Binciken Gwajin LTC1871 Step Up 3-35V shigarwa zuwa 3.5 zuwa 35V fitarwa booster module

Binciken Gwajin LTC1871 Step Up 3-35V shigarwa zuwa 3.5 zuwa 35V fitarwa booster module

Gabatarwa

Wannan jagorar tana ba da cikakken bita da gwajin na'urar haɓaka wutar lantarki (boost converter) mai tushen LTC1871. Wannan na'urar mafita ce mai ƙarfi da amfani ga ayyukan da ke buƙatar ƙarfin lantarki mafi girma daga tushen wutar lantarki mai ƙarancin ƙarfi. Tana karɓar kewayon shigarwa mai faɗi na 3 zuwa 35V DC kuma tana iya haɓaka shi zuwa fitarwa mai daidaitacce, mai iya daidaitawa har zuwa 35V DC. Ƙarfin wutar lantarki mai girma, saboda MOSFET na waje, ya sa ta dace da ayyuka daban-daban masu buƙata.

Gyara:

Da fatan za a gyara 6.666µA zuwa 666µA

Ga wasu amfani na zahiri na wannan nau'in na'urar haɓaka:

• Kunna igiyoyin LED: Ɗauki igiyoyin LED masu ƙarfin lantarki mai girma (misali, 12V ko 24V) daga batirin lithium-ion guda ɗaya na 3.7V ko bankin wutar USB na 5V.
• Na'urorin lantarki masu ɗaukuwa: Ƙirƙiri samar da wutar lantarki na musamman don lasifika masu ɗaukuwa, nunin fuska, ko wasu na'urori waɗanda ke buƙatar ƙarfin lantarki mafi girma fiye da abin da batirinka ke bayarwa.
• Tsarin wutar hasken rana: Haɓaka ƙarfin lantarki mai canzawa daga ƙaramin panel na hasken rana zuwa ƙarfin lantarki mai tsayayye don cajin batura ko kunna na'urorin auna.
• Samar da wutar lantarki na tebur: Yi amfani da shi azaman samar da wutar lantarki mai sauƙi, mai iya daidaitawa don gwada wasu da'irori, yana ba da har zuwa 35V daga adaftar 12V na yau da kullun.
• Ayyukan mota: Haɓaka tsarin wutar lantarki na mota na 12V zuwa 24V ko 30V don kayan aiki na musamman.

Wannan bita zai rufe kayan aikin na'urar, muhimman abubuwan da ke cikinta, da jerin gwaje-gwajen nauyi don tantance aikin ta na zahiri da iyakokin wutar lantarki. Za mu kuma bincika mu'amalar mai amfani, gami da nuni da maɓallai.

Bayanin Kayan Aiki

Na'urar tana da ƙarami kuma an gina ta da kyau, tana da tsari mai haske don sauƙin haɗawa cikin ayyukanka. Bari mu duba kayan jiki da muhimman abubuwan da ke cikinta.

Allon yana da tsawon kusan 67.2mm da faɗin 43.8mm. Mafi tsayin abubuwan sune capacitors, waɗanda ke ɗaga tsayin duka zuwa kusan 11.8mm. Na'urar tana da nauyin kusan 20.7 grams, kuma wannan yana ƙaruwa zuwa 25 grams idan an haɗa heatsink ɗin da aka haɗa. Hakanan tana da ramuka huɗu na hawa don screws kuma tana zuwa tare da standoffs don amintaccen shigarwa akan chassis ko kwantena. (a cikin bidiyo a 01:44)

Ga rarrabuwar muhimman abubuwan da ke kan allon:

• Terminals na Shigarwa/Fitarwa: Allon yana da terminals na screw da aka yiwa alama a sarari don shigarwa (IN+) da fitarwa (OUT+). Shigarwa yana karɓar 3-35V, kuma fitarwa ana iya daidaita shi har zuwa 35V.
• Nuni da Maɓallai: Nuni mai lambobi uku na seven-segment yana nuna ƙarfin lantarki na yanzu. An samar da maɓallai biyu: ɗaya don canza nuni tsakanin nuna ƙarfin shigarwa ko fitarwa, da wani don kashe fitarwa gaba ɗaya. (a cikin bidiyo a 01:00)
• Daidaita Ƙarfin Lantarki: Ƙaramin potentiometer akan allon yana ba ka damar daidaita ƙarfin fitarwa da hannu. Juya shi zuwa agogo yana ƙara ƙarfin lantarki. (a cikin bidiyo a 05:36)
• Mai Sarrafa LTC1871: Wannan shine babban IC na boost converter. Yana aiki a kan kewayon shigarwa mai faɗi na 2.5V zuwa 36V kuma yana sarrafa canjin MOSFET na wutar lantarki. (a cikin bidiyo a 02:42)
• MOSFET na Wutar Lantarki: Wannan MOSFET ne na N-channel mai ƙarfin wutar lantarki mai girma (model 4184) wanda ke ɗaukar nauyin canjin wutar lantarki. An ƙididdige shi har zuwa 40V da 50A, amma an tsara na'urar don bayarwa har zuwa 6A. Wannan shine abin da ke buƙatar heatsink. (a cikin bidiyo a 03:20)
• Diode na Schottky: Ana amfani da diode na Schottky biyu don kariya daga juyar da polarity. Idan ka haɗa wutar shigarwa da polarity mara kyau bisa kuskure, wannan diode zai yi short-circuit kuma ya kare mafi ƙarancin abubuwa kamar mai sarrafa da MOSFET daga lalacewa. (a cikin bidiyo a 03:53)

Jagorar Wayoyi

Haɗa wayoyi na wannan na'urar abu ne mai sauƙi. Tana da saiti biyu na terminals na screw don shigarwa da fitarwa. An yiwa polarity alama a sarari akan allon.

Don haɗa tushen wutar lantarki da nauyinka:

1. Haɗa Shigarwa: Haɗa tushen wutar DC ɗinka (3-35V) zuwa toshe ɗin da aka yiwa alama "IN+". Tabbatar ka daidaita wayoyin positive da negative daidai.
2. Haɗa Fitarwa: Haɗa nauyinka (na'urar da kake son kunna) zuwa toshe ɗin da aka yiwa alama "OUT+". Sake daidaita polarity.
3. Daidaita Ƙarfin Lantarki: Kafin haɗa nauyi mai mahimmanci, yana da kyau ka kunna na'urar, yi amfani da maɓallin don nuna ƙarfin fitarwa, sannan ka daidaita potentiometer zuwa ƙarfin lantarki da kake so.

Na'urar tana da kariya daga juyar da polarity ta hanyar diode na Schottky, wanda zai yi short-circuit idan an haɗa shigarwa ba daidai ba, yana hana lalacewar muhimman abubuwa. Wannan yana ba ka lokaci don gyara wayoyi ba tare da lalata na'urar ba. (a cikin bidiyo a 04:03)

Aiki na Kai Tsaye / Nunawa

Babban abin da ke cikin wannan bita shine gwajin nauyi na zahiri don ganin yadda na'urar ke aiki a ƙarƙashin yanayi na gaske. An gudanar da gwaje-gwajen ta amfani da shigarwa na 12V, nauyin lantarki, da ma'aunin wutar lantarki don auna wutar shigarwa. An haɗa heatsink ɗin zuwa MOSFET don dukkan gwaje-gwaje, wanda ke da mahimmanci don sakamako mai inganci. (a cikin bidiyo a 05:11)

Gwaji 1: Shigarwa na 12V zuwa Fitarwa na 30V

Wannan gwaji ya nufa don ganin ko na'urar za ta iya bayar da 6A da aka tallata a babban rabon haɓaka. Sakamakon ya kasance kamar haka:

• 6 Amps: Naúrar ya gaza. Ƙarfin fitarwa ya faɗi zuwa 15V. (a cikin bidiyo a 07:35)
• 5 Amps: Naúrar ta gaza kuma, tare da raguwar ƙarfin lantarki mai yawa. (a cikin bidiyo a 08:00)
• 4 Amps: Naúrar ma ta gaza. (a cikin bidiyo a 08:34)
• 1 Amp: Naúrar ta samar da 1A cikin nasara a tsayayyen 30V. An auna ƙarfin shigarwa a 3.6A, wanda ke nuna jan wutar 43.2W a shigarwa don isar da 30W a fitarwa. (a cikin bidiyo a 08:48)

Gwaji na 2: Shigar 12V zuwa Fitar 24V

Tare da ƙaramin ƙarfin fitarwa, ikon ɗaukar nauyi ya inganta, amma har yanzu bai kai da'awar 6A ba.

• 6 Amps: Naúrar ta gaza, tare da faɗuwar ƙarfin fitarwa zuwa 14V. (a cikin bidiyo a 10:04)
• 5 Amps: Naúrar ta gaza, tare da raguwar ƙarfin lantarki mai yawa. (a cikin bidiyo a 10:23)
• 4 Amps: Naúrar ta gaza, ta faɗi zuwa 17V. (a cikin bidiyo a 10:30)
• 3 Amps: Naúrar ta gaza. (a cikin bidiyo a 10:43)
• 2 Amps: Naúrar ta samar da 2A cikin nasara a tsayayyen 24V. An auna ƙarfin shigarwa a 5.3A. (a cikin bidiyo a 10:47)

Gwaji na 3: Shigar 12V zuwa Fitar 16V

Wannan gwaji ya yi amfani da ƙaramin rabon haɓakawa, wanda ba ya matsa wa mai juyarwa sosai.

• 4.5 Amps: Naúrar ta samar da 4.5A cikin nasara a tsayayyen 16V. Akwai ɗan raguwar ƙarfin lantarki, don haka an rage ƙarfin zuwa 4.2A, inda ya kasance mai tsayayye sosai. Ƙarfin shigarwa ya kasance 6.5A. (a cikin bidiyo a 11:09)

Gwaji na 4: Shigar 5V zuwa Fitar 12V

Wannan gwaji yana nuna yanayin amfani na yau da kullun: haɓaka tushen USB 5V zuwa 12V.

• 2.4 Amps: Naúrar ta samar da 2.4A cikin nasara a tsayayyen 12V. Ƙarfin shigarwa ya kasance 6.2A. An bar wannan saitin yana aiki sama da mintuna 10 kuma ya yi aiki da kyau. (a cikin bidiyo a 12:20)

Ƙarshe daga Gwaje-gwaje

Gwaje-gwajen sun nuna cewa yayin da aka tallata naúrar don ɗaukar har zuwa 6A, wannan yana yiwuwa ne kawai a ƙananan rabon haɓakawa. Matsakaicin ƙarfin da zai iya samarwa yana raguwa yayin da bambanci tsakanin ƙarfin shigarwa da fitarwa ke ƙaruwa. Sakamakon ya kasance kamar haka:

• 12V zuwa 30V: Matsakaicin ƙarfin shine 1A.
• 12V zuwa 24V: Matsakaicin ƙarfin shine 2A.
• 12V zuwa 16V: Matsakaicin ƙarfin shine ~4.5A.
• 5V zuwa 12V: Matsakaicin ƙarfin shine 2.4A.

Duk waɗannan sakamakon suna aiki ne kawai tare da haɗe mai zafi. Ba tare da shi ba, aikin zai yi muni sosai kuma MOSFET na iya yin zafi fiye da kima. (a cikin bidiyo a 13:07)

Babuka

• [00:06] Gabatarwa ga Naúrar Haɓakawa LTC1871
• [00:49] Duban Kayan Aiki da Muhimman Abubuwa
• [01:44] Girman Jiki da Nauyi
• [02:42] Bincike Mai Zurfi a cikin Mai Sarrafa LTC1871
• [03:20] MOSFET na Wutar Lantarki da Diode Schottky
• [05:35] Gwajin Daidaita Ƙarfin Lantarki da Aiki Ba tare da Nauyi Ba
• [07:35] Gwajin Nauyi: Fitar 12V zuwa 30V
• [10:04] Gwajin Nauyi: Fitar 12V zuwa 24V
• [11:09] Gwajin Nauyi: Fitar 12V zuwa 16V
• [12:20] Gwajin Nauyi: Fitar 5V zuwa 12V
• [12:56] Ƙarshen Aiki da Taƙaitawa

Hotuna

LTC1871-step-up-2

LTC1871-step-up-1

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LTC1871-step-up-2

LTC1871-step-up-1

LTC1871-step-up-4

LTC1871-step-up-3