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HIP5020 Datasheet Integrated-power Buck Converter Controller With Synchronous Rectification

Manufacturer: Intersil (now Renesas)

Overview: HIP5020 Data Sheet January 1997 File Number 4243 Integrated-Power Buck Converter Controller with Synchronous Rectification The HIP5020 is a high-efficiency, buck converter controller with synchronous rectification and integral power MOSFETs. Integrated current sensing eliminates the external resistor and saves power. The controller bines two methods of regulation: Current mode control for outstanding regulation response to large signal load transients, and Hysteretic mode control for high efficiency at low output currents. The HIP5020 controller offers a high degree of flexibility. Small ponents set the switching frequency, the soft-start interval and the load current boundary between Run and Hysteretic modes. These adjustments enable the designer to best optimize the trade-offs of cost, efficiency and size. The example application guide section illustrates these trade-offs with ponent and vendor suggestions for three circuit designs. These designs are suitable for use without modification.

General Description

and HIP5020 ponent specifications enable further optimization to meet specific requirements.

Key Features

  • High Efficiency - Above 95%.
  • Integrated N-Channel Synchronous Rectifier and Upper MOSFETs - 75mΩ Each.
  • Wide Input Voltage and Load Range - 4.5VDC to 18VDC (5 to 12 NiCd Battery Cells) - Up to 3.5ADC.
  • Automatically Switches Regulation Mode - Current Mode Control for Excellent Performance at High Load Currents - Hysteretic Control for High Efficiency at Light Load Currents.
  • Flexible and Easy to Use - Ready-to-Use Example.

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