AN3401

SPV100x functionalities

Doc ID 018842 Rev 1

5/18

2

SPV100x functionalities

The SPV100x consists of a power MOSFET transistor properly controlled by a gate driver +

charge pump + tank capacitor system, such as that explained in Figure 4:

Figure 4.

SPV100x internal architecture

This architecture allows the following functionalities to be performed:

●

boosting, with a charge pump, the voltage drop on the body diode of the power

MOSFET itself.

●

To drive the gate of the power MOSFET with the charge previously stored in the tank

So, the forward voltage drop between anode (source) and cathode (drain) terminals during

the MOSFET switching, is shown in Figure 5 below:

Figure 5.

SPV100x forward voltage drop