5A constant voltage constant current
module
When you use this product, the module inputs and outputs
to the ground and do not co-together, this will cause the board
power current sense resistor is bypassed, so that the module can
not adjust the output current size, the case then load easy to burn
power chip module.
This module is easy to use, powerful! ! !
A module has three major features to meet most of your
occasions! ! !
Module Description:
1. high power, high efficiency, 5A, low
ripple;
2. triple:
(1) Use as a normal blood pressure modules with
overcurrent protection capability;
(2) as the various voltage lithium batteries, batteries,
nickel-cadmium nickel-metal hydride batteries (battery) charger for
solar panels, wind turbines and other occasions;
(3) is used as a high-power LED constant current drive
module;
3. With constant pressure and constant current modes,
there are light indicates which mode is currently in
module;
4. When used as a lithium battery charger, you can set
the float voltage and the charge current size, there is light
indicates is being charged or has been filled;
5. Has the current limit protection, output short
circuit even if it will not burn module.
6. This module uses machine placement, reflow soldering,
and each module shipments have been two hours before the aging
tests to ensure high reliability.
First, the module parameters
Input: IN + input positive, IN- input
negative
Output way: OUT + output positive, OUT- output
negative
Input voltage: 4-38V
Output voltage: 1.25-36V continuously
adjustable
Output current: adjustable, maximum 5A
Output Power: 75W maximum
Working temperature: -40 to + 85 degrees
Operating frequency: 180KHz
Conversion efficiency: up to 96%
Short circuit protection: Yes (limit current
8A)
Overtemperature protection: (automatically shut off the
output after overtemperature)
Input reverse polarity protection: None, (if necessary,
please enter the string into the high current diode)
Installation: four 3mm screws
Module dimensions: length 51mm width 26mm height
15mm
Weight: 23g
Second, the application
1. Use as a normal blood pressure modules with
overcurrent protection capability
Instructions:
(1) constant pressure regulator potentiometer, the
output voltage reaches the voltage value you want
(2) 10A current with a multimeter measuring the output
short circuit current file (directly to the two leads to the output
can), while adjusting the constant current potentiometer allows the
output current reaches a predetermined value of overcurrent
protection. (Such as the current value of the multimeter displays
4A, then you can use the module to the maximum current 4A, 4A
current to constant voltage constant current when the red light is
on, otherwise the light off)
Note: When used in this state, since the output of 0.05
ohm current sense resistor, there will be 0 ~ 0.3V voltage drop
after connected to the load, this is normal! This drop is not being
pulled down your load, but down-sampling resistor.
2. Use as a battery charger
Module without constant function can not be used to
charge the battery, since the end of the battery and charger power
consumption big difference between charging current is too large,
resulting in damage to the battery, so when you want to start the
battery using a constant current charging, when charging to a
certain extent automatically switches back to constant voltage
charging.
Instructions:
(1) Make sure you need to recharge battery float voltage
and charging current; (if lithium argument is 3.7V / 2200mAh, then
float voltage is 4.2V, the maximum charging current 1C, namely
2200mA)
(2) under no-load conditions, the multimeter to measure
the output voltage of the constant voltage potentiometer to adjust
the output voltage reaches the float voltage; (if rechargeable
lithium battery to 3.7V, the output voltage can be adjusted to
4.2V)
(3) 10A current with a multimeter measuring the output
short circuit current file (directly to the two leads to the output
can), while adjusting the constant current potentiometer allows the
output current reaches a predetermined charge current
value;
(4) Charging turn lamp current default factory setting
is 0.1 times the charging current; (the battery during charging
current is gradually reduced, gradually converted to constant
voltage charging by the constant current charging, if the charging
current setting is 1A, then when Charge current is less than 0.1A
when the blue light off, green light is on, then the battery is
fully charged)
(5) connected to the battery charge.
(1,2,3,4 step is: input termination power, output
unloaded battery is not connected)
3. Use a high-power LED constant current driver
module
(1) determine the work you need to drive the LED current
and the maximum operating voltage;
(2) No-load condition, the multimeter to measure the
output voltage of the constant voltage potentiometer to adjust the
output voltage reaches the LED maximum working
voltage;
(3) 10A current with a multimeter measuring the output
short-circuit current gear while adjusting the constant current
potentiometer allows the output current reaches a predetermined LED
working current;
(4) connected to the LED, the test machine.
(Steps 1 through 3 are: input connected to the power
supply, the output load is not connected LED.)
Note: This module is more than 3A, 35W in use, to
enhance heat dissipation! ! !