company blog about Supply Infineon DC-DC Converters:Digital Multiphase Controller,Smart Power Stage,Power Module

Supply Infineon DC-DC Converters:Digital Multiphase Controller,Smart Power Stage,Power Module

Shenzhen Mingjiada Electronics Co., Ltd. specialises in the sale of electronic components. Through consistent quality, on-time delivery and professional service, we provide our customers with an efficient, convenient and high-quality procurement experience.

Supply Advantages:

1. Guaranteed Genuine Products: All chips are sourced directly from manufacturers’ channels, and we provide traceable documentation to ensure there are no refurbished products or loose new items.

2. Ample and Stable Stock: We maintain sufficient stock at all times to support sample orders, small-batch prototyping and large-scale mass production, with short lead times.

3. Strict Quality Control: We ensure that all components supplied originate from legitimate channels and are of reliable quality.

4. Highly Competitive Pricing: Through close collaboration with suppliers and efficient supply chain management, we are able to offer highly competitive prices.

I. XDP™ Series Digital Multi-Phase Controllers: The digital control core of the entire DC-DC system

The digital multi-phase controller acts as the ‘brain’ of a multi-phase buck power supply, responsible for multi-channel PWM phase allocation, closed-loop regulation, current sharing control, dynamic load scheduling, power supply monitoring and fault protection. The Infineon XDP™ product line is divided into two main categories: the general-purpose mid-range XDPP series and the high-end AI-focused XDPE series, catering to a full range of applications from low-current industrial control to high-current AI applications in the hundreds of amperes.

Core Products and Key Parameters

1. XDPP1148-100C (General-Purpose Multi-Phase Controller)

- Core: Built-in 32-bit Arm Cortex-M0 processor, clocked at 100 MHz, in an ultra-compact 4 mm × 4 mm VQFN-24 package

- Control Capabilities: Supports multi-phase interleaved buck and LLC resonant topology closed-loop control, featuring feedforward compensation, non-linear PID transient acceleration, and light-load phase reduction technology

- Communication Interfaces: PMBus 1.4, I²C, SPI, UART; supports custom firmware debugging; built-in non-volatile memory for storing power supply parameters

- Suitable Applications: 48V intermediate bus converters (IBCs), telecommunications equipment, industrial computers, edge AI computing boxes

2. XDPE1A2G5B (16-phase flagship controller for AI servers)

- Supports up to 16-phase parallel output, with flexible configuration options for 16+0, 15+1 and 8+8 dual-rail power supply architectures

- Voltage accuracy: 1 mV output step size, voltage regulation accuracy <0.5 per cent; suitable for ultra-low CPU/GPU core voltages (0.75 V to 3.1 V)

- Proprietary technologies: AVSBus dynamic voltage regulation, differential voltage sampling, ultra-fast phase current balancing, and programmable temperature-compensated load lines

- Integrated comprehensive fault detection: overvoltage, undervoltage, overcurrent, overtemperature and phase loss protection; supports remote telemetry and predictive maintenance for data centres

Core Technical Advantages

1. Non-linear transient response algorithm: Handles millisecond-level spikes and drops in AI computing loads, suppressing voltage sags and overshoots; eliminates the need for large-capacity output capacitors, reducing PCB space requirements

2. Intelligent phase scheduling: Ensures current capacity under heavy loads by fully activating all phases in parallel; automatically deactivates redundant phases and switches to Burst intermittent mode under light loads, significantly improving energy efficiency at low loads and reducing annual electricity costs for data centres

3. Visualised configuration and debugging: Supplied with a graphical GUI tool for PC use, this eliminates the need for complex hardware debugging and enables rapid customisation of loop parameters, protection thresholds and switching frequencies, thereby shortening the power supply R&D cycle

4. Multi-platform compatibility: Native support for Intel VR14, AMD CPU power supply specifications and the AVS bus standard; a single component is compatible with multiple server motherboards, simplifying inventory management

II. TDA Series Intelligent Power Stages (DrMOS): DC-DC Power Conversion Execution Units

The intelligent power stage integrates a gate driver chip and upper/lower bridge OptiMOS power MOSFETs into a single package, replacing traditional discrete driver + MOSFET solutions. It serves as the power execution terminal for multi-phase power supplies, directly receiving PWM signals from the controller to perform step-down power conversion, whilst ensuring efficient heat dissipation, high-precision current sensing and a compact layout.

Key Highlights

1. 6th-generation OptiMOS silicon power process: Extremely low on-resistance, peak conversion efficiency of over 95%, significantly reduced heat generation at full load, and suitability for the enclosed cooling environments of AI server racks

2. Built-in high-precision sensing system: Integrated current sampling and temperature sensing modules, with current accuracy of ±3% and real-time temperature output; the controller can read power consumption and temperature data for each phase via PMBus, enabling refined power management

3. Comprehensive protection mechanisms: Cycle-by-cycle current limiting, under-voltage lockout (UVLO), thermal shutdown and short-circuit protection; fault signals are relayed to the controller in real time to prevent damage to GPUs/CPUs caused by power supply anomalies

4. High-frequency, compact design: Switching frequency of up to 1.5 MHz, compatible with smaller power inductors and ceramic capacitors, significantly reducing the PCB footprint of the power supply section and suitable for high-density server motherboard designs

III. TDM Series Integrated Power Modules: All-in-one DC-DC modules (one-stop power supply solutions)

Infineon has integrated digital control logic, multiple intelligent power stages, coupling inductors and decoupling capacitors into a single package to launch the TDM dual-phase and four-phase integrated power modules. Designed primarily for AI vertical power delivery (VPD) applications, these modules eliminate the need for engineers to build discrete circuits and provide a ready-to-use solution for high-current core power supply to GPUs and AI accelerators, making them the preferred choice for next-generation high-density computing.

Key Product Portfolio

1. TDM2354xD/TDM2354xT Two-Phase Power Modules

- Total output current: 160A; two phases integrated into a single unit, reducing volume by 40% compared to discrete solutions

- Exclusive top-mounted inductor stacking structure: optimises airflow for heat dissipation, reducing junction temperature by 11°C at full load and significantly enhancing thermal stability

- Applications: Power supply for mainstream AI server CPUs, mid-range GPU cores, and network switch ASICs

2. TDM2454xx / TDM24745T Four-Phase Flagship Modules (featuring TLVR cross-inductor voltage regulation technology)

- Package Specifications: 9mm × 10mm × 5mm ultra-thin, compact package

- Peak current: 280A; current density up to 2.0A/mm²; the new-generation version breaks through the industry ceiling of 2.5A/mm²

- Key advantages of TLVR: The coupled inductor topology further accelerates load transient response, reduces output capacitance requirements by over 50 per cent, and minimises PCB routing losses

- Suitable applications: High-computing-power generative AI accelerator cards, supercomputing nodes, and high-density rack vertical power delivery (VPD) architectures

Core Value of the Integrated Module

1. Unrivalled power density: Utilises vertical space along the Z-axis, enabling embedded power supply beneath the processor; shortens high-current transmission paths, reducing copper losses and voltage drops

2. Simplified system BOM: Eliminates the need for inductor and capacitor layout, as well as power stage matching and debugging, significantly shortening the power supply design cycle and reducing material procurement and soldering costs

3. Comprehensive thermal optimisation: Integrated substrate + top-mounted inductor cooling architecture, compatible with various cabinet cooling solutions (air-cooled and liquid-cooled), ensuring stable performance during prolonged full-load operation

4. Standardised hardware pinout: Pin compatibility across modules in the same series allows flexible replacement between two-phase and four-phase versions based on computing power requirements; platform iterations do not require PCB redesign

IV. Mainstream Deployment Scenarios

1. AI Data Centres (Core Scenarios): Large-model training servers, AI accelerator cards, switches, and 48V intermediate bus power supply. Utilising the TLVR topology and ultra-high current density to meet the requirements for ultra-low voltage, high-current applications in the hundreds of amperes;

2. In-vehicle smart cockpits / ADAS domain controllers: Step-down conversion for the 12V in-vehicle bus; wide-temperature, anti-interference design suited to the harsh vibration and temperature fluctuations typical of automotive environments;

3. Industrial automation: Industrial PCs, servo controllers and machine vision equipment, offering strong interference immunity and high reliability during prolonged continuous operation;

4. Communication base stations and edge computing: 5G base station baseband units and edge computing gateways, balancing energy efficiency with the need for compact installation.