MOSFET DRIVER

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Active Miller clamp
A Miller clamp allows the control of the Miller current during a high dV/dt situation and can 
eliminate the need for a negative supply voltage.
During turn-off, the gate voltage is monitored and the clamp output is activated when gate 
voltage goes below 2 V (relative to GND). The clamp voltage is VL+3 V max for a Miller 
current up to 500 mA. The clamp is disabled when the IN input is triggered again.

A Miller clamp allows the control of the Miller current
during a high dV/dt situation and can eliminate the use
of a negative supply voltage in most of the applications.
During turn-of , the gate voltage is monitored and the
clamp output is activated when gate voltage goes below
2V (relative to VEE). The clamp voltage is VOL+2.5V typ
for a Miller current up to 1100mA. The clamp is disabled
when the LED input is triggered again.



  • IR AN978
As an added safety margin a resistor diode network can be added to the gate, as shown with 
dashed lines in Figure 28A. The purpose of this network is to further delay the turn-on, without 
affecting the turn-off, thereby inserting some additional dead-time.   The resistor-diode network is 
also useful in reducing the peak of the current spike during the reverse recovery time. As 
explained in Ref. 2, this has an impact on power  losses, as well as dv/dt and EMI. Figures 28A & 
28B show the waveforms taken from a test circuit  laid out as shown in Figure 10. Operation at 
500 kHz with the IRF830 HEXFET did not present any problem nor cause any noticeable heating 
of the IR2110.


Bipolar Totem Pole Drive

ZETEX

300px

  • Hard to find but good price, only Arrow, Rutronik
  • 4A output from 1mA input, 8A output from 2mA input
ZXGD3006E6 is a 40V Gate Driver for switching IGBTs and SiC MOSFETs. 
It can transfer up to 10A peak source/sink current into the gate 
for effective charging and discharging of a large capacitive load

NXP


Yang

  • Suggesting NPN-PNP pair (Bipolar Totem-Pole) with third speed-up NPN




University of Newcastle, AustraliA