Evaluation Board For 8V To 14V Single Phase Synchronous Buck Pulse Width Modulation Controller With Integrated Gate Drivers

The ISL8104 is a 8V to 14V synchronous PWM controllerwith integrated MOSFET drivers. The controller features theability to safely start-up into prebiased output loads andprovides protection against overcurrent fault events.Overcurrent protection is implemented using top-sideMOSFET rDS(ON) sensing, eliminating the need for a currentsensing resistor. The ISL8104 employs voltage-mode control with dual-edgemodulation to achieve fast transient response. The operatingfrequency is adjustable from 50kHz to 1.5MHz with full (0%to 100%) PWM duty cycle capability. The error amplifierfeatures a 15MHz (typ) gain-bandwidth product and 6V/µsslew rate enabling high converter bandwidth. The output voltage of the converter can be regulated to aslow as 0.597V with a tolerance of ±1.0% over thecommercial temperature range (0°C to +70°C), and ±1.5%over industrial temperature range (-40°C to +85°C).Provided in the QFN package, a SS pin and REFIN pinenable supply sequencing and voltage tracking functionality.

• +8V ±5% to +14V ±10% Bias Voltage Range
  • 1.5V to 15.4V Input Voltage Range
• 0.597V Internal Reference Voltage
  • ±1.0% Over the Commercial Temperature Range
  • ±1.5% Over the Industrial Temperature Range
• Voltage-Mode PWM Control with Dual-Edge Modulation
• 14V High Speed N-Channel MOSFET Gate Drivers
  • 2.0A Source/3A Sink at 14V Bottom-Side Gate Drive
  • 1.25A Source/2A Sink at 14V Top-Side Gate Drive
• Fast Transient Response
  • 15MHz (typ) Gain-Bandwidth Error Amplifier with 6V/µs slew rate
  • Full 0% to 100% Duty Cycle Support
• Programmable Operating Frequency from 50kHz to 1.5MHz
• Lossless Programmable Overcurrent Protection
  • Top-Side MOSFET’s rDS(ON) Sensing
  • ~120ns Blanking Time
• Sourcing and Sinking Current Capability
• Support for Start-Up into Prebiased Loads
• Soft-Start Done and an External Reference Pin for Tracking Applications are Available in the QFN Package
• Pb-free available (RoHS compliant)