ON NCP81109CMNTXG Single-Phase Voltage Regulator With SVID Interface For Computing Application

 

Shenzhen Mingjiada Electronics Co., Ltd., a renowned distributor of electronic components, supplies ON's NCP81109CMNTXG single-phase voltage regulator. This voltage regulator, featuring an integrated SVID interface, is specifically designed for high-performance computing applications, delivering an efficient and compact power management solution.

 

【NCP81109CMNTXG Product Overview】

The NCP81109CMNTXG is a single-phase synchronous buck regulator integrating a power MOSFET, capable of delivering up to 14A output current (TDC) on its SVID-enabled adjustable output.

 

The NCP81109CMNTXG supports a wide input voltage range of 4.5V to 16V and an output voltage range of 0V to 2.3V, making it suitable for diverse computing devices.

 

Its switching frequency range spans 500 kHz to 1.2 MHz, enabling the use of small-sized inductors and capacitors while maintaining high efficiency. The NCP81109CMNTXG employs current-mode RPM control with feedforward from the input supply and output voltage, ensuring stable operation across a wide range of operating conditions.

 

The NCP81109CMNTXG also integrates multiple protection features, including overcurrent protection, overvoltage/undervoltage protection, and thermal protection, effectively preventing faults and enhancing system reliability.

 

 

【Key Features and Specifications of the NCP81109CMNTXG】

The NCP81109CMNTXG incorporates multiple advanced features to meet the stringent power management demands of modern computing equipment:

 

High-Performance Power Handling: Supporting a wide input voltage range of 4.5V to 16V², the NCP81109CMNTXG delivers up to 14A output current with a maximum output voltage of 2.3V, making it ideal for powering modern low-voltage, high-current computing cores.

 

SVID Interface Support: The NCP81109CMNTXG incorporates an integrated SVID (System Voltage Identification) interface, enabling digital communication between the processor and voltage regulator to implement Dynamic Voltage and Frequency Down (DV/DFD) functionality. This allows the power management system to dynamically adjust supply voltages based on real-time processor load conditions, optimising energy efficiency.

 

High Switching Frequency: The NCP81109CMNTXG supports programmable switching frequencies ranging from 500kHz to 1.2MHz. This high switching frequency permits the use of smaller inductors and capacitors, reducing the board space occupied by the power solution and meeting the compact design requirements of modern computing devices.

 

High Efficiency Design: Incorporating integrated MOSFETs and advanced control algorithms, the NCP81109CMNTXG achieves conversion efficiencies of up to 95%. This minimises energy loss and thermal dissipation, contributing to extended battery life in portable devices.

 

Comprehensive Protection Features: The NCP81109CMNTXG integrates overcurrent, overvoltage/undervoltage, and thermal protection functions, ensuring safe system operation under various abnormal conditions and enhancing overall reliability.

Compact Packaging: The NCP81109CMNTXG utilises a 48-pin QFN package (6x6mm), occupying minimal PCB space and making it highly suitable for space-constrained applications.

 

【NCP81109CMNTXG Operating Principles and Technical Advantages】

The NCP81109CMNTXG is a single-phase synchronous buck regulator employing a current-mode control architecture with feedforward functionality from both the input power supply and output voltage. This design ensures stable operation across a wide range of operating conditions.

 

Adaptive Voltage Positioning (AVP)

The NCP81109CMNTXG incorporates Adaptive Voltage Positioning (AVP) technology. This dynamically adjusts the output voltage in response to load current changes, thereby reducing voltage deviation during load transients and lowering the requirement for output capacitance.

 

Dynamic Voltage Identification (DVID)

Via the SVID interface, the processor can send voltage adjustment commands to the regulator, enabling Dynamic VID (DVID) functionality. This mechanism allows the processor to rapidly switch between operating states (e.g., power-saving mode, performance mode) while the power supply voltage adjusts accordingly, optimising the power efficiency ratio.

 

Current-Mode RPM Control

The NCP81109CMNTXG employs a current-mode RPM (Regulating Pulse Width Modulation) control architecture. Combined with feedforward mechanisms for input power and output voltage, this ensures stable operation across a wide range of operating conditions and delivers excellent transient response performance.

 

【NCP81109CMNTXG Application Areas】

The NCP81109CMNTXG is suitable for diverse high-performance computing applications:

Computing Devices: Servers, high-performance personal computers, etc., providing efficient and precise power management for core components such as CPUs, GPUs, and FPGAs.

Embedded Systems: Delivering stable power solutions within various industrial control and automation equipment.

Ultrabooks and laptops: Particularly suited for mobile computing devices with stringent power consumption and space constraints.

 

The NCP81109CMNTXG complies with VR12.6 and VR12.6+ specifications, supporting 11.5W and 15W ULT platforms, thereby meeting the demanding power management requirements of modern computing devices.