MAX5974DETE+T Switching Controllers Active-Clamped, Spread-Spectrum, Current-Mode PWM Controllers
♠ Product Description
| Yam khoom | Tus nqi tsim nyog |
| Chaw tsim tshuaj paus: | Maxim Integrated |
| Yam khoom: | Hloov Controllers |
| RoHS: | Paub meej |
| Topology: | - |
| Number of Outputs: | 1 Tso zis |
| Hloov zaus: | 600 kHz |
| Duty Cycle - Max: | 82% |
| Input voltage: | 10,5 V |
| Cov zis voltage: | - |
| Cov zis tam sim no: | 1 mA |
| Yam tsawg kawg nkaus ua haujlwm kub: | -40 C ua |
| Ua haujlwm kub siab tshaj plaws: | +85 C |
| Mounting Style: | SMD / SMT |
| Pob / Case: | TXF-16 |
| Ntim: | Rov qab |
| Ntim: | Txiav daim kab xev |
| Ntim: | MouseReel |
| Hom Tshuaj: | Maxim Integrated |
| Caij nplooj zeeg: | 14 nsq |
| Kev khiav hauj lwm muab khoom tam sim no: | 1.8 mA |
| Kev khiav hauj lwm voltage: | 12V rau 21V |
| Yam khoom: | Hloov Controllers |
| Sijhawm sawv: | 27 nsq |
| Series: | TIAB SA 5974 |
| Factory Pack Quantity: | 2500 |
| Cov qeb: | PMIC - Tswj fais fab ICs |
| Hom: | Tam sim no hom PWM Controllers |
| Ntu # Aliases: | TIAB SA 5974 |
♠Active-Clamped, Spread-Spectrum, Current-Mode PWM Controllers
MAX5974_ muab kev tswj rau dav-input-voltage, nquag-clamped, tam sim no-hom PWM, rau pem hauv ntej converters hauv Power-over-Ethernet (PoE) powered device (PD) appli cations. Lub MAX5974A / MAX5974C yog qhov zoo-tsim rau universal lossis telecom input range, thaum lub MAX5974B / MAX5974D kuj haum rau cov input voltage qis mus rau 10.5V.
Cov khoom siv suav nrog ntau yam nta los txhim kho cov khoom siv tau zoo. Tus neeg tsav tsheb AUX rov siv dua cov hlau nplaum current es tsis txhob nkim nws nyob rau hauv lub dissipative clamp Circuit Court. Programmable tuag lub sij hawm nruab nrab ntawm AUX thiab lub ntsiab tsav tsheb tso cai rau xoom-voltage switching (ZVS). Nyob rau hauv lub teeb-load tej yam kev mob, cov pab kiag li lawm txo lub switching frequency (frequency foldback) kom txo tau switching losses.
MAX5974A/MAX5974B feature tshwj xeeb circuitry kom ua tiav cov kev cai tso zis yam tsis siv lub optocoupler, thaum lub MAX5974C/MAX5974D siv cov tsoos optocoupler tawm tswv yim txoj kev. Ib qho kev ua yuam kev sab hauv amplifier nrog 1% kev siv yog qhov muaj txiaj ntsig zoo hauv kev tsim qauv tsis zoo, tshem tawm qhov xav tau rau kev tswj hwm sab nraud shunt.
Cov khoom siv tshwj xeeb tshwj xeeb pub-mus rau qhov siab tshaj plaws lub luag haujlwm-kho lub voj voog uas ua rau lub hnub nyoog siab tshaj plaws ntawm lub hnub nyoog thaum lub sijhawm tsis muaj kev ywj pheej ntawm cov kab hluav taws xob, tso cai rau kev siv lub zog MOSFET nrog qis dua qhov hluav taws xob tawg. Lub programmable zaus dither ing feature muab qis-EMI, kis-spectrum ua haujlwm.
MAX5974_ muaj nyob rau hauv 16-pin TQFN-EP pob hnub nyoog thiab raug ntsuas rau kev ua haujlwm dhau ntawm -40 ° C txog +85 ° C thiab -40 ° C txog + 125 ° C kub ntau yam.
● Peak Current-Mode Control, Active-Clamped Forward PWM Controller
● Kev Cai Tsis Muaj Optocoupler (MAX5974A / MAX5974B)
● Sab hauv 1% yuam kev Amplifier
● 100kHz txog 600kHz Programmable ± 8% Hloov zaus, synchronization txog 1.2MHz
● Programmable Frequency Dithering rau Low-EMI, Spread-Spectrum Operation
● Programmable Dead Time, PWM Soft-Start, Current Slope Compensation
● Programmable Feed-Forward Maximum Duty-Cycle Clamp, 80% Ntau Tshaj
● Zaus Foldback rau High-Efficiency Light-Load Operation
● Internal Bootstrap UVLO nrog Loj Hysteresis
● 100μA (typ) Startup Supply Tam sim no
● Fast Cycle-by-Cycle Peak Tam sim no-Limit, 35ns Hom Kev Tshaj Tawm qeeb
● 115ns Current-Sense Internal Leading-Edge Blanking
● Tso zis luv-Circuit Protection nrog Hiccup hom
● Rov qab txwv tam sim no los tiv thaiv Transformer saturation Vim rov qab tam sim no
● Sab hauv 18V Zener Clamp ntawm Supply Input
● 3mm x 3mm, Lead-Free, 16-Pin TQFN-EP
● PoE IEEE® 802.3af/at Powered Devices
● High-Power PD (Tshaj qhov 802.3af/at Standard)
● Active-Clamped Forward DC-DC Converters
● IP Xov tooj
● Wireless Access Nodes
● Lub koob yees duab kev ruaj ntseg
