Topologie | Sperrwandler |
Eingangsspannung | -0.3-560 V |
Schaltfrequenz | 75-117 kHz |
Ausgang 1 | 5.5 V / 0 A |
IC-Revision | 1.2 |
The NCP1361/66 offers a new solution targeting output power levels from a few watts up to 20 W in a universal−mains flyback application. Due to a novel method this new controller offers a primary−side constant current control, saving secondary−side components to perform current regulation. The NCP1361/66 operates in valley−lockout quasi−resonant peak current mode control mode at nominal load to provide high efficiency. When the secondary−side power starts diminishing, the switching frequency naturally increases until a voltage−controlled oscillator (VCO) takes the lead, synchronizing the MOSFET turn−on in a drain−source voltage valley. The frequency is thus reduced by stepping into successive valleys until the number 4 is reached. Beyond this point, the frequency is linearly decreased in valley−switching mode until a minimum is hit. Valley lockout during the first four drain−source valleys prevents erratic discrete jumps and provides good efficiency in lighter load situations.
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | L (µH) | ISAT (A) | fres (MHz) | Z @ 100 MHz (Ω) | IR (A) | RDC max. (Ω) | Z @ 25 MHz (Ω) | L (mm) | W (mm) | H (mm) | Version | Muster | |
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7447462010 | SPEC | 8 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WE-TI Tonneninduktivität | 1 | 8 | 140 | – | 8.5 | 0.015 | – | 6 | 6 | 8.5 | Schrumpfschlauch | |||
7427930 | SPEC | 8 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WE-PBF Flachdraht-Hochstrom SMT-Ferrit | – | – | – | 42 | 16 | 0.0006 | 28 | 5 | 3 | 2.55 | nicht verklebt | |||
750370274 | SPEC | – | – | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | Offline Transformer | – | – | – | – | – | – | – | – | – | – | – |
Artikel Nr. | Datenblatt | Simulation | |
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7447462010 | SPEC | ||
7427930 | SPEC | ||
750370274 | SPEC | – |
Muster |
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Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | L (µH) | ISAT (A) | fres (MHz) | Z @ 100 MHz (Ω) | IR (A) | RDC max. (Ω) | Z @ 25 MHz (Ω) | L (mm) | W (mm) | H (mm) | Version | Muster |
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