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ISL6208B

High Voltage Synchronous Rectified Buck MOSFET Drivers

TheISL6208andISL6208Barehighfrequency,dualMOSFET drivers,optimizedtodrivetwoN-ChannelpowerMOSFETsina synchronous-rectifiedbuckconvertertopology.Theyare especiallysuitedformobilecomputingapplicationsthat requirehighefficiencyandexcellentthermalperformance. The

ISL6208B

High Voltage Synchronous Rectified Buck MOSFET Drivers

TheISL6208andISL6208Barehighfrequency,dualMOSFET drivers,optimizedtodrivetwoN-ChannelpowerMOSFETsina synchronous-rectifiedbuckconvertertopology.Theyare especiallysuitedformobilecomputingapplicationsthat requirehighefficiencyandexcellentthermalperformance. The

ISL6208B

High Voltage Synchronous Rectified Buck MOSFET Drivers

TheISL6208andISL6208Barehighfrequency,dualMOSFET drivers,optimizedtodrivetwoN-ChannelpowerMOSFETsina synchronous-rectifiedbuckconvertertopology.Theyare especiallysuitedformobilecomputingapplicationsthat requirehighefficiencyandexcellentthermalperformance. The

ISL6208B

High Voltage Synchronous Rectified Buck MOSFET Drivers; ? Dual MOSFET drives for synchronous rectified bridge\n? Adaptive shoot-through protection\n? 0.5? On-resistance and 4A sink current capability\n? Supports high switching frequency up to 2MHz\n? Fast output rise and fall time\n? Low propagation delay\n? Three-state PWM input for power stage shutdown\n? Internal bootstrap Schottky diode\n? Low bias supply current (5V, 80μA)\n? Diode emulation for enhanced light load efficiency and pre-biased start-up applications\n? VCC POR (Power-On-Reset) feature integrated\n? Low three-state shutdown holdoff time (typical 160ns)\n? Pin-to-pin compatible with ISL6207\n? QFN and DFN package:\n? Compliant to JEDEC PUB95 MO-220 QFN - Quad flat no leads - package outline DFN - Dual flat no leads - package outline\n? Near chip scale package footprint, which improves PCB efficiency and has a thinner profile\n? Pb-free (RoHS Compliant)\n;

The ISL6208 and ISL6208B are high frequency, dual MOSFET drivers, optimized to drive two N-Channel power MOSFETs in a synchronous-rectified buck converter topology. They are especially suited for mobile computing applications that require high efficiency and excellent thermal performance. These drivers, combined with an Intersil multiphase Buck PWM controller, form a complete single-stage core-voltage regulator solution for advanced mobile microprocessors. ISL6208 and ISL6208B have the same function but different packages. The descriptions in this datasheet are based on ISL6208 and also apply to ISL6208B. The ISL6208 features 4A typical sinking current for the lower gate driver. This current is capable of holding the lower MOSFET gate off during the rising edge of the Phase node. This prevents shoot-through power loss caused by the high dv/dt of phase voltages. The operating voltage matches the 30V breakdown voltage of the MOSFETs commonly used in mobile computer power supplies. The ISL6208 also features a three-state PWM input that, working together with Intersil’s multiphase PWM controllers, will prevent negative voltage output during CPU shutdown. This feature eliminates a protective Schottky diode usually seen in a microprocessor power systems. MOSFET gates can be efficiently switched up to 2MHz using the ISL6208. Each driver is capable of driving a 3000pF load with propagation delays of 8ns and transition times under 10ns. Bootstrapping is implemented with an internal Schottky diode. This reduces system cost and complexity, while allowing the use of higher performance MOSFETs. Adaptive shoot-through protection is integrated to prevent both MOSFETs from conducting simultaneously. A diode emulation feature is integrated in the ISL6208 to enhance converter efficiency at light load conditions. This feature also allows for monotonic start-up into pre-biased outputs. When diode emulation is enabled, the driver will allow discontinuous conduction mode by detecting when the inductor current reaches zero and subsequently turning off the low side MOSFET gate.

ISL6208B

High Voltage Synchronous Rectified Buck MOSFET Drivers

ISL6208B

High Voltage Synchronous Rectified Buck MOSFET Drivers

ISL6208B

High Voltage Synchronous Rectified Buck MOSFET Drivers

ISL6208B

High Voltage Synchronous Rectified Buck MOSFET Drivers

ISL6208BCRZ

絲印：8BC；Package：DFN-82x2；High Voltage Synchronous Rectified Buck MOSFET Drivers

TheISL6208andISL6208Barehighfrequency,dualMOSFET drivers,optimizedtodrivetwoN-ChannelpowerMOSFETsina synchronous-rectifiedbuckconvertertopology.Theyare especiallysuitedformobilecomputingapplicationsthat requirehighefficiencyandexcellentthermalperformance. The

ISL6208BCRZ-T

High Voltage Synchronous Rectified Buck MOSFET Drivers

TheISL6208andISL6208Barehighfrequency,dualMOSFET drivers,optimizedtodrivetwoN-ChannelpowerMOSFETsina synchronous-rectifiedbuckconvertertopology.Theyare especiallysuitedformobilecomputingapplicationsthat requirehighefficiencyandexcellentthermalperformance. The