MORNSUN PoL Power Supply to Reduce Power Loss and Improve Stability in Telecom System Design
CONTENTS
What is PoL Power Supply?
1) What is PoL power supply？
Point-of-load (PoL) power supplies are commonly used in distributed, multi-function PCB designs, placed close to LSIs (Large Scale Integrated Circuits) to power high-speed processing ICs such as FPGAs, DSPs and ASICs. PoL power supplies are normally non-isolated micro power supplies, commonly used in optical communication, data centers, switches, etc.
2) Advantages of Using the PoL Power Supply
In communication systems, the design of the information processing system is a key part of the overall system design and is the most complex. The power supply unit can be a discrete power supply solution, which has the advantage of lower prices for individual raw materials. However, raw material management and defect control costs are relatively high. The complexity of the system design also leads to longer design and verification times for the entire system. Most importantly, the discrete solution leads to an increase in board area, which is contrary to the current demand and trend for system miniaturization.
The use of non-isolated DC-DC POL power modules can offer a number of benefits. First, these power modules use advanced packaging technology and have high power density, helping to reduce system size. Second, the overall performance of the integrated power supply is highly reliable, meeting the demanding power management requirements. Engineers can quickly implement complex power management designs. Third, DOSA & POLA-based power modules are pin-compatible with one another, allowing easy replacement for system upgrades or maintenance.
Key Requirements of PoL Power Supply
There are many PoL power modules on the market, so it can be difficult to choose the right one. Here are some important characteristics to consider when selecting a PoL power module that meets your requirements.
1) High-current output, high-dynamic load, high output voltage accuracy, low ripple noise
With the development of communication technologies, CPUs, DSPs, and ASICs are required to process faster and faster, with lower voltages and higher currents. To meet the requirements for the normal operation of high-speed chips, their power supplies must have high dynamic load capacity, high peak current, low ripple and noise, as well as high output voltage accuracy, fast transient response and low voltage deviation.
2) Compact size
One of the reasons for the emergence of PoL power supplies is the development of miniaturization in semiconductor manufacturing. Also, as communications equipment continues to become smaller, there is an increasing need for PoL power supplies to be miniaturized and to deliver high power.
Furthermore, the current in a circuit creates an electromagnetic field in the conductor, which causes interference and affects the proper functioning of the circuit. There is also the resistance of wire, which can cause a voltage drop. The smaller the size of the PoL power supply, the closer it can be to the point of load, reducing the length and impedance of the wire and reducing the effects of electromagnetic interference and voltage drop, thus improving the stability and reliability of the circuit.
3) DOSA & POLA based
POLA (Point of Load Alliance) and DOSA (Distributed Power Supply Open Standards Alliance) are two product standardization consortia in the power supply industry. Their aim is to achieve pin compatibility between DC/DC products from different manufacturers, flexible interchangeability and reduced deployment risk.
4) Wide input voltage range
High isolation DC-DC converters in such circuits typically convert mains power to 5VDC or 12VDC, so the PoL power supply should have a wide range of input voltages to match the 5VDC and 12VDC inputs from the isolated DC/DC power supply. And, the Inputs that allow a wider range of voltages are preferred.
5) Adjustable output
Digital chips such as RAM have different input voltage requirements, e.g. 0.6V/1.2V/1.8V/2.5V/3.3V/5.0V. The adjustable output voltage allows the PoL power supply to be used with different digital chips by adjusting the output voltage.
Mornsun provides you reliable and efficient power supply
To meet the increasing current and power density demands of networking applications while providing maximum flexibility in system configuration, MORNSUN offers a range of reliable and efficient PoL converters to help designers solve the increasingly complex board-level power challenges posed by advances in digital silicon.
Mornsun's compact, high-efficiency PoL regulators feature a wide load range from 6A to 60A, ±1% output voltage accuracy, adjustable output voltage, high conversion efficiency, fast transient response, low ripple and noise, and PGood, Remote Sense and CTRL functions. In addition, these PoL power modules have a wide operating temperature range of -40°C to +85°C. They are therefore suitable for the communications and computer networking industries, power distributed architectures, workstations, servers, LAN/WANs, and providing high currents with the fast transient response for high-speed chips such as FPGAs, DSPs and ASICs.
Selection guide for Mornsun POL power supply:
