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ISL9502 - Two-Phase PWM Controller

Key Features

  • Precision Two-phase Buck PWM controller - 0.5% System Accuracy Over Temperature - Active Voltage Positioning Capability.
  • Internal Gate Driver with 2A Driving Capability.
  • Superior Load Transient Response.
  • Dynamic Phase Adding/Dropping.
  • Voltage Selection Input - 6-Bit VSEL Input - 0.500V to 1.500V in 25mV Steps - Supports VSEL Change On-The-Fly.
  • Multiple Current-Sensing Schemes Supported - Lossless Inductor DCR Current Sensing - Precision Resi.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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® ISL9502 Data Sheet July 17, 2006 FN9275.1 Two-Phase PWM Controller for Graphics Processor Units (GPU) Increase in GPU clock frequency is accompanied by associated increase in the demand for power and transientcurrent slew rate. At the same time, the voltage tolerance requirement during steady-state and transient operation is becoming more stringent of advanced GPU. The ISL9502 is a two-phase PWM controller with embedded gate drivers, which is tailored to meet the power and dynamic requirements. The two-phase buck converter uses two interleaved channels to effectively double the output voltage ripple frequency and thereby reduce output voltage ripple amplitude with fewer components, lower component cost, reduced power dissipation, and smaller real estate area.