DHY29-[48]24/10 type DC-DC converter schematic diagram

Nowadays, most communication equipment has been standardized and unified to use 48V DC power supply. However, there are still a few devices that continue to use 24V DC power supply. Because the required current capacity is small, if a rectifier is used for power supply, a 24V battery pack must be reserved in order to ensure uninterrupted power supply. Obviously it is uneconomical and takes up space in the computer room. Using a DC/DC converter from 48V to 24V is a suitable method to solve this problem. The picture shows the schematic diagram of the DHY29-24/10 DC-DC converter. Its main performance indicators: (1) Nominal value of input DC voltage: 48V Allowed variation range: 41V ~ 51V (2) Nominal value of output DC voltage: 24V/10A Voltage adjustment range: 21.6V～26.4V (3) Voltage stabilization accuracy: ≤±1% (4) Noise voltage Telephone scale noise voltage: ≤2mV, Broadband noise voltage: ≤20mV (3.4kHz～30kHz), Peak-to-peak noise voltage: ≤100mV, discrete frequency noise voltage: ≤5mV (3.4kHz～150kHz) ≤3mV (150kHz～200kHz) ≤2mV (200kHz～500kHz) ≤1mV (0.5MHz～30MHz) (5) Efficiency: ≥80 % (6) Overvoltage, undervoltage, overcurrent protection points and current limiting values. Overvoltage: (29±1)V, Undervoltage: (21±1)V, Overcurrent: (12±1)V Current limit: 10.5A～11A (7) Current sharing error for parallel operation: ≤±5%