DC110V / DC48V 20A communications-specific high-frequency switching power conversion module technical parameters of the project measurement conditions MIN TYP MAX Unit Input voltage range Output 48V / 20A 90 110 140 V power surge input 110V, 15 A full load output voltage range input 110V, 42 53.5 58 V Output current input 110V, output 53.5V 20.0 21 Adc output current limit input 110V 21 A load regulation input 110V, Output 5% to 100% full load 0.5% grid regulation Input 90 ~ 140V output 48V / 20A 0.1% Telephone Heng Heavy noise input 110V, full load 300 ~ 3400HZ 2mV bee-peak noise input 110V, full load 0 ~ 20MHZ 100mV broadband noise input 110V, output 48V / 20A 3.4 ~ 150KHZ 50mV 0.15 ~ 30MHZ 20mV noise discrete input 110V, output 48V / 20A 3.4 ~ 150KHZ 5 mV 150 ~ 200KHZ 3mV 200 ~ 500 KHZ 2mV 0.5 ~ 30MHZ 1mV efficiency input 110V, 85% of full load dynamic response of 20% to 100% step load step 100us 80 ~ 150 V grid 100us Input protection (output 50 % load) Overvoltage protection, shut off the output 140V power grid normal and restore output 135V output overvoltage protection overvoltage protection, turn off the output temperature coefficient 58.5V input 110V, full load 0.000 21 / ℃ operating temperature above 40 ℃ is 50% full load -10 + 50 ℃ Storage Temperature -40 + 85 ℃ MTBF 100,000 hours Weight 7.0Kg protection Input over-voltage protection grid voltage fluctuations large, long-term work to prevent the modules at low or high voltage leads to shortened life or module damage, the module has an input over-voltage protection circuit, there have been automatically locked after a Brown modules, grid voltage is normal, the module can automatically return to work. Output overvoltage protection output voltage is too high for the electrical equipment can cause catastrophic accidents, to prevent such occurrences, within my company's high-frequency module has overvoltage protection circuit, output over occurs automatically locked after pressure module, the corresponding module fault indicator light, fault module automatically deactivated without affecting the normal operation of the entire system. Output current limiting power output of each module is limited, the output current can not grow indefinitely, so each module maximum output current is limited to 1.05 times the rated output current, if overloaded, the module automatically reduce the output voltage to protect the module. Short-circuit protection rectifier module output characteristics shown in Figure 2, the output short circuit in an instant the output voltage down to zero, the short-circuit current limit below the current limit, the module output power is very small, in order to achieve the purpose of the protection module. Modules can be long-term work in a short circuit condition, not damaged, troubleshooting module can automatically return to work. Modules in parallel to protect every internal module has parallel protection circuit, the absolute guarantee fault module automatically exit the system without affecting other normal module. Over-temperature protection over-temperature protection is primarily to protect power converter device, the junction temperature and current overload these devices are safe limit, under normal operating conditions, the system designed to leave sufficient margin, in some special circumstances, such as the environment Under high temperature, fan stall, etc., the module detects heat sink temperature exceeds 75 ℃, automatic shutdown protection, the temperature decreased to 65 ℃ when the module starts automatically. Overcurrent protection overcurrent main power converter device in each cycle of the converter, if the current exceeds the device to an electric current through the closed power devices, to protect the power device purposes. Overcurrent protection can be automatically restored. Measurement function can automatically measure module and the module output voltage and current working status, and through the LCD display, the user can intuitively easy to understand modules and system status.