DC - DC Voltage Step Down Switch Mode Buck Voltage Converter (LM2576/LM2596): 4 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25

Ua kom muaj txiaj ntsig tau txiaj ntsig hloov pauv yog ib txoj haujlwm nyuaj thiab txawm tias cov kws tsim txuj ci xav tau ntau yam kev tsim los kom raug

Tus hloov pauv phaus (hloov pauv qis) yog DC-rau-DC lub zog hloov pauv, uas nqis qis dua qhov hluav taws xob (thaum nce mus txog tam sim no) los ntawm nws cov tswv yim (khoom siv) rau nws cov zis (thauj khoom).

Hloov cov hloov pauv (xws li cov hloov pauv hloov pauv) muab lub zog muaj zog ntau dua li DC-rau-DC hloov pauv ntau dua li cov kab tswj hwm, uas yog cov kab hluav taws xob yooj yim uas txo qis qhov hluav taws xob los ntawm kev siv hluav taws xob kom sov, tab sis tsis nce qib tam sim no.

Kev ua haujlwm yooj yim ntawm tus hloov pauv phaus muaj qhov tam sim no hauv tus inductor tswj los ntawm ob lub keyboards (feem ntau yog transistor thiab diode). Hauv qhov hloov pauv qhov xav tau, txhua qhov khoom siv tau suav tias yog qhov zoo tshaj plaws. Tshwj xeeb, qhov hloov pauv thiab cov diode muaj xoom hluav taws xob poob thaum nyob thiab xoom tam sim no ntws thaum tawm, thiab cov inductor muaj xoom series tsis kam. Ntxiv mus, nws tau xav tias cov tswv yim thiab cov hluav taws xob tso tawm tsis hloov pauv ntawm lub voj voog (qhov no yuav cuam tshuam txog cov peev txheej tsim tawm raws li tsis muaj qhov kawg).

Kauj Ruam 1: LM2576/2596, 3-A Step-Down Voltage Regulator

Nta

1. 3.3-V, 5-V, 12-V, 15-V, thiab Hloov Kho Cov Lus Tso Tawm
2. Hloov kho qhov tso tawm qhov hluav taws xob ntau, 1.23 V txog 37 V (57 V rau HV Version)
3. Qhia 3-A Tam Sim No Tso Tawm
4. Cov tswv yim dav dav ntau yam: 40 V Mus txog 60 V rau HV Version
5. Yuav Tsum Xwb 4 Cov Khoom Sab Nraud
6. 52-kHz Tsau-Zaus Sab Hauv Oscillator
7. TTL-Shutdown Peev Xwm, Tsawg-Lub Hwj Chim Hom
8. Monolithic kev sib txuas ua ke uas muab txhua txoj haujlwm tseem ceeb rau kev nqis tes nqis (nqis) hloov pauv
9. Kev Ua Haujlwm Zoo

LM2576 Cov Ntaub Ntawv

Kauj Ruam 2: PCB Tsim

Kuv tau siv EasyEda los tsim 2-txheej PCB.

Yog leej twg xav tau kuv tuaj yeem tshaj tawm cov ntaub ntawv gerber rau koj.

Qhov kev txiav txim siab tseem ceeb tshaj plaws uas yuav tsum tau khaws cia yog lub hauv paus av ntawm lub diode, lub kaus mom thiab IC yuav tsum nyob ze li sai tau.

Tsis tas li ntawd txoj kab ntev ntawm cov zis Pin ntawm IC (tus pin 2) rau inductor yuav tsum luv li sai tau.

Kauj Ruam 3: Kev xaj cov PCBs

Tam sim no peb tau txais PCB tsim thiab nws yog lub sijhawm los xaj cov PCB. Txog qhov ntawd, koj tsuas yog yuav tsum mus rau JLCPCB.com, thiab nyem rau ntawm "QUOTE NOW" khawm.

JLCPCB kuj yog tus txhawb nqa txoj haujlwm no. JLCPCB (Shenzhen JLC Electronics Co., Ltd.), yog lub tuam txhab PCB loj tshaj plaws hauv Suav teb thiab cov tuam txhab tsim khoom lag luam tshwj xeeb tshwj xeeb hauv PCB sai sai thiab tsim PCB me me. Koj tuaj yeem xaj yam tsawg kawg ntawm 5 PCBs rau tsuas yog $ 2. Txhawm rau kom tau txais PCB tsim, xa cov ntaub ntawv gerber koj rub tawm hauv cov kauj ruam kawg. Rub tawm cov ntawv.zip lossis koj tseem tuaj yeem rub thiab poob cov ntaub ntawv gerber. Tom qab xa cov ntawv zip, koj yuav pom cov lus ua tiav hauv qab yog tias cov ntawv tau ua tiav tiav. Koj tuaj yeem tshuaj xyuas PCB hauv Gerber tus saib kom paub tseeb tias txhua yam zoo. Koj tuaj yeem saib ob sab saum toj thiab hauv qab ntawm PCB. Tom qab ua kom ntseeg tau tias PCB zoo, tam sim no koj tuaj yeem tso qhov kev txiav txim ntawm tus nqi tsim nyog. Koj tuaj yeem xaj 5 PCBs rau tsuas yog $ 2 ntxiv rau kev xa khoom. Txhawm rau txiav txim, nyem rau ntawm "SAVE TO CART" khawm. Kuv cov PCBs tau siv 2 hnub los tsim khoom thiab tuaj txog hauv 20 hnub siv tus qauv sau npe xa khoom xa tuaj. Muaj cov kev xaiv xa khoom sai kuj muaj. PCBs tau ntim tau zoo thiab qhov zoo yog qhov zoo tiag tiag.

Kauj Ruam 4: Sib dhos thiab ua haujlwm

Ua ntej xaj PCBs, ib txwm nco ntsoov tias kev teeb tsa thiab kev ua haujlwm tau ua haujlwm.

Kuv tau sim lub Circuit Court ntawm perf board thiab tom qab ntawd PCBs hauv tsev thiab tom qab ntawd kuv xaj cov PCBs.

Hauv kuv qhov Circuit kuv tau ntxiv cov ntsiab lus ntxiv rau tus lej 4 thiab 5 kom txuas nrog arduino lossis lwm yam MCU.

Tus pin 5 tuaj yeem siv ua qhov hloov pauv/tawm (nquag LOW), yog li thaum tus lej 5 tau tsaws hauv av lub pob hloov pauv tau qhib thiab thaum tus lej PIN 5 siab dua 1.8V tus hloov pauv tawm.

Tus lej 4 yog tus lej tawm tswv yim thiab nrog kev pab los ntawm PWM los ntawm arduino/MCU peb tuaj yeem tswj hwm qhov hluav taws xob tso tawm siv qhov txuas ntxiv ntawm tus tiv thaiv kab hluav taws xob sib cais.

Thaum kawg kuv yuav hais tias LM2576 lossis LM2596 yog ib qho ntawm qhov yooj yim tshaj plaws hloov pauv IC los ua haujlwm nrog thiab tau yooj yim muaj nyob hauv khw hauv khw hluav taws xob thiab hauv online.

Tsis tas li IC no tau zam txim ntau thiab ua haujlwm nrog cov qauv tsim tsis zoo.

Kuv yuav pom zoo siv heatsinks ntawm IC txhawm rau txhawm rau lawv lub neej.

Saib tag nrho cov lus qhia ntawm YT

qhia tag nrho में में youtube पर