Datasheet4U Logo Datasheet4U.com

NCP1378 - PWM Current-Mode Controller

General Description

Pin Symbol Function 1 Demag Core reset detection and OVP 2 FB Sets the peak current setpoint 3 CS Current sense input and skip cycle level selection 4 GND 5 Drv 6 VCC 7 NC 8 HV The IC ground Driving pulses Supplies the IC -- High--voltage pin Description The auxiliary FLYBACK signal ensure

Key Features

  • an efficient protective circuitry that, in presence of an overcurrent condition, disables the output pulses and enters a safe burst mode, trying to restart. Once the default has gone, the device auto- recovers. Finally an internal 1.0 ms Soft- Start eliminates the traditional startup stress. The NCP1378 is tailored for low voltage.

📥 Download Datasheet

Datasheet Details

Part number NCP1378
Manufacturer onsemi
File Size 298.27 KB
Description PWM Current-Mode Controller
Datasheet download datasheet NCP1378 Datasheet

Full PDF Text Transcription for NCP1378 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for NCP1378. For precise diagrams, and layout, please refer to the original PDF.

NCP1378 PWM Current- Mode Controller for Free- Running Quasi- Resonant Operation The NCP1378 combines a true current mode modulator and a demagnetization detector to ensu...

View more extracted text
s 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

More Datasheets from onsemi

Part Number Description
NCP137 Very Low Dropout Bias Rail CMOS Voltage Regulator
NCP1377 PWM Current-Mode Controller
NCP1377B PWM Current-Mode Controller
NCP1379 Quasi-Resonant Current-Mode Controller
NCP130 Very Low Dropout Bias Rail CMOS Voltage Regulator
NCP1308 PWM Current Mode Controller
NCP133 Very Low Dropout Bias Rail CMOS Voltage Regulator
NCP1336A Quasi-Resonant PWM Controller
NCP1336B Quasi-Resonant PWM Controller
NCP1337 PWM Current Mode Controller