For noise-critical portable applications, such as GPS receivers, connectivity, and sensing, power supply designers always had to choose between longer battery run time (from higher efficiency) or higher signal chain performance (from the increased sensor sensitivity possible with a quieter power supply). For line-powered industrial or communications equipment applications, designers have been forced to dissipate significant amounts of power in LDOs to achieve the desired noise performance. Achieving both low noise and high efficiency was impossible.
Battery life cycle is a key for high-cell-count battery pack-based end-equipment. Low quiescent current (Iq) consumption of DC-DC converters is a major feature that helps achieve longer battery life cycles. TI’s latest buck converters boast low Iq consumption as they maintain high efficiency in the active mode (heavy loads) as well as extend battery life during standby modes. This training will cover an overview of battery powered industrial applications and the specific power consumption requirements for these end equipments.
In testing in the lab, Carmen takes a six phase buck regulator through basic validation testing in the lab with plenty of tips and waveforms shared. Let Carmen show you how to test transient response, input and output ripple, phase stability, and thermal performance. Additionally, TI engineers blog about various lab tricks related to multiphase devices.
This 7-part series discusses tips and best practices for selecting the appropriate components for your switching power supply.
This section will cover issue to consider when choosing your switching frequency
This section will compare the size of the solution for the 3 different designs.
This section will compare the schematics and components chosen for the 3 solutions used in this comparis
This section will cover the selection of the series capacitor for the TPS54A20
This section presents the buck-boost dc-dc converter as an effective and efficient solution for the wide vin automotive battery rail. The advantages compared to pre-boost and two stage solutions are presented. Also contains an overview of buck-boost converter and controller offerings convering various current and power levels.
Riding Out Automotive Transients : Architecting Front End Power Conversion Stage for Automotive Off-Battery Loads
With rapidly expanding electronic content in latest generation of cars, there is an ever increasing need for power conversion from the car battery rail. The 12-V battery rail is subject to a variety of transients. This presents a unique challenge in terms of the power architecture for off-battery systems. This presentation introduces the different types of transients that occur in automotive battery rails, the causes of those transients, and the standards and specifications defining the test conditions for those transients.
This section presents the different methods of protecting the electronic loads connected to the automotive battery rail in the event of accidental reverse battery connection. The methods covered include:
- Schottky diode
- PFET + discretes
- Smart diode + NFET
Why should you understand power management?
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.