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Partname: | NCP1378DR2G |
Description: | PWM current-mode controller with low start-up and UVLO levels for quasi-resonant operation in battery-based applications |
Manufacturer: | ON Semiconductor |
Datasheet: | PDF (199K). Click here to download *) |
The NCP1378 combines a true current mode modulator and a demagnetization detector to ensure full borderline/critical Conduction Mode in any load/line conditions and minimum drain voltage switching (Quasi-Resonant operation). Due to its inherent skip cycle capability, the controller enters burst mode as soon as the power demand falls below a predetermined level. As this happens at low peak current, no audible noise can be heard. An internal 8.0 ms timer prevents the free-run frequency to exceed 100 kHz (therefore below the 150 kHz CISPR-22 EMI starting limit), while the skip adjustment capability lets the user select the frequency at which the burst foldback takes place. |
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Click here to download NCP1378DR2G Datasheet*) |
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