MP6543 – 12V, 2A, THREE-PHASE POWER STAGE

MP6543 Rev. 1.01

www.MonolithicPower.com

9

1/15/2020

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TYPICAL PERFORMANCE CHARACTERISTICS

VIN = VIN_LDO = 10V, A-phase switching with 20kHz frequency, B-phase LS on, C-phase disable,

VREF = 3.3V, current-sense resistor divider = 5kΩ, TA = 25°C, resistor + inductor load: 2Ω +

0.2mH/phase with star connection, unless otherwise noted.

Steady State

Duty = 10%

Steady State

Duty = 50%

CH1: PWM

5V/div.

CH2: SA

5V/div.

CH3: SOB

1V/div.

CH4: IOUTA

200mA/div.

CH1: PWM

5V/div.

CH2: SA

5V/div.

CH3: SOB

1V/div.

CH4: IOUTA

500mA/div.

20μs/div.

20μs/div.

Steady State

Duty = 90%

Power Ramp-Up

Duty = 10%

CH1: PWM

5V/div.

CH2: SA

5V/div.

CH3: SOB

1V/div.

CH4: IOUTA

1A/div.

CH1: VIN

5V/div.

CH2: SA

5V/div.

CH3: SOB

1V/div.

CH4: IOUTA

200mA/div.

20μs/div.

1ms/div.

Power Ramp-Up

Duty = 50%

Power Ramp-Up

Duty = 90%

CH1: VIN

5V/div.

CH2: SA

5V/div.

CH3: SOB

1V/div.

CH4: IOUTA

500mA/div.

CH1: VIN

5V/div.

CH2: SA

5V/div.

CH3: SOB

1V/div.

CH4: IOUTA

1A/div.

1ms/div.

1ms/div.