yanayi
- θdie shine juriya na thermal
- θpcb shine juriya na thermal na PCB ko sassauƙa
Juriya na thermal na PCB ko sassauƙa
Matsakaicin izinin haɗin haɗin gwiwa na VL53L8CX shine 110°C. Ana ƙididdige madaidaicin izinin PCB ko juriya na zafi kamar yadda aka nuna a ƙasa. Wannan ƙididdigewa don ɓarnawar wutar lantarki ne na 0.320 W, da aikin na'urar a 85 ° C (mafi munin yanayin yanayin ƙayyadaddun yanayin yanayi).
- θpcb = TJ - TA ÷ P - θdie
- θpcb = 110 - 85 ÷ 0.320 - 43
- θpcb = 35°C/W
Lura: Don tabbatar da cewa matsakaicin zafin mahaɗar ba a ƙetare ba, kuma don tabbatar da ingantaccen tsarin aiki, kar a wuce maƙasudin juriya na zafi na sama. Don tsarin al'ada da ke watsar da 320mW, matsakaicin haɓakar zafin jiki shine <11 ° C. Ana ba da shawarar wannan don ingantaccen aiki na VL53L8CX
Layout da thermal jagororin
Yi amfani da jagororin masu zuwa lokacin zana PCB ko sassauƙa:
- Yawaita murfin jan karfe akan PCB don ƙara yawan zafin jiki na allo.
- Yi amfani da module, thermal pad B4 wanda aka nuna a Hoto 2. VL53L8CX pinout da kushin zafi. Ƙara babban rectangle guda ɗaya na manna solder. Ya kamata ya zama daidai girman da kushin zafi (rectangles takwas) kamar yadda yake a cikin Hoto 3. Shawarwari don kushin zafi kuma ta kan PCB. STMicroelectronics ya ba da shawarar a dinka ta takwas daga sama zuwa kasa, don haka abin rufe fuska na kasa yana buɗe kuma an fallasa kushin.
- Yi amfani da faɗin bin diddigi don duk sigina musamman wuta da sigina na ƙasa. Bibiya kuma haɗa su cikin jiragen wuta kusa da inda zai yiwu.
- Ƙara zafi mai nutsewa zuwa chassis ko firam don rarraba zafi daga na'urar.
- Kar a sanya kusa da sauran abubuwan zafi masu zafi.
- Sanya na'urar a cikin ƙarancin wuta lokacin da ba a amfani da shi.
Tarihin bita
| Kwanan wata | Sigar | Canje-canje |
| 30-Janairu-2023 | 1 | Sakin farko |
MUHIMMAN SANARWA – KU KARANTA A HANKALI
STMicroelectronics NV da rassan sa ("ST") sun tanadi haƙƙin yin canje-canje, gyare-gyare, haɓakawa, gyare-gyare, da haɓakawa ga samfuran ST da/ko ga wannan takaddar a kowane lokaci ba tare da sanarwa ba. Ya kamata masu siye su sami sabbin bayanai masu dacewa akan samfuran ST kafin yin oda. Ana siyar da samfuran ST bisa ga sharuɗɗa da sharuɗɗan siyarwa na ST a wurin lokacin amincewa. Masu siye ke da alhakin zaɓi, zaɓi, da amfani da samfuran ST kuma ST ba ta ɗaukar alhakin taimakon aikace-aikacen ko ƙirar samfuran masu siye. Babu lasisi, bayyananne ko fayyace, ga kowane haƙƙin mallakar fasaha da ST ke bayarwa a nan. Sake siyar da samfuran ST tare da tanadi daban-daban da bayanan da aka gindaya a ciki zai ɓata kowane garantin da ST ya bayar don irin wannan samfurin. ST da tambarin ST alamun kasuwanci ne na ST. Don ƙarin bayani game da alamun kasuwanci na ST, koma zuwa www.st.com/trademarks. Duk sauran samfuran ko sunayen sabis mallakin masu su ne. Bayanin da ke cikin wannan takaddar ya maye gurbin bayanan da aka bayar a baya a cikin kowane juzu'in wannan takaddar.
AN5897 - Rev 1 - Janairu 2023
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Takardu / Albarkatu
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Bayanan Bayani na ST VL53L8CX [pdf] Manual mai amfani VL53L8CX, Module Sensor Module, VL53L8CX Rage Sensor Module, Module Sensor, Module |
