AAT1210 - Skyworks Solutions, Inc.

DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
General Description
Features
The AAT1210 is a high power DC/DC boost (step-up)
converter with an input voltage range from 2.7 to 5.5V.
The output voltage can be set from VIN + 0.5V to 18V.
The total solution is less than 1mm in height. High operating efficiency makes the AAT1210 the ideal solution for
battery powered and consumer applications.
• VIN Range: 2.7V to 5.5V
• Maximum Continuous Output
▪ 900mA at 5V
▪ 300mA at 12V
▪ 150mA at 18V
• Up to 2MHz Switching Frequency
• Ultra-Small Inductor and Capacitors
▪ 1mm Height Inductor
▪ Small Ceramic Capacitors
• Hysteretic Current Mode Control
▪ No External Compensation
▪ Excellent Transient Response
▪ High Efficiency at Light Load
• Up to 90% Efficiency
• Integrated Low RDS(ON) MOSFET Switches
• Low Inrush with Integrated Soft Start
• Cycle-by-Cycle Current Limit
• Short-Circuit and Over-Temperature Protection
• True Load Disconnect
• Optional Dynamic Voltage Programming
• TDFN34-16 Package
• -40°C to +85°C Temperature Range
The step-up converter operates at frequencies up to
2MHz, enabling ultra-small external filtering components. Hysteretic current mode control provides excellent transient response with no external compensation,
achieving stability across a wide operating range with
minimal design effort.
The AAT1210 true load disconnect feature extends battery life by isolating the load from the power source
when the EN/SET pin is pulled low, ensuring zero volts
output during the disable state. This feature eliminates
the external boost converter leakage path and achieves
standby quiescient current <1μA without an external
switching device.
A fixed output voltage is set using two external resistors.
Alternatively, the output may be adjusted dynamically
across a 2.0x range. The output can toggle between two
preset voltages using the SEL logic pin. Optionally, the
output can be dynamically set to any one of 16 programmed levels using Skyworks' patented Simple Serial
Control™ (S2Cwire™) interface.
The AAT1210 is available in a Pb-free, thermallyenhanced 16-pin 3x4mm TDFN low-profile package and
is rated over the -40°C to +85°C temperature range.
Applications
•
•
•
•
•
•
GPS Systems
DVD Blu-Ray
Handheld PCs
PDA Phones
Portable Media Players
USB OTG
Typical Application
VIN
3.6V
VOUT
5V @ 900mA
L1
0.47μH
AAT1210
TDFN34-16
AAT1210 Boost Converter Output Capability
(TDFN34-12; TAMB = 25°°C; TC(RISE) = +50°C)
D1
LIN
EN/SET
SW
SEL
FB1
GND
C1
4.7μF
0603
FB2
R2
4.99kΩ
1400
R1
36.5kΩ
C2
10μF
0603
Output Current (mA)
VIN
VIN = 4.5V
1200
1000
VIN = 3.6V
800
VIN = 2.7V
600
400
200
0
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Output Voltage (V)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
1
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Pin Descriptions
Pin #
Symbol
1, 2
LIN
3
FB1
4
FB2
5
GND
6, 7, 8
PGND
9, 10
11
12
SW
N/C
VIN
13
SEL
14
EN/SET
15, 16
VP
EP
Function
Switched power input. Connect to the power inductor.
Feedback pin for high output voltage set point. Pin set to 1.2V when SEL is high and disabled when SEL is
low. Disabled with S2Cwire control. Tie directly to FB2 pin for static (fixed) output voltage.
Feedback pin for low output voltage set point. Pin set to 0.6V when SEL is low and disabled when SEL is
high. Voltage is set from 0.6V to 1.2V with S2Cwire control. Tie directly to FB1 pin for static (fixed) output
voltage.
Ground pin.
Power ground for the boost converter; connected to the source of the N-channel MOSFET. Connect to the
input and output capacitor return.
Boost converter switching node. Connect the power inductor between this pin and the LIN pin.
No connection.
Input voltage for the converter. Connect this pin directly to the VP pin.
Logic high selects FB1 high output reference. Logic low selects FB2 low output reference. Pull low for
S2Cwire control.
Active high enable pin. Alternately, input pin for S2Cwire control using the FB2 reference.
Input power pin; connected internally to the source of the P-channel MOSFET. Connect externally to the
input capacitor(s).
Exposed paddle (bottom). Connected internally to the SW pins. Can be tied to bottom side PCB heat sink
to optimize thermal performance.
Pin Configuration
TDFN34-16
(Top View)
LIN
LIN
FB1
FB2
GND
PGND
PGND
PGND
2
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
VP
VP
EN/SET
SEL
VIN
N/C
SW
SW
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Absolute Maximum Ratings1
Symbol
Description
Value
Units
VIN, VP
SW
LIN, EN/SET,
SEL, FB1, FB2
TJ
TS
TLEAD
Input Voltage
Switching Node
-0.3 to 6.0
20
V
V
VIN + 0.3
V
-40 to 150
-65 to 150
300
°C
°C
°C
Value
Units
44
2270
°C/W
mW
Maximum Rating
Operating Temperature Range
Storage Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
Recommended Operating Conditions
Symbol
JA
PD
Description
Thermal Resistance
Maximum Power Dissipation (TA = 25°C)
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions
specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
3
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Electrical Characteristics1
VIN = 3.6V, TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.
Symbol
Description
Power Supply
VIN
VOUT
Conditions
Input Voltage Range
Output Current2
VUVLO
UVLO Threshold
IQ
Quiescent Current
ISHDN
VIN Pin Shutdown Current
FB1
FB1 Reference Voltage
FB2
FB2 Reference Voltage
VLOADREG
VLINEREG/VIN
RDS(ON)L
RDS(ON)IN
TSS
Load Regulation
Line Regulation
Low Side Switch On Resistance
Input Disconnect Switch On
Resistance
Soft-Start Time
TSD
THYS
ILIM
SEL, EN/SET
VSEL(L)
VSEL(H)
VEN/SET(L)
VEN/SET(H)
TEN/SET LO
TEN/SET HI MIN
TEN/SET HI MAX
TOFF
TLAT
IEN/SET
Over-Temperature Shutdown
Threshold
Shutdown Hysteresis
N-Channel Current Limit
SEL Threshold Low
SEL Threshold High
Enable Threshold Low
Enable Threshold High
EN/SET Low Time
Minimum EN/SET High Time
Maximum EN/SET High Time
EN/SET Off Timeout
EN/SET Latch Timeout
EN/SET Input Leakage
Typ
2.7
VIN +
0.5V
Output Voltage Range
IOUT(MAX)
Min
VIN = 2.7V, VOUT = 5V
VIN = 2.7V, VOUT > 5V
VIN = 3.6V, VOUT > 5V
VIN Rising
Hysteresis
VIN Falling
SEL = GND, VOUT = 5V, No Load,
Switching3
SEL = GND, FB2 = 1.5V, Not Switching
EN/SET = GND
IOUT = 0 to IOUT(MAX) mA, VIN = 2.7V to
5.0V, SEL = High
IOUT = 0 to IOUT(MAX) mA, VIN = 2.7V to
5.0V, SEL = Low
IOUT = 0 to IOUT(MAX) mA
VIN = 3.0V to 5.5V
VIN
VIN
VIN
VIN
=
=
=
=
2.7V
5.5V
2.7V
5.5V
Units
5.5
V
18
V
600
See note 2
900
mA
2.7
150
V
mV
V
250
μA
1.8
40
70
1.0
μA
μA
1.164
1.2
1.236
V
0.582
0.6
0.618
V
From Enable to Output Regulation;
VOUT = 15V , COUT = 10μF
VIN = 3.6V , L =2.2μH
Max
0.01
0.6
0.06
%/mA
%/V

0.18

2.5
ms
140
°C
15
°C
A
3.0
0.4
1.4
0.4
1.4
0.3
75
50
-1
75
500
500
1
V
V
V
V
μs
ns
μs
μs
μs
μA
1. Specifications over the -40°C to +85°C operating temperature range are assured by design, characterization and correlation with statistical process controls.
2. Maximum output power and current is dependent upon operating efficiency and thermal/mechanical design. Output current and output power derating may apply. See Figure 1.
3. Total input current with prescribed FB resistor network can be reduced with larger resistor values.
4
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Typical Characteristics
Efficiency vs. Load
DC Regulation
(VOUT = 5V)
(VOUT = 5V)
95
2
75
VIN = 4.2V
65
VIN = 4.5V
1
VIN = 3.6V
VIN = 4.5V
55
45
Output Error (%)
Efficiency (%)
85
0
-1
VIN = 4.2V
VIN = 3.6V
VIN = 3.0V
VIN = 2.7V
-2
-3
-4
35
-5
25
0.1
1
10
100
0.1
1000
1
10
Output Current (mA)
95
DC Regulation
(VOUT = 9V)
(VOUT = 9V)
2
75
65
VIN = 3.6V
VIN = 4.2V
45
VIN = 4.5V
-1
-5
100
VIN = 3.6V
-3
-4
10
VIN = 4.2V
-2
25
1
VIN = 3.0V
VIN = 2.7V
0.1
1000
1
Output Current (mA)
DC Regulation
(VOUT = 12V)
VIN = 5.5V
2
VIN = 4.5V
VIN = 3.6V
VIN = 4.2V
55
VIN = 5.5V
1
75
65
45
35
0
10
Output Current (mA)
100
1000
VIN = 3.6V
-2
VIN = 3.0V
-3
-5
0.1
VIN = 4.5V
VIN = 4.2V
-1
VIN = 2.7V
-4
1
1000
Output Current (mA)
Output Error (%)
Efficiency (%)
100
(VOUT = 12V)
85
25
0.1
10
Efficiency vs. Load
95
VIN = 4.5V
0
35
0.1
VIN = 5.5V
1
Output Error (%)
Efficiency (%)
Efficiency vs. Load
55
1000
Output Current (mA)
VIN = 5.5V
85
100
1
10
100
1000
Output Current (mA)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected].com • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
5
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Typical Characteristics
Efficiency vs. Load
DC Regulation
(VOUT = 15V)
(VOUT = 15V)
2
95
75
65
VIN = 3.6V
55
VIN = 4.2V
45
0
VIN = 4.2V
-1
VIN = 3.6V
-2
VIN = 3.0V
-3
VIN = 2.7V
-4
35
25
0.1
1
10
100
-5
0.1
1000
1
Output Current (mA)
0.4
Output Error (%)
Accuracy (%)
(VIN = 3.6V; VOUT = 12V; IOUT = 100mA)
VIN = 5.5V
0.5
VIN = 2.7V
0
-0.5
VIN = 3.6V
-1
VIN = 3.0V
-1.5
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-2
2.5
3
3.5
4
4.5
5
5.5
-0.5
-40
6
-15
60
No Load Input Current vs. Temperature
(EN = High)
(VIN = 3.6V; VOUT = 5V)
85
0.34
2.5
Supply Current (mA)
Supply Current (mA)
35
No Load Input Current vs. Input Voltage
3
VOUT = 18V
2
VOUT = 9V
1
VOUT = 12V
VOUT = 5V
0.5
0
2.5
3
3.5
4
4.5
Input Voltage (V)
6
10
Temperature (°°C)
Input Voltage (V)
1.5
1000
0.5
VIN = 4.2V
1
100
Output Voltage Error vs. Temperature
(VOUT = 12V)
2
10
Output Current (mA)
Line Regulation
1.5
VIN = 4.5V
VIN = 5.5V
1
Output Error (%)
Efficiency (%)
VIN = 4.5V
VIN = 5.5V
85
5
5.5
6
0.33
0.32
0.31
0.3
0.29
0.28
0.27
0.26
0.25
-40
-15
10
35
Temperature (°°C)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
60
85
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Typical Characteristics
AC Output Ripple vs. Output Current
Output Ripple
(VOUT = 9V)
(VIN = 3.6V; VOUT = 15V; IOUT = 150mA; L = 1.2µH)
VIN = 2.7V
50
VIN = 3.0V
Output Voltage
(top) (V)
60
VIN = 5.5V
40
VIN = 3.6V
30
VIN = 4.2V
20
10
0
0
50
100
150
200
250
15.1
12
15.05
10
15
8
14.95
6
14.9
4
14.85
2
14.8
0
14.75
-2
14.7
-4
300
Output Current (mA)
Output Ripple
Load Transient Response
(VIN = 3.6V; VOUT = 5V; IOUT = 0mA to 600mA)
3.5
2.5
14.95
2
14.9
1.5
14.85
1
14.8
0.5
14.75
14.7
Inductor Current
(bottom) (A)
15
Output Voltage
(top) (V)
3
5.2
7
5
6
4.8
4.4
4
3
0mA
4.2
2
4
1
0
3.8
0
-0.5
3.6
-1
Time (200ns/div)
Time (20µs/div)
Load Transient Response
(VIN = 3.6V; VOUT = 12V; IOUT = 0mA to 200mA)
4.95
5
4.9
4.85
360mA
120mA
4
3
4.8
2
4.75
1
4.7
0
4.65
-1
Time (20µs/div)
12.4
7
12.2
6
12
5
11.8
4
11.6
11.4
200mA
0mA
3
2
11.2
1
11
0
10.8
-1
Output Current (A) (middle)
Inductor Current (A) (bottom)
6
Output Current (A) (middle)
Inductor Current (A) (bottom)
7
5
Output Voltage
(top) (V)
Load Transient Response
(VIN = 3.6V; VOUT = 5V; IOUT = 120mA to 360mA)
5.05
Output Voltage
(top) (V)
5
600mA
4.6
Output Current (A) (middle)
Inductor Current (A) (bottom)
15.1
Output Voltage
(top) (V)
Time (500ns/div)
(VIN = 3.6V; VOUT = 15V; No Load; L = 1.2µH)
15.05
Inductor Current
(bottom) (A)
Output Voltage (mV)
70
Time (20µs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
7
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Load Transient Response
Line Response
(VIN = 3.6V; VOUT = 12V; IOUT = 40 to 120mA)
(VOUT = 15V @ 100mA)
6
12
5
11.8
4
120mA
11.6
11.4
3
2
40mA
11.2
1
11
0
10.8
-1
Output Voltage
(top) (V)
7
12.2
15.5
7.2
15.25
6.6
15
6
14.75
5.4
14.5
4.8
14.25
4.2
14
3.6
13.75
Input Voltage
(bottom) (V)
12.4
Output Current (middle) (A)
Inductor Current (bottom) (A)
Output Voltage
(top) (V)
Typical Characteristics
3
13.5
2.4
Time (20µs/div)
Time (100µs/div)
Line Response
P-Channel RDS(ON) vs. Input Voltage
5.4
7.2
300
5.2
6.6
280
4.8
5.4
4.6
4.8
4.4
4.2
4.2
3.6
4
100°C
240
220
200
180
160
25°C
140
3
3.8
120°C
260
RDS(ON) (mΩ
Ω)
6
5
Input Voltage
(bottom) (V)
Output Voltage
(top) (V)
(VOUT = 5V @ 100mA)
85°C
120
100
2.4
2.5
3
Time (100µs/div)
3.5
4
4.5
5
5.5
6
Input Voltage (V)
Soft Start
N-Channel RDS(ON) vs. Input Voltage
(VIN = 3.6V; CIN = 2.2µF; IOUT = 100mA; VOUT = 15V)
120°C
90
100°C
80
70
60
85°C
25°C
50
40
2.5
3
3.5
4
4.5
Input Voltage (V)
8
5
5.5
6
20
3.5
15
10
3
2.5
1.04V
5
2
0
1.5
-5
1
-10
0.5
-15
0
-20
-0.5
Time (500µs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
Input Current
(bottom) (A)
RDS(ON) (mΩ
Ω)
100
Enable Voltage (middle) (V)
Output Voltage (top) (V)
110
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Typical Characteristics
Soft Start
8
1.75
6
1.5
4
1.25
1.04V
2
1
0
0.75
-2
0.5
-4
0.25
-6
0
-8
-0.25
Input Current
(bottom) (A)
Output Voltage (top) (V)
Enable Voltage (middle) (V)
(VIN = 3.6V; CIN = 2.2µF; IOUT = 100mA; VOUT = 5V)
Time (500µs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
9
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Functional Block Diagram
VIN
LIN
VP
Soft-Start
Timer
EN/SET
SW
Control
FB1
VREF1
Output
Select
VREF2
FB2
SEL
GND
Functional Description
The AAT1210 consists of a DC/DC boost (step-up) controller, an integrated slew rate controlled input disconnect MOSFET switch, and a MOSFET power switch. A
high voltage rectifier, power inductor, capacitors and
resistor divider network are required to implement a DC/
DC boost converter. The minimum output voltage must
be 0.5V above the input voltage and the maximum output voltage is 18V. The operating input voltage range is
2.7V to 5.5V.
Control Loop
The AAT1210 provides the benefits of current mode control with a simple hysteretic feedback loop. The device
maintains exceptional DC regulation, transient response,
and cycle-by-cycle current limit without additional compensation components.
The AAT1210 modulates the power MOSFET switching
current in response to changes in output voltage. This
10
PGND
allows the voltage loop to directly program the required
inductor current in response to changes in the output
load.
The switching cycle initiates when the N-channel MOSFET
is turned ON and current ramps up in the inductor. The
ON interval is terminated when the inductor current
reaches the programmed peak current level. During the
OFF interval, the input current decays until the lower
threshold, or zero inductor current, is reached. The lower
current is equal to the peak current minus a preset hysteresis threshold, which determines the inductor ripple
current. The peak current is adjusted by the controller
until the output current requirement is met.
The magnitude of the feedback error signal determines
the average input current. The AAT1210 controller implements a programmed current source connected to the
output capacitor and load resistor. There is no right-half
plane zero, and loop stability is achieved with no additional compensation components.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Increased load current results in a drop in the output
feedback voltage (FB1 or FB2) sensed through the feedback resistors (R1, R2, R3 in Figure 2). The controller
responds by increasing the peak inductor current, resulting in higher average current in the inductor. Alternatively,
decreased output load results in an increase in the output feedback voltage.
The controller responds by
decreasing the peak inductor current, resulting in lower
average current in the inductor.
At light load, the inductor OFF interval current goes
below zero, which terminates the off period, and the
boost converter enters discontinuous mode operation.
Further reduction in the load results in a corresponding
reduction in the switching frequency. The AAT1210 provides optimized light load operation which reduces
switching losses and maintains the highest possible efficiency at light load.
The AAT1210 switching frequency varies with changes in
the input voltage, output voltage, and inductor size.
Once the boost converter has reached continuous mode,
further increases in the output load will not significantly
change the operating frequency and constant ripple current in the boost inductor is maintained.
Output Voltage Programming
The FB reference voltage is determined by the logic state
of the SEL pin. The output voltage is programmed
through a resistor divider network (R1, R2, R3) from the
positive output terminal to FB1/FB2 pins to ground.
Pulling the SEL pin high activates the FB1 pin which
maintains a 1.2V reference voltage, while the FB2 reference is disabled. Pulling the SEL pin low activates the
FB2 pin which maintains a 0.6V reference, while the FB1
reference is disabled. The FB1 and FB2 pins may be tied
together when a static DC output voltage is desired.
Toggling the SEL pin programs the output voltage
between two distinct output voltages across a 2.0X
range (maximum). With FB1, FB2 tied together, the output voltage toggles between two voltages with a 2.0X
scaling factor. An additional resistor between FB1 and
FB2 pins allows toggling between two voltages with a
<2.0X scaling factor.
Alternatively, the output voltage may be dynamically
programmed to any of 16 voltage levels using the
S2Cwire serial digital input. The single-wire S2Cwire
interface provides high-speed output voltage program-
mability across a 2.0X output voltage range. S2Cwire
functionality is enabled by pulling the SEL pin low and
providing S2Cwire digital clock input to the EN/SET pin
which sets the FB2 voltage level from 0.6V to 1.2V.
Table 6 details the FB2 reference voltage versus S2Cwire
rising clock edges.
Soft Start / Enable
The input disconnect switch is activated when a valid
input voltage is present and the EN/SET pin is pulled
high. The slew rate control on the P-channel MOSFET
ensures minimal inrush current as the output voltage is
charged to the input voltage, prior to switching of the
N-channel power MOSFET. Monotonic turn-on is guaranteed by the integrated soft-start circuitry.
Soft-start time of approximately 2.5ms is internally programmed to minimize inrush current and eliminate output voltage overshoot across the full input voltage range
under all loading conditions.
Some applications may require the output to be active
when a valid input voltage is present. In these cases,
add a 10kΩ resistor between the VIN, VP, and EN/SET
pins to avoid startup issues.
Current Limit and
Over-Temperature Protection
The switching of the N-channel MOSFET terminates if
the current limit of 3.0A (minimum) is exceeded. This
minimizes power dissipation and component stresses
under overload and short-circuit conditions. Switching
resumes when the current decays below the current
limit.
Thermal protection disables the AAT1210 if internal
power dissipation becomes excessive. Thermal protection disables both the N-channel and P-channel MOSFETs.
The junction over-temperature threshold is 140°C with
15°C of hysteresis. The output voltage automatically
recovers when the over-temperature or over-current
fault condition is removed.
Under-Voltage Lockout
Internal bias of all circuits is controlled via the VIN input.
Under-voltage lockout (UVLO) guarantees sufficient VIN
bias and proper operation of all internal circuitry prior to
activation.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
11
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Applications Information
Actual case temperature may vary and depends on the
boost converter efficiency and the system thermal
design; including, but not limited to airflow, local heat
sources, etc. Additional derating may apply.
Output Current and Power Capability
The AAT1210 boost converter provides a high voltage,
high current, regulated DC output voltage from a low
voltage DC input. The operating input voltage range is
2.7 to 5.5V.
Selecting the Output Diode
To ensure minimum forward voltage drop and no recovery, a high voltage Schottky diode is considered the best
choice for use with the AAT1210 boost converter. The
AAT1210 output diode is sized to maintain acceptable
efficiency and reasonable operating junction temperature under full load operating conditions. Forward voltage (VF) and package thermal resistance (JA) are the
dominant factors to consider in selecting a diode. The
diode’s published current rating may not reflect actual
operating conditions and should be used only as a comparative measure between similarly rated devices. 20V
rated Schottky diodes are recommended for outputs less
than 15V, while 30V rated Schottky diodes are recommended for outputs greater than 15V.
Figure 1 details the output current and power capability
of the AAT1210 for output voltages from 5V to 18V with
DC input of 2.7V, 3.6V and 4.5V. The maximum output
current/power curves are based on +50°C case temperature rise over ambient using the TDFN34-16 package. Ambient temperature at 25°C, natural convection is
assumed. Up to 1.3A of output current is possible with
4.5V input voltage. As shown in Figure 1, the output
capability is somewhat reduced at higher output voltage
and reduced input voltage.
The AAT1210 schematic and PCB layout are provided in
Figures 2, 6, and 7. The PCB layout includes a small 1
ounce copper power plane on top and bottom layers
which is tied to the paddle of the TDFN34-16 package.
The top plane is soldered directly to the paddle, and tied
to the bottom layer with plated through vias. Details of
the PCB layout are provided in Figures 6, 7, and 8.
The switching period is divided between ON and OFF
time intervals.
1
= TON + TOFF
FS
AAT1210 Boost Converter Maximum Output Capability
7
1200
6
VIN = 4.5V
1000
VIN = 3.6V
800
5
Output Current
Output Power
4
600
3
400
2
200
Maximum Output Power (W)
Maximum Output Current (mA)
1400
1
VIN = 2.7V
0
0
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Output Voltage (V)
Figure 1: Maximum Output Power Vs. Output Voltage for TC(RISE) = +50ºC
(assumes TDFN34-16 paddle heatsinking; see Figures 6, 7, and 8).
12
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
D1 Schottky
L1
0.47μH
9V at 300mA
5V at 600mA
VIN: 2.7V to 5.5V
R4
U1
1
2
3
4
5
6
7
8
R1
36.5k
C2
10μF
10V
R2
549
R3
4.99k
16
15
14
13
12
11
10
9
LIN
VP
LIN
VP
FB1 EN/SET
FB2
SEL
GND
VIN
PGND N/C
PGND
SW
PGND
SW
AAT1210_TDFN34-16
JP1
10K
1
2
3
Enable
JP2
C1
4.7μF
1
2
3
Select
U1 AAT1210 TDFN34-16
C1 6.3V 0603 4.7μF
C2 10V 0805 10μF
D1 30V 0.5A MBR0530T1 SOD-123
L1 0.47μH SD10-R47-R
R1 36.5k 0603
R2 549 0603
R3 4.99k 0603
R4 10k 0603
Figure 2: AAT1210 Demo Board Schematic.
D=
TON
TON + TOFF
= TON ⋅ FS
The maximum duty cycle can be estimated from the
relationship for a continuous mode boost converter.
Maximum duty cycle (DMAX) is the duty cycle at minimum
input voltage (VIN(MIN)).
DMAX =
VOUT - VIN(MIN)
VOUT
The average diode current during the OFF time can be
estimated.
IAVG(OFF) =
The following curves show the VF characteristics for different Schottky diodes (100°C case). The VF of the
Schottky diode can be estimated from the average current during the off time.
10000
Forward Current (mA)
During the ON time, the N-channel power MOSFET is
conducting and storing energy in the boost inductor.
During the OFF time, the N-channel power MOSFET is
not conducting. Stored energy is transferred from the
input supply and boost inductor to the output load
through the output diode. Duty cycle is defined as the
ON time divided by the total switching interval.
B340LA
MBR0530
1000
ZHCS350
100
BAT42W
10
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
Forward Voltage (V)
Figure 3: Forward Voltage vs. Forward Current
for Various Schottky Diodes.
The average diode current is equal to the output current.
IAVG(TOT) = IOUT
IOUT
1 - DMAX
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
13
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
PLOSS_DIODE = IAVG · VF
= IOUT · VF
Diode junction temperature can be estimated.
TJ = TAMB + ΘJA · PLOSS_DIODE
The junction temperature should be maintained below
110ºC, but may vary depending on application and/or
system guidelines. The diode JA can be minimized with
additional PCB area on the cathode. PCB heatsinking the
anode may degrade EMI performance.
The reverse leakage current of the rectifier must be considered to maintain low quiescent (input) current and
high efficiency under light load. The rectifier reverse current increases dramatically at high temperatures.
Additional considerations may apply to satisfy short circuit conditions. A short circuit across the output terminals results in high currents through the inductor and
output diode. The output diode must be sized to prevent
damage and possible failure of the diode under short
circuit conditions. The inductor may saturate without
incurring damage.
When current limit of (3A minimum) is reached, switching of the low side N-channel MOSFET is disabled.
Although switching is disabled, DC current continues to
build to a level determined by the DC resistance in the
path of current flow. For portable applications, the
source resistance (RSOURCE) of the Li-ion battery pack is
between 100-300m and should also be considered.
ISHT-CKT(MAX) =
(VIN(MAX) - VF)
(RSOURCE + RDC + RDS(ON)IN)
The AAT1210 controller will generate an over-temperature (OT) event under extended short circuit conditions.
OT disables the high side P-channel MOSFET, which terminates current flow in the output diode. Current flow
continues when OT hysteresis (cool-down) is met. This
continues until the short circuit condition is removed. In
portable applications, the battery pack over-current protection may be enabled prior to an OT event.
14
The diode non-repetitive peak surge current (IFSM) rating
should be greater than ISHT_CKT(MAX) to ensure diode reliability under short circuit conditions. Typically, IFSM current is specified for conduction periods from 8-10ms. If
short circuit survivability is required, it is recommended
to verify ISHT_CKT(MAX) under actual operating conditions
across the expected operating temperature range.
Selecting the Boost Inductor
The AAT1210 controller utilizes hysteretic control and
the switching frequency varies with output load and
input voltage. The value of the inductor determines the
maximum switching frequency of the boost converter.
Increased output inductance decreases the switching
frequency, resulting in higher peak currents and increased
output voltage ripple. The required inductance increases
with increasing output voltage. The inductor is sized
from 0.47μH to 2.2μH for output voltages from 5V to
18V. This selection maintains high frequency switching
(up to 2MHz), low output ripple and minimum solution
size. A summary of recommended inductors and capacitors for 5V to 18V fixed outputs is provided in Table 2.
The physical size of the inductor may be reduced when
operating at greater than 2.7V input voltage and/or less
than maximum rated output power is desired (see Figure
1 for maximum output power estimate). Figure 4 provides the peak inductor current (IPEAK) versus output
power for different input voltage levels. The curves are
valid for all output voltages and assume the corresponding inductance value provided in Figure 4. The inductor
is selected to maintain IPEAK current less than the specified saturation current (ISAT).
Peak Inductor Current (mA)
The average output current multiplied by the forward
diode voltage determines the loss of the output diode.
3500
VIN = 3.6V
VIN = 2.7V
3000
2500
2000
VIN = 4.5V
1500
1000
500
0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
Output Power (W)
Figure 4: Peak Inductor Current (IPEAK)
vs. Output Power.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
7.0
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Manufacturer
Part Number
Rated Forward
Current (A)
Diodes, Inc.
ON Semi
Zetex
Central Semi
BAT42W
MBR0530T
ZHCS350
CMDSH2-3
0.2
0.5
0.35
0.2
Non-Repetitive
Peak Surge
Current (A)
Rated
Voltage (V)
Thermal
Resistance
(θJA, °C/W)
Case
4.0
5.5
4.2
1.0
30
30
40
30
500
206
330
500
SOD-123
SOD-123
SOD-523
SOD-323
Table 1: Typical Surface Mount Schottky Rectifiers for Various Output Levels.
VOUT
C1 (Input Capacitor)
C2 (Output Capacitor)
L1 (Boost Inductor)
5.0
9.0
12.0
15.0
18.0
4.7μF
4.7μF
4.7μF
4.7μF
4.7μF
10μF/6.3V, 10V
10μF/10V
10μF/16V
10μF/16V
4.7μF/25V
0.47μH
0.47μH
1.0/1.2μH
1.0/1.2μH
2.2μH
Table 2: Output Inductor and Capacitor Values Vs. Output Voltage
The RMS current flowing through the boost inductor is
equal to the DC plus AC ripple components. Under
worst-case RMS conditions, the current waveform is
critically continuous. The resulting RMS calculation yields
worst-case inductor loss. The RMS value should be compared against the manufacturer’s temperature rise, or
thermal derating, guidelines.
Shielded inductors provide decreased EMI and may be
required in noise sensitive applications. Unshielded chip
inductors provide significant space savings at a reduced
cost compared to shielded (wound and gapped) inductors. Chip-type inductors have increased winding resistance when compared to shielded, wound varieties.
Selecting DC/DC Boost Capacitors
IRMS =
IPEAK
3
In most cases, the inductor’s specified IRMS current will
be greater than the IRMS current required by the boost
inductor.
For a given inductor type, smaller inductor size leads to
an increase in DCR winding resistance and, in most
cases, increased thermal impedance. Winding resistance
degrades boost converter efficiency and increases the
inductor operating temperature.
PLOSS_INDUCTOR = IRMS · DCR
2
To ensure high reliability, the inductor temperature
should not exceed 100°C. Manufacturer’s recommendations should be consulted. In some cases, PCB heatsinking applied to the AAT1210 LIN node (non-switching)
can improve the inductor’s thermal capability. PCB heatsinking may degrade EMI performance when applied to
the SW node (switching) of the AAT1210.
Recommended input and output capacitors for output
voltages from 5V to 18V are provided in Table 4.
The high output ripple inherent in the boost converter
necessitates low impedance output filtering. Multi-layer
ceramic (MLC) capacitors provide small size and high
capacitance, low parasitic equivalent series resistance
(ESR) and equivalent series inductance (ESL), and are
well suited for use with the AAT1210 boost regulator.
MLC capacitors of type X7R or X5R are recommended to
ensure good capacitance stability over the full operating
temperature range.
The output capacitor is sized to maintain the output load
without significant voltage droop (VOUT) during the
power switch ON interval, when the output diode is not
conducting. A ceramic output capacitor from 4.7μF to
10μF is recommended. Output capacitors should be rated
from 10V to 25V, depending on the maximum desired
output voltage. Ceramic capacitors sized as small as
0603 are available which meet these requirements.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
15
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Manufacturer
Sumida
www.sumida.com
Murata
www.murata.com
Cooper
www.cooperet.com
Part Number
Inductance
(μH)
Max
DC ISAT
Current
(A)
Max
IRMS
Current
(A)
DCR
(mΩ)
Size
LxWxH
(mm)
Type
CDRH5D16-1R4
CDRH5D16-1R4
CDRH3D11/HP-1R5
CDRH3D11/HP-2R7
LQH55DNR47M03
LQH55DN1R0M03
LQH55DN1R5M03
LQH55DN2R2M03
SD3814-R47
SD3814-1R2
SD3814-2R2
SD10-R47-R
SD10-1R0-R
SD10-2R2-R
SD18-2R2-R
1.4
2.2
1.5
2.7
0.47
1.0
1.5
2.2
0.47
1.2
2.2
0.47
1
2.2
2.2
4.7
3.0
2.0
1.55
4.8
4.0
3.7
3.2
4.44
2.67
1.9
3.54
2.25
1.65
2.16
4.7
2.85
1.45
1.3
2.81
1.85
1.43
2.59
1.93
1.35
2.55
14.6
35.9
80
100
13
19
22
29
20
46
77
24.9
44.8
91.2
39.8
5.8x5.8x1.8
5.8x5.8x1.8
4.0x4.0x1.2
4.0x4.0x1.2
5.7x5.0x4.7
5.7x5.0x4.7
5.7x5.0x4.7
5.7x5.0x4.7
4.0x4.0x1.4
4.0x4.0x1.4
4.0x4.0x1.4
5.2x5.2x1.0
5.2x5.2x1.0
5.2x5.2x1.0
5.2x5.2x1.8
Shielded
Shielded
Shielded
Shielded
Non-Shielded
Non-Shielded
Non-Shielded
Non-Shielded
Shielded
Shielded
Shielded
Shielded
Shielded
Shielded
Shielded
Table 3: Recommended Inductors.
Manufacturer
Part Number
Value (μF)
Voltage
Rating (V)
Temp.
Co.
Case Size
Murata
www.murata.com
GRM188R60J475KEAD
GRM21BR61A475KA73L
GRM21BR61E475KA12L
GRM188R60J106ME47D
GRM21BR61A106KE19L
GRM219R61A106KE44D
GRM21BR61C106KE15L
4.7
4.7
4.7
10
10
10
10
6.3
10
25
6.3
10
10
16
X5R
X5R
X5R
X5R
X5R
X5R
X5R
0603
0805
0805
0603
0805
0805 (H = 0.85mm)
0805
Table 4: Recommended MLC Capacitors.
Minimum 6.3V rated ceramic capacitors are required at
the input. Ceramic capacitors sized as small as 0603 are
available which meet these requirements. Output capacitors should be rated from 6.3V to 25V, depending on the
maximum desired output voltage.
MLC capacitors exhibit significant capacitance reduction
with applied voltage. Output ripple measurements should
confirm that output voltage droop and converter stability
is acceptable. Voltage derating can minimize this factor,
but results may vary with package size and among specific manufacturers.
Output capacitor size can be estimated at a switching
frequency (FSW) of 500kHz (worst-case).
16
COUT =
IOUT · DMAX
FS · ΔVOUT
The boost converter input current flows during both ON
and OFF switching intervals. The input ripple current is
less than the output ripple and, as a result, less input
capacitance is required. A ceramic output capacitor from
4.7μF to 10μF is recommended. The voltage rating of
the capacitor must be greater than, or equal to, the
maximum operating output voltage. X5R ceramic capacitors are available in 6.3V, 10V, 16V and 25V rating.
Ceramic capacitors sized as small as 0603 are available
which meet these requirements.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Minimum 6.3V rated ceramic capacitors are required at
the input. Ceramic capacitors sized as small as 0603 are
available which meet these requirements.
Setting the Output Voltage
The minimum output voltage must be greater than the
specified maximum input voltage plus 0.5V margin to
maintain proper operation of the AAT1210 boost converter. The output voltage may be programmed through
a resistor divider network located from the output to FB1
and FB2 pins to ground. Pulling the SEL pin high activates the FB1 pin which maintains a 1.2V reference voltage, while the FB2 reference is disabled. Pulling the SEL
pin low activates the FB2 pin which maintains a 0.6V
reference, while the FB1 reference is disabled.
The AAT1210 output voltage can be programmed by one
of three methods. First, the output voltage can be static
by pulling the SEL logic pin either high or low. Second,
the output voltage can be dynamically adjusted between
two pre-set levels within a 2X operating range by toggling the SEL logic pin. Third, the output can be dynamically adjusted to any of 16 preset levels within a 2X
operating range using the integrated S2Cwire single wire
interface via the EN/SET pin. See Table 5 for static and
dynamic output voltage settings.
Table 5 provides details of resistor values for common
output voltages from 5V to 18V for SEL = High and SEL
= Low options. SEL = High corresponds to VOUT(1) and
SEL = Low corresponds to VOUT(2).
Option 1: Static Output Voltage
Most DC/DC boost converter applications require a
static (fixed) output voltage. If a static voltage is
desired, the FB1 pin should be connected directly to FB2
and a resistor between FB1 and FB2 pins is not
required.
A static output voltage can be configured by pulling the
SEL either high or low. SEL pin high activates the FB1
reference pin to 1.2V (nominal). Alternatively, the SEL
pin is pulled low to activate the FB2 reference at 0.6V
(nominal). Table 5 provides details of resistor values for
common output voltages from 5V to 18V for SEL = High
and SEL = Low options.
Option 2: Dynamic Voltage Control Using
SEL Pin
The output may be dynamically adjusted between two
output voltages by toggling the SEL logic pin. Output
voltages VOUT(1) and VOUT(2) correspond to the two output
references, FB1 and FB2. Pulling the SEL logic pin high
activates VOUT(1), while pulling the SEL logic pin low activates VOUT(2).
In addition, the ratio of output voltages VOUT(2)/VOUT(1) is
always less than 2.0, corresponding to a 2X (maximum)
programmable range.
Option 3: Dynamic Voltage Control Using
S2Cwire Interface
The output can be dynamically adjusted by the host
controller to any of 16 pre-set output voltage levels
using the integrated S2Cwire interface. The EN/SET pin
serves as the S2Cwire interface input. The SEL pin must
be pulled low when using the S2Cwire interface.
S2Cwire Serial Interface
Skyworks' S2Cwire serial interface is a proprietary highspeed single-wire interface. The S2Cwire interface
records rising edges of the EN/SET input and decodes
into 16 different states. Each state corresponds to a
voltage setting on the FB2 pin, as shown in Table 6.
S2Cwire Output Voltage Programming
The AAT1210 is programmed through the S2Cwire interface according to Table 6. The rising clock edges received
through the EN/SET pin determine the feedback reference and output voltage set-point. Upon power-up with
the SEL pin low and prior to S2Cwire programming, the
default feedback reference voltage is set to 0.6V.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
17
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
R3 = 4.99kΩ
VOUT(1)
(SEL = High)
VOUT(2)
(SEL = Low)
R1 (kΩ)
R2 (kΩ)
5.0V
6.0V
7.0V
8.0V
9.0V
10.0V
12.0V
15.0V
16.0V
18.0V
9.0V
10.0V
12.0V
15.0V
15.0V
16.0V
18.0V
15.0V
16.0V
18.0V
18.0V
5.0V
6.0V
7.0V
8.0V
9.0V
10.0V
12.0V
15.0V
16.0V
18.0V
5.0V
9.0V
10.0V
10.0V
12.0V
10.0V
10.0V
12.0V
12.0V
12.0V
15.0V
15.8
20.0
24.3
28.0
32.4
36.5
44.2
57.6
61.9
69.8
36.5
45.3
53.6
61.9
69.8
78.7
95.3
121
127
143
36.5
66.5
75
76.8
90.9
76.8
78.7
90.9
93.1
93.1
115
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.549
4.02
3.32
1.65
3.01
1.24
0.562
3.01
2.49
1.65
3.32
Table 5: SEL Pin Voltage Control Resistor Values
(1% resistor tolerance).
EN/SET
Rising
Edges
FB2
Reference
Voltage (V)
EN/SET
Rising
Edges
FB2
Reference
Voltage (V)
1
2
3
4
5
6
7
8
0.60 (Default)
0.64
0.68
0.72
0.76
0.80
0.84
0.88
9
10
11
12
13
14
15
16
0.92
0.96
1.00
1.04
1.08
1.12
1.16
1.20
S2Cwire Serial Interface Timing
The S2Cwire serial interface has flexible timing. Data can
be clocked-in at speeds up to 1MHz. After data has been
submitted, EN/SET is held high to latch the data for a
period TLAT. The output is subsequently changed to the
predetermined voltage. When EN/SET is set low for a time
greater than TOFF, the AAT1210 is disabled. When disabled,
the register is reset to the default value, which sets the
FB2 pin to 0.6V if EN is subsequently pulled high.
PCB Layout
Boost converter performance can be adversely affected by
poor layout. Possible impact includes high input and output voltage ripple, poor EMI performance, and reduced
operating efficiency. Every attempt should be made to
optimize the layout in order to minimize parasitic PCB
effects (stray resistance, capacitance, inductance) and
EMI coupling from the high frequency SW node.
A suggested PCB layout for the AAT1210 boost converter
is shown in Figures 6, 7, and 8. The following PCB layout
guidelines should be considered:
1.
2.
3.
4.
5.
6.
7.
Table 6: S2Cwire Voltage Control Settings
(SEL = Low).
18
Minimize the distance from Capacitor C1 and C2 negative terminal to the PGND pins. This is especially true
with output capacitor C2, which conducts high ripple
current from the output diode back to the PGND pins.
Place the feedback resistors close to the output terminals. Route the output pin directly to resistor R1 to
maintain good output regulation. R3 should be routed close to the output GND pin, but should not share
a significant return path with output capacitor C2.
Minimize the distance between L1 to D1 and switching pin SW; minimize the size of the PCB area connected to the SW pin.
Maintain a ground plane and connect to the IC PGND
pin(s) as well as the GND terminals of C1 and C2.
Consider additional PCB area on D1 cathode to
maximize heatsinking capability. This may be necessary when using a diode with a high VF and/or thermal resistance.
To maximize thermal capacity, connect the exposed
paddle to the top and bottom power planes using
plated through vias. Top and bottom planes should
not extend far beyond the TDFN34-16 package
boundary to minimize stray EMI.
To avoid problems at startup, add a 10k resistor
between the VIN, VP and EN/SET pins (R4). This is
critical in applications requiring immunity from input
noise during “hot plug” events, e.g. when plugged
into an active USB port.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
THI
TLO
TOFF
T LAT
EN/SET
1
2
n-1
0
Data Reg
n ≤ 16
n
0
Figure 5: S2Cwire Timing Diagram.
Figure 6: AAT1210 Evaluation Board
Top Side Layout.
Figure 7: AAT1210 Evaluation Board
Bottom Side Layout.
Figure 8: Exploded View of AAT1210 Evaluation Board
Top Side Layout Detailing Plated Through Vias.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
19
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Ordering Information
Package
Marking1
Part Number (Tape and Reel)2
TDFN34-16
VDXYY
AAT1210IRN-0.6-T1
Skyworks Green™ products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to Skyworks
Definition of Green™, document number
SQ04-0074.
Package Information3
TDFN34-16
3.000 ± 0.050
1.600 ± 0.050
Detail "A"
3.300 ± 0.050
4.000 ± 0.050
Index Area
0.350 ± 0.100
Top View
0.230 ± 0.050
Bottom View
C0.3
(4x)
0.050 ± 0.050
0.450 ± 0.050
0.850 MAX
Pin 1 Indicator
(optional)
0.229 ± 0.051
Side View
Detail "A"
All dimensions in millimeters.
1. XYY = assembly and date code.
2. Sample stock is generally held on part numbers listed in BOLD.
3. The leadless package family, which includes QFN, TQFN, DFN, TDFN and STDFN, has exposed copper (unplated) at the end of the lead terminals due to the manufacturing
process. A solder fillet at the exposed copper edge cannot be guaranteed and is not required to ensure a proper bottom solder connection.
20
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
DATA SHEET
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Copyright © 2012 Skyworks Solutions, Inc. All Rights Reserved.
Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by Skyworks as a
service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to update the materials or information and shall have no
responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes.
No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or information provided hereunder, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions of Sale.
THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A PARTICULAR
PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY DISCLAIMED. SKYWORKS DOES
NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM
THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury, death, physical or environmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper
use or sale.
Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for applications assistance, customer product
design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters.
Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and names are for
identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202049A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 12, 2012
21