Hardware

AN3151

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Doc ID 17051 Rev 1

1

Hardware

The hardware is mainly composed of the power conversion section and the control stage,

based on the microcontroller unit.

From a common DC voltage input the 4 strings are driven by 4 inverse DC-DC buck

converters.

The inverse buck converter offers advantages not only in the driving section and the ground

referred circuitry but also in terms of cost.

All these aspects are explained in detail in the power stage.

The principle schematic of the circuit described in this application note is shown in Figure 1.

Figure 1.

Principle schematic of the circuit described