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NCP1381 - Low Standby High Performance PWM Controller

General Description

Pin# Symbol 1 GTS_ADJ GTS Level Adjustment 2 BO Brown--out 3 DMG Detects the Zero Voltage Crossing Point 4 Timer Fault Timer 5 Skip/OVP Adjust the Skip Level 6 FB Feedback Signal 7 CS Current Sense Pin 8 GND 9 DRV The IC Ground The Driver Output 10 VCC VCC Input 11 GTS Directly P

Key Features

  • several efficient protection options like a) a short--circuit / overload detection independent of the auxiliary voltage b) an auto--recovery brown--out detection and c) an input to externally latch the circuit in case of Overvoltage Protection or Over Temperature Protection. Features.
  • Current--Mode Quasi--Resonant Operation.
  • Adjustable Line Over Power Protection.
  • Extremely Low Startup Current of 15 mA Maximum.
  • Soft--Skip Cycle Capability at Adjustable Peak Currents.
  • Plat.

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Datasheet Details

Part number NCP1381
Manufacturer onsemi
File Size 774.24 KB
Description Low Standby High Performance PWM Controller
Datasheet download datasheet NCP1381 Datasheet

Full PDF Text Transcription for NCP1381 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for NCP1381. For precise diagrams, and layout, please refer to the original PDF.

NCP1381, NCP1382 Low- Standby High Performance PWM Controller Housed in a SO--14 package, the NCP1381/82 includes everything needed to build rugged and efficient Quasi--R...

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1/82 includes everything needed to build rugged and efficient Quasi--Resonant (QR) Switching Power Supplies. When powered by a front--end Power Factor Correction circuitry, the NCP1381/82 automatically disconnects the PFC controller in low output loading conditions (with an adjustable level), thus improving the standby power. This is particularly well suited for medium to high power offline applications, e.g. notebook adapters. When the current setpoint falls below a given value, e.g. the output power demand diminishes, the IC automatically enters the so--called skip cycle mode and provides excellent efficiency at light lo

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