Infineon Introduces XDP8HD40S-1 High-Voltage Hot-Swap Controller, Extending its Power Semiconductor
Infineon Technologies AG introduces the XDP8HD40S-1, a high-voltage hot-swap controller engineered for digital power-path protection and monitoring. This device is specifically designed for next-generation artificial intelligence (AI) server power architectures, supporting operations at ±400 V and 800 V direct current (VDC). It addresses the evolving power-management needs of AI infrastructure as rack power architectures transition from 48 V to higher-voltage distribution, ensuring safe power-module connection and disconnection while providing essential monitoring and protection functions for high-voltage server systems.
The XDP8HD40S-1 expands Infineon's power semiconductor portfolio, integrating crucial protection and monitoring capabilities required by advanced high-voltage AI server architectures. The controller is designed to complement existing power semiconductors and power-conversion components, facilitating comprehensive power-path control. Its hot-swap functionality is a key differentiator, enabling the safe connection or disconnection of power modules, converters, graphics processing units (GPUs), and server subsystems without compromising overall system integrity.
A core element of the controller's design is its digital Safe Operating Area (SOA) control, which combines programmable and preconfigured active protection features. This includes a unique variable-pulse SOA control mode, known as Boost Mode, engineered to optimize startup behavior while rigorously maintaining safe operation of the power switch. Furthermore, an integrated gate driver supports external silicon carbide (SiC) cascode implementations, utilizing a MOSFET and JFET combination, and is compatible with Infineon's OptiMOS MOSFETs and CoolSiC JFETs.
For comprehensive power-system management, the device incorporates advanced measurement and monitoring functions. It features 12-bit analog-to-digital converters (ADCs) for current and voltage measurement, offering approximately 1% accuracy for both, and approximately 3% accuracy for power measurement. Additionally, the controller provides analog power monitoring with 1.5% accuracy and integrated energy metering. These capabilities allow for precise monitoring of electrical operating conditions and energy consumption, crucial for efficient power-management implementations. Communication and fault analysis are handled via a PMBus 1.5 interface, which includes enhanced security features and a built-in black-box recording function to capture critical event information for debugging. The controller also offers configurable input/output overvoltage/undervoltage protection, support for external temperature sensors, overtemperature protection, and surge immunity protection.
Source Link: Press Release
Specifications
| Parameter | Specification |
|---|---|
| Product | XDP8HD40S-1 high-voltage hot-swap controller |
| Target system voltages | ±400 V and 800 VDC |
| VDDB operating voltage | 4.5 V to 24 V |
| VDDA operating voltage | 4.5 V to 13.2 V |
| Current measurement resolution | 12-bit ADC |
| Voltage measurement resolution | 12-bit ADC |
| Voltage measurement accuracy | Approximately 1% |
| Current measurement accuracy | Approximately 1% |
| Power measurement accuracy | Approximately 3% |
| Analog power monitoring accuracy | 1.5% |
| Configurable pull-down current | 1.5 A |
| Communication interface | PMBus 1.5 |
| Package | LFDSO-40 |
| Package dimensions | 10.7 mm × 10.3 mm |
| Target sample availability | Second quarter of 2027 |
Key Features
- High-voltage power-path control for AI server architectures operating at ±400 V and 800 VDC.
- Hot-swap functionality enabling safe connection and disconnection of power modules, converters, and GPUs.
- Digital Safe Operating Area (SOA) control with programmable and preconfigured active protection features.
- Variable-pulse Boost Mode for optimized startup behavior while maintaining safe power switch operation.
- Integrated gate driver supporting external SiC cascode implementations (MOSFET and JFET combination).
- Compatibility with Infineon's OptiMOS MOSFETs and CoolSiC JFETs.
- 12-bit ADCs for high-resolution current and voltage measurement with approximately 1% accuracy.
- PMBus 1.5 interface with enhanced security features and a built-in black-box recording function.
- Configurable input and output overvoltage and undervoltage protection.
- Support for an external temperature sensor and integrated overtemperature protection.
- Integrated energy metering for comprehensive power-system monitoring.
- Compact LFDSO-40 package with dimensions of 10.7 mm × 10.3 mm.
Applications
- Digital power-path protection and monitoring in high-voltage AI server systems (±400 V and 800 VDC).
- High-voltage rack and server power delivery systems.
- Intermediate bus converters, including two-wire 800 V or ±400 V, and 1,500 V systems.
- GPU power systems requiring robust power-path protection.
- Battery backup systems for hot-swap and power-path control.
- Peak shaving power-management implementations.
- High-voltage hot-swap systems operating between 400 V and 800 V.
Availability
Infineon Technologies’ XDP8HD40S-1 high-voltage hot-swap controller is scheduled for sample availability in the second quarter of 2027. Offered in an LFDSO-40 package measuring 10.7 mm × 10.3 mm, the device is designed for high-voltage power-path protection and monitoring in 400 V and 800 V AI server architectures.
