App note from Vishay on their ultra fast recovery diodes as demanded by newer high switching frequency and high voltage MOSFETs and IGBTs as applied in DC/DC converters and inverter circuits. Link here (PDF) This application note describes the basic operating principles of bootstrap and desaturation circuits commonly used with high voltage IC drivers and […]
Tag Archives: DC-DC converter
App note: How to design DC-DC control loop
App note from Maxim Integrated bringing you back to loop theory to understand loop compensation in a DC-DC converter. Link here In our life, control systems are everywhere, whether it be an air conditioner regulating room temperature, a driver steering a car, or an appliance managing the delicate process of cooking dumplings. Control, at its […]
App note: Some thoughts on DC/DC converters
Basis App note of modern DC/DC converters from Analog Devices. Link here (PDF) Many systems require that the primary source of DC power be converted to other voltages. Battery driven circuitry is an obvious candidate. The 6V or 12V cell in a laptop computer must be converted to different potentials needed for memory, disc drives, […]
App note: SEPIC converter analysis and design
Wide input voltage is a specialty of this type of DC-DC converter, here’s an app note from ON Semiconductors on SEPIC converters. Link here (PDF) The single−ended primary−inductor converter (SEPIC) is a type of DC/DC converter that allows the electrical potential (voltage) at its output to be greater than, less than, or equal to that […]
App note: Types of capacitors used for output smoothing of switching regulators and their precautions
Another app note from ROHM Semiconductor on various capacitors used for output smoothing. Link here (PDF) In recent years, it has become a common practice to recommend multilayer ceramic capacitors for the output smoothing of switching regulators due to the stability of their temperature characteristics and the reduction on the mounting area. On the other […]
App note: Generating negative output voltage from positive input voltage using MAX17291 boost converter IC with active discharge feature
App note from Maxim Integrated about their MAX17291 generating negative voltage from positive input. Link here Many applications require the power supply to provide a negative voltage, such as LCD displays, gate drivers, embedded applications, op-amp circuits, etc,. This application note explains how to generate a negative output voltage from a positive input voltage using […]
App note: How to measure the efficiency of a multiphase buck converter integrated circuit
Tips from Maxim Integrated on how to measure efficiency on complicated multiphase converters. Link here Due to the nature of multiphase buck converters, perceived efficiency varies for a static operating condition depending on the load and output voltage measurement connections, as well as the symmetry of the PCB layout. An engineer evaluating multiphase buck converters […]
App note: LV5980MC step-down switching regulator
Single chip high efficiency step-down converter, app note from ON Semiconductors. Link here (PDF) The LV5980MC is a fixed 370 kHz, high−output−current, Non−synchronous PWM converter that integrates a low−resistance, high−side MOSFET and a Customer Chosen, External Diode for the rectification. The LV5980MC utilizes externally compensated current mode control to provide good transient response, ease of […]
App note: 48V buck converter helps MHEVs meet fuel emission standards
Maxim Integrated got you covered on designing all in 48V automotive compliant buck converter. Link here Ever-tightening automotive fuel emission standards are becoming challenging. The gasoline engine needs the help of an electric motor to meet these standards, leading to the introduction of mild hybrid electric vehicles (MHEV) with higher battery voltages. 48V hybrids are […]
App note: Design of a 100W active clamp forward DC-DC converter for telecom systems using the NCP1562
Another DC-DC converter design using ON Semiconductor’s NCP1562 PWM Controller. Link here (PDF) The NCP1562 PWM controller contains all the features and flexibility needed to implement an active clamp forward dc−dc converter. This IC operates from an input supply up to 150 V, thus covering the input voltages usually found in telecom, datacom and 42 […]
App note: DC-to-DC design guide
DC-DC converter design guide from Vishay. Link here (PDF) Manufacturers of electronic systems that require power conversion are faced with the need for higher-density dc-to-dc converters that perform more efficiently, within a smaller footprint, and at lower cost despite increasing output loads. To meet these demands, Siliconix has combined advanced TrenchFET and PWM-optimized process technologies, […]
App note: How to prevent thermal issues with high output current DC to DC converters in portable applications
Tips and tricks from ON Semiconductors on how to optimize high output current switching regulators thermal dissipation. Link here (PDF) As power demand in portable designs is more and more important, designers must optimize full system efficiency in order to save battery life and reduce power dissipation. Energy losses study allows knowing thermal stakes. Due […]
App note: How to use power inductors
A great guide from TDK about power inductors used in DC-DC converters. Link here As electronic devices become more advanced, the power supply voltage of LSIs used in them is lowered, so their power consumption can be reduced and their speed increased. However, a decrease in the power supply voltage also causes the requirements regarding […]
App note: DC/DC converter testing with fast load transient
Another app note from Richtek, this time about transient load testing on power converters and how you can make a simple and low cost fast transient tool. Link here (PDF) Load transient testing is a quick way to check power converter behavior on several aspects: It will show the converter regulation speed and can highlight […]
App note: The behavior of electro-magnetic radiation of power inductors in power management
Application note form Würth Elektronik about EM radiation radiated from inductors in DC-DC converters. Link here (PDF) This Application Note focuses on the Electro-Magnetic (EM) radiation behavior of power inductor(s) in DC-DC converters, which is dependent on several parameters such as ripple current, switching frequency, rise & fall time of a switching device, the core […]
3V3/30V DC/DC converter using SN6505A
Robert Gawron made a 3V3/30V DC/DC converter using SN6505A: Recently I’v got my samples of SN6505A, it’s a really nice IC, so I decided to make a simple DC/DC converter to get familiar with it. What I like in this chip is that it can operate on input voltage as low as 2,5V – that […]
Output voltage control of DC/DC converters
Thomas Fischl writes: Some applications needs to control the output voltage of a dc/dc converter instead using a fixed output voltage. For example battery chargers has to adjust the output voltage to the current battery level. This page shows how to add such a control function to a buck converter circuit. Control output via external […]
LM2596 DC-DC converter module testing
Kerry D. Wong writes: In the video below, I tested this DC-DC converter board under various operating conditions and measured its efficiencies. To conclude, these switching regulator boards are well suited for low to medium current draw digital circuitry but for higher current applications a heat sink is needed and even so I would not […]
App note: Medium power small-signal MOSFETs in DC-to-DC conversion
App note(PDF) from NXP on DC-DC medium power small-signal MOSFETs. This application note explores different methods of DC-to-DC conversion. It includes some examples of DC-to-DC down-converters using small-signal MOSFETs.
9V to 48V DC-DC converter
Konstantin Dimitrov over at Electronics Lab writes: This project is a 8-12Vdc to +48Vdc DC-DC converter based on MC34063 switching regulator. It’s a simple project of a DC-DC converter to make a phantom power supply for professional microphones. It can deliver 15-20mA at 48VDC. It ‘s based on MC34063 DC-DC step-up, step-down and boost converter. […]