LINEAR TECHNOLOGY LT3462ES6 me LT3462AES6 Hurihuri DC/DC Kaihurihuri

WHAKAMAHI

Ko te ara iahiko Whakaaturanga 670 e whakaatu ana i nga huringa teitei e rua, monolithic LT3462 me LT3462A kaitahuri hurihuri. Ko nga iahiko e rua he 5V urunga voltage me te -5V putanga ngaohiko-tau me te 100mA teitei te putanga o naianei. Ka whakamahia te topology kaitahuri SEPIC kino ki te whakaiti i te whakauru me te putanga voltage riporo. Ko te ara iahiko LT3462 he mea tino pai mo te tino pai me te 1.2MHz whakawhiti auau-quency. Ko te ara iahiko LT3462A kua arotauhia mo te iti o te ara iahiko me te profile me te 2.7MHz whakawhiti auau-aukati. He iti te rahinga tapuwae o nga iahiko e rua na te mea ko te ngohe Schottky whakauru ki roto i nga IC.

Hoahoa files mo tenei poari ara iahiko e wātea ana. Waea ki te wheketere LTC.
Ko te LT he tohu tohu na Linear Technology Corporation

Ripanga 1. Whakarāpopototanga Mahi (TA = 25°C)

PARAMETER	TE KAUPAPA	UARA
Whakauru Voltage		5V ± 10%
Putanga Voltage VOUT	IOUT = 0A ki te 100mA	-5V ± 3%
Morahi Putanga Naianei		100mA
Putanga Ripple Voltage	IOUT = 50mA , 20MHz BW	10mVP–P
Auautanga Whakawhiti Ingoa	LT3462ES6	1.2MHz
	LT3462AES6	2.7MHz
Te kaha	LT3462ES6, VIN = 5V, IOUT = 100mA	71% Tikanga
	LT3462AES6, VIN = 5V, IOUT = 100mA	61% Tikanga

NGICK TIKANGATANGA KAUPAPA KAUPAPA
He ngawari te whakarite iahiko whakaaturanga 670 hei arotake i te mahinga o te LT3462 me te LT3462A. Tirohia te Whakaahua 1 mo te tatūnga taputapu ine tika ka whai i nga tikanga i raro nei:

FAKATOKANGA: I te ine i te whakauru, te whakaputa voltage ripple, me tupato ki te karo i te mata whenua roa i runga i te rangahau oscilloscope. Inehia te whakaurunga, te whakaputanga voltage ripple ma te pa atu ki te pito rangahau puta noa i nga pito o Vin, Vout me GND. Tirohia te Whakaahua 2 mo te tikanga tirotiro whanui tika.

1. Whakanohoia nga peke ON/OFF e rua ki te turanga ON.
2. Ka mutu te hiko, honoa te hiko whakaurunga 5V ki te VIN me te GND. Honoa te uta i waenga i te VOUT me te GND. Tatūkē te nāianei uta ki te 0A (te iti rawa).
3. Whakakāhia te hiko i te whakauru.
   FAKATOKANGA: Me mohio kei te uru te voltage kore e neke ake i te 5.5V.
4. Tirohia mo te putanga tika voltages. Vout = -4.85V ki -5.15V.
   FAKATOKANGA: Mena karekau he putanga, momotuhia te utaina mo te wa poto kia kore ai te utaina kia teitei rawa.
5. Kia te putanga tika voltagkua whakaritea, whakatikahia nga taumahatanga i roto i te awhe mahi me te mataki i te vol putangatage ture, ripple voltage, kakama me etahi atu tawhā.

Whakaahua 1. Te Tatūnga Taputapu Ine Tika
(a) LT3462ES6 tatūnga whakamātautau, (b) LT3462AES6 tatūnga whakamātautau

HE ARATOHU WHAKATAKI KAUPAPA MO TE KAIWHITI WHAKATAHI 670

LT3462ES6 / LT3462AES6 WHAKAARO NGA KAUPAPA DC/DC

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