MCP1012 1W Demonstration Board User’s Guide
DS50002932A-page 20
2020 Microchip Technology Inc.
7. Check on the oscilloscope screen the V_GATE voltage and the C/S signal, as
they are presented in
FIGURE 4-1:
MCP1012 V_GATE and C/S Voltage.
During the Leading Edge Blanking (LEB) period the spikes on C/S pin are ignored. After
LEB, once the C/S voltage reaches the threshold of 125 mV, the GATE signal is
inhibited.
8. Check on the oscilloscope screen the V_GATE voltage, as it is presented in
. Set the oscilloscope accordingly.
FIGURE 4-2:
MCP1012 V_GATE Voltage.
The value of the resistor connected to LFO pin is 47.5 k
. This value conducts to an
LFO period of 1.06 ms or a frequency of 943 Hz. On each LFO period, a number of 16
pulses can be seen.
