Active-semi ACT4529EVK1 User manual

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Rev 1.0, 20-July-17
Innovative Power
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ActiveSwitcher
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1
ACT4529EVK1 User’s Guide
USB Type C Car Charger Solution
Description
This document describes the characteristic and operation of the Active Semi ACT4529EVK1 evaluation kit
(EVK). It provides setup and operation instructions, schematic, layout, BOM, and test data. This EVK
demonstrates the ACT4529YH-T1011. Other ACT4529YH-Txxx options can be evaluated on this EVK by
replacing the IC and any other necessary components.
Features
The EVK is a complete, stand-alone USB-PD and QC2.0 car charger solution. It is built with an automotive car
charger form factor to show performance in a real form factor application. The EVK contains the high efficiency
ACT4925 step-down DC/DC converter that operates in either CV(Constant Output Voltage) mode or
CC(Constant Output Voltage) mode.
The EVK features a USB Type C output connector with USB-PD, QC2.0, and USB Auto Detect decoding
protocols. Decoding is implemented with an on-board FUSB302TMPX USB Type-C controller and
STM32F030F4P6 MCU. The EVK provides up to 3.0A output current at 125kHZ switching frequency. It operates
from Vin=12V to 36V and provides an output voltage of 5.1V, 9.1V, or 12.1V depending on the load’s requested
voltage. It charges Samsung and BC1.2 charging protocols at full charge current. Gerber files are available to
minimize time-to-market for applications that want to use the EVK as an end product.
Figure 1 – EVK Picture - Top
Figure 2 – EVK Picture - Bottom

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Rev 1.0, 20-July-17
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ActiveSwitcher
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Setup
Required Equipment
ACT4529EVK1 EVK
Power supply – 40V @ 4A for full power operation
Oscilloscope – >100MHz, >2 channels
Loads –Electronic/resistive load with 3.5A minimum current capability.
Digital Multimeters (DMM)
DC
Load
DC
Power
Figure 3 – EVK Setup
Hardware Setup
1. Connect a DC Power to the VIN and GND jumpers on the left side of the EVK.
2. Using a USB Type C connector, connect the EVK output to an electronic load.
3. Do not connecting anything to J2. J2 is a programming header.

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ActiveSwitcher
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Recommended Operating Conditions
Table 1. Recommended Operating Conditions
Parameter Description Min Typ Max Unit
VIN All buck input voltages 10 12 36 V
IOUT Maximum load current 3.0 A
EVK Operation
Turn on
Apply the 12V input voltage. The portable load can be connected before or after the input voltage is applied.
LED1 turn on to indicate that the buck converter is operational. LED2 turns on to indicate that the IC has properly
communicated with output load and is delivering power to the output connector.
PCB Layout
Top Layer
AGND Layer

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PGND Layer
Bottom Layer

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ActiveSwitcher
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Test Results
Output Regulation
Float the PDC pin Vout is 5.1V, Connect the PDC pin to GND Vout is 9.1V, Connect the PDC pin to 3.3V(connect
to C14) Vout is 12.1V. Set DC electronic load to CC mode. Increase output current from 0A to 3A and measure
the output voltage on C3 capacitor.
5
5.1
5.2
5.3
0 500 1000 1500 2000 2500 3000
Output Voltage（V）
Output Current(mA)
Load Regulation
(Vin=24V)
Vo=5V
9
9.1
9.2
9.3
0 500 1000 1500 2000 2500 3000
Output Voltage（V）
Output Current(mA)
Load Regulation
(Vin=24V)
Vo=9V

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ActiveSwitcher
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Efficiency (Ta=25℃)
12
12.1
12.2
12.3
0 500 1000 1500 2000 2500 3000
Output Voltage（V）
Output Current(mA)
Load Regulation
(Vin=24V)
Vo=12V
50%
60%
70%
80%
90%
100%
0 500 1000 1500 2000 2500 3000
Efficiency
Output Current(mA)
Efficiency (Vout=5.1V)
Vin=12V
Vin=18V
Vin=24V

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Power Loss
50%
60%
70%
80%
90%
100%
0 500 1000 1500 2000 2500 3000
Efficiency
Output Current(mA)
Efficiency (Vout=9.1V)
Vin=12V
Vin=18V
Vin=24V
50%
60%
70%
80%
90%
100%
0 500 1000 1500 2000 2500 3000
Efficiency
Output Current(mA)
Efficiency (Vout=12.1V)
Vin=18V
Vin=24V
0
500
1,000
1,500
2,000
2,500
3,000
0 500 1000 1500 2000 2500 3000
Power loss(mW)
Output Current(mA)
Power loss(Vout=5.1V)
Vin=12V
Vin=18V
Vin=24V

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Output Constant Current and Constant Voltage (Ta=25℃)
Set DC load to CC mode, increase output current from 0A to the maximum load current and measure the voltage
on the C3 capacitor. Then set DC electronic load to CV mode, decrease output voltage from maximum load
voltage to 0V and measure the output current and the output voltage on the C3 capacitor.
0
500
1,000
1,500
2,000
2,500
3,000
3,500
0 500 1000 1500 2000 2500 3000
Power loss(mW)
Output Current(mA)
Power loss(Vout=9.1V)
Vin=12V
Vin=18V
Vin=24V
0
500
1,000
1,500
2,000
2,500
3,000
3,500
0 500 1000 1500 2000 2500 3000
Power loss(mW)
Output Current(mA)
Power loss(Vout=12.1V)
Vin=18V
Vin=24V

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Vo=5.1V
Vo=9.1V
Vo=12.1V
3.0
3.5
4.0
4.5
5.0
5.5
6.0
0 500 1000 1500 2000 2500 3000 3500
Vout(V)
Output current(mA)
CC /CV profile
Vin=12V
vin=18V
Vin=24V
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
0 500 1000 1500 2000 2500 3000 3500
Vout(V)
Output current(mA)
CC /CV profile
Vin=12V
vin=18V
Vin=24V
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
0 500 1000 1500 2000 2500 3000 3500
Vout(V)
Output current(mA)
CC /CV profile
vin=18V
Vin=24V

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Standby Input Current
Current Limit vs. input voltage
Set DC electronic load to CV mode to measure the output current.
0
10
20
30
40
50
60
70
10 15 20 25 30 35 40
Input Current(mA)
Input Voltage(V)
Standby Input Current
Vo=5.1V
Vo=9.1V
Vo=12.1V
3000
3050
3100
3150
3200
3250
3300
10 15 20 25 30 35 40
Output Current(mA)
Input Voltage(V)
Current Limit VS. Input Voltage
Vo=5.1V
Vo=9.1V
Vo=12.1V

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Ripple and Noise
CH1 ： Vout
Vo=5V
Vin=12V 1A output load Vin=12V 3A output load
Vin=24V 1A output load Vin=24V 3A output load
Vout=9V
Vin=12V 1A output load Vin=12V 3A output load
Vin=24V 1A output load Vin=24V 3A output load

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ActiveSwitcher
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Vo=12V
Vin=18V 1A output load Vin=18V 3A output load
Vin=24V 1A output load Vin=24V 3A output load
Ripple & noise are measured by using 100MHz bandwidth limited oscilloscope.
Test Conditions Output Ripple
Vout(V) Vin(V) Io=1000mA Io=3000mA
5.1 12 25.0mV 28.5mV
24 33.0mV 35.5mV
9.1 12 17.0mV 18.0mV
24 41.0mV 54.0mV
12.1 18 34.0mV 35.5mV
24 41.5mV 51.0mV
Load Transient Response
CH1:Vout CH4:Iout
Vin=12V load step 80mA-1A -80mA Vin=12V load step 1A-3A-1A

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Vin=24V load step 80mA-1A -80mA Vin=24V load step 1A-3A-1A
Line Transient Response(Vin change from 12V to 40V，1V/us)
CH1:Vout CH3:Vin
Iout=1A Iout =3A

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Key Component Temperature Test
(Ta=27deg C, after 1 hour steady state operation)
Test condition
(Iout=3A) Component temperature(℃)
Vout Vin Temp in CLA PCB Output
Cap IC Diode Inductor
5V 12V 75 90 89 96 105 103
24V 81 96 95 103 115 112
9V 12V 85 97 94 102 108 106
24V 95 111 108 122 129 122
12V 12V 83 105 104 114 114 116
24V 89 112 110 125 129 125

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Schematics
GND
VUSB
LED2
PA4
VIN
PA3
DP
DM
47u
35V
+C4
220u
16V
+C5
VO
PA5
AGND
LED1
2.2n
C1 0 OhmR1
20mOhm
R2
2.2k
R4
1k
R5 300 Ohm
R6
100k
R12
100k
R13
2.2k
R7
100k
R3
0Ohm
R14
0Ohm
R9
0Ohm
R10
DNP
R11
R8
5.1Ohm
2.2u
C6
10u
C7
C10
2.2n
22u
C8
10n
C2
2.2u
C3
TP1
TP4
TP3
TP2
30uH
L1
PMOS
Q1
FDMA908PZ
10u
C9
ACT4529
CSP 1
CSN 2
PDC
3
DP
4
DM
5
IN
6
SW 7
HSB 8
EXP 9
U1
Q2
2N7002KW
Q3
2N7002KW
SSC54
D1
5A
FS1
FUSE
AGND
VO
100k
R18
PA5
PA4
PA3
3.3V
3.3V
VUSB
CC2
CC1
3.3V
SWCLK
SWDIO
GND
AGND
10k
R15
10k
R16
10k
R17
2.2u
C13
4. 7u
C15
10u
C12
0.1u
C14
0.1u
C16
0.1u
C11
220p
C17
220p
C18
BOOT
1
PF0/ OSC I N
2
PF1/ OSC OUT
3
nRST
4
VDDA
5
PA0
6
PA1
7
PA2
8
PA3 9
PA4 10
PA5 11
PA6 12
PA7 13
PB1 14
VSS
15
VDD
16
PA9 17
PA10 18
PA13 19
PA14 20
U3
IC, STM32F030F4P6
DAP
7NC 5
GND 2
IN
4OUT 6
CBYP
1
ON/ OFF
3
U4
LP2992
CC2 1
VBUS 2 VDD
3
VDD
4
/INT
5SCL
6SDA
7
GND
8
GND
9CC1 10
CC1 11
VCONN 12
VCONN 13
CC2 14
U2
IC, FUSB302TMPX
GND
A1
SSTXp1
A2
SSTXn1
A3
VBUS
A4
CC1
A5
Dp1
A6
Dn1
A7
SBU1
A8
VBUS
A9
SSRXn2
A10
SSRXp2
A11
GND
A12 GND B1
SSTXp2 B2
SSTXn2 B3
VBUS B4
CC2 B5
SBU2 B8
VBUS B9
SSRXn1 B10
SSRXp1 B11
GND B12
Dp2 B6
Dn2 B7
GND
J1
CONNECTOR, USB,TYPE C, REPL
GND
VUSB
CC1
DP
DM
VUSB
GND
GND
VUSB
DP
DM
VUSB
GND
CC2
GND
SWDIO
1
2
3
4
J2
Programming Header
AGND
SWCLK
3.3V

UG105
Rev 1.0, 20-July-17
Innovative Power
TM
ActiveSwitcher
TM
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Bill of Materials
# Designator QTY Description Package MFR Manufacturer PN
1 C1, C10 2 Cap, Ceramic, 2.2nF, 25V, 10%, X5R 0603 Standard
2 C2 1 Cap, Ceramic, 10nF, 16V, 10%, X5R 0603 Standard
3 C3, C13 2 Cap, Ceramic, 2.2uF, 16V, 10%, X5R 0603 Standard
4 C4 1 Cap, Electro, 47uF, 35V, 20% 6.3*7*2.5mm SAMWHA A1V476M6L07KVR
5 C5 1 Cap, Electro, 220uF, 16V, 10% 6.3*7mm HUAKAI SHK5227K0160607LLHT
6 C6 1 Cap, Ceramic, 2.2uF, 35V, 10%, X5R 0805 Standard
7 C7 1 Cap, Ceramic, 10uF, 35V, 10%, X5R 1206 Standard
8 C8 1 Cap, Ceramic, 22uF, 16V, 10%, X5R 0805 Standard
9 C9 1 Cap, Ceramic, 10uF, 16V, 10%, X5R 0805 Standard
10 C11, C14, C16 3 Cap, Ceramic, 0.1uF, 10V, 10%, X5R 0603 Standard
11 C12 1 Cap, Ceramic, 10uF, 6.3V, 10%, X5R 0603 Standard
12 C15 1 Cap, Ceramic, 4.7uF, 6.3V, 10%, X5R 0603 Standard
13 C17, C18 2 Cap, Ceramic, 220pF, 10V, 10%, X5R 0603 Standard
14 D1 1 Diode, Schottky, 40V, 5A SMC Standard SSC54
15 FS1 1 Fuse, 5A 1206 Littlefuse 1206SFS300F/32
16 J1 1 Connector, USB, Type C, Recept,
Horizontal THT & SMT
CON,UBS,
TYPE-C, Wurth 632723300011
17 J2 1 Header, Unshrouded , 2.54mm, Male,
4P Wurth 61300411121
18 L1 1 Ind, Torroid, 30uH, 4.5A, 35mohm
ESA31-00088F 6.5*13.2mm E&E Mag-
netics 831-03915F
19 LED1, LED2 2 LED, Green 0603 Wurth 150060VS75000
20 Q1 1 MOSFET, P-FET, 12V, 12.5mohm MicroFET2X2 FairChild FDMA908PZ
21 Q2, Q3 2 MOSFET, N-FET, 60V, 310mA SOT323 Standard 2N7002KW
22 R1 1 Res, 0Ohm 0603 Standard
23 R2 1 Res, 20mOhm, 1/4W, 1% 1206 Standard
24 R3, R12, R13,
R18 4 Res, 100k, 1/16W, 5% 0603 Standard
25 R4, R7 2 Res, 2.2k, 1/16W, 5% 0603 Standard
26 R5 1 Res, 1k, 1/16W, 5% 0603 Standard
27 R6 1 Res, 300Ohm, 1/16W, 5% 0603 Standard
28 R8 1 Res, 5.1Ohm, 1/16W, 5% 0603 Standard
29 R9, R10, R14 3 Res, 0Ohm 0603 Standard
30 R11 0 Res, 100Ohm 0603 Standard
31 R15, R16, R17 3 Res, 10k, 1/16W, 5% 0603 Standard
32 TP1, TP2 2 TEST POINT PC MINI .040"D RED tpt,keystone-
5000
Keystone
Electronics
33 TP3, TP4 2 TEST POINT PC MINI .040"D BLACK tpt,keystone-
5001
Keystone
Electronics
34 U1 1 IC, ACT4529, Buck with QC2.0, USB
Auto-Detect, USB-PD SO8-EP Active-Semi ACT4529YH-T1011
35 U2 1 IC, FUSB302TMPX, Programmable
USB Type-C Controller w/PD MLP-14 FairChild FUSB302TMPX
36 U3 1 IC, STM32F030F4P6, MCU TSSOP-20 ST STM32F030F4P6
37 U4 1 IC, LDO, 250mA WSON-6 Standard LP2992AILDX-3.3/NOPB

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38 - 1 PCB, PCB-0301-01 Standard PCB-0301-01
39 - 1 Firmware FairChild
FUSB302_Re-
lease_3p3p4_STM32F03
x_CLA_DEMO_5-3_9-
3_12-3_36W_Rp-
3A_noVDMs_Active-
Semi_20APR2017.bin