MP5030C

– USB CHARGING PORT CONTROLLER SUPPORTING CDP, DCP, AND QC3.0

MP5030C Rev. 1.01

www.MonolithicPower.com

14

9/28/2018

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2018 MPS. All Rights Reserved.

Short-Circuit Protection (SCP)

If the load current increases rapidly due to a

short circuit, the current may exceed the

current-limit threshold greatly before the control

loop can respond. If the current reaches an

internal secondary current-limit level (about 6A),

a fast turn-off circuit activates to turn off the

power MOSFET. This limits the peak current

through the switch to limit the input voltage drop.

The typical fast-off response time value is

700ns. If the fast off-works, the power MOSFET

remains off

for 80μs. Afterward, the power

MOSFET turns on again. If the part is still in a

short-circuit condition, the MP5030C treats this

as an over-current condition and enters hiccup

mode or thermal shutdown. After the short-

circuit condition is removed, the MP5030C

recovers automatically.

Thermal Shutdown

Thermal shutdown prevents the chip from

operating at exceedingly high temperatures.

When the silicon die temperature exceeds

160°C, the entire chip shuts down. When the

temperature falls below its lower threshold

(typically 135°C), the chip is enabled again.