The 2ED2101S06F provides 0.29 and 0.7 amps of source and sink current, respectively.Ī typical, but simplified illustration of the 2ED2101S06F driving two N-channel MOSFETS. A lengthy description of the circuitry and of calculating the size of the capacitor is provided in section 5.8 of the 2ED2110S06M datasheet The diode charges the capacitor up to the power supply voltage, and at the right moment, that power supply voltage is added to the 12-volt input signal, enough to turn on the MOSFET and power the load. To generate the extra voltage, a bootstrapping circuit is devised, composed mainly of a capacitor and the bootstrap diode. To provide a differential of 12 volts between gate and source, 24 volts is needed at the gate. That’s because with 12 volts across the load, the source is also at 12 volts, and there will be no potential difference between gate and source. Image courtesy of MOSFET Bootstrapping video (4:10)īut, a 12-volt input signal to the gate will not sustain current across the load. In the image below, an N-channel device is proposed as a high side gate driver. In order to use an N-channel MOSFET as a high side driver, a Bootstrap diode is necessary. The problem here is that N-channel MOSFETs have superior RDS(ON)s as compared to P-channel devices. In a previous article on the EICEDrivers, we illustrated a P-channel high side driver. The gate drivers both feature a propagation delay of 90ns with a maximum of 10ns delay matching. Maximum supply voltage is 25 volts, and the units are compatible with 3, 5 and 15 volt input logic. They offer UVLO for both channels and Schmitt trigger inputs with hysteresis. They feature operating voltages of up to +650 volts and negative VS transient immunity of 100 volts.
The newest EICEDrivers are designed to drive MOSFETs and IGBTs. The units are based on the company’s silicon-on-insulator technology, with each transistor isolated by buried silicon dioxide, preventing parasitic latch over all temperature and voltage conditions. The 2ED2110S06M and the 2ED210XS06F are the newest members of Infineon’s EICEDriver family.
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