SPV1040
High efficiency solar battery charger with embedded MPPT
Datasheet - production data
Description
The SPV1040 device is a low power, low voltage,
monolithic step-up converter with an input voltage
range from 0.3 V to 5.5 V, capable of maximizing
the energy generated by a single solar cell (or
fuel cell), where low input voltage handling
capability is extremely important. Thanks to the
embedded MPPT algorithm, even under varying
environmental conditions (such as irradiation,
dirt, temperature) the SPV1040 offers maximum
efficiency in terms of power harvested from the
cells and transferred to the output. The device
employs an input voltage regulation loop, which
fixes the charging battery voltage via a resistor
divider. The maximum output current is set with a
current sense resistor according to charging
current requirements. The SPV1040 protects
itself and other application devices by stopping
the PWM switching if either the maximum current
threshold (up to 1.8 A) is reached or the
maximum temperature limit (up to 155 °C) is
exceeded. An additional built-in feature of the
SPV1040 is the input source reverse polarity
protection, which prevents damage in case of
reverse connection of the solar panel on the
input.
TSSOP8
Features
0.3 V to 5.5 V operating input voltage
140 mΩ internal synchronous rectifier
120 mΩ internal power active switch
100 kHz fixed PWM frequency
Duty cycle controlled by MPPT algorithm
Output voltage regulation, overcurrent and
overtemperature protection
Input source reverse polarity protection
Built-in soft-start
Up to 95% efficiency
TSSOP8 package 3x4.4 mm
Applications
Smart phones and GPS systems
Wireless headsets
Small appliances, sensors
Portable media players
Digital still cameras
Toys and portable healthcare
Table 1: Device summary
Order code
SPV1040T
SPV1040TTR
Package
TSSOP8
Packing
Tube
Tape and reel
February 2017
DocID18080 Rev 7
1/19
www.st.com
This is information on a product in full production.
Contents
SPV1040
Contents
1
2
3
4
5
6
Block diagram.................................................................................. 5
Pin description ................................................................................ 6
Electrical ratings ............................................................................. 7
Electrical characteristics ................................................................ 8
Typical characteristics .................................................................. 10
Detailed description ...................................................................... 12
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
6.10
6.11
6.12
Soft-start mode................................................................................ 12
Start-up mode ................................................................................. 12
MPPT mode .................................................................................... 12
Constant voltage regulation ............................................................ 12
Constant current regulation ............................................................. 12
Overcurrent protection .................................................................... 13
Overtemperature protection ............................................................ 13
Shutdown mode .............................................................................. 13
Undervoltage lockout ...................................................................... 13
Reverse polarity .............................................................................. 13
Burst mode ...................................................................................... 14
Sleep-in mode ................................................................................. 14
TSSOP8 package information ......................................................... 15
TSSOP8 packing information .......................................................... 17
7
Package information ..................................................................... 15
7.1
7.2
8
Revision history ............................................................................ 18
2/19
DocID18080 Rev 7
SPV1040
List of tables
List of tables
Table 1: Device summary ........................................................................................................................... 1
Table 2: Pin description .............................................................................................................................. 6
Table 3: Absolute maximum ratings ........................................................................................................... 7
Table 4: Thermal data ................................................................................................................................. 7
Table 5: Electrical characteristics ............................................................................................................... 8
Table 6: TSSOP8 package mechanical data ............................................................................................ 16
Table 7: Document revision history .......................................................................................................... 18
DocID18080 Rev 7
3/19
List of figures
SPV1040
List of figures
Figure 1: Block diagram .............................................................................................................................. 5
Figure 2: Simplified application circuit ........................................................................................................ 5
Figure 3: Pin connection top view ............................................................................................................... 6
Figure 4: Efficiency vs output voltage 3 PV cells - Vmp = 1.5 V, LX = 33 μH .......................................... 10
Figure 5: MPPT efficiency vs output voltage 3 PV cells - Vmp = 1.5 V, LX = 33 μH ................................ 10
Figure 6: Efficiency vs output voltage 4 PV cells - Vmp = 1.5 V, LX = 33 μH .......................................... 10
Figure 7: MPPT efficiency vs output voltage 4 PV cells - Vmp = 2 V, LX = 33 μH ................................... 10
Figure 8: Efficiency vs output voltage 5 PV cells - Vmp = 1.5 V, LX = 33 μH .......................................... 11
Figure 9: MPPT efficiency vs output voltage 5 PV cells - Vmp = 2.5 V, LX = 33 μH ................................ 11
Figure 10: VLX and ILX waveforms - D = 39% ......................................................................................... 11
Figure 11: VLX and ILX waveforms - D = 68% ......................................................................................... 11
Figure 12: MPPT working principle ........................................................................................................... 13
Figure 13: TSSOP8 package outline ........................................................................................................ 15
Figure 14: TSSOP8 carrier tape outline.................................................................................................... 17
Figure 15: TSSOP8 reel outline ................................................................................................................ 17
4/19
DocID18080 Rev 7
SPV1040
Block diagram
1
Block diagram
Figure 1: Block diagram
Figure 2: Simplified application circuit
In order to set up the application and simulate the related test results please go to
www.st.com.
DocID18080 Rev 7
5/19
京公网安备 11010802033920号
EEWORLD
