RT9627A

® RT9627A High Voltage Synchronous Rectified Dual-Channel Buck MOSFET Driver for Notebook Computer General Description The RT9627A is a high frequency, dual-channel driver specifically designed to drive two power N-MOSFETs in each channel of a synchronous-rectified Buck converter topology. It is especially suited for mobile computing applications that require high efficiency and excellent thermal performance. This driver, combined with Richtek's series of multi-phase Buck PWM controllers, provides a complete core voltage regulator solution for advanced microprocessors. The drivers are capable of driving a 3nF load with fast rising/falling time and fast propagation delay. This device implements bootstrapping on the upper gates with only a single external capacitor. This reduces implementation complexity and allows the use of higher performance, cost effective, N-MOSFETs. Adaptive shoot through protection is integrated to prevent both MOSFETs from conducting simultaneously. Features  Dual-Channel Driver  Each Channel Drives Two N-MOSFETs  Adaptive Shoot-Through Protection  0.5Ω On-Resistance, 4A Sink Current Capability  Supports High Switching Frequency  Tri-State PWM Input for Power Stage Shutdown  Output Disable Function  Integrated Boost Switch  Low Bias Supply Current  VCC POR Feature Integrated  RoHS Compliant and Halogen Free Applications  Core Voltage Supplies for Intel® / AMD® Mobile Microprocessors  High Frequency Low Profile DC/DC Converters  High Cur...