48V hot swap controller optimized for AI servers
Infineon Technologies has developed a 48 V wide input voltage range digital hot swap controller with a programmable safe operating area (SOA) control for high-power AI servers
The XDP711-001 controller provides input and output voltage monitoring and reporting to within 0.4 percent and system input current monitoring and reporting to 0.75 percent accuracy at full ADC range for fault detection.
The XDP711-001 hot swap controller uses a pulsed SOA current control technology for safer turn-on in systems with non-optimal field-effect transistors (FETs) for a lower system bill-of-material (BOM) cost. The controller is tailored to drive multiple MOSFETs in parallel, supporting high-power designs, which is becoming a key requirement for AI servers.
The XDP711-001 employs a three-block architecture that combines high-precision telemetry for monitoring and fault detection, digital SOA control optimized for power MOSFETs, and high-current integrated gate drivers capable of driving up to eight n-channel power MOSFETs, allowing designs of 4 kW, 6 kW, and 8 kW Power Delivery Boards (PDB).
The controller has a wide 7 V to 80 V input voltage range and can withstand transients up to 100 V for 500 milliseconds, delivering input power monitoring and reporting of ≤1.15 percent accuracy. PMBus compliant active monitoring also provides enhanced system reliability and the fully digital operating mode minimizes the need for external components to reduce the size of the design in space-constrained racks.
A programmable gate shutdown during severe overcurrent (SOC) ensures robust shutdown operation within 1 microsecond.
With options for external FET selection and one-time programming (OTP), the XDP711-001 offers flexibility for programming faults and warnings detection as well as de-glitch timers for various usage models. Its analog-assisted digital mode (AADM) offers backward compatibility with legacy analog hot swap controllers.
“The Infineon XDP711-001 hot swap controller with its feature rich, high-precision analog-front-end along with comprehensive health monitoring, telemetry, programmability, and pre-set MOSFET SOA, will perfectly address the challenges associated with the current design of pluggable AI server solutions”, said Magdalene Boebel, Vice President ICs at Infineon.
“By offering robust functionality and adaptability, the XDP711-001 exemplifies Infineon’s continuous commitment to innovation, setting new standards for system reliability for AI servers and other applications such as network routers and switches.”
The XDP711-001 hot swap and system monitoring controller IC is available in a VQFN-29 6mm x 6mm package. It can be officially ordered mid of 2025.
www.infineon.com/protection-and-monitoring-ics
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