1 Features
• Active current balancing between paralleled
phases sharing a single PWM input
• Peak continuous current: 90-A
• System efficiency: > 95% at 30-A
• High-frequency operation: 1.25-MHz
• Diode emulation function to enable efficiency
discontinuous conduction mode (DCM) operation
• Temperature compensated bi-directional current
sense
• Analog temperature output
• Fault monitoring
• PWM signal compatible: 3.3 V and 5 V
• Tri-state PWM input
• Integrated bootstrap switch
• Optimized dead-time for shoot-through protection
• High-density industry common QFN 5-mm x 6-mm
footprint
• Ultra-low inductance package
• System-optimized PCB footprint
• Thermally enhanced topside cooling
• RoHS compliant - lead-free terminal plating
• Halogen free

2 Applications
• Multiphase synchronous buck converters
– Greater than 500-A
– High-frequency
• Memory and graphic cards
• Data center and network switches
• Campus and branch switches
• Core and edge routers
• Hardware accelerator cards
• High-performance CPU/ASIC/FPGA power

3 Description
The CSD95430RRB NexFET™ power stage is a
highly optimized design for use in a high-power, highdensity
synchronous buck converter. This product
integrates the driver IC and power MOSFETs to
complete the power stage switching function. This
combination produces high-current, high-efficiency,
and high-speed switching capability in a small 5-mm ×
6-mm outline package. It also integrates the accurate
current sensing and temperature sensing functionality
to simplify system design and improve accuracy. In
addition, the PCB footprint has been optimized to help
reduce design time and simplify the completion of the
overall system design. This power stage features an
active current balance feature which allows multiple
power stages to be paralleled off a single PWM input.
This enables phase multiplication for very high current
applications without the need for a similarly high
phase count controller. The active current balance
ensures that the multiplied phases share current
evenly so no significant derating of current capability
is needed when paralleling phases.