For many engineers, layout for EMI mitigation is a black art. It may seem like the slightest adjustment could be the difference between passing or failing CISPR standards. Because of this, some power designers may shy away from using devices with switching elements as a guaranteed way to avoid the headache of reducing emissions. But this may be trading one problem for another, as switching devices generally have better efficiency and thermal performance.
Efficiently addressing EMI starts at the device selection stage. On-silicon technologies like spread spectrum or unique packaging approaches like HotRod™ QFN can help reduce EMI before we even begin the discussion of component layout and filtering.
Certain end-equipment, like communications, server, industrial, and personal electronics have design challenges solved by the DC/DC converter’s control-mode. This session will compare and contrast 3 different devices using 3 different control modes under the same design criteria to see how each control mode solves particular size, efficiency, external component, ripple and transient response design challenges.
This training series covers critical power supply design parameters such as EMI mitigation, heat dissipation, and loop compensation. Each training module features guidance using the LM4360x/LM4600x Synchronous SIMPLE SWITCHER® step-down voltage regulator as an example device.
This five-part series provides an overview of DC-DC converters.
This series provides an overview of the various buck regulator architectures, including:
- Multi-Phase Buck Regulators
- Hysteretic Buck Regulators
- COT Buck Regulators
- Current/Emulated Current Mode Buck Regulators
- Voltage Mode Buck Regulators
Another way to manage thermals is through IC packaging. Smaller and smaller packages continue to be introduced as output currents trend upward. Learn more about the packaging technologies that aid heat dissipation under these challenging conditions and enable high power density.
The training provides a very comprehensive introduction of the commonly-used interfaces including RS-485, RS-422, ProfiBus, RS-232, IO-Link, CAN and LIN. These interfaces are used in the application of Factory Automation and some other industrial applications. For the engineer who needs to deal with interface system design, this is a very useful training.
This section will compare the out put ripple and jitter for the 3 different solutions
This section will cover thing to consider when choosing your output capacitor
PCB layout tips to manage heat dissipation with your switching regulator
EMI (electromagnetic interference) mitigation is a critical step in the design process in most electronic systems, and especially so in the automotive world. In many cases, automotive OEM emissions requirements are even more stringent than both national and international standards bodies like the FCC. Unfortunately, by their nature, switching regulators are sources of EMI; but, in order to keep power supply designs small and efficient, switchers are a critical component. So how can you reap the benefits of a switching regulator while still meeting challenging EMI requirements?
Explore several subtle nuances to significantly improve power supply performance. Examples include: the hidden advantages of synchronous regulators, a module that features the best attributes of a switcher AND an LDO, and tips to reduce system noise by manipulating output capacitor combinations.
In today’s computing environment, CPUs, FPGAs, ASICs and even peripherals are growing increasingly complex and, consequently, so do their power delivery requirements. To handle the higher demands, multiphase regulators are becoming increasingly common on motherboards in many areas of computing--from laptops and tablets to servers and Ethernet switches. Designing with these regulators is more challenging than using conventional switchers and linear regulators, but the benefits of multiphase outweigh the complexity for high-performance power applications.