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Demonstration System EPC9048
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Figure 3: Proper Measurement of Switch Node – OUT
Figure 2: Proper Connection and Measurement Setup
8, 160
60
Probe tip
Ground
Figure 4: Typical Waveforms for EPC9048. V
IN
= 150 V to 7.5 V/10 A (50 kHz) Buck converter showing rising and falling edges,
CH2: (V
PWM
) Input logic signal – CH4: (I
OUT
) Output inductor current – CH1: (V
OUT
) Switch node voltage
8, 160
60
Additional bus capacitance
can be added on back
Gate Drive Supply
(Note Polarity)
+
7 V – 12 V
PWM Input
+
V
DD
Supply
V
IN
(For Efficiency
External Circuit
Measurement)
_
_
V
+
_
A
I
IN
V
IN
Supply
Switch Node
<160 V
