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reference designNCP1581

Onsemi NCP1581

High Frequency Synchronous Step Down PWM Controller for Tracking Applications

Overview

TopologyBuck Converter
Input voltage8-20 V
Switching frequency370-430 kHz
Output 13 V / 10 A

Description

The NCP1581 controller IC is designed to provide a simple synchronous buck regulator for on−board DC to DC applications in a 14−pin SOIC. The NCP1581 is designed specifically for tracking applications by providing the track input.The NCP1581 operates at a fixed internal 400 kHz switching frequency allowing the use of small external components. The device features a programmable soft start set by an external capacitor, under−voltage lockout and output under−voltage detection that latches off the device when an output short is detected.

Features

  • Power up Sequencing / Tracking
  • Enable Input
  • Internal 400 kHz Oscillator
  • Programmable Soft−Start
  • Fixed Frequency Voltage Mode
  • Voltage Mode Adaptive Deadtime
  • This is a Pb−Free Device

Typical applications

  • Graphics Cards
  • Tracking Applications
  • Game Consoles
  • General DC to DC Converters
  • Computing Peripheral Voltage Regulators

More information

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Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
SamplesAvailability & Sample
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744313120
SPECWE-HCI SMT Flat Wire High Current Inductor, 1.2 µH, 28.8 A

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance1.2 µH
Performance Rated Current28.8 A
Saturation Current @ 10%10 A
Saturation Current @ 30%28 A
DC Resistance2.85 mΩ
Self Resonant Frequency58 MHz
MaterialSuperflux 
Packaging Unit400 
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