MPQ4480 – 36V, 6A, SYNC STEP-DOWN CONVERTER FOR AEC1-Q100 QUALIFIED

MPQ4480 Rev. 1.0

www.MonolithicPower.com

11

7/2/2019

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TYPICAL PERFORMANCE CHARACTERISTICS (continued)

VIN = 12V, VOUT = 5V, L = 4.7µH, fSW = 440kHz, TA = 25°C, unless otherwise noted. All waveforms

are tested based on bypassing the external MOSFET except Short Battery to Ground.

VOUT Short to USB_GND Entry

IOUT = 0A

VOUT Short to USB_GND Steady

State

IOUT = 0A

CH1: VOUT

5V/div.

CH2: VGATE

5V/div.

CH3: VSW

10V/div.

CH4: IL

10A/div.

CH1: VOUT

5V/div.

CH2: VGATE

5V/div.

CH3: VSW

10V/div.

CH4: IL

10A/div.

20µs/div.

1s/div.

VOUT Short to USB_GND Recovery

IOUT = 0A

USB_GND Short to Battery Entry

and Recovery

IOUT = 0A

CH1: VOUT

5V/div.

CH2: VGATE

5V/div.

CH3: VSW

10V/div.

CH4: IL

10A/div.

CH1: VOUT-

USB_GND

5V/div.

CH2: VGATE

5V/div.

CH3: VSW

10V/div.

CH4: ISHORT

20A/div.

1ms/div.

500ms/div.

Sync Function

fSW = 300kHz, L = 4.7µH, IOUT = 6A

Sync Function

fSW = 2.1MHz, L = 2.2µH, IOUT = 6A

CH1: VOUT

2V/div.

CH2: VSYNC

5V/div.

CH3: VSW

10V/div.

CH4: IL

5A/div.

CH1: VOUT

2V/div.

CH2: VSYNC

5V/div.

CH3: VSW

10V/div.

CH4: IL

5A/div.

5μs/div.

1μs/div.