PCB manufacturer CC CV DC DC automatic step down/up buck/boost for solar Car battery MTTP charger 9 60V to 3 60V 12.6 VDC 20A

Product Overview

Description

 

We produce MODULE ! CUSTOM-MADE module is OK! Our company produce your own board!

 

LM2577 automatic up and down Solar power  panels supply module  3V-35V turn to1.2V-30V BUCK BOOST constant voltage converter     

                                                                                                               

Product Picture:                                                                                                    

                                                                                                                              

Product features:                                                                                  

Description of the update :( dosage does not increase, counter-offer, please pass)

8705 package into QFN package: the same circuit filter capacitor INTVCC no different sometimes unable to start nor SSOP package some batches of the problem can not be used.

12V Buck increase board auxiliary power: the power supply for the 8705 and thermostatically controlled fan circuitry, even in 8705 the state will not be hot work, and to further improve the efficiency and stability.

Increase in temperature-controlled fan Interface: Users can connect 12V / 0.3A auxiliary cooling fan currents below. (Not a fan, you need to purchase)

Increasing the switching enabled interfaces: You can pick XH-2.54 terminals, terminal short circuit shut down all output, and the current is less than 1mA.

Input and output electrolytic capacitor to 4: all low ESR capacitor, the filter effect is not an ordinary capacitor can be compared; however increased height, the height required can contact to modify.

 

Large price advantages! According to need to design into other styles.

 

The above price is no digital display of voltage and current price (second graph, the digital place empty), plus output voltage display +10 yuan, plus output current display +30 (please leave a message or contact needs what, or not shipped) the upper part of the cost of current display, plus the above price is equivalent to free, it needs a high-profile your hand, please do not bargain. Chip for a long time to do this, do not know how many burned, changed five versions yes. If you are recommended to install inside the machine or equipment do not show up, you can also reduce a little wear and tear, the other parameters are unchanged.

 

Part Parameters:

1, the module size: 90 * 90 * 53 / 35mm

2. Linear Technology LT8705 step-down synchronous rectification control scheme automatically

3, Non-Isolated BUCK-BOOST

4, the current mode control (the difference between the current model and voltage module below, the former than the latter)

5, the input voltage 9-60V

6, the input current adjustable range 0.5-20A,

7, the input voltage adjustable range: 9-60V This function is suitable MPPT solar panels, a detailed look at in detail.

8, the output voltage regulation: 3-60V (60V no section above)

9, the output current regulation: 0.5-20A (15A strongly recommended to use within a relatively stable point, the waveform will not jitter)

10, voltage display (optional): voltmeter measuring 100V maximum voltage, high voltage relative blessing green gram multimeter has an error of about 0.5V.

11, current display (optional): current measurement maximum 30A, the accuracy is about 0.02A-0.3A, different environments will change the accuracy of the current display output only as a reference, please do not evaluate the ammeter multimeter standard 3 milliohms high sampling resistor 20A is displayed to the case of this value already, and a large current display multimeter than some general are good, with the blessing of the display is calibrated multimeter green gram.

 

Module Benefits:

1 has a high input voltage above 60V value, it can withstand 80V pulse voltage, and the input as well as TVS transient suppression diodes, dual protection can withstand the pulse voltage car during startup. (Controller voltage 80V, MOS tube rated 75V)

2, high output current: output current up to 15A to work long hours, a maximum current of 20A.

3, the input and output current adjustable: adjustable input current for current source input, adjustable output current is particularly suitable for large current charging the battery, as well as other large current charging lithium iron, covering all batteries.

4, with input and output voltage adjustment function: Input voltage regulator voltage for maximum power point tracking solar panels, to some extent to achieve the maximum power point tracking role.

5, with temperature-controlled fan function: heat sink temperature exceeds 45 degrees fan began to turn, the thermostat part of a hysteresis circuit, the fan will not shake.

6, anti-irrigation protection: output can be directly connected to the battery, from time series diodes, compared to a lot of diodes in series loss. Output can withstand the pulse voltage of 60V, for example, then the output voltage is 14V, can be added at the output of 60V DC voltage, and do not worry about anti-irrigation problems.

7, an optional low load current mode: Enter the case is not connected header 58.8V output 14V, standby current of only around 8mA, 8mA current directly linked to the 100AH battery, in theory, the battery will power 520 genius to shine, so do not worry about the problem of standby losses.

8, high efficiency: synchronous rectification mode, 2mΩ on-resistance MOS tube, 500W output power efficiency up to 95% higher output efficiency low dropout.

9, high reliability: a control device can withstand 80V voltage, the input TVS protection, input and output Murata used a total of 11 low-ESR ceramic capacitors and Japanese electrolytic capacitors black stainless steel and ruby. SMD components sprayed with three anti-paint, can effectively improve the ability of anti-severe environment, capacitors and other devices will be used industrial glue.

10, selectable voltage current display: output status display section for easy viewing.

 

Precautions:

1, please use the module in accordance with the basic principles of conservation of energy

2, input-output ratio of 3 or less need to maintain that output need 36V please ensure that input is above 12V. Do not expect 60V input 10V output can be achieved sufficient power and stability. But input 60V, 10V output is about to reach the maximum current 20A.

3, module description up to 60V, but actually get our hands on only 58V, 60V use only ensure short, the actual use please leave a margin, 12V batteries connected in series 5 Follow the 70V standard, not the actual 12V * 5 = 60V , when the battery voltage is only 12V power is not special enough to explain the details, please refer specific battery discharge curve.

4, module input fuse, if not careful will not be reversed after the input module does not work displayed, use a multimeter to test whether the input capacitor positive and negative short-circuit, if not short-circuit Congratulations module may still be good, you may only burn the fuse This time, please re-power, direct positive to the positive input capacitance, the module can work properly replace the fuse, or skip fuse.

5, input and output capacitance is large, high-voltage input or high voltage DC power output Please note issue when testing high voltage output load promptly disconnected, otherwise they will pull the arc blackened terminals. Extremely high temperatures generated by the arc, found 50V output arc about 3 seconds to pull the pillars pillow melting.

6, if the input module from the alternator please ensure that the bridge rectifier output filter capacitor is large enough, out of the voltage rectifier bridge is pulsating type of module input disadvantage.

 

Instructions:

Potentiometer adjustment of input and output current regulation affected by the chip control principle of the adjustment process is not linear

4 potentiometer adjustment mode are adjusted value increases clockwise.

1, the input voltage adjustment potentiometer: Suppose you want to set a minimum input voltage of 20V, 20V input termination adjusted way to power, counterclockwise to adjust the potentiometer until the module stop output. This time for the 20V undervoltage shutdown value. If the input is a constant current source, and the load is large, the module will reduce the input current to maintain the input voltage is 20V.

2, the input current adjustment potentiometer: Suppose you want to set the maximum input current must not exceed I1, when the input voltage V1, the output voltage V2, the output current is I2, adjust the way in order to ensure V2 * I2> V1 * I1. Then until the desired value I1 is set in the counter-clockwise adjustment potentiometer. For example: Set the input current does not exceed 5A, the input voltage of 20V, an output voltage of 20V, output current of 6A, when the input current actual value is greater than 6A, then adjust the potentiometer counterclockwise until the input current is 5A so far. So the current state of the module will not absorb input greater than 5A.

3, the output voltage adjustment potentiometer: clockwise to regulate the output voltage increases, counterclockwise smaller.

4, the output current regulator potentiometer: adjust the way to the multimeter and great series with the load at the output of the positive and negative (or directly with a multimeter shorted output, does not recommend this practice, the accuracy will be offset) adjustment potentiometer counterclockwise until multimeter current value lowered to the desired value. (Adjust the premise is not to restrict or limit the input power is greater than the output power regulation time, or because of the input power is limited and can not get the correct output value) regulating the use of the module itself ammeter way to ensure that the output voltage is more than 5V, Termination greater than the desired output current value of a large load, adjust the potentiometer counter-clockwise until the display value is the desired value. (The reason is the need to ensure that the output current detection output voltage above 3V, output short circuit output voltage is less than 3V can not display the output current value).

5, shorting cap switch: module input and output voltage can be switched via jumper show jumping at the following shows the default output voltage.

6, the input and output terminals: The default is 4 PCB-7 high-current terminals, it is recommended to do with copper wire nose after use, an optional welding 187 inserts, or 7.62mm pitch terminal.

7, CLKIN and CLKOUT: The port function when two modules in parallel synchronous clock. (Not welded, easy access due to misuse and damage to the module level)

 Modules in parallel use: accurately adjust the output voltage of the power the two modules, deviations in the MV level possible, including complete power failure on the electrical capacitance, in CLKOUT a module with DuPont line CLKIN received another module. In both the input and output modules can be connected together and the module output current limit not reached the case will be the presence of the uneven flow, if you need to configure two modules of the output current, load adjustment of each module Output current can be, modules in parallel can not adjust the input and output voltage.

If required modules please inform the use of the environment, the effect will be evaluated using a point can also give recommendations and practical test before shipment will work under the parameters.

 

Application Notes

1, the solar maximum power charging: input current limit function is very suitable for solar panels charging constant current source, purchase two plus 200W solar panels charge the module is a good choice, output is directly connected to the battery charge, without worrying about the anti-irrigation, as long as the output and the battery positive and negative can not be reversed.

2, high current efficiency car battery charging, car two battery charging power supply system

3, large-capacity lithium battery lithium iron high current constant current charging

4, high-power LED constant current drive

5, battery voltage power supply systems, telecommunications regulator reserve base.

6, can be used as an adjustable voltage source undemanding use (response speed, accuracy, noise is not as linear regulators, but with high-efficiency and high-power characteristics)

7. Other adjustable constant current applications

 Remarks:

1, the output voltage is different in different MOS transistors and capacitors, filter effects, different efficiency and transient capability, it is recommended according to the actual need to select the input and output are lower than 40V can contact other parameter combinations.

2, on-resistance when the MOS Vgs = 6V Found in only 3 cents in Europe, to some extent reduce the I2R losses when the straight.

3, Module Input current Output current adjustment range is 0.5-20A. (New version in order to reduce the loss sampling resistor, the minimum adjustment currents 1A, the need to use small current please specify)

4, the input-output ratio of less than 2 times the long working hours no pressure at about 10A, 15A of the above still have to enhance heat dissipation. Good heat dissipation life president to do.

 

 

                                                                                                                                                                                                         

Shipping terms:                                                                                                

 

1.Ship to whole world : DHL , UPS, FEDEX, EMS, HKPOST, SGPOST,SWPOST

 

2.Lead time:2days. If we don't have stock at that time, it takes 2-4days to produce it.

 

                                                                                                            

Payment terms                                                                                                   

 

1.We accept PAYPAL, TT, WESTERN UNION, ESCROW

 

2.Commission:
   *Paypal: total sum *0.041
   *Escrow: total sum *0.05
   *TT: $28-$45(according to amount)
   *Western union: $0

 

                                                                                                            

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