51 Research and Design, Electronic Engineers website - Embedded Systems, MCU, DSP, EDA, Test and Measurement, Components, Communications, Power, Microelectronics, Semiconductors

Monday, February 2nd, 2009 at 17:53 | No comments

Categories: Power Supply

Tags: handset, pulse-duration modulation, Switching power supply, TO0Switch, TOP227Y

Short Content: Abstract: Introduced one kind uses the TOP227Y intelligence integration chip design the switching power supply. Introduced this chip performance characteristic in detail. Has given this switching power supply's design method according to the TOP227Y characteristic, has carried on the detailed introduction to peripheral circuit's design, and has given this switching power supply's performance test result.Key word: Switching power supply; TO0Switch: Pulse-duration modulation O introduction     The TOPSwitch monolithic switching power supply chip is American PI Corporation the new high frequency switching ...

Wednesday, October 29th, 2008 at 22:50 | No comments

Categories: SCM

Tags: Converter, DC/DC, numerical control, pulse-duration modulation, synchronization rectification

Short Content: Abstract: Proposed one kind of novel bidirectional DC/DC converter. This transformation clamour uses entire numerical control, and the application synchronization rectification technology, enables the entire design to have the high efficiency, the high control performance, the energy to be possible characteristics and so on two-way flow. This converter's control core is PHILIPS Corporation produces based on ARM7 the essence LPC2119 micro controller. Introduced system's basic constitution, has analyzed electric circuit's principle of work and the main primary device's selection method, ...

Wednesday, September 17th, 2008 at 09:09 | No comments

Categories: DSP

Tags: digitization, Invertor; Digital signal processor, pulse-duration modulation, space vector

Short Content: Abstract: Proposed produces the SVPWM wave with DSP to realize the entire numerical control one method to the contravariant power source. In has analyzed in the TMS320LF2407A digital signal processor chip characteristic foundation, has given the system design software and hardware structure. The experiment indicated that the system circuit is simple, the reliability is high, but the promotion is strong.Key word: Invertor; Digital signal processor; Digitization; Space vector pulse-duration modulationO introduction    Along with information technology's development, the 400Hz intermediate frequency ...