MP5981

– 16V, 50A, 1.1mΩ RDS(ON), HOT-SWAP INTELLI-FUSE SOLUTION

MP5981 Rev. 1.3

MonolithicPower.com

13

5/16/2022

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TYPICAL PERFORMANCE CHARACTERISTICS (continued)

VIN = 12V, COUT = 4700µF, CSS = 100nF, RCS = RIMON = 2kΩ, RCLREF = 100kΩ, GOK is pulled up to

VDD3, TA = 25°C, unless otherwise noted.

Short-Circuit Start-Up

D_OC Status at Normal Operation

Increase load, D_OC is pulled down when CS

reaches 0.85V

CH1: D_OC

2V/div.

CH3: GOK

2V/div.

CH2: CS

500mV/div.

CH4: IIN

10A/div.

CH1: VOUT

5V/div.

CH3: D_OC

2V/div.

CH2: CS

500mV/div.

CH4: IIN

25A/div.

1ms/div.

800µs/div.

VIN OVP in Latch Mode

IOUT = 5A, apply 18.5V on VIN, then turn off

VIN

VIN OVP in Hiccup Mode

IOUT = 1A, apply 18.5V on VIN, then reduce VIN

CH2: VIN

10V/div.

CH1: VOUT

10V/div.

CH3: GOK

2V/div.

CH4: IIN

5A/div.

CH2: VIN

10V/div.

CH1: VOUT

10V/div.

CH3: GOK

2V/div.

CH4: IIN

25A/div.

10ms/div.

4000ms/div.

Current Balance During Start-Up

at Paralleling

3-MP5981 parallel, RIMON = RCS per MP5981,

IOUT = 0A

Current Balance During Start-Up

at Paralleling

3-MP5981 parallel, RIMON = RCS per MP5981,

IOUT = 37.5A

CH1: VOUT

5V/div.

CH2: CS1

200mV/div.

CH3: CS2

200mV/div.

CH4: CS3

200mV/div.

CH1: VOUT

5V/div.

CH2: CS1

200mV/div.

CH3: CS2

200mV/div.

CH4: CS3

200mV/div.

4ms/div.

4ms/div.