Data Sheets - Skyworks Solutions, Inc.

EVALUATION BOARD DATA SHEET
EV159
Evaluation Board for the AAT2601/2601A
Total Power Solution for Portable Applications
Introduction
The AAT2601 and AAT2601A are members of Skyworks' Total Power Management IC (TPMIC™) product family; they
are completely integrated solutions ideal for portable systems, which contain:
• One Step-Down Buck Converter operating at a switching frequency of 1.5MHz, thus minimizing the size of external
components while keeping switching losses low and efficiency greater than 95%. They deliver 1.8V, 300mA output
to the Core supply.
• Five LDOs. The output voltages are programmable and can be enabled or disabled using the I2C interface, or enabled/
disabled by the respective EN pins.
▪ LDO1: 3.0V, 300mA output to power digital
▪ LDO2: 3.0V, 150mA output to power analog or PLL
▪ LDO3: 3.0V, 150mA output to power TCXO
▪ LDO4: 3.0V, 150mA for TX, 2.8V option available
▪ LDO5: 3.0V, 150mA for RX, 2.85V option available
▪ PSRR: [email protected]
▪ Noise: 50μVrms for LDO3, LDO4, and LDO5; the low noise operation makes LDO3-5 suitable for powering noisesensitive loads.
• One battery charger is a complete thermally regulated constant current/voltage linear charger ideal for single-cell
Li-Ion/Li-Polymer batteries which supports:
▪ Single-/Dual-input USB/AC Adapter, operates from 4.5V to 6V, with UVLO function
▪ Up to 1A current for fast charge set by external resistor, and programmable through I2C from 40% to 180% of
pre-set current
▪ Charge current termination programmable through I2C, default 5% of Fast Charge Current
▪ Automatic trickle charge for battery precondition (2.8V typ. cutoff), to maintain a safe charging environment
▪ Programmable on-chip charger timers to identify damaged cells and ensure that the cell is charged safely
▪ Temperature sense monitor the battery temperature and suspend the charging current when the battery temperature exceeds the limits
▪ Thermal regulation features an internal thermal feedback loop that reduces the charging current as necessary to
ensure the die temperature does not rise above the thermal regulation threshold of 115°C
▪ Reverse battery protection internal circuitry eliminates the need for series blocking diodes, reducing solution size
and cost as well as dropout voltage relative to convertional battery chargers
• Integrated load switches to select the power source from AC adapter or battery automatically
• Power-On pushbutton switch input (EN_KEY) and noise debounce circuit
• Adapter OK (ADPP) and Reset (RESET) Timer Outputs
• Battery Charger status output (STAT)
• Separate Enable pins for each output
• Low Standby Current: 170μA (typ.) with Buck (Core), LDO1 (PowerDigital), and LDO2 (PowerAnalog) active, no load
• Over-Current Protection
• Charging Over-Voltage VOVP Protection (4.3V typ.)
• Over-Temperature Protection
• TQFN-55-36 Package, 5x5mm
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202284A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 22, 2012
1
EVALUATION BOARD DATA SHEET
EV159
Evaluation Board for the AAT2601/2601A
Total Power Solution for Portable Applications
AAT2601/2601A Functional Block Diagram
SYSOUT
SYSOUT
LDO
500mΩ
100 mΩ
CHGIN
BAT
ADPP
ENBAT
Charger
Control
USE_USB
STAT
ISET
TS
CT
Ref
RESET
SDA
SCL
PVIN
UVLO
EN_TEST
I C
and
Enable
Control
2
EN_HOLD
EN_KEY
ON_KEY
LX
VIN
Ref
BUCK
OUTBUCK
Enable
PGND
EN2
EN3
VIN
REF
EN4
CNOISE
EN5
AVIN2
AVIN1
VIN
Ref
LDO1
LDO2
Enable
VIN
Ref
LDO3
Enable
VIN
Ref
LDO4
Enable
VIN
Ref
LDO5
Enable
Ref
VIN
Enable
AGND
OUT1
OUT2
OUT3
OUT4
OUT5
The Evaluation Board is fully assembled and tested with the AAT2601/2601A, which has the capability to charge a
single Li+ battery to 4.2V from an external USB or AC adapter, and deliver 1.8V/300mA to the processor core power
as well as 5 programmable-output LDOs to supply PowerDigital, PowerAnalog/PLL, TCXO, TX, and RX up to 300mA.
2
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202284A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 22, 2012
EVALUATION BOARD DATA SHEET
EV159
Evaluation Board for the AAT2601/2601A
Total Power Solution for Portable Applications
Battery Mode
If there is no USB/AC Adapter (CHGIN) input, when the battery voltage is above the UVLO_BAT (2.7V max.), the
SYSOUT and regulators are enabled by EN_KEY and/or EN_HOLD, then the system power SYSOUT will be supplied by
the BAT input through an internal power switch with 100mΩ RDS(ON) (typ.). The Buck converter and LDO1 will then start
up to power the load, and the RESET/ signal will go high after a timeout period to properly reset the loaded chipset.
USB/Wall Adapter Mode
When the USB/AC Adapter (CHGIN) input is present and above UVLO CHGIN threshold of 4.25V typ., the CHGIN will
supply a regulated 3.9V to SYSOUT, and the Buck and LDOs will power their outputs from the SYSOUT voltage if the
EN_KEY and/or EN_HOLD is enabled. If ENBAT is pulled low, then the BAT will be charged with a linear constant current/voltage in four battery charging phases:
• Preconditioning (Trickle) Charge: If the battery voltage is below the preconditioning voltage threshold VMIN (2.8V
typ.), then the battery charger initiates trickle charge mode and charges the battery at 10% of the programmed
constant current magnitude.
• Constant Current Charge: If the battery voltage is charged above VMIN, the battery charger begins constant-current
charging. The current level for this mode is programmed by using a resister from the ISET pin to ground. If it is
charged by USB, the USE_USB signal is high, then the charge current is reset to an internally set 100mA current
(and the SYSOUT would be supplied by BAT), until the microcontroller sends another I2C signal to change the charge
current level.
• Constant Voltage Charge: When the battery voltage reaches the regulation voltage VBAT-REG (4.2V typ.), the battery
charger will transition to constant-voltage mode, until the charge current has reduced to the end of charge termination current.
• Power Saving Mode: After the charge cycle is complete, the battery charger turns off the series pass device and
automatically goes into a power saving sleep mode, and block current in both directions to prevent the battery from
discharging through the battery charger.
While monitoring the charge cycle, the AAT2601/2601A utilize a charge safety timer to help identify damaged cells to
ensure the cell is charged safely. Three timeout periods of 1 hour for Trickle charge mode, 3 hours for Constant Current
Mode and 3 hours for Constant Voltage mode.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202284A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 22, 2012
3
EVALUATION BOARD DATA SHEET
EV159
Evaluation Board for the AAT2601/2601A
Total Power Solution for Portable Applications
Figure 1A: Top Side AAT2601/2601A Evaluation Board.
Figure 1B: Bottom Side AAT2601/2601A Evaluation Board.
4
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202284A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 22, 2012
EVALUATION BOARD DATA SHEET
EV159
Evaluation Board for the AAT2601/2601A
Total Power Solution for Portable Applications
Layout Guidelines
The following guidelines should be followed to ensure proper operation of the AAT2601/2601A:
1. The exposed pad (EP) must be reliably soldered to AGND. A large pad under the device is strongly recommended
for heat dissipation, it is recommended to connect this pad under the EP to GND layer through several VIA pads.
2. The Buck input and output traces, including LX-to-L1-to-C4-to-PGND trace loop and PVIN-to-C2-to-PGND trace loop
should be kept short, direct and wide to allow high current flow. Use many multi-layer VIA pads when connecting
traces which connect between layers.
3. Connect the CHGIN capacitor C1 to the CHGIN pin and AGND, Bat capacitor C3 to BAT pin and AGND as close as
possible to get good power filtering.
4. If the user needs to start up the system in USB mode (USE_USB = 1 and input current is limited to 100mA) without a battery present, then it is recommended to use three 10µF/10V capacitors at C2, C14, and C15 to slow the
supply ramp-up time. If enabling OUT2 and OUT3 during start-up, add 10nF capacitors at C16 and C17 to create
a small enable delay for LDO2 and LDO3. This prevents input supply droop with the 100mA current limitation in
the USB charge mode.
5. Connect the Sysout capacitors C2 and C14 to the SYSOUT pin and AGND, PVIN capacitor C15 to PVIN pin and AGND
as close as possible to get good power filtering.
6. Keep the switching node LX pad short but wide for current, away from the sensitive OUTBUCK node.
7. To avoid high AGND noise affecting the internal accurate reference circuit, it is recommended that PGND connect
to AGND plane at a single point under the device and to the top/bottom side AGND plane.
8. Charger Timeout Capacitor C12 to CT pin, C13 to CNOISE pin, C5 to OUT5, C6 to OUT4, C7 to OUT3, C8 to OUT2,
C9 to OUT1 as close as possible, and connect the capacitor alternative pad to AGND plane.
Figure 2: AAT2601/2601A Evaluation Board
PCB Top Layer.
Figure 3: AAT2601/2601A Evaluation Board
PCB Mid Layer 1.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202284A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 22, 2012
5
EVALUATION BOARD DATA SHEET
EV159
Evaluation Board for the AAT2601/2601A
Total Power Solution for Portable Applications
Figure 4: AAT2601/2601A Evaluation Board
PCB Mid Layer 2.
R30
D1
1K
STAT
STAT
BAT_ID
R32
R1
10K
0
USE_USB
VDIG
PON_N
TP11
Sysout
J1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
1
VANA
ACOK_N
VTCXO
EXT PWR
3
2
J12
INT/EXT PWR
TX_EN
PWR_HOLD
J10
R31
1
10K
2
R33
3
RESET_N
4
10K
SDA
SCL
GND
DATA HEADER
VCORE
Header
13X2H
Coptional
.01µF
TP2
CHGIN
CHG_EN
J11
Figure 5: AAT2601/2601A Evaluation Board
PCB Bottom Layer.
VBATT
J3
VBATT
U1
3
CHGIN
2
28
1
C1
10µF
VBUS/VCHG
C16
10nF
VBATT
30
ENBAT
R3
0
29
USE_USB
R4
0
35
R6
0
SDA
SCL
R7
3
DNP
2
1
R5
100K
R8
J2
SDA
SCL
TCXO_EN
100K
VTX
0
36
C17
10nF
VDIG
VRX
1
3
VBUS
VCHG
R9
0
R10
0
R12
0
R14
0
5
6
7
8
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
BAT_ID
Q1
CMPT3904
PWR_ON
RX_EN
HF_PWR
C10
0.1µF
Header
13X2H
C11
R17
0.1µF
10K
BAT
BAT
EN_KEY
EN_HOLD
EN_TEST
EN2
EN3
EN4
EN5
C12
0.1µF
33
CT
32
ISET
31
TS
R18
1.24K
PMU_Via
R38 0
R39 0
VCORE VRX
BAT
27
26
SYSOUT
SYSOUT
AVIN1
AVIN2
PVIN
25
OUT1
OUT2
OUT3
OUT4
OUT5
LX
OUTBUCK
15
24
14
11
22
TP10
Sysout
Sysout
R34 0
R35 0
R36 0
12
10
9
20
19
CNOISE
17
AGND
PGND
GND_SLUG
16
C15
10µF
VDIG
R19
10K
VDIG
R20
100K
VDIG
R21
100K
J13
SW1
PWR_ON
CHGIN
R25
100K
J17
HF_PWR
TX_EN
VDIG
R24
10K
3
4
18
34
R26
100K
R27
100K
J19
ACOK_N
0
PON_N
R15
0
RESET_N
R16
0
STAT
C4
4.7µF
C5
4.7µF
C6
4.7µF
C7
4.7µF
R29
10K
21
R37
10K
37
ACOK_N RESET_N
TP3
TP5
C13
0.01µF
VDIG
VCORE
STAT
TP6
2
ANA_EN
TP7
GND
TP8
GND
TP12
GND
J20
1
1
1
2
PWR_HOLD 2
USE_USB 2
3
3
3
3
USE_USB
CHG_EN
PWR_HOLD
0
R13
CHGIN
J18
HF_PWR
R11
3
TCXO_EN
1
CHG_EN
2
Figure 6: AAT2601/2601A Evaluation Board Schematic.
6
J9
OUT1
buckout
1
ANA_EN
2
3
RX_EN
BAT
J8
OUT2
J16
1
TCXO_EN
2
3
J7
OUT3
R23
100K
J15
1
TX_EN
2
VTX VTCXO VANA VDIG
J6
OUT4
VDIG
R22
100K
J14
1
RX_EN
PWR_ON
J5
OUT5
LX
PON_N
TP4
BAT
J4
BUCK
C2
10µF
L1 3.3µH
23
ADPP
ON-KEY
RESET
STAT
C3
10µF
C14
10µF
OUT1
OUT2
OUT3
OUT4
OUT5
13
TP9
4
5
ANA_EN
VBATT
2
CHGIN
R2
TP1
VBATT
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202284A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 22, 2012
C8
4.7µF
C9
22µF
EVALUATION BOARD DATA SHEET
EV159
Evaluation Board for the AAT2601/2601A
Total Power Solution for Portable Applications
Specification
Input Voltage
USB/Wall Adapter
Input Voltage
Battery Input Voltage
Battery Charger
Output Charge
Voltage Regulation
Preconditioning
Voltage Threshold
Constant-Current
Mode Charge Current
Buck Converter
Buck Output Voltage
Buck Output Current
LDOs
Symbol
Conditions
Min
VIN
VBAT
VBAT-REG
BAT discharge
0°C ≤ TA ≤ +70°C
VMIN
ICH_CC
VOUT
IOUT
LDO1 Output Voltage
VOUT
LDO1 Output Current
LDO2, LDO3, LDO4,
LDO5 Output Voltage
LDO2, LDO3, LDO4,
LDO5 Output Current
IOUT
VOUT
IOUT
RISET = 1.24KΩ, USE_USB = Low, I C ISET Code = 000
(default), VBAT = 3.6V
2
IOUT = 0 to 300mA; VBAT = 3V~4.2V, VCHGIN = 4.5V~6.0V
0~300mA load, VBAT = 3.3V~4.2V, I2C LDOx Code = 00
(default)
Typ
Max
Units
4.5
6
V
3
4.2
V
5.158
4.200
4.242
V
2.6
2.8
3.0
V
740
820
900
mA
1.71
300
1.80
1.89
V
mA
2.91
3.00
3.09
300
0~150mA load, VBAT = 3.3V~4.2V, I2C LDOx Code = 00
(default)
2.91
V
mA
3.00
3.09
150
V
mA
Table 1: AAT2601/2601A Evaluation Board Specifications.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202284A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 22, 2012
7
EVALUATION BOARD DATA SHEET
EV159
Evaluation Board for the AAT2601/2601A
Total Power Solution for Portable Applications
Jumper
J3_Vbat
J4_Vcore
J5_OUT5
J6_OUT4
J7_OUT3
J8_OUT2
J9_OUT1
J11
J12_PWR_ON
J13_RX_EN
J14_TX_EN
J15_TCXO_EN
J16_ANA_EN
J17_HF_PWR
J18_PWR_HOLD
J19_USE_USB
J20_CHG_EN
Shunt State
Function
None
Installed
None
Installed
None
Installed
None
Installed
None
Installed
None
Installed
None
Installed
1,2 installed
2,3 installed
1,2 installed
2,3 installed
1,2 installed
2,3 installed
1,2 installed
2,3 installed
1,2 installed
2,3 installed
1,2 installed
2,3 installed
1,2 installed
2,3 installed
1,2 installed
2,3 installed
1,2 installed
2,3 installed
1,2 installed
2,3 installed
Disconnect the external battery (VBATT)
Connect with external battery (VBATT) through J2_19,21
Disconnect the buck output voltage to VCORE load
Connect with VCORE load through J1_26
Disconnect the OUT5 output voltage to VRX load
Connect with OUT5 load VRX through J2_11
Disconnect the OUT4 output voltage to VTX load
Connect with OUT4 load VTX through J2_7
Disconnect the OUT3 output voltage to VTCXO load
Connect with OUT3 load VTCXO through J1_10
Disconnect the OUT2 output voltage to VANA load
Connect with OUT2 load VANA through J1_6
Disconnect the OUT1 output voltage to VDIG load
Connect with OUT1 load VDIG through J1_25
Select CHGIN input voltage from VBUS (J2_15,17)
Select CHGIN input voltage from VCHG (J2_23,25)
Pull EN_KEY to low, enable the system
Pull EN_KEY to high by internal pull-up resister
Pull RX_EN EN5 to high, Enable OUT5 output
Pull RX_EN EN5 to low, Disable OUT5 output
Pull TX_EN EN4 to high, Enable OUT4 output
Pull TX_EN EN4 to low, Disable OUT4 output
Pull TCXO_EN EN3 to high, Enable OUT3 output
Pull TCXO_EN EN3 to low, Disable OUT3 output
Pull ANA_EN EN2 to high, Enable OUT2 output
Pull ANA_EN EN2 to low, Disable OUT2 output
Pull HF_PWR EN_TEST to high, Enable the system
Pull HF_PWR EN_TEST to low
Pull PWR_HOLD EN_HOLD to high, Enable the system
Pull PWR_HOLD EN_HOLD to low
Pull USE_USB to high, Enable the USB Charger
Pull USE_USB to low, Disable the USB Charger
Pull the CHGIN ENBAT to high, Disable battery Charger
Pull the CHGIN ENBAT to low, Enable battery Charger
Table 2: Shunt Jumper Selection.
J1_1
J1_3
J1_2
J1_4
J2_1
SDA
J2_2
J2_3
SCL
J2_4
J1_5
STAT_N
J1_6
VANA
J1_7
J1_9
J1_8
ACOK_N
J1_10
VTCXO
J2_5
TCXO_EN
J2_6
J2_7
VTX
J2_8
J2_9
ANA_EN
J2_10
J1_11
AGND
J1_12
AGND
J2_11
VRX
J2_12
J1_13
J1_14
VCORE
J1_15
USE_USB
J1_16
J2_13
AGND
J2_14
J2_15
VBUS
J2_16
J1_17
J1_19
J1_18
TX_EN
J1_20
PWR_HOLD
J2_17
VBATT
J2_18
J2_19
VCHG
J2_20
PWR_ON
J1_21
PON_N
J1_22
AGND
J1_23
VDIG
J1_24
CHG_EN
J1_26
VCORE
J2_21
J2_23
J2_25
J2_22
RX_EN
J2_24
HF_PWR
J2_26
AGND
Table 3: Connector Pins Assignment.
8
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202284A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 22, 2012
J1_25
EVALUATION BOARD DATA SHEET
EV159
Evaluation Board for the AAT2601/2601A
Total Power Solution for Portable Applications
TP1
VBATT
TP8
AGND
TP2
CHGIN
TP8_PGND
PGND
TP3
ADPP
TP9_LX
LX
TP4
ON-KEY
TP10_sysout
SYSOUT
TP5
RESET
TP6
STAT
TP7
AGND
Table 4: Test Point (TP) Assignment.
Test Equipment
1.
2.
3.
4.
5.
6.
8.0V 5.0A laboratory DC power supply: Agilent E3648A or equivalent
DC Electronic Load: Agilent N3301A
6 1/2 Digit Multi-meter: Agilent 34401A or equivalent
4 Channel Digital Oscilloscope: Tektronix TDS3034B (300MHz, 2.5GS/s) or equivalent
Waveform Generator: Agilent 33250A or equivalent
Source Meter: Keithley 2400 (to simulate battery)
Setup and Test (see connection diagram in Figure 7)
A: Load and Line Regulation
1. Apply a DC power supply (DC1 in wall adapter mode, or DC2 in battery mode) and DC voltmeter across the input
voltage terminals.
2. Apply a DC load and DC voltmeter to the respective output terminals.
3. Before turning on the board, set the shunt jumper to the correct position as illustrated in Figure 7 and Table 2 (J3,
J4, J5, J6, J7, J8, and J9 installed; J11, J19, and J20 2-3 installed; J12, J13, J14, J15, J16, J17, and J18 1-2
installed), to properly start up the board.
4. Vary the load from 0 to 300mA for Buck and LDO1, 0 to 150mA for LDO2, LDO3, LDO4, LDO5, and vary the battery
voltage of DC2 from 3.3V to 4.2V or of wall adapter DC1 from 4.5V to 6.0V while monitoring the output voltage.
5. The output voltage measured at the respective output terminals should not vary by more than ±3% of the nominal
voltage.
B: Buck Ripple Voltage and Shutdown Current
1. Apply a DC power supply (DC1 5V in wall adapter mode, or DC2 3.6V in battery mode) at input terminals. Set the
Buck output current between 0 and 300mA, and measure the buck output ripple voltage; the measurement should
be less than ±20mVpp.
2. Apply a DC2 battery voltage 4.2V at VIN; set EN_TEST, EN_HOLD, EN2, EN3, EN4, EN5 to AGND, floating EN_KEY
(J3, J4, J5, J6, J7, J8, and J9 installed; J11, J13, J14, J15, J16, J17, J18, J19, and J20 2-3 installed; J12 uninstalled), then the board would work in battery shutdown mode. Measure the shutdown supply current. The supply
current will be less than 10μA.
C: Short-Circuit and Over-temperature Protection
1. Raise the input voltage (DC1 6V in wall adapter mode, or DC2 4.2V in battery mode).
2. Apply a short from each output to GND at the evaluation board terminals.
3. Remove the short and verify that the output returns to its initial value
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202284A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 22, 2012
9
EVALUATION BOARD DATA SHEET
EV159
Evaluation Board for the AAT2601/2601A
Total Power Solution for Portable Applications
D: Enable Supply Outputs
1. Short the Enable pins to GND by shunting the EN2, EN3, EN4, or EN5 (J16, J15, J14, or J13 2-3 installed). The
respective outputs OUT2, OUT3, OUT4, or OUT5 should decay to zero. Set EN_TEST, EN_HOLD, EN2, EN3, EN4,
EN5 to AGND, float EN_KEY (J13, J14, J15, J16, J17, and J18 2-3 installed; J12 uninstalled); then VCORE and OUT1
will decay to zero.
2. Set EN_KEY to low, and EN_HOLD to high (J12, J18 1-2 installed); VCORE and OUT1 should turn on to the default
value. Pull high EN2, EN3, EN4, EN5 by shunts (J16, J15, J14, or J13 1-2 installed) separately; the respective outputs OUT2, OUT3, OUT4,or OUT5 should turn-on to the default value.
3. When USE_USB is high, the CHGIN input current is limited to 100mA. To minimize inrush current, the VCORE and
OUT1 outputs can be turned on simultaneously; however, OUT2 requires a delay, so a 10nF capacitor has been
added to the EN2 pin to delay LDO2 for a very short time.
E: Charge Current Curve
1. Apply a wall adapter input voltage DC1 and DC voltmeter across the CHGIN voltage terminals (TP2 to TP8).
2. Apply a battery voltage DC2 (use the SourceMeter 2400 to simulate the battery) at the BAT_IN terminals (TP1 to
TP8).
3. Before turning on the board, set the shunt jumper as illustrated in Figure 7 and Table 2 (J3, J4, J5, J6, J7, J8, and
J9 installed; J11, J19, and J20 2-3 installed; J12, J13, J14, J15, J16, J17, and J18 1-2 installed) to properly start
up the board and charge the battery.
4. Vary the battery voltage DC2 from 2.7V to 4.2V; measure the charge current for each charging mode (trickle
charge, constant current charge).
5. Vary the wall adapter voltage DC1 from 4.5V to 6.0V; repeat the measurement in Step 4.
6. If the IC temperature is too hot (>115°C typ.), the internal thermal regulation will lower the charging current to a
safe level.
F: Charger Safety Timer
1. Apply the wall adapter input DC1, battery input DC2 voltages at the respective input terminals (DC1:TP2 to TP8;
DC2:TP1 to TP8), and set the shunt jumper to correctly start up and charge (J3, J4, J5, J6, J7, J8, and J9 installed;
J11, J19, and J20 2-3 installed; J12, J13, J14, J15, J16, J17, and J18 1-2 installed).
2. Adjust the battery voltage DC2 to 2.7V (simulated by Source Meter 2400); the charger should operate in trickle
charge mode. Continue to operate in this mode and note when the charger stops working. The charge cycle will
terminate after 1 hour if the cell is not charged to the preconditioning threshold (2.8V typ.).
3. Reset ENBAT (J20 1-2 installed; then 1-2 uninstalled, 2-3 installed), and adjust the DC2 to 3.6V (simulated by
Source Meter 2400), and repeat this test as above in constant current mode. The charge cycle will terminate after
3 hours if the cell is not charged to the charge voltage regulation level (4.2V typ.).
4. Reset ENBAT (J20 1-2 installed; then 1-2 uninstalled, 2-3 installed), and connect a fully charged Li+ battery in
parallel with a power 40Ω/2W resister at the BAT_IN terminals (TP1 to TP8); repeat the above test in constant
voltage mode. The charge cycle will terminate after 3 hours if the cell is not charged to the termination threshold
current (default 5% of ICH_CC typ.).
G: External Battery Over-Temperature Protection
1. Apply the wall adapter input DC1 and battery input DC2 voltages at the respective input terminals (DC1: TP2 to TP8;
DC2: TP1 to TP8) and set the shunt jumper (J3, J4, J5, J6, J7, J8, and J9 installed; J11, J19, and J20 2-3 installed;
J12, J13, J14, J15, J16, J17, and J18 1-2 installed) to correctly start up and charge the simulated or real battery.
2. Adjust the resistor value connected between the TS pin (J1_11, 13) and GND (initial value 10KΩ) to simulate NTC
operation in battery pack. Monitor the voltage of TS (J1_11, 13) to GND; charging will suspend if the TS voltage is
below the TS hot temperature fault threshold (328mV typ.) or above the TS cold temperature fault threshold (2.42V
typ.).
10
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202284A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 22, 2012
EVALUATION BOARD DATA SHEET
EV159
Evaluation Board for the AAT2601/2601A
Total Power Solution for Portable Applications
Figure 7: AAT2601/2601A Connection Diagram.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202284A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 22, 2012
11
EVALUATION BOARD DATA SHEET
EV159
Evaluation Board for the AAT2601/2601A
Total Power Solution for Portable Applications
Waveforms
Ch. 2: VLX
(2V/div)
Ch. 2: VLX
(2V/div)
Ch. 3: IINDUCTOR
(200mA/div)
Ch. 3: IINDUCTOR
(200mA/div)
Ch. 1: VOUT_AC
(200mVac/div)
Figure 8: Light Load Switching Waveforms
(Buck) (VIN = 3.6V, VO = 1.8V, No Load).
Ch. 2: EN2
(1V/div)
Ch. 1: VOUT_AC1
(100mV/div)
Figure 10: Load Transient (LDO1)
(VIN = 3.6V, VO = 3.0V, IOUT = 40mA
to 300mA transient).
12
Figure 9: Full Load Switching Waveforms
(Buck) (VIN = 3.6V, VO = 1.8V, IOUT = 300mA).
Ch. 3: IOUT
(100mA/div)
Ch. 1: VOUT_AC
(200mVac/div)
Ch. 1: VOUT2
(1V/div)
Figure 11: Enable Start Up (LDO2)
(VIN = 3.6V, VO = 3.0V, EN2
from low to high).
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202284A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 22, 2012
EVALUATION BOARD DATA SHEET
EV159
Evaluation Board for the AAT2601/2601A
Total Power Solution for Portable Applications
Component
Part Number
Description
Manufacturer
U1
AAT2601/2601A
L1
CDRH2D14-3R3NC
Programmable 7-channel Total Power
Management IC
Inductor 3.3µH 820mA SMD
Q1
CMPT3904
NPN transistor 40V 200mAdc SOT23
R17, R19, R24, R29, R31, R32, R33, R37
R1, R2, R3, R4, R6, R9, R10, R11, R12, R13,
R14, R15, R16 R34, R35, R36, R38, R39
R28
R18
R5, R8, R20, R21, R22, R23, R25, R26, R27
R30
R7
C1, C2, C3, C14, C15
C5, C6, C7, C8, C9
C9
C4
C10, C11, C12
C13, C16, C17
D1
SW1
J1, J2
J3, J4, J5, J6, J7, J8, J9
J10
J11, J12, J13, J14, J15, J16, J17, J18, J19, J20
TP1~TP12
Chip Resistor
Res 10KΩ 1/16W 1% 0402 SMD
Sumida
Central
Semiconductor
Any
Chip Resistor
Res 0Ω 1/16W 1% 0402 SMD
Any
Chip Resistor
Chip Resistor
Chip Resistor
Chip Resistor
Chip Resistor
GRM21BR61C106K
GRM219R61A475K
GRM21BR60J226M
GRM188R60J475K
GRM188R71E104K
GRM188R71H103K
LED
Switch
Connector
Connector
Connector
Connector
Terminal
Shunt
PCB
Res 4.75KΩ 1/16W 1% 0402 SMD
Res 1.24KΩ 1/16W 1% 0402 SMD
Res 100KΩ 1/16W 1% 0402 SMD
Res 1KΩ 1/16W 1% 0402 SMD
DNP, Do Not Place
Cap Ceramic 10µF 0805 X5R 16V 10%
Cap Ceramic 4.7µF 0805 X5R 10V 10%
Cap Ceramic 22µF 0805 X5R 6.3V 20%
Cap Ceramic 4.7µF 0603 X5R 6.3V 10%
Cap Ceramic 0.1µF 0603 X5R 25V 10%
Cap Ceramic 10nF 0603 X7R 50V 10%
White LED, SMD
Normal-open push button
Header 13x2H
Header 2 pins
Header 2x2H
Header 3 pins
Terminal of test point
Shunt for connectors
AAT2601 Evaluation board PCB
Any
Any
Any
Any
-Murata
Murata
Murata
Murata
Murata
Murata
Any
Any
Any
Any
Any
Any
Any
Any
Skyworks
Skyworks
Table 5: AAT2601/2601A Evaluation Board Bill Of Materials.
Copyright © 2012 Skyworks Solutions, Inc. All Rights Reserved.
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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202284A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 22, 2012
13