MAX5974DETE+T Switching Controllers Active-Clamped, Spread-Spectrum, Current-Mode PWM Controllers
♠ Deskripsi Produk
| Atribut Produk | Nilai Atribut |
| Produsen: | Maxim Integrasi |
| Kategori produk: | Ngalih Controllers |
| RoHS: | Rincian |
| Topologi: | - |
| Jumlah Output: | 1 Output |
| Frekuensi Ngalih: | 600 kHz |
| Siklus tugas - Maks: | 82 % |
| Tegangan Input: | 10.5 V |
| Tegangan Output: | - |
| Output saiki: | 1 mA |
| Suhu Operasi Minimal: | - 40 C |
| Suhu operasi maksimum: | + 85 C |
| Gaya Pemasangan: | SMD/SMT |
| Paket / Case: | TQFN-16 |
| Packaging: | Reel |
| Packaging: | Potong Tape |
| Packaging: | MouseReel |
| Merk: | Maxim Integrasi |
| Wektu musim gugur: | 14 ns |
| Pasokan operasi saiki: | 1,8 mA |
| Tegangan suplai operasi: | 12 V nganti 21 V |
| Tipe produk: | Ngalih Controllers |
| Wektu munggah: | 27 ns |
| Seri: | MAX5974 |
| Jumlah Paket Pabrik: | 2500 |
| Subkategori: | PMIC - IC Manajemen Daya |
| Tipe: | Pengontrol PWM Mode Saiki |
| Bagian # Alias: | MAX5974 |
♠Aktif-Clamped, Spread-Spectrum, Pengontrol PWM Mode Saiki
MAX5974_ nyedhiyakake kontrol kanggo voltase input sudhut, clamped aktif, mode saiki PWM, konverter maju ing aplikasi Power-over-Ethernet (PoE) piranti (PD). MAX5974A / MAX5974C cocog kanggo jangkoan input universal utawa telekomunikasi, dene MAX5974B / MAX5974D uga nampung voltase input sing sithik nganti 10.5V.
Piranti kasebut kalebu sawetara fitur kanggo nambah efisiensi pasokan. Pembalap AUX daur ulang sewa arus magnetisasi tinimbang mbuwang ing sirkuit penjepit dissipative. Wektu mati sing bisa diprogram ing antarane AUX lan driver utama ngidini ngoper voltase nol (ZVS). Ing kahanan entheng, piranti nyuda frekuensi ngoper (frekuensi foldback) kanggo nyuda mundhut ganti.
MAX5974A / MAX5974B duwe sirkuit unik kanggo entuk regulasi output tanpa nggunakake optocoupler, dene MAX5974C / MAX5974D nggunakake metode umpan balik optocoupler tradisional. Penguat kesalahan internal kanthi referensi 1% migunani banget ing desain nonisolated, ngilangi kabutuhan regulator shunt eksternal.
Piranti kasebut nduweni clamp siklus tugas maksimum feed-forward unik sing ndadekake umur volt clamp maksimal sajrone kondisi transien ora gumantung saka voltase garis, ngidini panggunaan MOSFET daya kanthi voltase rusak sing luwih murah. Fitur dither ing frekuensi sing bisa diprogram nyedhiyakake operasi spektrum panyebaran EMI sing sithik.
MAX5974_ kasedhiya ing umur paket TQFN-EP 16-pin lan dirating kanggo operasi ing kisaran suhu -40°C nganti +85°C lan -40°C nganti +125°C.
● Peak Current-Mode Control, Active-Clamped Forward PWM Controller
● Regulasi Tanpa Optocoupler (MAX5974A/MAX5974B)
● Internal 1% Error Amplifier
● 100kHz nganti 600kHz Programmable ± 8% Frekuensi Ngalih, Sinkronisasi Nganti 1.2MHz
● Dithering Frekuensi Programmable kanggo Low-EMI, Operasi Spread-Spectrum
● Programmable Dead Time, PWM Soft-Start, Kompensasi Slope Saiki
● Programmable Feed-Forward Maximum Tugas-Cycle Clamp, 80% Watesan Maksimum
● Frekuensi Foldback kanggo High-Efficiency Light-Load Operation
● Internal Bootstrap UVLO karo Histeresis Gedhe
● 100μA (typ) Wiwitan Pasokan Saiki
● Limit Arus Puncak Siklus-by-Siklus Cepet, Tundha Propagasi Khas 35ns
● 115ns Saiki-Sense Internal Leading-Edge Blanking
● Output Short-Circuit Protection karo Mode Hiccup
● Watesan Saiki mbalikke kanggo Nyegah Saturasi Transformator Amarga Arus Balik
● Internal 18V Zener Clamp ing Supply Input
● 3mm x 3mm, Lead-Free, 16-Pin TQFN-EP
● PoE IEEE® 802.3af/at Powered Devices
● PD Daya Dhuwur (Ngluwihi 802.3af/ing Standar)
● Konverter DC-DC Maju Aktif-Clamped
● Telpon IP
● Node Akses Nirkabel
● Kamera Keamanan
