Point-of-load converter
A point-of-load converter (POL converter or POL) is a compact DC-to-DC converter placed physically close to the electronic load that it powers. Point-of-load converters take an intermediate direct-current bus voltage (typically 5 V, 12 V, 48 V or 54 V depending on the system architecture) and step it down to the low core-rail voltages required by modern digital integrated circuits, which are commonly in the range of 0.6 V to 1.2 V.[1][2]
Architecture
Point-of-load converters are typically implemented as single-stage or multi-phase buck converters. Multi-phase implementations parallel between four and 24 converter phases operating with interleaved switching to reduce output ripple and to spread current and thermal loading across multiple devices. Each phase generally consists of a control integrated circuit, a pair of MOSFETs arranged as high-side and low-side switches, an output inductor and output filter capacitance.[1]
The primary design rationale for placing the converter close to the load is the minimisation of the power delivery network (PDN) impedance between the converter output and the load pins. Long copper runs between a distant converter and the load add both series resistance and parasitic inductance, which cause conduction losses at direct current and transient voltage droop when the load current changes rapidly.[1]
Applications
Point-of-load converters are used throughout modern digital electronics wherever a compact device with strict transient response requirements is powered from a common intermediate bus. Typical applications include central processing units, graphics processing units, field-programmable gate arrays, application-specific integrated circuits, DRAM modules and SSD controllers in servers, workstations, data centers and telecommunications equipment.[2]
AI accelerator power delivery
In AI accelerator systems, point-of-load converters supply the final core-voltage rails to GPU and ASIC processors. As accelerator socket currents have risen past approximately 1,500 amperes at sub-1 volt core voltages, board-level multi-phase buck point-of-load architectures have faced competitive pressure from on-package power-delivery approaches, including factorised power modules from Vicor Corporation and chip-scale integrated voltage regulators from Empower Semiconductor (acquired by Analog Devices in July 2026), Ferric and PowerLattice.[3]
See also
- DC-to-DC converter
- Voltage regulator module
- Buck converter
- Power delivery network
References
- ↑ 1.0 1.1 1.2 "What is a Point-of-Load Converter?". Monolithic Power Systems. Retrieved 9 September 2026.
- ↑ 2.0 2.1 "Point-of-Load Regulators". Texas Instruments. Retrieved 9 September 2026.
- ↑ Kumar, Aditya (3 September 2026). "What Ferric is worth after ADI paid $1.5 billion for Empower". adikumar.co. Retrieved 9 September 2026.
This article "Point-of-load converter" is from Wikipedia. The list of its authors can be seen in its historical and/or the page Edithistory:Point-of-load converter. Articles copied from Draft Namespace on Wikipedia could be seen on the Draft Namespace of Wikipedia and not main one.
