DC-DC 20A 300W buck constant voltage constant current adjustable car power supply LM25116
Tags : power supply, step-down, แหล่งจ่ายไฟ, dc to dc, LM2596, DC-TO-DC Step up, DC-TO-DC step down, คอนเวอเตอร์, regulator, positive negative, breadboard supply, LM2576, L7805, MP2307, MP1584EN Synchronous rectification technology
introduction: Synchronous rectification is a new technology that uses dedicated power MOSFETs with extremely low on-state resistance to replace rectifier diodes to reduce rectification losses It can greatly improve the efficiency of the DC / DC converter and there is no dead zone voltage caused by the Schottky barrier voltage The power MOSFET is a voltage-controlled device, and its volt-ampere characteristic is linear when it is turned on When the power MOSFET is used as the rectifier, the gate voltage must be synchronized with the phase of the rectified voltage to complete the rectification function, so it is called synchronous rectification Synchronous rectification technology is to greatly reduce the rectification loss of the output end of the switching power supply, thereby improving the conversion efficiency and reducing the heating of the power supply itself Module
parameters: Module
nature: synchronous rectification non-isolated buck constant current constant voltage module CC CV charging module Scope of
application: high-power LED constant current drive, lithium battery charging (including ferroelectric), 4V, 6V, 12V, 14V, 24V battery charging, nickel-cadmium nickel-hydrogen battery (battery pack) charging, solar panels, wind turbines Input
voltage: DC6-40V Output
voltage: continuously adjustable (1.2-35VDC) below 32V for a long time (applicable to applications where the input voltage is higher than the output voltage cannot be boosted) Output
current: Maximum 20A within 15A for a long time (please add a fan to dissipate the heat if the temperature of the power tube exceeds 65 degrees, please derate for high voltage output) Current limit
range: 0.2-20A (adjustment) module exceeds 65 degrees, please add a fan Minimum pressure
difference: 3V Working
frequency: 150KHZ Conversion
efficiency: up to about 96% efficiency is related to pressure difference and use environment Output
ripple: Ripple is about 50mV (no noise included) 20M bandwidth (for reference only) input 24V measured Working
temperature: -10 to 75 ) (Please pay attention to the temperature of the power tube in actual use, if the temperature is too high, please strengthen the heat dissipation or derating) Potentiometer adjustment
direction: clockwise (increasing), counterclockwise (decreasing) Output short-circuit
protection: Yes (instantaneous protection) constant current (currently set constant current value cannot be short-circuited for a long time ) Input reverse connection
protection: none, Output
anti-backflow: No, for load self-charged or inductive load requires 2 extra tubes Wiring
method: terminal Module