SGM6022 [SGMICRO]
6MHz, 600mA Synchronous Buck Regulator;
| 型号： | SGM6022 |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | 6MHz, 600mA Synchronous Buck Regulator |
| 文件： | 总15页 (文件大小：1758K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM6022
6MHz, 600mA Synchronous
Buck Regulator
GENERAL DESCRIPTION
FEATURES
The SGM6022 is a high-efficient Buck switching
voltage regulator, supporting up to 600mA output
current and fixed output voltage. This device is
capable to provide an input voltage supply range of
2.5V to 5.5V. The 6MHz fixed frequency operation
allows the use of a 470nH output inductor and a
4.7μF output capacitor.
● 2.5V to 5.5V Input Voltage Range
● 600mA Output Current Capability
● 22μA Typical Quiescent Current
● 6MHz Fixed Frequency Operation
● Excellent Efficiency and Load Transient Response
● Precision Preset Voltage Selectable from 4 Preset
Voltages in 1.02V ~ 3V Range
The SGM6022 operates in power-save mode under
moderate and light load conditions through pulse
frequency modulation (PFM). The 22μA typical
quiescent current and the power-save mode can
further improve the system efficiency which can
reach a maximum of 90%. The SGM6022 also has
excellent load transient response capability. Its
output could be programmed to four different
voltages, as well as two different on/off delay times,
making it ideal for designing primary supplies. The
SGM6022 also includes the features of internal
soft-start, input under-voltage lockout, thermal
shutdown and overload protection.
● Programmable Output Voltage
● Low Ripple Light-Load PFM Mode
● Internal Soft-Start
● Input Under-Voltage Lockout (UVLO)
● Overload Protection
● Thermal Shutdown
● Output Discharge
● Available in a Green TDFN-2×2-6LPackage
● -40℃ to +125℃ Operating Temperature Range
APPLICATIONS
Digital Cameras
The SGM6022 is available in a Green TDFN-2×2-6L
package. It operates over an ambient temperature
range of -40℃ to +125℃.
4G, WiFi, WiMAsX, and WiBro Data Cards
Tablet Computers
Netbooks, Ultra-Mobile PCs
TYPICAL APPLICATION
L
5
1
VIN
SW
470nH
SGM6022
CIN
2.2μF
2
3
4
VS
FB
COUT
4.7μF
GND
Figure 1. Typical Application Circuit
SG Micro Corp
JUNE2022–REV. A.2
www.sg-micro.com
6MHz, 600mA Synchronous
Buck Regulator
SGM6022
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
GDA
XXXX
SGM6022-1
SGM6022-2
SGM6022-3
SGM6022-4
TDFN-2×2-6L
TDFN-2×2-6L
TDFN-2×2-6L
TDFN-2×2-6L
SGM6022-1XTDI6G/TR
SGM6022-2XTDI6G/TR
SGM6022-3XTDI6G/TR
SGM6022-4XTDI6G/TR
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
-40℃ to +125℃
-40℃ to +125℃
-40℃ to +125℃
-40℃ to +125℃
GDB
XXXX
GH8
XXXX
GDC
XXXX
SELECTABLE MODEL
MARKING INFORMATION
NOTE: XXXX = Date Code.
VOUT
V1
(V)
V2
(V)
V3
(V)
MODEL
(V)
Serial Number
Y Y Y
XX XX
SGM6022-1
SGM6022-2
SGM6022-3
SGM6022-4
1.25
3
1.2
2.8
2.5
1.6
1.1
2.4
2.2
1.4
1.02
2
Date Code - Week
Date Code - Year
2.8
1.8
1.8
1.2
Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If
you have additional comments or questions, please contact your SGMICRO representative directly.
ABSOLUTE MAXIMUM RATINGS
OVERSTRESS CAUTION
Input Voltage..................................................... -0.3V to 6.5V
Voltage on SW and VS.........................-0.3V to VIN + 0.3V (3)
Junction Temperature.................................................+150℃
Storage Temperature Range........................-65℃ to +150℃
Lead Temperature (Soldering, 10s)............................+260℃
ESD Susceptibility
Stresses beyond those listed in Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to
absolute maximum rating conditions for extended periods
may affect reliability. Functional operation of the device at any
conditions beyond those indicated in the Recommended
Operating Conditions section is not implied.
HBM.............................................................................4000V
MM.................................................................................400V
ESD SENSITIVITY CAUTION
This integrated circuit can be damaged if ESD protections are
not considered carefully. SGMICRO recommends that all
integrated circuits be handled with appropriate precautions.
Failureto observe proper handlingand installation procedures
can cause damage. ESD damage can range from subtle
performance degradation tocomplete device failure. Precision
integrated circuits may be more susceptible to damage
because even small parametric changes could cause the
device not to meet the published specifications.
NOTE: 3. Lesser of 6.5V or VIN + 0.3V.
RECOMMENDED OPERATING CONDITIONS
Inductor, L....................................................................470nH
Input Capacitor, CIN ...................................................... 2.2μF
Output Capacitor, COUT ................................................. 4.7μF
Supply Voltage Range........................................2.5V to 5.5V
Operating Temperature Range.....................-40℃ to +125℃
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
SG Micro Corp
JUNE 2022
www.sg-micro.com
2
6MHz, 600mA Synchronous
Buck Regulator
SGM6022
PIN CONFIGURATION
(TOP VIEW)
GND
IC
1
2
3
6
5
4
VIN
VS
SW
FB
GND
TDFN-2×2-6L
PIN DESCRIPTION
PIN
NAME
FUNCTION
1
VIN
Input Voltage. Connect to input power source.
Voltage Selection and Programming Input. Pull this pin up for period > (tBLANK + tSS) to start
from shutdown state to output a default voltage or a programmable voltage, and pull this
pin down for period (> tSTOP) to select the default voltage or shut down its operation. This
pin internally ties to a bias that is slightly higher than logic low threshold unless in
shutdown state, which keeps it stay as logic high even when the external control IO is in
Hi-Z status.
2
VS
3
4
5
6
GND
FB
Ground. All signals are referenced to this pin.
Feedback/VOUT. Connect to output voltage.
Switching Node. Connect to output inductor.
For Internal Connection.
SW
IC
Exposed
Pad
GND
Connect to GND.
SG Micro Corp
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JUNE 2022
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6MHz, 600mA Synchronous
Buck Regulator
SGM6022
ELECTRICAL CHARACTERISTICS
(Minimum and maximum values are at VIN = VVS = 2.5V to 5.5V, Full = -40℃ to +125℃; typical values are at VIN = VVS = 3.6V, TA
= +25℃, unless otherwise noted.)
PARAMETER
Power Supplies
SYMBOL
CONDITIONS
TEMP
MIN
TYP
MAX
UNITS
Input Voltage Range
VIN
IQ
Full
2.5
5.5
40
V
μA
μA
V
Quiescent Current
No Load, Not Switching
VS = GND
Full
22
Shutdown Supply Current
Under-Voltage Lockout Threshold
Under-Voltage Lockout Hysteresis
VS Logic Input
ISD
0.45
2.15
150
1
+25℃
+25℃
+25℃
VUVLO
VUVHYST
Rising VIN
2.42
mV
Enable High-Level Input Voltage
Enable Low-Level Input Voltage
Switching
VIH
VIL
Full
Full
1.0
5.5
V
V
0.15
6.5
Switching Frequency
Output
fSW
6
MHz
VIN = 3.6V, TA = +25℃
+25℃
Full
Full
1.201
1.150
1.056
0.976
1.250
1.200
1.100
1.000
200
1.277
1.226
1.126
1.047
Output Voltage
VOUT
VIN = 2.5V to 5.5V
V
Full
Full
Soft-Start
tSS
From VS Rising Edge
μs
+25℃
Output Driver
PMOS On Resistance
NMOS On Resistance
PMOS Peak Current Limit
Output Discharge Resistance
Thermal Shutdown
VIN = VGS = 3.6V
VIN = VGS = 3.6V
350
250
1900
230
160
15
mΩ
mΩ
mA
Ω
+25℃
+25℃
+25℃
+25℃
RDS(ON)
ILIM(OL)
RDIS
1630
2130
VS = GND
TTSD
THYS
℃
Thermal Shutdown Hysteresis
Digital VS Interface
Power-On Blanking Time
VS Change Stop Time
Shutdown Delay
℃
tBLANK
tSTOP
40
2.5
110
45
ms
ms
ms
ms
ms
+25℃
+25℃
+25℃
+25℃
+25℃
2
90
3
tOFF
130
55
tOFF Hold On Time
tOFF-HOLD
tPULSE
35
Effective Pulse Time
0.15
2.8
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4
6MHz, 600mA Synchronous
Buck Regulator
SGM6022
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = VVS = 3.6V, TA = +25℃, VOUT = 1.2V, unless otherwise noted.
Load Transient
Load Transient
AC Coupled
AC Coupled
VOUT
VOUT
IL
IL
IOUT
IOUT
VIN = VVS = 3.6V, IOUT = 10-200-10mA
Time (20μs/div)
VIN = VVS = 3.6V, IOUT = 200-600-200mA
Time (20μs/div)
Line Transient
AC Coupled
Line Transient
AC Coupled
VIN
VIN
VOUT
VOUT
IL
IL
VIN = 3.3-3.9-3.3V, VVS = 3.6V, IOUT = 36mA
Time (20μs/div)
VIN = 3.3-3.9-3.3V, VVS = 3.6V, IOUT = 600mA
Time (50μs/div)
Combined Line/Load Transient
Combined Line/Load Transient
VIN
VIN
AC Coupled
VOUT
AC Coupled
VOUT
IL
IL
VIN = 3.9-3.3V, VVS = 3.6V, IOUT = 36-400mA
Time (10μs/div)
VIN = 3.3-3.9V, VVS = 3.6V, IOUT = 400-36mA
Time (10μs/div)
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www.sg-micro.com
JUNE 2022
5
6MHz, 600mA Synchronous
Buck Regulator
SGM6022
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = VVS = 3.6V, TA = +25℃, VOUT = 1.2V, unless otherwise noted.
Over-Current, Load Increasing Past Current Limit
250mΩ Fault, Rapid Fault
VOUT
VOUT
IL
IL
Time (2ms/div)
Time (2ms/div)
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6
6MHz, 600mA Synchronous
Buck Regulator
SGM6022
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = VVS = 3.6V, TA = +25℃, VOUT = 1.2V, unless otherwise noted.
Efficiency vs. Load Current and Input Voltage
Frequency vs. Load Current and Input Voltage
90
85
80
75
70
65
60
7.5
6.0
4.5
3.0
1.5
0.0
VIN = 2.7V
VIN = 2.7V
V
V
V
IN = 3.6V
IN = 4.2V
IN = 5V
V
V
V
IN = 3.6V
IN = 4.2V
IN = 5V
VOUT = 1.1V
VOUT = 1.2V
0
100 200 300 400 500 600 700
0
100
200
300
400
500
600
Load Current (mA)
Load Current (mA)
ΔVOUT (%) vs. Load Current and Input Voltage
PFM/PWM Boundary vs. Input Voltage
VOUT = 1.2V
4
3
200
150
100
50
VOUT = 1.2V,
Nomallized to VIN = 3.6V,
OUT = 500mA
I
2
VIN = 2.7V
V
V
V
IN = 3.6V
IN = 4.2V
IN = 5V
1
0
-1
0
100
200
300
400
500
600
2.5
3
3.5
4
4.5
5
5.5
Load Current (mA)
Input Voltage (V)
Efficiency vs. Load Current
90
85
80
75
70
65
60
VIN = 2.7V
V
V
V
IN = 3.6V
IN = 4.2V
IN = 5V
VOUT = 1.2V
100
0
200
300
400
500
600
Load Current (mA)
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JUNE 2022
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7
6MHz, 600mA Synchronous
Buck Regulator
SGM6022
OPERATION DESCRIPTION
The SGM6022 is a synchronous Buck converter
capable of delivering 600mA load to the output from an
input supply range from 2.5V to 5.5V. The SGM6022
integrates a synchronous rectifier to improve the
conversion efficiency up to 90% peak, while PFM mode
light load efficiency reaches over 80% at 1mA load.
inrush current drawn from the input.
The current limit protection is active during soft-start,
the device might not start up properly if heavy load is
applied during start-up.
Current Limit, Fault Shutdown and Restart
Output short-to-ground or output over-current will
cause the peak inductor current flowing through the
high-side switch to reach the current limit. If the current
limit is triggered, the device stops switching, turning off
the high-side FET to prevent the inductor current from
continuing to rise. During the over-current event, the
regulator shuts down for about 1.3ms, and the soft-start
circuit attempts to restart for 200μs. If the over-current
event remains, this pattern repeats, and the device
automatically resumes operation if over-current
condition is removed.
The device operates with 6MHz switching frequency at
PWM mode which significantly reduces the external
components size. The device only needs a 470nH
inductor and 4.7μF as the output capacitor.
Control Scheme
The SGM6022 adopts the COT architecture to regulate
the output voltage while maintaining excellent load
transient response. The device’s internal frequency
loop keeps the switching frequency constant at 6MHz
throughout the input voltage range and load current.
The device allows the use of low ESR ceramic
capacitor to maintain output voltage regulation.
Effective Pulse at VS Pin
A pulse with width less than tPULSE is treated as an
At light load, the SGM6022 automatically operates in
PFM mode to achieve high light load efficiency. The
device can seamlessly transit to PFM, DCM or CCM
based on the load current.
effective pulse. Consecutive pulses will be counted if
delay between adjacent pulses is within the tSTOP
.
Please refer to Figure 2 for a graphical explanation.
200µs < tPULSE <2ms
Soft-Start
Toggling the EN pin above the 1.5V rising threshold,
the device starts switching with an internal soft-start
time. During start-up, the internal reference voltage is
slowly ramped up to the 0.8V reference voltage to
prevent any output voltage overshoot and reduce the
200µs < tPULSE <2ms
Figure 2. Effective Pulse at VS Pin
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8
6MHz, 600mA Synchronous
Buck Regulator
SGM6022
OPERATION DESCRIPTION (continued)
During the tOFF-HOLD time after shutdown, the pulses
applied to VS Pin are ignored.
VS Pin Interface Functions
In order to enable the IC from shutdown mode, two
conditions must be met:
To restart the regulator, the VS pin must be pulled high
for at least tSS time.
1. VIN voltage is higher than UVLO threshold.
2. 2~5 pulses followed by VS pin being high for longer
than tOFF will set the output voltage to the default, V1,
V2 and V3 respectively.
2. VS pin is floating or VS pin stays logic high for at
least tBLANK + tSS time.
After that, the pulses at VS pin become effective and
can be used to shut down the IC or program the output
voltage. The following are the three cases that the VS
pin affects the regulator:
3. 2 or more pulses followed by VS pin being low for
longer than tOFF will set the output voltage to the default
value.
Other pulse patterns will have no effects on the IC.
1. 1 pulse followed by VS pin being low for longer than
tOFF will shut down the regulator.
1 pulse at VS
pin and setting
VS high for
For startup from shutdown,
5 pulses at VS pin after
4 pulses at VS pin and
6 pulses at VS pin and
setting VS high for
longer than tSTOP, output
last set voltage (V2).
Setting VS low for longer than
OFF after one pulse at VS pin,
the regulator will shut down.
setting VS low for longer
than tSTOP, output default
voltage. Setting VS high for
longer than tSTOP, output V2.
Output default voltage
t
t
OFF-HOLD + tSS, and setting
VS high for longer than
STOP, output V3.
longer than
t
STOP, output last
t
set voltage (V3).
VCC
Default
Default
Default
tSTOP
V3
V2
VOUT
tSTOP
tSTOP
tSTOP
tBLANK
tSS
tSS
VS
tSTOP
tOFF
tOFF-HOLD
Figure 3. Program Output Voltage via VS Pin
Under-Voltage Lockout (UVLO)
Thermal Shutdown (TSD)
A thermal shutdown function is implemented to prevent
damage caused by excessive heat and power
dissipation. Once a temperature of typically +160°C is
exceeded, the device is shut down. The device is
released from shutdown automatically when the
junction temperature decreases by +15℃.
The SGM6022 implements input voltage UVLO to stop
device operation when the input voltage drops below
the UVLO threshold. The device cannot restart again
until the input voltage raises higher than the additional
150mV (TYP) hysteresis.
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9
6MHz, 600mA Synchronous
Buck Regulator
SGM6022
APPLICATION INFORMATION
Higher inductance results in lower RMS current,
however, transient response is degraded. For the same
family of inductors, higher inductance parts result in
higher DCR and lower saturation current.
Selecting the Inductor
The selected inductor should have enough saturation
current rating to meet the maximum load current. In
addition, the selected inductor value affects the peak
current, PWM to PFM transition point and efficiency.
Use Equation below to calculate the inductor ripple
current:
Table 1 summarizes the performance effects of
inductance higher or lower than the recommended
0.47μH inductor.
VOUT V − VOUT
IN
(1)
Table 1. Effects of Changes in Inductor Value (from
470nH Recommended Value)
∆I ≈
⋅(
)
V
L⋅ fSW
IN
The maximum load current, IMAX(LOAD) can be calculated
using Equation below:
INDUCTOR
VALUE
TRANSIENT
RESPONSE
IMAX(LOAD)
ΔVOUT
Increase
Increase
Decrease
Increase
Degraded
Improved
∆I
2
(2)
I MAX(LOAD)= ILIM(PK) − (
)
Decrease
Decrease
When the inductor’s valley current crosses zero, the
device transits from PFM to PWM operation. Use
Equation below to calculate the DC current when the
inductor current reaches zero:
Output Capacitor
A
4.7μF 0402 ceramic output capacitor is
recommended for SGM6022. Larger size as 0603
results in higher effective capacitance under the same
DC de-rating, which improves transient response and
output ripple.
∆I
(3)
I DCM
=
2
470nH is recommended for SGM6022. For
application’s duty cycle higher than 60%, 1μH inductor
is recommended. In addition, the recommended
maximum operation duty cycle for SGM6022 is 75%.
The selected inductor should have at least 80% of the
Use Equation below to calculate the output voltage
ripple:
fSW ⋅COUT ⋅ESR2
2 ⋅D ⋅(1−D)
1
(5)
∆VOUT = ∆I
+
L
8 ⋅ fSW ⋅COUT
inductance at ILIM(PK)
.
Inductor’s DCR and inductance affect the conversion
efficiency. Inductor with lower inductance generally has
lower DCR which improves the efficiency, however, the
RMS current is increased due to increased peak to
peak ripple current ΔI. Higher ΔI increases the inductor
core loss which reduces the efficiency. Use Equation
below to calculate the inductor RMS current:
Input Capacitor
A 2.2μF ceramic input capacitor is recommended to
place as close as possible between the VIN pin and
GND to minimize the parasitic inductance. For the
applications where the SGM6022 is located far away
from the input source, a 47µF or higher capacitance
capacitor is recommended to damp the wiring
harness’s inductance.
∆I2
2
(4)
I RMS= IOUT(DC)
+
12
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JUNE 2022
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6MHz, 600mA Synchronous
Buck Regulator
SGM6022
APPLICATION INFORMATION (continued)
Table 2. Recommended Passive Components and their Variation Due to DC Bias
COMPONENT DESCRIPTION
VENDOR
MIN
TYP
MAX
470nH,
2012,90mΩ,
1.1A
Murata LQM21PNR47MC0 Murata
LQM21PNR54MG0 Hitachi Metals HLSI 201210R47
L
470nH
1μH, 2012,
0.1Ω, 1.5A
1μH, 2012,
0.067Ω, 3.4A
0.47μH, 2012,
0.033Ω, 5.15A
L
L
L
Murata LQM21PN1R0MGH
Sunlord WPG201210UF1R0MT
Sunlord WPG201210UFR47MT
1μH
1μH
0.47μH
2.2μF, 6.3V,
X5R, 0402
4.7μF, X5R,
0402
Murata or Equivalent GRM155R60J225ME15
GRM188R60J225KE19D
Murata or Equivalent GRM155R60G475M
GRM155R60E475ME760
CIN
1.0μF
1.6μF
2.2μF
4.7μF
COUT
IC as possible, and use wide and short traces for
current carrying traces to minimize PCB inductance.
For Buck converter, the input capacitor’s current loop
from VIN pin back to the GND pin of the device should
be as small as possible.
PCB Layout Guidelines
In addition to component selection, layout is a critical
step to ensure the performance of any switch mode
power supplies. Poor layout could result in system
instability, EMI failure, and device damage. Thus, place
the inductor, input and output capacitors as close to the
Figure 4. PCB Layout Guidance
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11
6MHz, 600mA Synchronous
Buck Regulator
SGM6022
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
JUNE 2022 ‒ REV.A.1 to REV.A.2
Page
Updated the Detailed Description and Application Information sections................................................................................................... 8, 10, 11
JULY 2020 ‒ REV.A to REV.A.1
Page
Updated the Operating Temperature Range................................................................................................................................................ 1, 2, 4
Changes from Original (APRIL 2017) to REV.A
Changed from product preview to production data.............................................................................................................................................All
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12
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
TDFN-2×2-6L
D
e
N6
D1
L
E1
E
SEE DETAIL A
k
N3
N1
b
BOTTOM VIEW
TOP VIEW
1.40
0.65
A
A1
0.80
2.60
A2
SIDE VIEW
0.24
0.65
N2
N1
N2
N1
RECOMMENDED LAND PATTERN (Unit: mm)
DETAIL A
Pin #1 ID and Tie Bar Mark Options
NOTE: The configuration of the Pin #1 identifier is optional,
but must be located within the zone indicated.
Dimensions
In Millimeters
Dimensions
In Inches
Symbol
MIN
MAX
0.800
0.050
MIN
0.028
0.000
MAX
0.031
0.002
A
A1
A2
D
0.700
0.000
0.203 REF
0.008 REF
1.900
1.100
1.900
0.600
2.100
1.450
2.100
0.850
0.075
0.043
0.075
0.024
0.083
0.057
0.083
0.034
D1
E
E1
k
0.200 MIN
0.650 TYP
0.008 MIN
0.026 TYP
b
0.180
0.250
0.300
0.450
0.007
0.010
0.012
0.018
e
L
SG Micro Corp
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TX00055.001
PACKAGE INFORMATION
TAPE AND REEL INFORMATION
REEL DIMENSIONS
TAPE DIMENSIONS
P2
P0
W
Q2
Q4
Q2
Q4
Q2
Q4
Q1
Q3
Q1
Q3
Q1
Q3
B0
Reel Diameter
P1
A0
K0
Reel Width (W1)
DIRECTION OF FEED
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF TAPE AND REEL
Reel Width
Reel
Diameter
A0
B0
K0
P0
P1
P2
W
Pin1
Package Type
W1
(mm)
(mm) (mm) (mm) (mm) (mm) (mm) (mm) Quadrant
TDFN-2×2-6L
7″
9.5
2.30
2.30
1.10
4.0
4.0
2.0
8.0
Q1
SG Micro Corp
TX10000.000
www.sg-micro.com
PACKAGE INFORMATION
CARTON BOX DIMENSIONS
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF CARTON BOX
Length
(mm)
Width
(mm)
Height
(mm)
Reel Type
Pizza/Carton
7″ (Option)
7″
368
442
227
410
224
224
8
18
SG Micro Corp
www.sg-micro.com
TX20000.000
相关型号：
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