8.2.2 Application Curves

Figure 8-2 shows the typical response of the AMC23C15 to a bipolar, triangular input waveform with an

amplitude of 140 mVPP. OUT1 switches when VIN crosses the ±50-mV level determined by the REF pin voltage

that is biased to 50 mV in this example. OUT2 switches when VIN crosses the ±60-mV level determined by the

fixed internal reference value.

Figure 8-2. Output Response of the AMC23C15 to a Triangular Input Waveform

The integrated LDO of the AMC23C15 greatly relaxes the power-supply requirements on the high-voltage side

and allows powering the device from non-regulated transformer, charge pump, and bootstrap supplies. As given

by the following images, the internal LDO provides a stable operating voltage to the internal circuitry, allowing the

trip thresholds to remain mostly undisturbed even at ripple voltages of 2 VPP and higher.

VDD1 Ripple Voltage (VPP)

0

1

2

3

4

5

0

0.2

0.4

0.6

0.8

1

1.2

1.4

D063a

VDD1 = 5 V

VDD1 = 10 V

Figure 8-3. Trip Threshold Sensitivity to VDD1

Ripple Voltage (Cmp0, fRIPPLE = 10 kHz)

VDD1 Ripple Voltage (VPP)

0

1

2

3

4

5

0

0.2

0.4

0.6

0.8

1

1.2

1.4

D063b

VDD1 = 5 V

VDD1 = 10 V

Figure 8-4. Trip Threshold Sensitivity to VDD1

Ripple Voltage (Cmp1, fRIPPLE = 10 kHz)

AMC23C15

SBASAP9 – MARCH 2023

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