|
|
|
Synchronous boost converter
29 May 2019, Power Electronics / Power Management
The superior properties of Li-ion batteries, such as high energy density, light weight, no memory effect, and less self-discharge, make them a very popular option in portable applications.
ICs with boost topology are needed in portable applications since the voltage fluctuation of most Li-ion batteries ranges from 4,2 V (fully charged) to 3,0 V (fully discharged), while the post-circuit input voltage is up to 12 V or more.
Portable applications, such as Bluetooth audio, quick-charge power banks and portable POS systems, employ various boost products available in the market, including discrete controllers with external MOSFETs, non-synchronous boost converters with an external diode, and limited input/output voltage ranges or features. These solutions take up more space, require more components while providing less efficiency, and compromise performance in terms of noise and reliability.
The MP3432 from Monolithic Power Systems (MPS) operates from an input voltage as low as 2,7 V, supports an operating input voltage from 0,8 V to 13 V, and an output voltage up to 16 V. Furthermore, it integrates two synchronous MOSFETs with optimised features, such as a programmable switching current limit up to 21,5 A, up to 30 W of load power from a single-cell battery, pass-through mode in pulse-skip mode (PSM) operation, various operation modes, and high power density in a QFN (3 x 4 mm) package.
This converter eliminates the need for inefficient and bulky external Schottky diodes by integrating small 6,5 mΩ and 10 mΩ RDS(ON) power MOSFETs using MPS’ latest process technology, advanced circuit design techniques and packaging technology. It achieves peak efficiency up to 97% at a 4,2 V input voltage and more than 85% in the main operating range with excellent thermal performance.
The MP3432 adopts a constant-off-time (COT) control topology, which provides fast transient response and reduces the output capacitance, which further contributes to reducing the overall solution size.
For more information contact NuVision Electronics, +27 11 608 0144, gdeklerk@nuvisionelec.co.za, www.nuvisionelec.com |
|
|
|
| Share: |
 |
Via email client |
 |
 |
 |
 |
print |
|
|
|
|
|
Further reading:
- High-side switch for 12 V systems
29 May 2019, Altron Arrow, Power Electronics / Power Management
The Power PROFET BTS50010-1TAE from Infineon Technologies is a high-side switch designed to drive currents up to 40 A d.c. in 12 V systems. With an on-resistance down to 1,0 m, the device is packaged ...
- USB-C buck charger
29 May 2019, CST Electronics, Power Electronics / Power Management
Designers of portable Li-ion battery-powered electronics can add a USB Type-C (USB-C) charging system to their products with the MAX77860 3A switch-mode charger from Maxim Integrated Products. The device ...
- PMBus power modules
29 May 2019, Hi-Q Electronics, Power Electronics / Power Management
Renesas’ new encapsulated hybrid digital power modules offer high power density and efficiency for advanced FPGAs, DSPs, ASICs and memory. The ISL8210M and ISL8212M feature power density of 115 mA/mm2 ...
- LEDs recognised for achieving natural light spectrum
29 May 2019, NuVision Electronics, Opto-Electronics
Seoul Semiconductor’s SunLike range of natural spectrum LEDs, first announced in 2017, have gone on to be recognised as an innovative technology for human-centric lighting at global lighting awards held ...
- SiC MOSFETs and Schottky diodes
29 May 2019, Altron Arrow, Power Electronics / Power Management
Microchip Technology announced, via its Microsemi subsidiary, the production release of a family of SiC (silicon carbide) power devices that offer ruggedness and the performance benefits of wide-bandgap ...
- AC-DC linear regulator
29 May 2019, Avnet South Africa, Power Electronics / Power Management
Texas Instruments expanded its portfolio of linear regulators by introducing the TPS7A78, which uses a unique switched-capacitor architecture to eliminate discrete components, including external inductors ...
- Current shunt monitor
29 May 2019, Altron Arrow, Power Electronics / Power Management
ON Semiconductor’s NCP45491 is a high-performance monolithic IC which can be used to monitor bus voltage and current on four high-voltage power supplies simultaneously.
The HV bus voltages and currents ...
- Power modules for avionics
29 May 2019, Conical Technologies, Power Electronics / Power Management
SynQor announced its new AeroQor product line specially designed for commercial avionics. The AeroQor range is composed of high-efficiency, isolated power factor correction modules (APFIC) and AC filters ...
- Railway DC-DC converters
29 May 2019, Conical Technologies, Power Electronics / Power Management
Traco Power announced the release of the new TEQ line of DC-DC converters for railway electronics systems. The TEQ 20WIR and 40WIR are two series of isolated modules with 4:1 input voltage ranges which ...
- High-frequency 650 V IGBTs
29 May 2019, Altron Arrow, Power Electronics / Power Management
The STMicroelectronics HB2 650V IGBT series delivers efficiency and performance gains for medium- and high-speed applications such as PFC converters, welders, uninterruptible power supplies (UPS) and ...
- Rugged buck converter
29 May 2019, RS Components (SA), Power Electronics / Power Management
The LM5164 from Texas Instruments is a 100 V, 1 A synchronous DC-DC buck converter. Used in conjunction with TI’s WEBENCH Power Designer, this wide-input-voltage device can be used to reduce board space ...
- 250 W quarter-brick converter
29 May 2019, Accutronics, Power Electronics / Power Management
GAIA Converter has expanded its range of high-power quarter-brick DC-DC converters with the addition of a 250 W output module. The MGDI-254 series is designed for use in distributed power architecture ...
|
|
