BEM® सवित्रे™   Savitre Buck - 2 Amps True MPPT based Battery Charger Overview

The BEM® सवित्रे™  Savitre is a Solar True Maximum Power Point Tracking (MPPT) algorithm based Li-Ion Battery charger for single-cell (1S) or two-cell (2S) Li-ion or Li-Po batteries. This charger provides you with the ability to extract the maximum possible power out of your solar panel or other photovoltaic devices and feed it into a rechargeable Li-ion or Li-Po battery. This means that the battery would get fully charged in the shortest possible time. 

Set-up is easy as well. Simply, plug your solar panel into one (input) side of the solar charger and your battery into the other (output) side and the battery would start charging at the fastest rate! 

Description

The BEM® सवित्रे™  Savitre - 2 Amps MPPT  Solar Charge Controller consists of MPPT digital controller and photovoltaic drivers and is designed to control high efficiency DC/DC conversion used in photovoltaic based 3.7 V Li-Ion battery charging application.

Savitre is a true MPPT solar charge controller in the 2 Amps range unlike others.  Almost all the  solar charger modules available in the market  are actually PWM controllers. Then there are others that claim to be MPPT controllers  but actually operate at a fixed input voltage such as 12V or 16V regardless of the maximum power point (MPP) of the solar panel. The 'CN3791 MPPT Solar Charger Module' is one such module that operates at a fixed voltage that is factory set using a resistor divider.  

The PWM controller or the fixed input voltage 12 Volts and not at the MPP of the solar panel. 

If the battery voltage is very low, a slow charge current is applied and limited until the voltage rises above a pre-set threshold value Vt. The full charge current is then applied. Once full charge is detected on the voltage of the battery, the system switches to a floating charge and maintains the battery voltage at a fixed threshold. At any time, the system will run in MPPT mode if the available power is lower than the power required to achieve voltage or current regulation.

Savitre is a  Maximum Power Point Tracking (MPPT) solar charge controller for 12-V solar panels. This compact reference design targets small and medium power solar charger solutions and is capable of operating with 6- to 25-V solar panel modules, 3.7V Li-Ion batteries and providing  upto 2 A output current. The design uses a two-phase interleaved buck converter to step down the panel voltage to the battery voltage. The buck converter and its connected gate drivers are controlled by a ARM Cortex microcontroller unit (MCU), which calculates the maximum power point using the perturb and observe method. The solar MPPT charge controller is created with real-world considerations, including reverse battery protection, software programmable alarms and indications, and surge and ESD protection.

• 3.7 V Li-Ion Battery

• Vin range = 6V to 25V Vmp (21V Voc)

• Max Input Current: Isc = 0.9 A

• MPPT algorithm for optimized photovoltaic applications

• Up to 2A charging current

• Reverse current protection

• Trickle charge and fast charge mode

• Up to 73% converter efficiency

• 4.25V max charge voltage, 4.2V floating voltage

• Model MPPT1v2

• Connector 2.1 x 5.5mm DC Power Jack

  • INPUT Socket (Female)

  • OUTPUT Plug (Male)

• Operating Voltage (VDC) 12

• Operating Temperature (°C) -40 to 85

• Swithing Frequency (KHz) 50

• Maximum Charging Current (A) 2

• Length (mm) 42

• Width (mm) 20

• Height (mm) 15

• Weight (gm) 25

• Shipment Weight 0.035 kg

• Shipment Dimensions 12 × 10 × 5 cm

Specifications:

• Embedded:No

• Function: Battery Charger

• Primary Attributes: Li-Ion, Solar Power

• Supplied Contents: Board(s)

• Type:Power Management

• Utilized IC / Part: LPC802, 

Key Features

• BEM® SAVITRE™ is an.

• 75% efficiency in 12-V systems 

• Wide input voltage range: 15 V to 40 V

• High rated output current: 2A

• Battery reverse polarity, over-charge and over-discharge protections

• System over-temperature and ambient light detection capabilities

• Small board form factor: 100 mm x 80 mm x 40 mm

• Ana can ensure uninterrupted supply during power outages, switchover to generators, and such other power interruptions.

• Ana is an ONLINE DC UPS; there is no switching when the power fails - no glitches - avoids VPN disconnection or conference call drops.

• Borrows advantages of Offline UPS too: does not draw power from charged battery in the presence of AC mains; reduces temperature, increases efficiency, reliability and battery life, eliminates need for heat sink and lowers cost.

• Complete UPS with no missing blocks: Unlike other ‘sleek’ MINI UPS, Ana contains all the essential blocks - namely, AC to DC converter, DC to DC converter, Battery Management System and rechargeable batteries. Does not require external AC adapter.

• Inbuilt AC to DC converter designed to enhance battery life; prevents battery discharge in the off state.

• Uses BIS certified Lithium-ion cells (Brand: Hongli), Type 18650

• Intelligent Battery Management Systems (BMS) offer smart charging capabilities to protect batteries and enhance battery life.

• Plug-N-Play : Ana is a consumer grade MINI UPS, DIY friendly and can be installed in less than 15 seconds! Simply replace the old power adapter to the Wi-Fi router with Ana. Power up Ana from the AC Mains. Insert the DC plug of Ana into the router and switch ON the DC Switch provided on the right side of the Ana box. Your router is now ready for uninterrupted operation.

• Has both Mains ON (Charge) and DC ON (Discharge) Indicators:
  GREEN LED: ON indicates presence of AC Mains
  RED LED: ON indicates presence of DC Output
  Normal State: Both GREEN and RED LEDs are ON.      

• Ana comes with an assorted range of colours. However, the available colour will be shipped.

• Maximum Power Point Tracking (MPPT) Solar Charger Module

• 2-Pin JST Connectors for Solar Panel and Battery Connection

• PWM Switching Frequency of 300KHz

• Maximum Charging Current of 2A

• 
  

BEM® सवित्रे™   Savitre - 2 Amps True MPPT Solar Charge Controller Overview

The BEM® सवित्रे™  Savitre is a True Maximum Power Point Tracking (MPPT) Solar charger for single-cell Li-ion and Li-Po batteries. This MPPT solar charger provides you with the ability to extract the maximum possible power out of your solar panel or other photovoltaic devices and feed it into a rechargeable Li-ion or Li-Po battery. Set-up is easy as well. Simply, plug your solar panel into one (input) side of the solar charger and your battery into the other (output) side and the battery would start charging at the fastest rate!

The BEM® सवित्रे™  Savitre - 2 Amps MPPT  Solar Charge Controller consists of MPPT digital controller and photovoltaic drivers and is designed to control high efficiency DC/DC conversion used in photovoltaic based 3.7 V Li-Ion battery charging application.

Savitre is a true MPPT solar charge controller in the 2 Amps range unlike others.  Almost all the  solar charger modules available in the market  are actually PWM controllers. Then there are others that claim to be MPPT controllers  but actually operate at a fixed input voltage such as 12V or 16V regardless of the maximum power point (MPP) of the solar panel.  that is usually close to 18 Volts. The 'CN3791 MPPT Solar Charger Module' is one such module that operates at a fixed voltage that is factory set using a resistor divider. 12 Volts and not at the MPP of the solar panel. 

If the battery voltage is very low, a slow charge current is applied and limited until the voltage rises above a pre-set threshold value Vt. The full charge current is then applied. Once full charge is detected on the voltage of the battery, the system switches to a floating charge and maintains the battery voltage at a fixed threshold. At any time, the system will run in MPPT mode if the available power is lower than the power required to achieve voltage or current regulation.

Savitre is a  Maximum Power Point Tracking (MPPT) solar charge controller for 12-V solar panels. This compact reference design targets small and medium power solar charger solutions and is capable of operating with 6- to 25-V solar panel modules, 3.7V Li-Ion batteries and providing  upto 2 A output current. The design uses a two-phase interleaved buck converter to step down the panel voltage to the battery voltage. The buck converter and its connected gate drivers are controlled by a ARM Cortex microcontroller unit (MCU), which calculates the maximum power point using the perturb and observe method. The solar MPPT charge controller is created with real-world considerations, including reverse battery protection, software programmable alarms and indications, and surge and ESD protection.

• 3.7 V Li-Ion Battery

• Vin range = 6V to 25V Vmp (21V Voc)

• Max Input Current: Isc = 0.9 A

• MPPT algorithm for optimized photovoltaic applications

• Up to 2A charging current

• Reverse current protection

• Trickle charge and fast charge mode

• Up to 73% converter efficiency

• 4.25V max charge voltage, 4.2V floating voltage

• Model MPPT1v2

• Connector 2.1 x 5.5mm DC Power Jack

  • INPUT Socket (Female)

  • OUTPUT Plug (Male)

• Operating Voltage (VDC) 12

• Operating Temperature (°C) -40 to 85

• Swithing Frequency (KHz) 50

• Maximum Charging Current (A) 2

• Length (mm) 42

• Width (mm) 20

• Height (mm) 15

• Weight (gm) 25

• Shipment Weight 0.035 kg

• Shipment Dimensions 12 × 10 × 5 cm

Specifications:

• Embedded:No

• Function: Battery Charger

• Primary Attributes: Li-Ion, Solar Power

• Supplied Contents: Board(s)

• Type:Power Management

• Utilized IC / Part: LPC802, 

Key Features

• BEM® SAVITRE™ is an.

• 75% efficiency in 12-V systems 

• Wide input voltage range: 15 V to 40 V

• High rated output current: 2A

• Battery reverse polarity, over-charge and over-discharge protections

• System over-temperature and ambient light detection capabilities

• Small board form factor: 100 mm x 80 mm x 40 mm

• Ana can ensure uninterrupted supply during power outages, switchover to generators, and such other power interruptions.

• Ana is an ONLINE DC UPS; there is no switching when the power fails - no glitches - avoids VPN disconnection or conference call drops.

• Borrows advantages of Offline UPS too: does not draw power from charged battery in the presence of AC mains; reduces temperature, increases efficiency, reliability and battery life, eliminates need for heat sink and lowers cost.

• Complete UPS with no missing blocks: Unlike other ‘sleek’ MINI UPS, Ana contains all the essential blocks - namely, AC to DC converter, DC to DC converter, Battery Management System and rechargeable batteries. Does not require external AC adapter.

• Inbuilt AC to DC converter designed to enhance battery life; prevents battery discharge in the off state.

• Uses BIS certified Lithium-ion cells (Brand: Hongli), Type 18650

• Intelligent Battery Management Systems (BMS) offer smart charging capabilities to protect batteries and enhance battery life.

• Plug-N-Play : Ana is a consumer grade MINI UPS, DIY friendly and can be installed in less than 15 seconds! Simply replace the old power adapter to the Wi-Fi router with Ana. Power up Ana from the AC Mains. Insert the DC plug of Ana into the router and switch ON the DC Switch provided on the right side of the Ana box. Your router is now ready for uninterrupted operation.

• Has both Mains ON (Charge) and DC ON (Discharge) Indicators:
  GREEN LED: ON indicates presence of AC Mains
  RED LED: ON indicates presence of DC Output
  Normal State: Both GREEN and RED LEDs are ON.      

• Ana comes with an assorted range of colours. However, the available colour will be shipped.

• Maximum Power Point Tracking (MPPT) Solar Charger Module

• 2-Pin JST Connectors for Solar Panel and Battery Connection

• PWM Switching Frequency of 300KHz

• Maximum Charging Current of 2A

•