MAX8811EEE+

The MAX8811EEE+ is a high speed, dual phase driver with integrated boost diodes in 16 pin QSOP package. This 2-phase gate driver controls power MOSFETs in multiphase synchronous step-down converter applications, providing up to 30A output current per phase. The MAX8811 multiphase power-supply controller) combine to provide an efficient, low cost solution for a wide range of multiphase power supply applications. Adaptive shoot through protection circuitry is implemented to prevent shoot through currents for high side off to low side on transition. A programmable delay is provided for low side off to high side on transition. This maximizes overall converter efficiency while supporting operation with variety of MOSFETs. The MAX8811 provides an easy upgrade path from MAX8523 dual driver. It is used in processor core voltage regulators, multiphase buck converters, voltage regulator modules, switching power supplies and DC to DC converter modules.

• Integrated bootstrap diodes reduce external component count
• 4.5V to 7V input voltage range, 6A peak gate drive current, handles system input voltages up to 26V
• Capable of 30A per phase, enable input provides flexibility for power sequencing
• 0.4 ohm/0.9 ohm low side, 0.7 ohm/1ohm high side drivers (typ)
• Each MOSFET driver is capable of driving 3000pF capacitive loads with 11ns typical rise/fall times
• Adaptive dead time control, user programmable delay time
• Enable function with 0.04µA (typ) quiescent current in shutdown
• Supply current (per channel) is 0.7mA at VPWM__= 0
• Shutdown supply current (per channel) id 0.04µA, on-resistance is 6ohm at IBST_ = 40mA
• Operating temperature range from -40°C to +85°C
• DC-DC Converter Modules; Multiphase Buck Converters; Processor Core Voltage Regulators; Switching Power Supplies; Voltage-Regulator Modules (VRMs)

Uwagi

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