User's Guide
SLVU906 – April 2013
Low IDDQ PMIC for Battery Energy Harvesting
Applications
The TPS65290 is an integrated PMIC for flow-meter system, low-power energy-harvesting, medical,
consumer and commercial battery operation application. This EVM helps the evaluation of TPS65290 for
your actual system. TPS65290 can be controlled by SPI using the USB2ANY kit.
1
2
3
4
5
6
Contents
Introduction .................................................................................................................. 3
1.1
I/O Description ...................................................................................................... 3
Test Procedure .............................................................................................................. 4
2.1
Hardware and Software Set Up .................................................................................. 4
2.2
EVM Test ............................................................................................................ 7
2.3
GUI User’s Guide .................................................................................................. 9
2.4
Simulation Model and Test Result ............................................................................. 11
Schematic .................................................................................................................. 14
Board Layout ............................................................................................................... 15
4.1
PCB Layout ........................................................................................................ 16
Bench Test Setup Conditions ............................................................................................ 20
Bill of Materials ............................................................................................................. 21
List of Figures
1
USB2ANY Interface......................................................................................................... 5
2
10 Pins of USB2ANY Indication........................................................................................... 6
3
GUI Main Window ........................................................................................................... 7
4
Set Up for the USB2ANY .................................................................................................. 8
5
Unlock the USB2ANY ...................................................................................................... 9
6
Read the Data
7
Write the Register ......................................................................................................... 11
8
Buck Boost Efficiency, VIN = 3.6 V, VO = 4.5 V
12
9
Buck Boost Efficiency, VIN = 3.6 V, VO = 2.8 V
12
10
11
12
13
14
15
16
17
18
.............................................................................................................
........................................................................
........................................................................
Buck Boost Load Regulation, VIN = 3.6 V, VO = 4.5 V, PFM Mode .................................................
Buck Boost Line Regulation, VO = 2.8 V, IO = 5 mA...................................................................
TPS65290 Schematic .....................................................................................................
Placement .................................................................................................................
Board Layout (Top Layer) ................................................................................................
Board Layout (Middle 2nd) Layer .........................................................................................
Board Layout (Middle 3rd) Layer .........................................................................................
Board Layout (Bottom Layer) ............................................................................................
Headers Description and Jumper Placement ..........................................................................
10
13
13
14
15
16
16
17
18
20
List of Tables
1
2
..........................................................................................................
Header Descriptions ........................................................................................................
Power Connection
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3
1
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2
3
Test Points ................................................................................................................... 4
4
J4 10-PIN Connection of USB2ANY
5
Jumper Connections for Low-IDDQ Measurement ..................................................................... 8
6
Default Value of EVM
.....................................................................................
......................................................................................................
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Introduction
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1
Introduction
1.1
I/O Description
Table 1. Power Connection
NUMBER
TYPE
LOCATION
SIGNAL
J1
I
N
Input supply
COMMENT
J2
I
N
SPI
J3
O
S
LDO and MICRO outputs
J7
O
E
Buck-boost output
Connection to input supply
Connection to SPI interface board
Connection to MICRO and LDO output
Connection to buck-boost output
Table 2. Header Descriptions
NUMBER
FUNCTION
LOCATION
PLACEMENT
Connect analog VIN(pin #2) to the
main power connector(J1)
COMMENT
JP1
Supply connect
NW
Fit in most cases
JP4
LDO input connector
W
Connect VMAX to the joint of 1µF and
Fit in most cases
LDO input
JP8
Buck mini connection
S
Connection to Buck mini inductor
Fit only when Buck mini is
used
JP8A
PWR_LDO2 connector
S
Connection to PWR_LDO2 output If
buck-mini option available leave open
Not connect in BUCKmini
mode
JP10
Buck MINI output ESR
S
When not fitted adds a 1-Ω resistance
to the output capacitor, allowing for a
Fit according to test
predictable ESR value for the
requirement
BUCKmini mode. Fit for low IQQ LDO
or zero leak circuit.
JP11
CE
S
Connect to VMICRO for enabling
serial communication. Conect to GND Fit according to test
for Vmicro only mode for lowest IDDQ requirement
consumption.
JP13
BB enable
SE
Connect to GND to disable BB (I2C
Fit according to test
can enable it). Connect to VMICRO to
requirement
enable BB.
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Test Procedure
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Table 3. Test Points
TP
NAME
LOCATION
SIGNAL
TP1
PWR_VIN
W
PWR_VIN input pin 1
TP2
GND
W
TP3
PWR_VMAX
W
TP4
VMAX
W
VMAX PIN 4
TP5
LDO IN
W
LDO input pin 5
TP6
LDO_OUT
W
LDO output pin 6
TP7
PWR_LDO1
W
PWR_LDO1 switch output pin 7
TP8
GND
W
TP9
GND
E
TP12
PWR_BB2
E
TP14
PWR_BB1
E
PWR_BB1 switch pin 13
TP15
BB_OUT
E
Buck boost output pin 15
TP16
BB_LX2
N
LX2 node BB (pin 16)
TP18
BB_LX1
N
LX1 node BB (pin 18)
TP20
INT
N
Interruption pin 20
TP21
MISO
N
MISO pin 21 SPI
2
Test Procedure
2.1
Hardware and Software Set Up
2.1.1
PWR_VMAX PIN 3
PWR_BB2 switch pin 12
Power Supply
A power supply capable of supplying 2.2 V - 5 V, 3 A, is required. A short cable from the power supply to
the EVM input is recommended. If long line is a must, a 2,200-µF capacitor is suggested at the input for
better input supply stability.
2.1.2
Load
Use electronic load or other variable resistor to evaluate different load conditions.
2.1.3
Input Current Meters
The current meters must have low impedance when measuring the efficiency to decrease the voltage drop
affect. Placing a 2,200-µF capacitor at the input side of the EVM will guarantee the low impedance.
2.1.4
USB2ANY Communication Kit
The USB2ANY serves as an interface adapter between a host PC and a TPS65290 EVM. The
communication between the USB2ANY and the host PC is via USB, while the communication between the
USB2ANY and the TPS56290 EVM is via an SPI. The USB2ANY hardware is based on the TI
MSP430F5529 16bit Microcontroller with integrated USB 2.0.
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Test Procedure
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Figure 1. USB2ANY Interface
The center 10 pins of the USB2ANY is used to connect to JP2 in the EVM with the provided 10-pin flat
cable. The pin definitions of the center 10-pin connectors of the USB2ANY box are shown in Figure 2.
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Test Procedure
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Figure 2. 10 Pins of USB2ANY Indication
Table 4. J4 10-PIN Connection of USB2ANY
TERMINAL
2.1.5
DESCRIPTION
NAME
NO.
P4.1/GPIO0/I2C(SDA)
1
General-purpose digital I/O, I2C Data
P4.2/GPIO1/I2C(SCL)
2
General-purpose digital I/O, I2C Clock
P4.0/GPIO2/SPI(SCLK)/Easy Scale (DOUT)
3
General-purpose digital I/O, SPI Serial Clock, EasyScale DOUT
P2.4/GPIO3/PWM3/INT0
4
General-purpose digital I/O with port Interrupt, PWM up to 12 MHz
GND
5
Common Ground
+3.3_EXT
6
Provides a +3.3V output power supply at up to 100 mA. Switched,
Limited, and Monitored
P4.4/GPIO4/SPI(MOSI)/UART(TXD)
7
General-purpose digital I/O, SPI Slave In Master Out, UART
Transmit
P4.5/GPIO5/SPI(MISO)/UART(RXD)
8
General-purpose digital I/O, SPI Slave Out Master In, UART
Receive
P2.0/GPIO6/SPI(CS)/PWM1/INT1
9
General-purpose digital I/O with port Interrupt, PWM up to 12 MHz
P1.2/GPIO7/PWM0/INT2
10
General-purpose digital I/O with port Interrupt, PWM up to 12 MHz
Software
Download the GUI and proper driver from the TI website: http://www.ti.com/product/tps65290 Refer to the
name as: PC-Software_v1.14.0.3.zip. In order to operate the USB2ANY interface adapter, the following
items are required:
• An assembled and programmed USB2ANY interface module
• Computer with Microsoft® XP SP2 (minimum) or Windows 7 operating system with .NET 2.0 frame
work and available USB port
• Software zip: PC-Software_v1.14.0.3.zip
• Type-A to Mini-B (5-pin) USB cable (Included in an EVM kit)
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•
A 10-pin cable connector (Included in an EVM kit)
Then install the software step by step:
1. Extract the zip. The folder contains the USB2ANY_GUI.exe and support files. The USB interface
adapter is recognized by a PC as a generic human interface device (HID), which is supported by the
built-in USB/HID drivers of the Windows® operating system. Therefore, plug it and it will play
automatically, no proprietary USB driver is required.
2. Plug in the USB cable to both the PC and the USB interface adapter. The status LED of the adapter
will flash several times and then will illuminate steadily indicating that the USB2ANY is functioning
properly and is ready to use.
If the green LED fails to flash several times illuminating steadily, or fails to illuminate at all, check to
ensure the USB cable is securely connected. If the connection is secure, try a different USB port
and/or rebooting the computer. If that does not fix the issue then contact TI technical support.
3. Run the USB2ANY_GUI.exe software. The status bar on the bottom left should show USB2ANY:
Detected. If it shows USB2ANY: NOT Detected, follow the procedure in step 2. above until the status
bar indicates that the USB2ANY has been detected.
Figure 3. GUI Main Window
2.2
EVM Test
2.2.1
1.
2.
3.
4.
Power Up Sequence
Connect USB2ANY to a host computer by an USB cable
Launch USB2ANY GUI software as described in the following section
Connect a 10-pin flat cable between the USB2ANY and an EVM
Power up the input of EVM
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Test Procedure
2.2.2
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USB2ANY GUI Launch
Change as the red box selection as shown figure Figure 4. Change the divider of the input frequency to
the same as that in Figure 3 to make the communication speed 4 kHz. Start with low communication
frequency for easier verification.
Make sure each red box is properly modified.
Then, clock “Set SPI” to make the change enabled.
“Set SPI” should be clicked everytime after any in the red boxes are changed.
Probe that voltages of CS, SCL, MOSI and MISO are all zero.
Figure 4. Set Up for the USB2ANY
2.2.3
Test With SPI Interface Buffer Disabled for Lowest IDDQ Mode
When JP11 is connected to GND, TPS65290 provides only Vmicro voltage and other blocks are disabled
to maintain minimum power consupmtion. Therefore the SPI communication doesn’t work at Vmicro only.
Use Table 5 for the proper jumper connection for Vmicro only mode.
Table 5. Jumper Connections for Low-IDDQ Measurement
Vmicro MODE
FIT THESE JUMPERS
DO NOT FIT THESE JUMPERS
JP11, JP13
TPS65290BM
JP1, JP4, JP8
JP8A, JP10
GND
TPS65290ZB
JP1, JP4, JP10, JP8A
JP8
GND
TPS65290LM
JP1, JP4, JP10, JP8A
JP8
GND
The default value of the micro and buck/boost are described in Table 6. The buck-boost can be enabled
by connecting JP13 to Vmicro. Keep in mind that the loading of an oscilloscope probe or a multi-meter can
increase the input current.
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Table 6. Default Value of EVM
DEFAULT OUTPUT VALUE
2.2.4
MIN
TYP
MAX
Vmicro
1.98 V
2.2 V
2.42 V
Vbb_out
3.977 V
4.1 V
4.223 V
NOTES
To enable the buck/boost, JP13 should
connect as ENBB-VMICRO
Test With the SPI iIIerface
Connect JP11 to Vmicro to enable SPI interface buffers and the digital block. Follow Section 2.3 for
detailed GUI instruction.
2.3
2.3.1
GUI User’s Guide
GUI User’s Guide
Write “1 0 80” on the read box.
Click the “Write and Read” button.
Figure 5. Unlock the USB2ANY
2.3.2
Read the Register
Fill in the red box then click the “Write and Read” button.
The first character is the register address to read. Keep the second and the third characters to be “80 00”.
The figure below shows reading the address of 03, and then gets the data back as 08, which means that
the buck/boost output voltage is 2.6V now.
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Test Procedure
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Figure 6. Read the Data
2.3.3
Write the Register
Fill in the red box then click the “Write and Read” button.
The first character is the register address to write, and the third character is the value to write in. Keep the
second character to be “00”.
The figure below shows writing the HEX 12 to address 03, to change the output voltage to 4V, after setting
the data you want to write, and click the “Write and Read”.
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Figure 7. Write the Register
2.4
2.4.1
Simulation Model and Test Result
Spice Model
This device has one similar function spice model of buck/boost. Download at:
http://www.ti.com/product/tps63020
And it’s convenient to use TINA-TI software to simulate under varying conditions. Download this tool at:
http://www.ti.com/tool/tina-ti
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Test Procedure
2.4.2
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Main Features
2.4.2.1
Efficiency
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0
50
100
150
200
250
300
Io (mA)
350
400
450
500
Figure 8. Buck Boost Efficiency, VIN = 3.6 V, VO = 4.5 V
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0
50
100
150
200
250
300
Io(mA)
350
400
450
500
Figure 9. Buck Boost Efficiency, VIN = 3.6 V, VO = 2.8 V
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2.4.2.2
Load Regulation
4.50
4.48
4.46
4.44
4.42
4.40
4.38
0
50
100
150
200
250 300
Io (mA)
350
400
450
500
Figure 10. Buck Boost Load Regulation, VIN = 3.6 V, VO = 4.5 V, PFM Mode
2.4.2.3
Line Regulation
2.85
2.84
2.83
VLDO(V)
2.82
2.81
2.8
2.79
2.78
2.77
2.76
2.75
3
3.5
4
4.5
5
5.5
6
6.5
Vin(V)
Figure 11. Buck Boost Line Regulation, VO = 2.8 V, IO = 5 mA
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Schematic
3
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Schematic
Figure 12. TPS65290 Schematic
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Board Layout
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4
Board Layout
Figure 13. Placement
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Board Layout
4.1
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PCB Layout
Figure 14. Board Layout (Top Layer)
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Board Layout
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Figure 15. Board Layout (Middle 2nd) Layer
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Board Layout
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Figure 16. Board Layout (Middle 3rd) Layer
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Board Layout
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Figure 17. Board Layout (Bottom Layer)
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Bench Test Setup Conditions
5
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Bench Test Setup Conditions
N
SPI Interface
+
Vin
Switch point
LX1, L2
Test
Points
BBout
GND
PWR_BB1
LDOout GND Vmicro
Figure 18. Headers Description and Jumper Placement
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Bill of Materials
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Bill of Materials
Qty Designator
Value
Footprint
Manufacturer
Part Number
Description
4
C1, C7, C10, C4
1uF
0603
TDK Corporation
C1608X7R1A105K
CAP CER 1.0UF 10V X7R 0603
6
C2, C3, C8, C12, C14
100nF
0603
Kemet
C0603C104K8RAC CAP .10UF 10V CERAMIC X7R
TU
0603
1
C6
2.2uF
0603
Kemet
C1608X7R1A225M
CAP CER 2.2UF 10V X7R 20%
0603
2
C15, C15A
33uF
0805
TDK Corporation
C2012X5R336M12
5AC
CAP CER 33UF 10V X5R 20% 0805
1
J1
ED1514
TB_2X3.5MM
On Shore
Technology Inc
ED555/2DS
TERMINAL BLOCK 3.5MM 2POS
PCB
2
J3,J7
ED555/3D
S
TB_3X3.5MM
On Shore
Technology Inc
ED555/3DS
TERMINAL BLOCK 3.5MM 3POS
PCB
5
JP1, JP4, JP8, JP8A,
JP10
JMP0.2
Molex Inc
22-10-2021
CONN HEADER 2POS .100 VERT
GOLD
2
JP11, JP13
JMP0.3
Molex Inc
22-10-2031
CONN HEADER 3POS .100 VERT
GOLD
1
L1
3.3uH
4mmx4mm
Abracon
Corporation
ASPI-0418FS3R3M-T3
INDUCTOR SHLD POWER 3.3UH
SMD
1
L2
33uH
0603
TDK Corporation
GLFR1608T330MLR
INDUCTOR 33UH 60MA 20% 0603
1
L3
47uH
(DNI)
0805
TDK Corporation
GLFR2012T470MLR
INDUCTOR 47UH 60MA 20% 0805
1
R10
1
0603
Panasonic ECG
ERJ-3GEYJ1R0V
RESISTOR 1.0 OHM 1/10W 5%
0603
16
TP1, TP2, TP3, TP4,
TP5, TP6, TP7, TP8,
TP9, TP12, TP14,
TP15, TP16, TP18,
TP20, TP21
TP_1030
Keystone
1030
TEST POINT SLOTTED
1
U1
RHF (PQFP24)
Texas Instruments
TPS65290
1
R2
0 Ohm
(DNI)
0603
1
J2
NA
5x2 header
Sullins Connector
Solutions
SBH11-PBPC-D05- CONN HEADER 2.54mm 10POS
ST-BK
GOLD
1
C21
10uF
0603
Taiyo Yuden
EMK107BBJ106M
A-T
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CAP CER 10UF 16V 20% X5R 0603
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