AOZ5019
High-Current, High-Performance
DrMOS Power Module
General Description
The AOZ5019 is a high efficiency synchronous buck
power stage module consisting of two asymmetrical
MOSFETs and an integrated driver. The MOSFETs are
individually optimized for operation in the synchronous
buck configuration. The high side MOSFET has low
capacitance and gate charge for fast switching with low
duty cycle operation. The low side MOSFET has ultra low
R
DS(ON)
to minimize conduction losses.
The AOZ5019 is intended for use with TTL and tri-state
compatible, which allows both power MOSFETs to be
turned off.
A number of features are provided making the AOZ5019
a highly versatile power module. The boot supply diode is
integrated in the driver. The low side MOSFET can be
driven into diode emulation mode to provide
asynchronous operation when required. The pin-out is
optimized for low inductance routing of the converter
keeping the parasitics and their effects to the minimum.
Features
4.5 V to 25 V input voltage range
4.5 V to 5.5 V driver supply range
Up to 30 A output current
Up to 1.5 MHz PWM operation
Tri-state PWM input
Undervoltage protection
Integrated boot supply diode
Diode Emulation mode of operation
Small 5x3.5 QFN-23L package
Applications
Servers
Notebook computers
VRMs for motherboards
Point of load DC/DC converters
Memory and graphic cards
Video gaming consoles
NOT RECOMMENDED FOR NEW DESIGNS
Typical Application Circuit
AOZ5019
+5V
VCC
VIN
BOOT
VIN
5V to 25V
Cboot
PWM
SMOD
EN
PWM
Controller
Drive Logic
and
Dead Time
Control
Lout
VSWH
VOUT
Cin
CGND
PGND
Cout
CGND
PGND
Rev. 3.0 May 2018
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Page 1 of 13
AOZ5019
Ordering Information
Part Number
AOZ5019QI
Ambient Temperature Range
-40 °C to +85 °C
Package
5x3.5 QFN-23L
Environmental
Green Product
AOS Green Products use reduced levels of Halogens, and are also RoHS compliant.
Please visit
www.aosmd.com/media/AOSGreenPolicy.pdf
for additional information
.
Pin Configuration
CGND
PGND
PGND
PWM
VIN
EN
GL
1
SMOD
VCC
BOOT
GH
VSWH
VSWH
VIN
PGND
VSWH
VSWH
VSWH
PGND
PGND
PGND
5x3.5 QFN-23
(Top View)
Rev. 3.0 May 2018
PGND
VIN
VIN
VIN
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AOZ5019
Pin Description
Pin Number
1
2
3
4
5
Pin Name
SMOD
VCC
BOOT
GH
VSWH
Pin Function
Skip Mode input. When the pin is held active low, Diode Emulation or Skip Mode is enabled for
the LS FET.
Control and Driver supply input. Nominal 5 V.
Gate drive supply for the HS FET. Nominal 5 V. The bootstrap diode is internal to the module.
Connect a 0.1
F
or higher ceramic capacitor between VSWH node at pin 5.
Gate of the HS FET. Used for module testing during production. No user connections.
Switching or phase node connected to source of high side MOSFET and drain of the low side
MOSFET. Electrically attached to the LS FET drain tab, this pin is dedicated for BOOT Cap
connection and needs to be connected to Pin 13 externally on PCB.
Power input to the switching MOSFETs. Attached to the HS FET drain tab.
Power ground.
Switching or phase node connected to source of high side MOSFET and drain of the low side
MOSFET. Electrically attached to the LS FET drain tab.
Gate of the LS FET. Used for module testing during production. No user connections.
Control or analog ground for return of control signals and bypass capacitors.
Power input to the switching MOSFETs. Attached to the HS FET drain tab.
Disable pin for the controller. Both gates are held active low when EN is grounded.
Pulse Width Modulated Tri-State input from external controller.
6, 7, 8
9, 10, 11, 12,
17, 18
13, 14, 15, 16
19
20
21
22
23
VIN
PGND
VSWH
GL
CGND
VIN
EN
PWM
Functional Block Diagram
VCC
BOOT
VIN
VCC
UVLO
PWM
VSWH
VCC
EN
SMOD
Complementary
Control Logic
Shoot
Through
Control
PGND
CGND
Rev. 3.0 May 2018
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Page 3 of 13
AOZ5019
Absolute Maximum Ratings
Exceeding the Absolute Maximum ratings may damage the
device.
Recommended Operating Conditions
The device is not guaranteed to operate beyond the Maximum
Recommended Operating Conditions.
Parameter
Supply Voltage (VIN)
Switch Node Voltage (VSWH)
Switch Node Voltage Transient
(1)
Bootstrap Voltage (VBOOT)
VBOOT Voltage Transient
(1)
Rating
-0.3 V to 30 V
-0.3 V to 30 V
38V
-0.3 V to 30 V
40 V
-0.3 V to 7 V
-0.3 V to VCC +0.3 V
-65 °C to +150 °C
150 °C
2 kV
Parameter
Supply Voltage (VIN)
Supply and Gate Drive Voltages
{VCC, (VBOOT – VSWH)}
Control Inputs
(PWM, SMOD, EN)
Operating Frequency
Rating
4.5 V to 25 V
4.5 V to 5.5 V
0 V to VCC – 0.3 V
200 kHz to 1.5 MHz
Supply and Gate Drive Voltages:
{VCC, (VBOOT – VSWH)}
Control Inputs
(PWM, SMOD, EN)
Storage Temperature (T
S
)
Junction Temperature (T
J
)
ESD Rating
(2)
Notes:
1. Peak voltages can be applied for 100 nS per switching cycle.
2. Devices are inherently ESD sensitive, handling precautions are
required. Human body model rating: 1.5 k in series with 100 pF.
Electrical Characteristics
(3)
T
A
= 25°C, V
IN
= 12V, V
CC
= 5 V unless otherwise specified.
Symbol
VIN
VCC
R
JC
(4)
R
JA
(4)
Parameter
Operating Voltage
Thermal Resistance
Conditions
Min.
4.5
4.5
Typ.
Max.
25
5.5
Units
V
V
°C / W
°C / W
PCB Temp = 100 °C
AOS Evaluation Board
3
10
3.5
550
50
350
650
25
60
3.6
0.8
1.0
3.4
3.9
1.0
±250
1.3
3.7
280
170
1.6
4.0
4.1
1.2
3.9
75
500
INPUT SUPPLY AND UVLO
V
CC
V
CCHYST
I
VCC
Control Circuit Bias Current
EN = 0, VCC = 5 V
EN = High, V
PWM
= Open
EN = High, V
PWM
= 0 V
I
VC
PWM INPUT
V
PWMH
V
PWML
I
PWM
V
TRIH
V
TRIL
V
TRRH
V
TRFH
PWM Input High Threshold
PWM Input Low Threshold
PWM Pin Input Current
PWM Input Tri-State
Threshold
Tri-State Threshold
Hysteresis
V
PWM
Rising, VCC = 5 V
V
PWM
Falling, VCC = 5 V
Source or Sink, V
PWM
= 0 V to 5 V
V
PWM
Rising, VCC = 5 V
V
PWM
Falling, VCC = 5 V
V
PWM
Rising, VCC = 5 V
V
PWM
Falling, VCC = 5 V
V
V
A
V
V
mV
mV
Drive Circuit Operating
Current
EN = High, V
PWM
= 300 kHz @ 50%
EN = High, V
PWM
= 1 MHz @ 50%
Undervoltage Lockout
V
CC
Rising
V
mV
A
A
A
mA
mA
Rev. 3.0 May 2018
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Page 4 of 13
AOZ5019
Electrical Characteristics
(3)
(Continued)
T
A
= 25°C, V
IN
= 12V, V
CC
= 5 V unless otherwise specified.
Symbol
EN INPUT
V
ENON
V
ENOFF
I
EN
V
SMODH
V
SMODL
I
SMOD
t
PDLU
t
PDLL
t
PDHU
t
PDHL
t
TSSHD
t
PTS
Notes:
Parameter
Outputs Enable Threshold
Outputs Disable Threshold
EN Pin Input Current
SMOD Enable Threshold
SMOD Disable Threshold
SMOD Pin Input Current
PWM to HS Gate
PWM to LS Gate
LS to HS Gate Deadtime
HS to LS Gate Deadtime
Tri-State Shutdown Delay
Tri-State Propagation Delay
VCC = 5 V
VCC = 5 V
Conditions
Min.
2.0
Typ.
Max.
Units
V
0.8
±10
2.0
0.8
±10
18
25
20
20
150
35
V
A
V
V
A
ns
ns
ns
ns
ns
ns
Source or Sink
VCC = 5 V
VCC = 5 V
Source or Sink
PWM H
L, GH H
L
PWM L
H, GL H
L
GL H
L, GH L
H
GH H
L, GL L
H
SMOD INPUT
GATE DRIVER TIMINGS
4. All voltages are specified with respect to the corresponding GND pin
5. Characterisation value. Not tested in production.
Rev. 3.0 May 2018
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Page 5 of 13
单片机
