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reference designNCP1034

Onsemi NCP1034

100V Synchronous PWM Buck Controller

Overview

TopologyBuck Converter
Input voltage38-58 V
Switching frequency25-500 kHz
Output 15 V / 5 A
IC revision15

Description

The NCP1034 is a high voltage PWM controller designed for high performance synchronous Buck DC/DC applications with input voltages up to 100 V. The NCP1034 drives a pair of external N−MOSFETs. The switching frequency is programmable from 25 kHz up to 500 kHz allowing the flexibility to tune for efficiency and size. A synchronization feature allows the switching frequency to be set by an external source or output a synchronization signal to multiple NCP1034 controllers. The output voltage can be precisely regulated using the internally trimmed 1.25 V reference voltage for low voltage applications. Protection features include userprogrammable undervoltage lockout and hiccup current limit.

Features

  • High Voltage Operating up to 100 V
  • Programmable Switching Frequency up to 500 kHz
  • 2 A Output Drive Capability
  • Precision Reference Voltage (1.25 V)
  • Programmable Soft−Start with Prebiased Load Capability
  • Programmable Overcurrent Protection
  • Programmable Undervoltage Protection
  • Hiccup Current Limit Using MOSFET RDS(on) Sensing
  • External Frequency Synchronization
  • 16 Pin SOIC Package
  • This is a Pb−Free Device

Typical applications

  • Distributed Point of Load Power Architectures
  • Networking and Computing Voltage Regulator
  • 48 V Non−Isolated DC−DC Converter
  • Embedded Telecom Systems
  • General High Voltage DC−DC Converters

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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7443551131
SPECWE-HCI SMT Flat Wire High Current Inductor, 13 µH, 11.9 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
Inductance13 µH
Performance Rated Current11.9 A
Saturation Current @ 10%4 A
Saturation Current @ 30%9 A
DC Resistance11.2 mΩ
Self Resonant Frequency14 MHz
MaterialWE-PERM 
Packaging Unit400 
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