If the SMPS has an AC input, then the first stage is to convert the input to DC. This is called rectification. An SMPS with a DC input does not require this stage.

The inverter stage converts DC, whether directly from the input or from the rectifier stage described above, to AC by running it through a power oscillator, whose output transformer is very small with few windings at a frequency of tens or hundreds of kilohertz. The switching is implemented as a multistage (to achieve high gain) MOSFET amplifier. MOSFETs are a type of transistor with a low on-resistance and a high current-handling capacity.

If the output is required to be isolated from the input, as is usually the case in mains power supplies, the inverted AC is used to drive the primary winding of a high-frequency transformer. This converts the voltage up or down to the required output level on its secondary winding. The output transformer in the block diagram serves this purpose. If a DC output is required, the AC output from the transformer is rectified. For output voltages above ten volts or so, ordinary silicon diodes are commonly used. The rectified output is then smoothed by a filter consisting of inductors and capacitors. For higher switching frequencies, components with lower capacitance and inductance are needed.

For, non-isolated power supplies contain an inductor instead of a transformer. This type includes:-

1) boost converters,

2) buck converters,

3) buck-boost converters.

These belong to the simplest class of single input, single output converters which use one inductor and one active switch A feedback control loop is employed to regulate the output voltage by varying the duty cycle to compensate for variations in input voltage. For an optimized power supply Custom Design is mandatory thus having different Voltage and Current ratings. Akshat Autoline Pvt. Limited Specializes in this area by helping industries reduce their R&D costs, add various features keeping in mind the technical specifiaction and world class quality standards.

Power Supply Features and Capability

• • Input Voltage Range: AC-DC: 50V to 265V rms DC-DC: 9V DC to 400V DC

  • Output Wattage: Upto 2KW

  • Power Factor >0.9 by active PFC control

  • Isolated & Non-Isolated multiple design

  • Battery chaA regulated power supply is one that controls the output voltage or current to a specific value; the controlled value is held nearly constant despite variations in input load current or the voltage supplied by the power supply.Power supplies for electronic devices can be broadly divided into line-frequency and switching power supplies. The line-frequency supply is usually relatively simple design, but it becomes increasingly bulky and heavy for high-current equipment due to the need for large mains-frequency transformers and heat-sinked electronic regulation circuitry. A switched-mode supply of the same rating as a line-frequency supply will be smaller, is usually more efficient, but will be more complex.rges with float-boost charging

  • Load & line regulation < -/+ 1%

  • Efficiency >90%

  • EMI/EMC & safety compliance to international standards like IEC,UL,VDE

  • Protections for overload,over-voltage,short circuit, over temperature,reverse polarity(Battery Chargers)

  • Packaging in open frames cabinet, rack mount, industry standard modules & brick Modules.