Future Electric Vehicle Success Will Depend on Its Energy Source

The electric vehicle is one potential answer to rising fuel prices and the U.S. dependence on foreign oil. However, the performance of today’s electric vehicles is limited by its on-board rechargeable battery, which is not yet optimum....

How to Run a Split-Phase Induction Motor with a Three-Phase Inverter

A motor control IC is a convenient way to implement custom motor drive algorithms such as the single-phase induction motor (SPIM) control. A generalized control algorithm, implemented and tested in an application environment proves the concept of variable speed control of the SPIM....

High-Current and High-Frequency Filtering With Feedthrough Capacitors

Critical factors unique to high current feedthrough filter applications: through current and shunt current dissipation, as well as the associated temperature rise....

Compensating and Measuring the Control Loop of a High-Power LED driver

While not exact, a mathematical model gives the designer a good starting point for designing the compensation of a WLED current-regulating boost converter. In addition, the designer can measure the control loop with one of the alternate methods....

Hybrid-Switching Step-down Converter with Hybrid Transformer

A new type of DC-DC converter based on Hybrid-switching Method™ and a novel Hybrid Transformer™ enables a high step-down voltage conversion and provides a regulated output voltage of 1V from a 48V source with high efficiency while operating at 0.2 duty ratio or higher. The new converter topology reduces the total silicon used for switches compared to synchronous buck converters, due to the reduced voltage stress and voltage rating of its synchronous rectifier MOSFET switch....

Supercapacitors Enhance LDO Efficiency- Part 2: Implementation Issues

Using supercapacitors in combination with LDOs provides a higher efficiency than the LDO alone. However, there are some precautions that must be observed....

External DC/DC Converter Completes Battery Charger Circuit

A high voltage controller and power manager IC combines with virtually any externally compensated DC/DC power supply IC to create a full-featured battery charger....

Sub-Milliohm MOSFET's On-State Voltage Drop Is Only 27.9 mV at 50A

With on-resistance less than 1 mΩ, the PI5101 MOSFET enables low-voltage, high-current applications for active ORing, hot swap power managers, and load switches. ...