Datasheet4U Logo Datasheet4U.com

NCP1378 - PWM Current-Mode Controller

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

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 preview – NCP1378

Datasheet Details

Part number NCP1378
Manufacturer ON Semiconductor
File Size 298.27 KB
Description PWM Current-Mode Controller
Datasheet download datasheet NCP1378 Datasheet
Additional preview pages of the NCP1378 datasheet.

📁 Similar Datasheet

  • NCP1030 - Integrated DC-DC Converter (ON)
  • NCP1031 - Integrated DC-DC Converter (ON)
  • NCP1086 - 1.5A Adjustable and 3.3V Fixed Output Linear Regulator (ON)
  • NCP1212 - Current Mode PWM Controller (ON)
  • NCP1215 - Low Cost Variable OFF Time Switched Mode Power Supply Controller (ON)
  • NCP1216 - PWM Current-Mode Controller (ON)
  • NCP1225 - Low Standby Power SMPS Controller (ON)
  • NCP1232 - Microprocessor Monitor (ON)
  • NCP1280 - Active Clamp Voltage Mode PWM Controller (ON)
  • NCP1410 - 250 mA Sync-Rect PFM Step-Up DC-DC Converter (ON)
Other Datasheets by ON Semiconductor
  • 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

Full PDF Text Transcription

Click to expand full text
NCP1378 PWM Current- Mode Controller for Free- Running Quasi- Resonant Operation 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.
Published: |