Digital signal controller for digital power supply control
23 April 2012
YEG Components has announced the availability of the New Japan Radio NJU20300 and NJU20301.
These small footprint, low power consumption digital signal controllers (DSC) are for digitally controlled, switch mode power supplies and motor controllers. The products are an ideal solution for many applications including office automation equipment such as multifunction office machines and mobile telecommunications equipment.
New generation industrial apparatus such as office automation equipment and communication base stations require the further miniaturisation and integration of components and together with further reductions in power-consumption. NJU20300 series was developed so that these demands could be satisfied.
As well as the small footprint, the efficient low power consumption and 1MHz operation of the NJU20300/1 allows developers to select smaller peripheral components such as coils and capacitors, contributing to the miniaturisation of electronic equipment.
In the NJU20300 series, the comparator with a D/A converter and oscillation circuit are built in, further helping to simplify circuit design and reduce the external components.
Component reduction and external circuitry is simplified by using a single power rail of 3.3V rather than the predecessors (NJU20010/20011 requiring both 1.8V and 3.3V)
SAR ADC can easily control auxiliary functions such as motor and quadrature encoders using the 10bit ADC. NJU20300 series can select a SAR (successive approximation) ADC or differential ADC (sequentially).
The SAR ADC has two sample hold circuits which can perform as a quadrature encoder interface (QEI). The operation can be set-up as a timer module to control motors individually.
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