iimpawu zemveliso:
UHLOBO | CHAZA |
udidi | ISekethe eDityanisiweyo (IC) I-PMIC - i-Voltage Regulators - i-DC DC Switching Regulators |
umenzi | Texas Instruments |
uthotho | - |
Iphakheji | Iteyiphu kunye neReel (TR)Shear Band (CT)I-Digi-Reel® Custom Reel |
ubume bemveliso | ikhona evenkileni |
Umsebenzi | Buck |
uqwalaselo lwemveliso | nje |
itopology | Buck |
uhlobo lwemveliso | iyahlengahlengiswa |
Inani leziphumo | 3 |
I-Voltage-Igalelo (uMzu) | 4.5V |
I-Voltage-Input (Ubukhulu) | 18V |
Umbane-Imveliso (min/elungisiweyo) | 0.8V |
Voltage-Imveliso (Eyona iphezulu) | 18V |
Okwangoku -Isiphumo | 3A, 2A |
Ukuphindaphinda - tshintsha | 300kHz ~ 2.2MHz |
Ungqamaniso loLungisanisi | Ewe |
Ubushushu bokusebenza | -40°C ~ 125°C (TJ) |
uhlobo lofakelo | Uhlobo lweNtaba yoMphezulu |
Ipakethe/Indawo ebiyelweyo | I-40-VFQFN eveziweyo yePad |
Supplier Device Packaging | 40-VQFN (6x6) |
Inombolo yemveliso esisiseko | TPS65251 |
Ulwahlulo lokusiNgqongileyo kunye noThunyelo ngaphandle:
IIMPAWU | CHAZA |
Ubume beRoHS | Iyahambelana neenkcukacha ze-ROHS3 |
iNqanaba lokuSenza ukufuma (MSL) | 3 (168 iiyure) |
FIKA ubume | Iimveliso ezinga-REACH |
ECCN | I-EAR99 |
HTSUS | 8542.39.0001 |
TPS65251 4.5-V ukuya 18-V Igalelo, High-yangoku, Synchronous Inyathelo-Phantsi iBuck ezintathu
Ukutshintshela kunye ne-FET eDityanisiweyo
1
1 Iimpawu
1
•
Uluhlu oluBanzi loBonelelo lwe-Voltage (4.5 ukuya kwi-18 V)
•
0.8 V, 1% Ukuchaneka kweReferensi
•
Ukulayisha ngokuqhubekayo: 3 A (Buck 1),
2 A (iBuck 2 kunye nesi-3)
•
Ubuninzi bangoku: 3.5 A (Buck 1),
2.5 A (iBuck 2 kunye ne-3)
•
I-Adjustable Switching Frequency
I-300 kHz ukuya kwi-2.2 MHz Isetwe nguMxhasi Wangaphandle
•
Ezinikezelweyo zisebenze ngeBhaka nganye
•
Iphini yoNgqamaniso yaNgaphandle yeOscillator
•
Yangaphandle Yenza / Ulandelelwano kunye nezikhonkwane zokuQala ezithambileyo
•
Umda Wangoku Onohlengahlengiswayo Osekwe NguMxhasi Wangaphandle
•
Izikhonkwane zokuQala ezithambileyo
•
Ulawulo Lwemo Yangoku Ngembuyekezo elula
Isekethe
•
Powergood
•
UkuSebenza okuKhethekileyo kweModi yoMbane oPhantsi woKhanya
Imithwalo
•
Iphakheji ye-VQFN, i-40-Pin 6 mm × 6 mm RHA
2 izicelo
•
Cwangcisa Iibhokisi eziphezulu
•
IDVD yeBlu-ray
•
DVR
•
DTV
•
Umsindo wemoto/iVidiyo
•
Ikhamera yoKhuseleko
3 Inkcazo
I-TPS65251 ibonisa ububanzi obuyi-synchronous ezintathu
uluhlu lwegalelo eliphezulu abaguquli bebhaka abasebenzayo.I
iziguquli ziyilelwe ukwenza lula usetyenziso lwayo
ngelixa unika umyili ukhetho lokwandisa zabo
ukusetyenziswa ngokwenjongo yesicelo.
Abaguquleli banokusebenza kwi-5-, 9-, 12- okanye 15-V
iinkqubo kunye neetransistor zamandla ezidibeneyo.I
I-voltage yemveliso inokumiselwa ngaphandle usebenzisa i-resistor
isahluli kulo naliphi na ixabiso phakathi kwe-0.8 V kwaye isondele kwi
unikezelo lwegalelo.Isiguquli ngasinye senza ukuba iphini ibekho
ivumela ukuqalisa ukulibaziseka ngeenjongo zolandelelwano,
isikhonkwane sokuqalisa esithambileyo esivumela ixesha lokuqalisa elithambileyo elilungelelanisiweyo
ukukhetha i-capacitor ethambileyo, kunye nomda wangoku
(RLIMx) iphini elenza umyili alungelelanise okwangoku
umda ngokukhetha isichasi sangaphandle kunye nokwandisa i
ukhetho lwe-inductor.Ulawulo lwemowudi yangoku luvumela a
imbuyekezo RC elula.
Ukutshintsha rhoqo kwabaguquli banako nokuba
ibekwe kunye ne-resistor yangaphandle exhunywe kwi-ROSC
iphini okanye inokudityaniswa kwiwotshi yangaphandle
iqhagamshelwe kwi-SYNC pin ukuba iyafuneka.Ukutshintsha
abalawuli benzelwe ukusebenza ukusuka kwi-300 kHz ukuya
2.2 MHz.I-180 ° ngaphandle komsebenzi wesigaba phakathi kweBuck
1 kunye neBuck 2, 3 (iBuck 2 kunye ne-3 zibaleka kwisigaba)
inciphisa igalelo lokucoca iimfuno.