MPS EVQ4488-U-00B User manual

EVQ4488-U-00B
Smart, Dual USB Charging Port Power
Converter with Programmable Frequency
for Automotive, AEC-Q100 Qualified
EVQ4488-U-00B Rev. 1.0 www.MonolithicPower.com 1
9/12/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The EVQ4488-U-00B Evaluation Board is
designed to demonstrate the capabilities of
MPS’ MPQ4488.The MPQ4488 integrates a
monolithic step-down switch-mode converter
with two USB current-limit switches and
charging port identification circuitry for each
port. It achieves 6A output current over a wide
input-supply range with excellent load and line
regulation.
The output of the USB switch is current limited.
Both USB ports support DCP schemes for
Battery Charging specification (BC1.2), the
Divider Mode, 1.2V/1.2V Mode and USB TYPE-
C 5V@3A DFP Mode eliminating outside user
interaction.
ELECTRICAL SPECIFICATION
Parameter Symbol Value Units
Operating Input
Voltage VIN 12 V
Switching
Frequency Fs 450 kHz
Output Voltage VUSB1/VUSB2 5.17 V
Output Current USB1_ IOUT 3 A
USB2_ IOUT 3 A
FEATURES
Wide 6V to 36V Operating Input-Voltage
Range
Selectable Output Voltage: 5.1V, 5.17V and
5.3V
90mV Line Drop Compensation
Accurate USB1/USB2 Output-Current Limit
18m/15mLow RDS(ON) Internal Buck
Power MOSFETs
18m/18mLow RDS(ON) Internal
USB1/USB2 Power MOSFETs
Load Shedding versus Temperature
Hiccup Current Limit for both Buck and USB
Supports DCP schemes for BC1.2, Divider
Mode, and 1.2V/1.2V Mode
Supports USB TYPE-C 5V@3A Mode
APPLICATIONS
USB Dedicated Charging Ports (DCP)
USB Type-C Charging Port
A
ll MPS parts are lead-free, halogen free, and adhere to the RoHS directive. Fo
r
MPS green status, please visit MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
EVQ4488-U-00B EVALUATION BOARD
(L x W x H) 5cm x 5cm x 1.7cm
(Four Layer PCB/2oz per layer)
Board Number MPS IC Number
EVQ4488-U-00B MPQ4488
80
84
88
92
96
100
01234567

EVQ4488-U-00B, Smart, Dual USB Charging Port Power Converter
EVQ4488-U-00B Rev. 1.0 www.MonolithicPower.com 2
9/12/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
EVALUATION BOARD SCHEMATIC
Note: R7 and R8 are on the bottom side of EVB board.

EVQ4488-U-00B, Smart, Dual USB Charging Port Power Converter
EVQ4488-U-00B Rev. 1.0 www.MonolithicPower.com 3
9/12/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
EVQ4488-U-00B BILL OF MATERIALS
Qty Re
f
V
alue Description Package Manufacture
r
Part Numbe
r
5
C1A,
C1B,
C1C,C1D,
C1E
10F Ceramic Capacitor,
35V, X6S 0805 Murata
GRM21BC8YA106KE11
1 C1 100uF
Aluminum Electrolytic
Capacitor, 35V, 160m
ESR
SMT Chemi-Con EMZJ35ADA101MF80G
1 C2 270F Polymer Capacitor,6.3V DIP Chemi-Con APSK6R3ELL271ME08S
2 C2A, C2B 10F Ceramic Capacitor,
10V, X7R 0805 Murata GRM21BR71A106KE51L
1 C2C 10F Ceramic Capacitor,
6.3V, X7R 0603 Murata GRM219R60J106KE19D
1 C3 1F Ceramic Capacitor,
16V, X7R 0603 Murata GRM188R71C105KA12D
1 C4 0.22F Ceramic Capacitor,
10V, X5R 0402 Murata GRM155R61A224KE19
2 C5, C6 10F Ceramic Capacitor,
6.3V, X7R 0603 Murata GRM219R60J106KE19D
2 C7, C8 1nF Ceramic Capacitor,
25V, X7R 0603 Murata GRM188R71E102KA01D
0 R1,R2 NS
2 R3,R5 5.1KFilm Resistor, 1% 0603 Royal RL0603FR-075K1L
2 R4,R6 1KFilm Resistor, 1% 0603 Royal RL0603FR-071KL
2 R7,R8 150Film Resistor, 1% 0603 Royal RL0603FR-07150RL
1 L1 4.7H Inductor, DCR 7mSMT Wurth 7443551470
1 L2 2.2H Inductor, DCR 29mSMT Wurth 74438356022
2 USB1,
USB2 USB TYPE-C USB Port DIP Wurth 632723300011
1 U1 MPQ4488
Step Down Converter
with Dual USB
Charging Port
QFN26
(5mm5mm) MPS MPQ4488GU
1 CN1 Header
2.54mm, 14pin, Dual
pin header, default all
pins open
DIP Wurth 61301421121
2 JP1,JP2 Header 2.54mm, 3pin header,
default all pins open DIP Wurth 61300311121

EVQ4488-U-00B, Smart, Dual USB Charging Port Power Converter
EVQ4488-U-00B Rev. 1.0 www.MonolithicPower.com 4
9/12/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 12V, VOUT = 5.17V, L =4.7µH, TA= 25°C, unless otherwise noted.
USB Over-Current
Protection
USB
V
OUT
/AC
2V/div.
USB
I
OUT
/AC
A/div.
Power Start-up
V
IN
=12V, V
OUT
=5.17V,
USB1_I
OUT
=USB2_I
OUT
=3A
Power Shutdown
V
IN
=12V, V
OUT
=5.17V,
USB1_I
OUT
=USB2_I
OUT
=0A
Power Shutdown
V
IN
=12V, V
OUT
=5.17V,
USB1_I
OUT
=USB2_I
OUT
=3A
USB1
V
OUT
/AC
20mV/div.
V
SW
5V/div.
I
L
2A/div.
Output Ripple
V
IN
=12V, V
OUT
=5.17V,
USB1_I
OUT
=USB2_I
OUT
=0A
V
SW
5V/div.
I
L
2A/div.
Output Ripple
V
IN
=12V, V
OUT
=5.17V,
USB1_I
OUT
=USB2_I
OUT
=3A
Power Start-up
V
IN
=12V, V
OUT
=5.17V,
USB1_I
OUT
=USB2_I
OUT
=0A
USB2
V
OUT
/AC
20mV/div.
USB1
V
OUT
/AC
20mV/div.
USB2
V
OUT
/AC
20mV/div.
USB1_V
OUT
5V/div.
USB2_V
OUT
5V/div.
V
IN
10V/div.
USB1_I
OUT
2A/div.
USB2_I
OUT
2A/div.
USB1_V
OUT
5V/div.
USB2_V
OUT
5V/div.
V
IN
10V/div.
USB1_I
OUT
5A/div.
USB2_I
OUT
5A/div.
USB1_V
OUT
5V/div.
USB2_V
OUT
5V/div.
V
IN
10V/div.
USB1_I
OUT
5A/div.
USB2_I
OUT
5A/div.
USB1_V
OUT
5V/div.
USB2_V
OUT
5V/div.
V
IN
10V/div.
USB1_I
OUT
5A/div.
USB2_I
OUT
5A/div.
Load Shedding Recovery
VIN=12V, VOUT=5.17V
Load Shedding Entry
VIN=12V, VOUT=5.17V
USB1_V
OUT
2V/div.
V
CC1
1V/div.
USB1_I
OUT
1A/div.
USB1_V
OUT
2V/div.
V
CC1
1V/div.
USB1_I
OUT
1A/div.

EVQ4488-U-00B, Smart, Dual USB Charging Port Power Converter
EVQ4488-U-00B Rev. 1.0 www.MonolithicPower.com 5
9/12/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 12V, VOUT = 5.17V, L =4.7µH, TA= 25°C, unless otherwise noted.
80
84
88
92
96
100
01234567
0
10
20
30
40
50
60
70
80
90
100
0 0.5 1 1.5 2 2.5 3

EVQ4488-U-00B, Smart, Dual USB Charging Port Power Converter
EVQ4488-U-00B Rev. 1.0 www.MonolithicPower.com 6
9/12/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
PRINTED CIRCUIT BOARD LAYOUT
Figure 1—Top Silk Layer Figure 2—Top Layer
Figure 3—Middle1 Layer Figure 4—Middle2 Layer
Figure 5—Bottom Layer

EVQ4488-U-00B, Smart, Dual USB Charging Port Power Converter
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
EVQ4488-U-00B Rev. 1.0 www.MonolithicPower.com 7
9/12/2017 MPS Proprietary Information. . Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
QUICK START GUIDE
1. Connect the positive and negative terminals of the load to the USB1, USB2 and GND pins,
respectively.
2. Preset the power supply output between 6V and 36V, and then turn off the power supply.
3. Connect the positive and negative terminals of the power supply output to the VIN and GND
pins, respectively.
4. Turn the power supply on, the board will automatically start up. But if no type-C device is
attached, there is no Vbus output.
5. For USB Type-C 5V/3A DFP mode, if no type-C device is attached, short pin1 and pin 3 of CN1
with a jumper to enable USB1 output, short pin 11 and pin 13 of CN1 with a jumper to enable
USB2 output; short pin 2 and pin 4 of CN1 with a jumper to enable VCONN1 output, short pin
12 and pin 14 of CN1 with a jumper to enable VCONN2 output.
If type-C device is attached, all CN1 pins should be float.
6. For USB Type-A 5V/2.4A mode, change R3 =80.6kand connect pin1 and pin 3 of CN1 with a
jumper to enable USB1 output, change R5 =80.6kand connect pin 11 and pin 13 of CN1 with
a jumper to enable USB2 output. Keep R4, R6 float. Remove C7 and C8.