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The RT8815A is a 2/1 phase synchronous Buck PWM controller which is optimized for high performance graphic microprocessor and computer applications. The IC integrates a Constant-On-Time (COT) PWM controller, two MOSFET drivers with internal bootstrap diodes, as well as channel current balance and protection functions including Over-Voltage Protection (OVP), Under-Voltage Protection (UVP), current limit, and thermal shutdown into the WQFN-20L 3x3 package. <p align="justify">The RT8815A adopts R<sub>DS(ON)</sub> current sensing technique. Current limit is accomplished through continuous inductor-current-sense, while R<sub>DS(ON)</sub> current sensing is used for accurate channel current balance. Using the method of current sampling utilizes the best advantages of each technique. </p><p align="justify">The RT8815A features external reference input and PWM-VID dynamic output voltage control, in which the feedback voltage is regulated and tracks external input reference voltage. Other features include adjustable switching frequency, dynamic phase number control, internal soft-start, power good indicator, and enable functions.</p>
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  • Dual-Phase PWM Controller
  • Two Embedded MOSFET Drivers and Embedded Switching Boot Diode
  • External Reference Input Control
  • PWM-VID Dynamic Voltage Control
  • Dynamic Phase Number Control
  • Lossless RDS(ON) Current Sensing for Current Balance
  • Internal Soft-Start
  • Adjustable Current Limit Threshold
  • Adjustable Switching Frequency
  • UVP/OVP Protection
  • Shoot Through Protection and Short Pulse Free Technology
  • Support an Ultra-Low Output Voltage as Standby Voltage
  • Thermal Shutdown
  • Power Good Indicator
  • RoHS Compliant and Halogen Free
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CPU/GPU Core Power Supply<br />Notebook PC Memory Power Supply<br />Chipset/RAM Power Supply<br />Generic DC-DC Power Regulator
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