ACT4529MYH-T0010 [ACTIVE-SEMI]
40V/3.0A CV/CC Buck Converter Featuring QC2.0, USB Auto-Detect and USB-PD;
| 型号： | ACT4529MYH-T0010 |
| 厂家： | 
ACTIVE-SEMI, INC |
| 描述： | 40V/3.0A CV/CC Buck Converter Featuring QC2.0, USB Auto-Detect and USB-PD 光电二极管 |
| 文件： | 总15页 (文件大小：2343K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ACT4529M
Rev 1, 23-Feb-17
40V/3.0A CV/CC Buck Converter Featuring QC2.0, USB Auto-Detect and USB-PD
GENERAL DESCRIPTION
FEATURES
ACT4529 is a wide input voltage, high efficiency
step-down DC/DC converter that operates in either
CV (Constant Output Voltage) mode or CC
(Constant Output Current) mode. This device has
QC2.0 built in to provide 5.1V/9.1V/12.1V outputs
as requested by attached portable devices. Besides
building in QC2.0 decoding, it also supports Apple,
Samsung and BC1.2 devices to charge at full
current rate. ACT4529 has an interface for USB-PD
control via a tri-state digital pin. Vout is 5.1V if this
pin is floating, Vout is 9.1V when this pin voltage is
less than 0.8V and Vout is 12.1V while this pin
voltage is more than 2.0V.
AEC-Q100 Automotive Qualified
-40°C~125°C Junction Temperature Range
Automotive Qualified
Passes SAE J1752 M8A EMC testing
Quick Charge™ 2.0 Certified by Qualcomm®
and UL.
UL Certificate No. 4787083099-1
http://www.qualcomm.com/documents/quickc
harge-device-list
40V Input Voltage Surge
4.5V-36V Operational Input Voltage
5.1V/9.1V/12.1V Output with +/-1% Accuracy
Up to 3.0A Output current
ACT4529 has accurate output current limits under
constant current regulation. It provides up to 3.0A
output current at 125kHz switching frequency.
ACT4529 utilizes adaptive drive technique to
achieve good EMI performance while main >90%
efficiency at full load for mini size CLA designs. It
also has output short circuit protection with hiccup
mode. The average output current is reduced to
below 6mA when output is shorted to ground. Other
features include output over voltage protection and
thermal shutdown.
Constant Current Regulation Limit
QC2.0 + Auto-Detect + USB-PD Type-C Support
Hiccup Mode Protection at Output Short
>90% Efficiency at Full Load
0.5mA Low Standby Input Current
5.7V/10.1V/13.5V Output Over-voltage
Protection for 5.1V/9.1V/12.1V Outputs
Cord Voltage Compensation
Meet EN55022 Class B Radiated EMI Standard
8kV ESD HBM Protection on DP and DM
SOP-8EP Package
This device is available in a SOP-8EP package and
requires very few external components for
operation.
APPLICATIONS
Automotive Applications
Car Charger
Cigarette Lighter Adaptor (CLA)
CV/CC regulation DC/DC converter
For details on SAE J1752 M8A EMC performance
and testing, refer to Active-Semi application note
AN-106, ACT4529M Automotive EMC Performance.
Typical Application Circuit
V/I Profile
* Patent Pending
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ACT4529M
Rev 1, 23-Feb-17
ORDERING INFORMATION
USB AUTO
DETECT
PART NUMBER
PDC
QC2.0
CERTIFICATION PACKAGE
ACT4529MYH-T0010
ACT4529MYH-T1011
Yes
Yes
No
Yes
Yes
QC 2.0
N/A
SOP-8EP
SOP-8EP
Yes
PIN CONFIGURATION
Top View
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Copyright © 2016-2017 Active-Semi, Inc.
ACT4529M
Rev 1, 23-Feb-17
PIN DESCRIPTIONS
PIN
NAME
DESCRIPTION
Voltage Feedback Input. Connect to node of the inductor and output capacitor. CSP
and CSN Kevin sense is recommended.
1
CSP
Negative input terminal of output current sense. Connect to the negative terminal of
current sense resistor.
2
3
CSN
PDC
USB-PD Control Pin. floating: 5.1V, pulled high: 12.1V, pulled low: 9.1V. Do not
drive this pin higher than 5V.
Data Line Positive Input. Connected to D+ of attached portable device data line.
This pin passes 8kV HBM ESD.
4
5
DP
Data Line Negative Input. Connected to D- of attached portable device data line.
This pin passes 8kV HBM ESD.
DM
Power Supply Input. Bypass this pin with a 10μF ceramic capacitor to GND, placed
as close to the IC as possible.
6
7
8
IN
SW
HSB
Power Switching Output to External Inductor.
High Side Bias Pin. This provides power to the internal high-side MOSFET gate
driver. Connect a 22nF capacitor from HSB pin to SW pin.
Ground and Heat Dissipation Pad. Connect this exposed pad to large ground
copper area with copper and vias.
9
GND
ABSOLUTE MAXIMUM RATINGS
PARAMETER
IN to GND
VALUE
-0.3 to 40
-1 to VIN +1
SW - 0.3 to VSW + 7
-0.3 to +15
-0.3 to +6
-0.3 to +6
46
UNIT
V
SW to GND
V
HSB to GND
V
V
CSP, CSN to GND
V
PDC to GND
V
All other pins to GND
V
Junction to Ambient Thermal Resistance
Operating Junction Temperature
Storage Junction Temperature
Lead Temperature (Soldering 10 sec.)
°C/W
°C
°C
°C
-40 to 150
-55 to 150
300
: Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may
affect device reliability.
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Copyright © 2016-2017 Active-Semi, Inc.
ACT4529M
Rev 1, 23-Feb-17
ELECTRICAL CHARACTERISTICS
(VIN = 12V, TJ = -40°C~125°C, , unless otherwise specified.)
Parameter
Symbol
Condition
Min
Typ
Max Units
Input Over Voltage Protection
Input Over Voltage Hysteresis
Input Over Voltage Response Time
Input Under Voltage Lockout (UVLO)
Input UVLO Hysteresis
VIN_OVP
Rising
40
42
4
44
V
V
T_VIN_OVP VIN step from 30V to 45V
250
4.5
200
ns
V
VIN
Rising
4.15
4.75
mV
Input Voltage Power Good Deglitch
Time
No OVP
40
ms
Input Voltage Power Good Deglitch
Time
No UVP
10
us
Input Standby Current
Vin=12V, Vout=5.1V, Iload=0
500
uA
4.92
8.78
5.1
9.1
5.28
9.42
Output Voltage Regulation
CSP
CSP
At Full Temperature
At Room Temperature
Output rising
V
V
V
11.67 12.1
12.53
5.05
9.0
5.1
9.1
5.15
9.2
Output Voltage Regulation
11.95 12.1
12.25
5.5
9.7
5.7
6.0
Output Over Voltage Protection
(OVP)
10.1
13.5
10.5
14.0
13.0
Falling Threshold
Hysteresis
7.5
8.0
8.5
V
VIN Drop
Threshold
200
mV
ms
ms
us
Input Brownout Protection
(ACT4529MYH-T1011 only)
Vout Drop Delay Time
416
416
480
480
QC and PDC Restart time
Output Over Voltage Deglitch Time
Output Voltage Cord Compensation
1.0
ACT
4529MYH-
T0010
-25%
200
+25%
mV
66mV between CSP and CSN
ACT
4529MYH-
T1011
-25%
-10%
200
3.2
+25%
10%
mV
V
Output Under Voltage Protection
(UVP)
VOUT
VOUT falling
VOUT rising
UVP Hysteresis
VOUT
VOUT
0.55
10
V
UVP Deglitch Time
us
ms
UVP Blanking Time at Startup
3.5
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Copyright © 2016-2017 Active-Semi, Inc.
ACT4529M
Rev 1, 23-Feb-17
ELECTRICAL CHARACTERISTICS
(VIN = 12V, TJ = -40°C~125°C, unless otherwise specified.)
Unit
s
Parameter
Symbol
Condition
Min
Typ
Max
Output Constant Current Limit
Hiccup Waiting Time
Rcs=20mΩ
2.95
3.3
3.63
A
4.13
S
A
Top FET Cycle by Cycle Current
Limit
4.5
5.8
Top FET Rds on
70
mΩ
Ω
Bot FET Rds on
4.7
Maximum Duty Cycle
Switching Frequency
Soft-start Time
99
%
-10%
125
2.0
80
+10%
kHz
ms
mV
Out Voltage Ripples
Cout=220uF/22uF ceramic
For high to lower voltage transi-
tions
VOUT Discharge Current
60
mA
ms
ms
Voltage transition time for QC 2.0
transition or USB PD Type C
12V-5V
5V-12V
100
100
Voltage transition time for QC 2.0
transition or USB PD Type C
Input 12V-40V-12V with 1V/us
slew rate, Vout=5V, Iload=0A
and 2.4A
Line Transient Response
4.75
4.9
5.25
5.4
V
V
80mA-1.0A-80mA load with
0.1A/us slew rate
Vout=5V
5.15
80mA-1.0A-80mA load with
0.1A/us slew rate
Load Transient Response
Vout=9V
8.7
9.1
9.5
V
V
80mA-1.0A-80mA load with
0.1A/us slew rate
Vout=12V
11.6
12.1
12.6
Thermal Shut Down
Thermal Shut Down Hysteresis
ESD of DP, DM
160
30
8
°C
°C
kV
V
HBM
PDC High Threshold
PDC Low Threshold
PDC Drive Current
2.2
0.6
V
10
uA
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ACT4529M
Rev 1, 23-Feb-17
FUNCTIONAL BLOCK DIAGRAM
FUNCTIONAL DESCRIPTION
Output Current Sensing and Regulation
Output Under-Voltage Protection /
Hiccup Mode
Sense resistor is connected to CSP and CSN. The
sensed differential voltage is compared with interval
reference to regulate current. CC loop and CV loop
are in parallel. The current loop response is allowed
to have slower response compared to voltage loop.
However, during current transient response, the
inductor current overshoot/undershoot should be
controlled within +/-25% to avoid inductor
saturation.
There is
a
under voltage protection (UVP)
threshold. If the UVP threshold is hit for 10us, an
over current or short circuit is assumed, and the
converter goes into hiccup mode by disabling the
converter and restarts after hiccup waiting period.
Input Brownout Protection
(ACT4529MYH-T1011 only)
Cycle-by-Cycle Current Control
If the input voltage drops below 8V but higher than
UVLO for 450ms while in QC or PDC mode, the
output voltage turns off and QC or PDC mode is
disabled. If the output voltage drops below 3.7V, the
timer restarts and waits for 450ms before
attempting to restart the output voltage. When
output voltage rises above 3.9V and detects the
input voltage below 8V, timer restarts. If the input
voltage is below 8V after 450ms, the output turns
off. The cycle continues until the input voltage
increases above 8.2V,for longer than 450ms, then
output turns on, the IC renegotiates the PD and QC
protocols, and normal operation restarts.
The conventional cycle-by-cycle peak current mode
is implemented with high-side FET current sense.
Input Over Voltage Protection
The converter is disabled if the input voltage is
above 42V (+/-2V). Device resumes operation
automatically 40ms after OVP is cleared.
Output Over Voltage Protection
Device stops switching when output over-voltage is
sensed, and resumes operation automatically when
output voltage drops to OVP- hysteresis.
Thermal Shutdown
Output Over Voltage Discharge
If the TJ increases beyond 160°C, ACT4529 goes
into HZ mode and the timer is preserved until TJ
drops by 30°C.
Discharge circuit starts to discharge output through
CSP pins when output over voltage is detected.
Discharge circuit brings 12V down to 5V in less
than 100ms.
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ACT4529M
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FUNCTIONAL DESCRIPTION
Cord Compensation
Cord Compensation increases the output voltage
with increased output current to compensate for the
voltage drop across the output connector and output
cable.
The compensation voltage is derived as:
ΔVout = RCS*Iout*K
Where RCS is the current sense resistance, Iout is the
load current, and K = 3.03
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ACT4529M
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APPLICATIONS INFORMATION
may also be used provided that the RMS ripple
current rating is higher than 50% of the output
current. The input capacitor should be placed close
to the IN and GND pins of the IC, with the shortest
traces possible. In the case of tantalum or
Inductor Selection
The inductor maintains a continuous current to the
output load. This inductor current has a ripple that is
dependent on the inductance value.
Higher inductance reduces the peak-to-peak ripple
current. The trade off for high inductance value is
the increase in inductor core size and series
resistance, and the reduction in current handling
capability. In general, select an inductance value L
based on ripple current requirement:
electrolytic types,
a
ceramic capacitor is
recommended to parallel with tantalum or
electrolytic capacitor, which should be placed right
next to the IC.
Output Capacitor
The output capacitor also needs to have low ESR to
keep low output voltage ripple. The output ripple
voltage is:
(1)
(5)
Where VIN is the input voltage, VOUT is the output
voltage, fSW is the switching frequency, ILOADMAX is
the maximum load current, and KRIPPLE is the ripple
Where IOUTMAX is the maximum output current,
KRIPPLE is the ripple factor, RESR is the ESR of the
output capacitor, fSW is the switching frequency, L is
the inductor value, and COUT is the output
capacitance. From the equation above, VRIPPLE is
the combination of ESR and real capacitance.
In the case of ceramic output capacitors, RESR is very
small and does not contribute to the ripple.
Therefore, a lower capacitance value can be used
for ceramic type. In the case of tantalum or
electrolytic capacitors, the ripple is dominated by
factor. Typically, choose KRIPPLE
=
30% to
correspond to the peak-to-peak ripple current being
30% of the maximum load current.
With a selected inductor value the peak-to-peak
inductor current is estimated as:
(2)
R
ESR multiplied by the ripple current. In that case, the
output capacitor is chosen to have sufficiently low
ESR.
Tt is estimated as:
For ceramic output capacitor, typically choose a
capacitance of about 22µF. For tantalum or
electrolytic capacitors, choose a capacitor with less
than 50mΩ ESR. When 330uF or 470uF electrolytic
cap or tantalum cap is used, where ripple is
dominantly caused by ESR, a 2.2uF ceramic in
parallel is recommended.
(3)
The selected inductor should not saturate at ILPK.
The maximum output current is calculated as:
Rectifier Schottky Diode
(4)
Use a Schottky diode as the rectifier to conduct
current when the High-Side Power Switch is off.
The Schottky diode must have current rating higher
than the maximum output current and a reverse
voltage rating higher than the maximum input
voltage. Further more, the low forward voltage
Schottky is preferable for high efficiency and
smoothly operation.
LLIM is the internal current limit.
Input Capacitor
The input capacitor needs to be carefully selected
to maintain sufficiently low ripple at the supply input
of the converter. A low ESR capacitor is highly
recommended. Since large current flows in and out
of this capacitor during switching, its ESR also
affects efficiency.
The input capacitance needs to be higher than
10µF. The best choice is the ceramic type.
However, low ESR tantalum or electrolytic types
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ACT4529M
Rev 1, 23-Feb-17
APPLICATIONS INFORMATION
Current Sense Resistors
The traces leading to and from the sense resistor
can be significant error sources. With small value
sense resistors, trace resistance shared with the
load can cause significant errors. It is recommended
to connect the sense resistor pads directly to the
CSP and CSN pins using “Kelvin” or “4-wire”
connection techniques as shown below.
he IC
-cycle
p the
k
(6)
Where Rcs is current sense resistor.
The maximum output current is defined by
(7)
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ACT4529M
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APPLICATIONS INFORMATION
4) Schottky anode pad and IC exposed pad
should be placed close to ground clips in CLA
applications
PCB Layout Guidance
When laying out the printed circuit board, the
following checklist should be used to ensure proper
operation of the IC.
5) Use “Kelvin” or “4-wire” connection techniques
from the sense resistor pads directly to the CSP
and CSN pins. The CSP and CSN traces
should be in parallel to avoid interference.
1) Arrange the power components to reduce the
AC loop size consisting of CIN, IN pin, SW pin,
the Schottky diode, and GND
6) Place multiple vias between top and bottom
GND planes for best heat dissipation and noise
immunity.
2) Place input decoupling ceramic capacitor CIN as
close to VIN pin as possible. The GND side of
CIN must be placed as close as possible to to
power GND on the top layer. The traces should
be short and wide.
7) Use short traces connecting HSB-CHSB-SW
loop.
8) SW node is noisy, switching from VIN to GND.
Its size should be minimized and it should be
isolated away from the rest of circuit for good
EMI and low noise operation.
3) The high power loss components, e.g. the
controller, Schottky diode, and the inductor
should be placed carefully to make the thermal
spread evenly on the board.
Example PCB Layout
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ACT4529M
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Typical Application Circuit
BOM List for 2.4A Car Charger
ITEM REFERENCE
DESCRIPTION
IC, ACT4529, SOP-8EP
MANUFACTURER
Active-Semi
QTY
1
1
2
U1
C1
C2
C3
C4
C5
C6
L1
Capacitor, Electrolytic, 47µF/35V
Murata, TDK
Murata, TDK
Murata, TDK
Murata, TDK
Murata, TDK
Murata, TDK
1
3
Capacitor, Ceramic, 10µF/25V, 1206, SMD
Capacitor, Ceramic, 22nF/25V, 0603, SMD
Capacitor, Ceramic, 22µF/16V, 1206, SMD
Capacitor, Electrolytic, 220µF/16V
Capacitor, Ceramic, 2.2µF/16V, 0805, SMD
Inductor, 40µH, 4A, 20%
1
4
1
5
1
6
1
7
1
8
1
9
D1
Rcs
Diode, Schottky, 40V/5A, SK54L
Panjit
1
10
Chip Resistor, 20mΩ, 1206, 1%
Murata, TDK
1
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ACT4529M
Rev 1, 23-Feb-17
TYPICAL PERFORMANCE CHARACTERISTICS
(Schematic as show in typical application circuit, Ta = 25°C, unless otherwise specified)
Efficiency vs. Load current ( 5V Vout)
Efficiency vs. Load current ( 9V Vout)
100
95
100
95
VIN =12V
90
90
VIN =12V
VIN =24V
85
80
75
85
80
75
VIN =24V
70
70
65
60
65
60
0
500
1000
1500
2000
2500
3000
0
500
1000
1500
2000
2500
3000
Load Current (mA)
Load Current (mA)
Output CC/CV Curve (5V Vout)
Efficiency vs. Load current ( 12V Vout)
6.0
5.0
4.0
3.0
2.0
100
95
90
VIN =12V
VIN =24V
VIN =12V
VIN =24V
85
80
75
70
1.0
0
65
60
0
500
1000
1500
2000
2500
3000
0
5000
1000
1500
2000
2500
3000
3500
Load Current (mA)
Output Current (mA)
Output CC/CV Curve (12V Vout)
Output CC/CV Curve (9V Vout)
10.0
8.0
14.0
12.0
10.0
8.0
VIN =24V
VIN =12V
VIN =12V
6.0
VIN =24V
6.0
4.0
4.0
2.0
0
2.0
0
0
5000
1000
1500
2000
2500
3000
3500
0
5000
1000
1500
2000
2500
3000
3500
Output Current (mA)
Output Current (mA)
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ACT4529M
Rev 1, 23-Feb-17
TYPICAL PERFORMANCE CHARACTERISTICS
(Schematic as show in typical application circuit, Ta = 25°C, unless otherwise specified)
Output Over Voltage (5V Vout)
Start up into CC Mode
CH1
CH1
CH2
CH2
CH3
CH1: VIN, 10V/div
CH1: VOUT, 1V/div
CH2: SW, 10V/div
TIME: 1ms/div
CH2: VOUT, 2V/div
CH3: IOUT, 2A/div
TIME: 400µs/div
Load Transient (80mA-1A-80mA)
Vin=12V, Vout=5V
Load Transient (1A-2.4A-1A)
Vin=12V, Vout=5V
CH1
CH2
CH1
CH2
CH1: VOUT, 100mV/div
CH2: IOUT, 1A/div
TIME: 400us//div
CH1: VOUT, 200mV/div
CH2: IOUT, 1A/div
TIME: 400us//div
Load Transient (80mA-1A-80mA)
Vin=12.6V, Vout=12V
Load Transient (1A-2.4A-1A)
Vin=12.6V, Vout=12V
CH1
CH2
CH1
CH2
CH1: VOUT, 200mV/div
CH2: IOUT, 1A/div
TIME: 400us//div
CH1: VOUT, 200mV/div
CH2: IOUT, 1A/div
TIME: 400us//div
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ACT4529M
Rev 1, 23-Feb-17
TYPICAL PERFORMANCE CHARACTERISTICS
(Schematic as show in typical application circuit, Ta = 25°C, unless otherwise specified)
Voltage Transient (5V-9V)
Voltage Transient (9V-5V)
CH1
CH1
CH1: VOUT, 2V/div
TIME: 10ms//div
CH1: VOUT, 2V/div
TIME: 10ms//div
Voltage Transient (5V-12V)
Voltage Transient (12V-5V)
CH1
CH1
CH1: VOUT, 2V/div
TIME: 10ms//div
CH1: VOUT, 2V/div
TIME: 10ms//div
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ACT4529M
Rev 1, 23-Feb-17
PACKAGE OUTLINE
SOP-8EP PACKAGE OUTLINE AND DIMENSIONS
DIMENSION IN
MILLIMETERS
DIMENSION IN
INCHES
SYMBOL
MIN
MAX
1.727
0.152
1.550
0.510
0.250
5.100
3.402
4.000
6.200
2.513
MIN
MAX
A
A1
A2
b
1.350
0.000
1.245
0.330
0.170
4.700
3.202
3.734
5.800
2.313
0.053 0.068
0.000 0.006
0.049 0.061
0.013 0.020
0.007 0.010
0.185 0.200
0.126 0.134
0.147 0.157
0.228 0.244
0.091 0.099
0.050 TYP
c
D
D1
E
E1
E2
e
1.270 TYP
0.400
0°
1.270
8°
0.016 0.050
L
0°
8°
θ
Active-Semi, Inc. reserves the right to modify the circuitry or specifications without notice. Users should evaluate each
product to make sure that it is suitable for their applications. Active-Semi products are not intended or authorized for use
as critical components in life-support devices or systems. Active-Semi, Inc. does not assume any liability arising out of
the use of any product or circuit described in this datasheet, nor does it convey any patent license.
Active-Semi and its logo are trademarks of Active-Semi, Inc. For more information on this and other products, contact
sales@active-semi.com or visit http://www.active-semi.com.
is a registered trademark of Active-Semi.
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相关型号：
ACT4529MYH-T1011
40V/3.0A CV/CC Buck Converter Featuring QC2.0, USB Auto-Detect and USB-PD
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ACT4529YH-T0001
40V/3.0A CV/CC Buck Converter Featuring QC2.0, USB Auto-Detect and USB-PD
ACTIVE-SEMI
ACT4529YH-T0010
40V/3.0A CV/CC Buck Converter Featuring QC2.0, USB Auto-Detect and USB-PD
ACTIVE-SEMI
ACT4529YH-T0011
40V/3.0A CV/CC Buck Converter Featuring QC2.0, USB Auto-Detect and USB-PD
ACTIVE-SEMI
ACT4529YH-T1011
40V/3.0A CV/CC Buck Converter Featuring QC2.0, USB Auto-Detect and USB-PD
ACTIVE-SEMI
ACT4530MYH-T0010
40V/3.0A CV/CC Buck Converter Featuring QC2.0, USB Auto-Detect and USB-PD
ACTIVE-SEMI
ACT4530YH-T0010
40V/3.0A CV/CC Buck Converter Featuring QC2.0, USB Auto-Detect and USB-PD
ACTIVE-SEMI
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