ACT4530MYH-T0010 [ACTIVE-SEMI]
40V/3.0A CV/CC Buck Converter Featuring QC2.0, USB Auto-Detect and USB-PD;
| 型号： | ACT4530MYH-T0010 |
| 厂家： | 
ACTIVE-SEMI, INC |
| 描述： | 40V/3.0A CV/CC Buck Converter Featuring QC2.0, USB Auto-Detect and USB-PD 开关 光电二极管 |
| 文件： | 总14页 (文件大小：1651K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ACT4530M
Rev 1.0, 04-Jan-2019
40V/3.0A CV/CC Buck Converter Featuring QC2.0, USB Auto-Detect and USB-PD
GENERAL DESCRIPTION
FEATURES
ACT4530M 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. It is an
improvement over the ACT4529 with its QC2.0
compatibility in 12V automotive applications. The
ACT4530M eliminates the issue with QC2.0 buck
converters that try to operate with Vin = 12V to Vout
= 12V. In addition to QC2.0, it also supports Apple,
Samsung and BC1.2 protocols. ACT4530M also
has an optional input pin, PDC, that accepts a tri-
state input for USB-PD control. The ACT4530M
AEC-Q100 Automotive Qualified
-40°C~125°C Junction Temperature Range
12V Input Optimized (Automotive Applications)
QC2.0 Decoding + USB Auto-Detect + USB-PD
Type-C Support
Apple MFi and 2.4A compatible
Samsung and BC1.2 compatible
40V Input Voltage Surge
4.5V-36V Operational Input Voltage
5.1V/9.1V Output with +/-1% Accuracy
Up to 3.0A Output current
also
filters
out
non-QC2.0
compatible
communication pulses generated by some phones’
communication protocols.
Constant Current Regulation Limit
Hiccup Mode Protection at Output Short
>90% Efficiency at Full Load
ACT4530M has accurate output current limits under
constant current regulation to meet MFi
specification. It provides up to 3.0A output current
at 125kHz switching frequency. ACT4530M 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.
0.5mA Low Standby Input Current
5.7V/10.1V Output Over-voltage Protection for
5.1V/9.1V Outputs
Cord Voltage Compensation
Meet EN55022 Class B Radiated EMI Standard
8kV ESD HBM Protection on DP and DM
SOP-8EP Package
APPLICATIONS
Car Charger
Cigarette Lighter Adaptor (CLA)
Rechargeable Portable Device
CV/CC regulation DC/DC converter
This device is available in a SOP-8EP package and
requires very few external components for
operation.
Typical Application Circuit
V/I Profile
* Patent Pending
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Copyright © 2019 Active-Semi, Inc.
ACT4530M
Rev 1.0, 04-Jan-2019
ORDERING INFORMATION
USB AUTO
DETECT
PART NUMBER
PDC
QC2.0
CERTIFICATION PACKAGE
ACT4530MYH-T0010
Yes
No
Yes
n/a
SOP-8EP
PIN CONFIGURATION
Top View
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Copyright © 2019 Active-Semi, Inc.
ACT4530M
Rev 1.0, 04-Jan-2019
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. When PDC is floating, Vout = 5.1V. When PDC is pulled low,
Vout = 9.1V. When PDC is pulled high, the IC ignores the PDC pin and the output
voltage does not change from the previous setting.
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 © 2019 Active-Semi, Inc.
ACT4530M
Rev 1.0, 04-Jan-2019
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
VIN_OVP
Rising
40
42
4
44
V
V
Input Over Voltage Response Time
Input Under Voltage Lockout (UVLO)
Input UVLO Hysteresis
T_VIN_OVP VIN step from 30V to 45V
250
4.5
ns
V
VIN
Rising
200
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
5.1V setting
9.1V setting
5.05
9.0
5.1
9.1
5.15
9.2
Output Voltage Regulation
CSP
V
V
Output rising, 5.1V setting
Output rising, 9.1V setting
5.7
Output Over Voltage Protection
(OVP)
10.1
Output Over Voltage Deglitch Time
Output Voltage Cord Compensation
1.0
us
ACT4530MYH-T0010 -
66mV between CSP and CSN
-15%
-10%
200
+15%
10%
mV
Output Under Voltage Protection
(UVP)
VOUT
VOUT falling
VOUT rising
3.2
V
UVP Hysteresis
VOUT
VOUT
0.2
10
V
UVP Deglitch Time
us
ms
UVP Blanking Time at Startup
3.5
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Copyright © 2019 Active-Semi, Inc.
ACT4530M
Rev 1.0, 04-Jan-2019
ELECTRICAL CHARACTERISTICS
(VIN = 12V, TJ = -40°C~125°C, unless otherwise specified.)
Parameter
Output Constant Current Limit
Hiccup Waiting Time
Symbol
Condition
Min
Typ
3.3
Max Units
Rcs=20mΩ
3.1
3.5
A
S
4.13
Top FET Cycle by Cycle Current
Limit
4.5
5.8
A
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
9V-5V
5V-9V
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
Load Transient Response
4.75
5.25
V
80mA-1.0A-80mA load with
0.1A/us slew rate
4.9
8.7
5.15
9.1
5.4
9.5
V
V
80mA-1.0A-80mA load with
0.1A/us slew rate
Thermal Shut Down
Thermal Shut Down Hysteresis
ESD of DP, DM
160
30
8
°C
°C
kV
V
HBM
PDC Floating
1.5
PDC High
2.0
V
PDC Low
0.8
5.5
V
PDC Maximum Voltage
PDC Drive Current
V
10
uA
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Copyright © 2019 Active-Semi, Inc.
ACT4530M
Rev 1.0, 04-Jan-2019
FUNCTIONAL BLOCK DIAGRAM
FUNCTIONAL DESCRIPTION
The ACT4530M is wide input range (40V) buck
converter that is optimized for CLA (cigarette lighter
adapter) car charger applications. It operates at
125kHz for automotive EMI compatibility. It supports
all major communication protocols including Q2.0,
USB PD, Apple, Samsung, and BC1.2. It requires
very few external components, resulting in small
solution sizes.
When PDC is pulled high or low, the PDC input
takes priority over any DP and DM communication.
DP and DM communication requests are only
accepted when PDC is floating.
Output Current Sensing and Regulation
The output current sense resistor is connected
between CSP and CSN. The sensed differential
voltage is compared with an internal reference
voltage to regulate the maximum output current. CC
loop and CV loop are in parallel. The current loop
response has a slower response compared to
voltage loop. During load current transients, the
inductor current can be up to +/-25% higher than
steady state condition. The customer should
confirm that the inductor does not saturate during
these peak conditions.
Improved QC2.0 Functionality (DP and
DM communication)
The ACT4530M implements an improved QC2.0
functionality. It overcomes the typical issues seen
with 12V automotive QC2.0 applications that
request a 12V output. A typical buck converter
cannot deliver a 12V output voltage from a 12V
input voltage. The typical buck converter goes to
maximum duty cycle and is unable to accurately
regulate the output voltage or current. The
ACT4530M resolves this issue by accepting all
QC2.0 voltage requests, but it only responds to 5V
and 9V requests. Any 12V request is ignored, and
the output voltage does not change.
Cycle-by-Cycle Current Control
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.
PDC Pin
The PDC pin is an optional input that allows
external controllers to program the ACT4530M
output voltage. This pin is typically used in USB PD
applications. Opening PDC (floating input)
programs Vout to 5.1V. Pulling PDC low programs
Vout to 9.1V. Pulling PDC high does not change the
previously programmed output voltage. Starting the
IC with PDC already pulled high results in Vout
starting at 5V.
Output Over Voltage Protection
Device stops switching when output over-voltage is
sensed, and resumes operation automatically when
output voltage drops to OVP- hysteresis.
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Copyright © 2019 Active-Semi, Inc.
ACT4530M
Rev 1.0, 04-Jan-2019
FUNCTIONAL DESCRIPTION
Output Over Voltage Discharge
Discharge circuit starts to discharge output through
CSP pins when output over voltage is detected.
Discharge circuit brings 9V down to 5V in less than
100ms.
Output Under-Voltage Protection /
Hiccup Mode
The ACT4530M implements an under voltage
protection (UVP) threshold to protect against fault
conditions. If the output voltage is below UVP
threshold for more than 10us, an over current or
short circuit is assumed, and the converter goes into
hiccup mode by disabling the converter and
restarting after hiccup waiting period of 4.3s.
Thermal Shutdown
If the junction temperature, TJ, increases beyond
160°C, the ACT4530M shuts down until TJ drops
below 130°C.
Cord Compensation
The ACT4530M implements cord compensation to
account for voltage drops due to output cable
resistance. It accomplishes this by increasing the
output voltage with increasing output current. The
increased output voltage is measured at the CSP
pin.
The cord compensation voltage is derived as:
ΔVout = (VCSP-VCSN)*K
Where K=3.03
The cord compensation loop is very slow to avoid
disturbing to the voltage loop when there are load
transients.
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Copyright © 2019 Active-Semi, Inc.
ACT4530M
Rev 1.0, 04-Jan-2019
APPLICATIONS INFORMATION
capacitor in parallel with a tantalum or electrolytic.
This combination provides the EMI and noise
performance. The input capacitor must be placed
close to the IN and GND pins of the IC, with the
shortest traces possible. If using a tantalum or
electrolytic capacitor in parallel with ceramic
capacitor, the ceramic capacitor must be placed
closer to the IC.
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:
Output Capacitor
The ACT4530M output capacitance must be split
between the left and right side of the output current
sense resistor. The left side of the current sense
resistor (CSP pin) requires a 22uF ceramic
capacitor. The right side of the current sense
resistor should contain enough capacitance to keep
the output voltage ripple below the require level.
(1)
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
factor. Typically, choose KRIPPLE
correspond to the peak-to-peak ripple current being
30% of the maximum load current.
=
30% to
(5)
This output capacitance should have low ESR to
keep low output voltage ripple. The output ripple
voltage is:
With a selected inductor value the peak-to-peak
inductor current is estimated as:
(2)
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.
Tnt is estimated as:
(3)
(4)
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. In
the case of tantalum or electrolytic capacitors, the
ripple is dominated by RESR. In this case, the output
capacitor must chosen to have sufficiently low ESR.
The selected inductor should not saturate at ILPK.
The maximum output current is calculated as:
For ceramic output capacitors, typically choose a
capacitance of about 22µF. For tantalum or
electrolytic capacitors, choose a capacitor with less
than 50mΩ ESR. If an 330uF or 470uF electrolytic
cap or tantalum cap is used and the output voltage
ripple is dominated by ESR, add a 2.2uF ceramic in
parallel with the tantalum or electrolytic.
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 currents flow in and out
of this capacitor during switching, its ESR also
affects efficiency.
Rectifier Schottky Diode
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.
The input capacitance needs to be higher than
10µF. The best choice is a ceramic capacitor.
However, low ESR tantalum or electrolytic types
may also be used provided that the RMS ripple
current rating is higher than 50% of the output
current. Active Semi recommends using a ceramic
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Copyright © 2019 Active-Semi, Inc.
ACT4530M
Rev 1.0, 04-Jan-2019
APPLICATIONS INFORMATION
Current Sense Resistor
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.
oltage
nstant
(6)
Where Rcs is current sense resistor.
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Copyright © 2019 Active-Semi, Inc.
ACT4530M
Rev 1.0, 04-Jan-2019
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, VIN pin, SW pin
and the Schottky diode.
6) Place multiple vias between top and bottom
GND planes for best heat dissipation and noise
immunity.
2) 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.
7) Use short traces connecting HSB-CHSB-SW
loop.
3) Place input decoupling ceramic capacitor CIN as
close as possible to the VIN pin and power pad.
CIN must be connected to power GND with a
short and wide copper trace.
8) SW pad is noise node switching from VIN to
GND. It should be isolated away from the rest
of circuit for good EMI and low noise operation.
Example PCB Layout
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Copyright © 2019 Active-Semi, Inc.
ACT4530M
Rev 1.0, 04-Jan-2019
Typical Application Circuit
BOM List for 2.4A Car Charger
ITEM REFERENCE
DESCRIPTION
IC, ACT4530M, 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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ACT4530M
Rev 1.0, 04-Jan-2019
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 (9V Vout)
Output CC/CV Curve (5V Vout)
6.0
10.0
8.0
5.0
4.0
3.0
2.0
VIN =12V
VIN =24V
VIN =12V
6.0
VIN =24V
4.0
2.0
0
1.0
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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Copyright © 2019 Active-Semi, Inc.
ACT4530M
Rev 1.0, 04-Jan-2019
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
VOUT = 5.1V
RLORD = 1.5Ω
CH1: VOUT, 1V/div
CH2: SW, 10V/div
TIME: 1ms/div
CH2: VOUT, 2V/div
CH3: IOUT, 2A/div
TIME: 400µs/div
I
OUT = 2.65A
VIN = 12V
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
Voltage Transient (5V-9V)
Voltage Transient (9V-5V)
CH1
CH1
CH1: VOUT, 2V/div
TIME: 10ms//div
CH1: VOUT, 2V/div
TIME: 10ms//div
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Copyright © 2019 Active-Semi, Inc.
ACT4530M
Rev 1.0, 04-Jan-2019
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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Copyright © 2019 Active-Semi, Inc.
相关型号：
ACT4530YH-T0010
40V/3.0A CV/CC Buck Converter Featuring QC2.0, USB Auto-Detect and USB-PD
ACTIVE-SEMI
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