ACT4526 Application Notes

[email protected] Output QC2.0 Car Charger Solution
Application Report
ACT4526
FEATURES












Wide input voltage range from 6V to 32V
Transparent input voltage surge up to 40V
QC2.0 decoding, 5V/9V/12V output voltage regulation
2.4A output with Constant current regulation
125kHz switching frequency
Low standby input current <1mA
Good EMC performance
Under voltage protection at output short
<6mA average output current at output short
Output over voltage protection
Output cord compensation
Thermal shutdown protection
SPECIFICATION
DESCRIPTION
CONDITION
Output current limit range
Ripple Voltage
Efficiency at full load
MIN
TYP
MAX
UNITS
2400
2650
2900
mA
Vin=12V,ouput 5V/2.4A
46
Vin=12V,ouput 9V/2.4A
27
Vin=12V,ouput 11.6V/2.4A
19
Vin=24V,ouput 5V/2.4A
59
Vin=24V,ouput 9V/2.4A
72
Vin=24V,ouput 12V/2.4A
80
Vin=12V,ouput 5V/2.4A
89.6
Vin=12V,ouput 9V/2.4A
94.9
Vin=12V,ouput 12V/2.4A
96.7
Vin=24V,ouput 5V/2.4A
87.7
Vin=24V,ouput 9V/2.4A
92.4
Vin=24V,ouput 12V/2.4A
93.9
mVpp
%
ENVIRONMENTAL
ESD
Active-Semi, Inc.
Contact
8
kV
Through air
15
kV
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TABLE OF CONTENTS
1.
Demo Board Photo .................................................................................................................................3
2.
PCB Layout ............................................................................................................................................3
3.
Schematic ................................................................................................................................................3
4.
Bill of Materials ......................................................................................................................................4
5.
Functional Test ........................................................................................................................................5
5.1.
Output Regulation (on PCB board) ...........................................................................................................5
5.2.
Efficiency (Ta=25℃) .................................................................................................................................6
5.3.
Power Loss ................................................................................................................................................7
5.4.
Constant Current and Constant Voltage (Ta=25℃) ...................................................................................9
5.5.
Standby Input Current .............................................................................................................................12
5.6.
Ripple and Noise .....................................................................................................................................13
5.7.
Load Dynamic Response .........................................................................................................................15
5.8.
Output Voltage Transient .........................................................................................................................16
5.9.
Line Dynamic Response(Vin change from 12V to 40V, 0.1V/us) ...........................................................17
5.10.
6.
Key Components Temperature Test ( burning for 2 hours) .................................................................18
EMI TEST.............................................................................................................................................19
6.1.
Output=5V ...............................................................................................................................................19
6.2.
Output=9V ...............................................................................................................................................20
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1. DEMO BOARD PHOTO
2. PCB LAYOUT
PCB SIZE: 39.4mm*15.0mm
TOP LAYER
BOTTOM LAYER
3. SCHEMATIC
2
+Vin
F1 4A
6
1
CSN1 CSP
VIN
U1
ACT4526
SOP-8EP
GND
C3
2.2µF
25V
C1
47µF
35V
C2
10µF
25V
EP
C5
22nF/25V
8
DP
4
HSB
SW
R2
0Ω
R4
50mΩ
L1
7
47µH/3.5A
N/C
DM
3
D1
SS54
C4
2.2nF
25V
R1
5.1Ω
5
R3
50mΩ
Output
4
C6
220µF
16V
C7
10µF
16V
3
C9
2.2µF
16V
2
DD+
1
GND
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4. BILL OF MATERIALS
Item
Reference
1
L1
Choke Coil, Dip,T9*5*4mm, phi=0.6mm, L=47uH
1
2
D1
Schottky Diode, SK54BL, 40V/5A, SMB
1
Panjit
3
C1
Electrolytic capacitor, 47uF/35V, 6.3x8mm
1
Koshin
4
C2
Ceramic capacitor, 10uF/35V, X7R, 1206
1
Murata/TDK
5
C3
Ceramic capacitor, 2.2uF/35V, X7R, 0805
1
Murata/TDK
6
C4
Ceramic capacitor, 2.2nF/25V, X7R, 0603(optional)
1
Murata/TDK
7
C5
Ceramic capacitor, 22nF/25V, X7R, 0603
1
Murata/TDK
8
C6
Electrolytic capacitor, 220uF/16V, 7x11.5mm
1
Koshin
9
C7
Ceramic capacitor, 10uF/16V, X7R, 0805
1
Murata/TDK
10
C9
Ceramic capacitor, 2.2uF/16V, X7R, 0603
1
Murata/TDK
11
F1
1
Murata/TDK
12
R1
Fuse, 3A, 1206
( Replaced by 0Ω 0805 chip resistor )
Chip Resistor, 5.1Ω, 1/8W, 5%, 0805(optional)
1
Murata/TDK
13
R2
Chip Resistor, 0Ω, 1/10W, 5%, 0603
1
Murata/TDK
14
R3/R4
Chip Resistor, 50mΩ, 1/4W, 1%, 1206
2
Murata/TDK
15
U1
IC, ACT4526, SOP-8-EP
1
ACT
16
USB
USB Rev: A
1
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ACT4526 [email protected] QC2.0 Solution
5. FUNCTIONAL TEST
5.1. Output Regulation (on PCB board)
Vout=5V (With cord compensation)
VIN
Minimum
Output Voltage(V)
Maximum
Output Voltage(V)
Load Regulation
10V
5.09
5.22
2.5%
12V
5.09
5.22
2.5%
16V
5.09
5.22
2.5%
24V
5.09
5.022
2.5%
Iload
0A-2.4A
Vout=9V(With cord compensation)
VIN
Minimum
Output Voltage(V)
Maximum
Output Voltage(V)
Load Regulation
10V
9.21
9.34
1.4%
12V
9.21
9.21
1.4%
16V
9.21
9.34
1.4%
24V
9.21
9.34
1.4%
Iload
0A-2.4A
Vout=12V(With cord compensation)
VIN
Minimum
Output Voltage(V)
Maximum
Output Voltage(V)
Load Regulation
10V
9.61
10.05
4.5%
12V
11.56
11.91
3.0%
16V
12.19
12.32
1.1%
24V
12.19
12.32
1.1%
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Iload
0A-2.4A
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5.2. Efficiency (Ta=25℃)
VIN
Vout=5V Efficiency (%)
Io=100mA
Io=1000mA
Io=1500mA
Io=2000mA
Io=2400mA
10V
88.94
93.12
92.14
91.15
90.04
12V
86.30
92.11
91.46
90.43
89.55
16V
83.16
90.69
90.43
89.44
88.96
24V
75.49
88.72
88.70
88.44
87.73
VIN
Vout=9V Efficiency (%)
Io=100mA
Io=1000mA
Io=1500mA
Io=2000mA
Io=2400mA
10V
94.72
97.48
96.83
96.25
95.39
12V
93.70
96.68
96.15
95.43
94.91
16V
89.93
94.88
94.55
93.89
93.56
24V
89.23
92.80
92.89
92.68
92.39
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Vout=12V Efficiency (%)
VIN
Io=100mA
Io=1000mA
Io=1500mA
Io=2000mA
Io=2400mA
12V
97.94
98.31
97.73
97.11
96.66
16V
92.91
96.72
96.34
95.97
95.60
24V
90.74
94.33
94.52
94.30
93.90
5.3. Power Loss
Vin
Vout=5V Power loss (W)
Io=0mA
Io=100mA
Io=1000mA
Io=1500mA
Io=2000mA
Io=2400mA
Vin=10V
0.01
0.06
0.38
0.66
1.01
1.39
Vin=12V
0.01
0.08
0.44
0.72
1.1
1.46
Vin=16V
0.02
0.10
0.53
0.82
1.23
1.56
Vin=24V
0.02
0.17
0.65
0.99
1.36
1.75
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Vin
Vout=9V Power loss (W)
Io=0mA
Io=100mA
Io=1000mA
Io=1500mA
Io=2000mA
Io=2400mA
Vin=10V
0.05
0.05
0.24
0.46
0.73
1.08
Vin=12V
0.02
0.06
0.32
0.56
0.89
1.2
Vin=16V
0.03
0.10
0.50
0.80
1.21
1.54
Vin=24V
0.02
0.11
0.72
1.07
1.47
1.85
Vin
Vout=12V Power loss (W)
Io=0mA
Io=100mA
Io=1000mA
Io=1500mA
Io=2000mA
Io=2400mA
Vin=12V
0.04
0.03
0.20
0.41
0.69
0.96
Vin=16V
0.05
0.09
0.42
0.70
1.03
1.36
Vin=24V
0.05
0.12
0.74
1.07
1.49
1.92
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5.4. Constant Current and Constant Voltage (Ta=25℃)
Vout=5V
CC Load
CV Load
Active-Semi, Inc.
Vin=12V
Vout
Iout
(V)
(mA)
5.09
0
Vin=16V
Vout
Iout
(V)
(mA)
5.09
0
Vin=24V
Vout
Iout
(V)
(mA)
5.09
0
5.12
500
5.12
100
5.12
100
5.14
1000
5.14
1000
5.14
1000
5.17
2000
5.17
2000
5.17
2000
5.22
2400
5.22
2400
5.22
2400
4.95
2537
4.85
2536
4.85
2533
4.8
2537
4.75
2536
4.75
2533
4.5
2537
4.5
2536
4.5
2533
4
2537
4
2536
4
2533
3.5
2537
3.5
2537
3.5
2533
3
2538
3
2537
3
2533
2.8
2538
2.5
2537
2.5
2533
2.6
2212
2.4
2240
2.4
2340
2.5
0
2.5
0
2.5
0
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Vout=9V
CC Load
CV Load
Active-Semi, Inc.
Vin=12V
Vout
Iout
(V)
(mA)
9.21
0
Vin=16V
Vout
Iout
(V)
(mA)
9.21
0
Vin=24V
Vout
Iout
(V)
(mA)
9.21
0
9.24
500
9.24
500
9.24
500
9.27
1000
9.27
1000
9.27
1000
9.3
2000
9.3
2000
9.3
2000
9.34
2400
9.34
2400
9.34
2400
9
2542
9
2535
9
2529
8
2543
8
2535
8
2529
7
2543
7
2535
7
2529
6
2544
6
2535
6
2555
5
2544
5
2535
5
2548
4
2544
4
2547
4
2610
3
2543
3
2535
3
2525
2.5
0
2.5
0
2.5
0
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Vout=12V
CC Load
CV Load
Active-Semi, Inc.
Vin=12V
Vout
Iout
(V)
(mA)
12.19
0
Vin=16V
Vout
Iout
(V)
(mA)
12.19
0
Vin=24V
Vout
Iout
(V)
(mA)
12.19
0
12.22
500
12.22
500
12.22
500
12.24
1000
12.24
1000
12.24
1000
12.3
1500
12.3
1500
12.3
1500
12.32
2400
12.32
2400
12.32
2400
11
2538
11.5
2533
12
2530
10
2538
10
2533
10
2530
9
2539
9
2534
9
2530
8
2539
8
2534
8
2530
7
2540
7
2534
7
2545
6
2541
6
2535
6
2545
5
2540
5
2557
5
2540
4
2541
4
2625
4
2642
3
2540
3
2530
3
2521
2.5
0
2.5
0
2.5
0
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5.5. Standby Input Current
Vout=5V
Test
Conditions
Vin=10V
Input Current
(mA)
0.49
Power Loss at No Load
(mW)
4.9
Vin=12V
0.47
5.6
Vin=16V
0.48
7.7
Vin=24V
0.46
11
Test
Conditions
Vin=10V
Input Current
(mA)
0.74
Power Loss at No Load
(mW)
7.4
Vin=12V
0.55
6.6
Vin=16V
0.53
8.5
Vin=24V
0.53
12.7
Test
Conditions
Vin=12V
Input CurrenT
(mA)
0.9
Power Loss at No Load
(mW)
10.8
Vin=16V
0.58
9.3
Vin=24V
0.55
13.2
Vout=9V
Vout=12V
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5.6. Ripple and Noise
CH1:Vsw, CH2:Vout2
Vin=10V Vout=5V Iout=0A
Vin=10V Vout=5V Iout=1A
Vin=10V Vout=5V Iout=2.4A
Vin=24V Vout=5V Iout=0A
Vin=24V Vout=5V Iout=1A
Vin=24V Vout=5V Iout=2.4A
Vin=10V Vout=9V Iout=0A
Vin=10V Vout=9V Iout=1A
Vin=10V Vout=9V Iout=2.4A
Vin=24V Vout=9V Iout=0A
Vin=24V Vout=9V Iout=1A
Vin=24V Vout=9V Iout=2.4A
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Vin=12V Vout=12V Iout=0A
Vin=12V Vout=12V Iout=1A
Vin=24V Vout=12V Iout=0A
Vin=12V Vout=12V Iout=2.4A
Vin=24V Vout=12V Iout=1A
Vin=24V Vout=12V Iout=2.4A
Ripple & noise are measured by using 20MHz bandwidth limited oscilloscope
Test Conditions
Vout=5V
Vout=9V
Vout=12V
Output
Ripple(mV)
Iout=0A
Iout=1A
Iout=2.4A
Iout=0A
Iout=1A
Iout=2.4A
Iout=0A
Iout=1A
Iout=2.4A
Vin=10V
20
30
39
16
11
14
13
14
17
Vin=12V
25
34
46
15
21
27
11
15
18
Vin=16V
34
38
52
22
38
51
21
30
38
Vin=24V
36
43
59
44
54
73
46
60
80
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5.7. Load Dynamic Response
CH2:Vout ripple, CH4:Iout
Vout=5V
Vin=24V, load step 0A-0.5A-0A
Vin=24V, load step 0.5A-1A-0.5A
Vin=24V, load step 1A-1.5A-1A
Vin=24V, load step 1.5A-2.4A-1.5A
Vout=9V
Vin=24V, load step 0A-0.5A-0A
Vin=24V, load step 0.5A-1A-0.5A
Vin=24V, load step 1A-1.5A-1A
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Vin=24V, load step 1.5A-2.4A-1.5A
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Vout=12V
Vin=24V, load step 0A-0.5A -0A
Vin=24V, load step 0.5A-1A-0.5A
Vin=24V, load step 1A-1.5A-1A
Vin=24V, load step 1.5A-2.4A-1.5A
5.8. Output Voltage Transient
CH2:Vout,CH3:Vsw,CH4:IL
Active-Semi, Inc.
Vin=12V,Iout=0A,Vout 5V—>9V
Vin=12V,Iout=0A,Vout 9V—>5V
Vin=12V,Iout=0A,Vout 9V—>12V
Vin=12V,Iout=0A,Vout 12V—>5V
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Vin=12V,Iout=2.4A,Vout 5V—>9V
Vin=12V,Iout=0A,Vout 9V—>12V
Vin=12V,Iout=2.4A,Vout 9V—>5V
Vin=12V,Iout=0A,Vout 12V—>5V
5.9. Line Dynamic Response(Vin change from 12V to 40V, 0.1V/us)
CH1:Vin, CH2:Vout ripple , output 5V/2.4A
Vin=12V-40V
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Vin=40V-12V
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5.10. Key Components Temperature Test ( burning for 2 hours)
Vout=5V
Vin/Iout
Ambient
(℃)
PCB
(℃)
IC
(℃)
Schottky
(℃)
Inductor
(℃)
12V/2.4A
33
92
95
97
95
16V/2.4A
33
97
99
104
101
24V/2.4A
33
101
104
109
106
Vin/Iout
Ambient
(℃)
PCB
(℃)
IC
(℃)
Schottky
(℃)
Inductor
(℃)
12V/2A
33
74
75
73
72
16V/2A
33
84
85
88
83
24V/2A
33
92
93
96
91
Vin/Iout
Ambient
(℃)
PCB
(℃)
IC
(℃)
Schottky
(℃)
Inductor
(℃)
12V/2A
37
72
75
66
72
16V/2A
38
81
85
78
83
24V/2A
39
92
96
90
95
Vout=9V
Vout=12V
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6. EMI TEST
6.1. Output=5V
Vin=12V Output 5V2.4A Horizontal
Vin=12V Output 5V2.4A Vertical
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6.2. Output=9V
Vin=12V Output 9V2.4A Horizontal
Vin=12V Output 9V2.4A Vertical
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