MP5030C

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

MP5030C Rev. 1.01

www.MonolithicPower.com

12

9/28/2018

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© 2018 MPS. All Rights Reserved.

OPERATION

The MP5030C integrates a USB current-limit

switch and charging port identification circuit.

The MP5030C achieves 3A of continuous

output current over a wide input supply range.

The output of the USB switch is current-limited

with an adjustable current-limit threshold. The

MP5030C

supports

the

quick-charge

specification

(QC

3.0)

and

is

backwards-

compatible with QC 2.0. The MP5030C also

supports

DCP/CDP

schemes

for

battery

charging specification (BC1.2), divider mode,

and 1.2V/1.2V mode without the need for

external user interaction.

The MP5030C provides line drop compensation

for a 5V output. Fault condition protection

includes hiccup current limiting, input over-

voltage

protection

(OVP),

and

thermal

shutdown.

Operation Supply Voltage

The MP5030C has a two-stage input voltage

threshold. The first threshold is around 3V, and

the second threshold is the under-voltage

lockout (UVLO) of the power MOSFET. When

MP5030C's ADJ block starts working and sinks

a current to adjust the upstream regulator's

output to an accurate 5V. Afterward, the

MP5030C enters a fully working state.

Under-Voltage Lockout (UVLO)

UVLO protects the chip from operating at an

insufficient supply voltage. The MP5030C's

second UVLO comparator monitors the input

voltage. Once the input voltage is higher than

the

second

UVLO

threshold,

the

power

MOSFET starts to turn on with a controlled slew

rate after a fixed delay.

Internal Soft Start (SS)

The internal soft-start prevents the output

voltage from inrush current and overshooting

during start-up.

MODE Selection

The MP5030C supports DCP and CDP modes

through MODE control. Pull MODE high to

operate the USB in DCP mode with the QC

function. Float MODE to operate the USB in

DCP mode without the QC function. Pull MODE

low to operate the USB in CDP mode.

In DCP mode, the MP5030C can provide power

for USB devices with protocol auto-detection. It

supports the following charging schemes:

 USB

battery

charging

specification

BC1.2/Chinese

Telecommunications

Industry

 Standard YD/T 1591-2009

 Divider mode

 1.2V/1.2V mode

 Quick-charge mode 2.0

 Quick-charge mode 3.0 (3.6 - 12V)

For better data transmission performance in

CDP mode, use the MP5030C in USB CDP

mode for handshaking. Bypass DP to DP_OUT.

DM to DM_OUT switches internally (see Figure

2).

DM

DP

Type-

A

DM_OUT

DP_OUT

To HOST

Controller

MP5030C

R8, 1kΩ

L2,Bead,

2.5kΩ

@100MHz

Figure 2: CDP Mode Set-Up

around 5V with current limit and line drop

compensation (see Table 1).

Table 1: MODE Selection

MODE Status

Supported Charge Mode

Logic high

DCP mode, divider mode,

QC2.0, QC3.0 mode, 1.2V/1.2V

mode

Float

DCP mode without QC function,

divider mode, 1.2V/1.2V mode

Logic low

compensation

Connect DP and DM with a

150Ω resistor for

DCP without QC mode.

Line Drop Compensation

The MP5030C can compensate for an output

voltage drop, such as high impedance caused

by a long trace, to maintain a fairly constant 5V

load-side voltage. Line drop compensation is

achieved

through

ADJ.

The

MP5030C

increases the input voltage by 220mV at a 2.4A

output current (see Figure 3).