Select Page

DC-DC very high efficiency BUCK micro-regulator – with fixed or variable output voltage and current; built-in or external or controllable settings

Input: 8.5 to 55V; output: 4V / 100W to 40V / 400W

This micro buck regulator, ideal for charging various batteries, is housed in an all-aluminum case and molded in a resin that homogenizes its internal temperature and makes it insensitive to humidity (IP67), dust, shocks and vibrations. It delivers:

  • an available power of 100W under 4V, up to 400W under 40V
  • a current of 25A to 10A, as the output voltage increases from 4V to 40V

To optimize the performances of this micro controller (efficiency up to 98%), please see the table in the PDF technical datasheet; it directly determines the most suitable operating modes:

  • output current “Iout max” according to chosen “Vout”
  • (extrapolated) knowledge of efficiencies, according to “Iout” and “Vout”
DC-DC very high efficiency BUCK controller small size with output up to 400W

INPUT VOLTAGE Vin : any voltage, from 8.5V to 55V, necessarily a few volts higher than the chosen output

 

OUTPUT VOLTAGE Vout and possible choices:

  • either adjustable from 4 to 40V with inbuilt “10 rounds” trimmer of diameter 3mm
  • or controllable by 1V to 10V, from 4V to 40V; ex: 5V → 20V
  • or adjustable from 4 to 40V by external resistor of 15kΩ to 80Ω
  • or factory-set fixed value, previously chosen

 

OUTPUT CURRENT Iout:

  • 0 to 25A, according to the load and optimizations of the table, for Vout equal to or higher than 3V
  • examples of maximum permitted currents for Vout = 24V:
    • Iout max = 14A for Vin minimized at 27V; efficiency = 97%
    • Iout max = 13A for Vin fixed at 41V; efficiency = 96%
    • Iout max = 12A for Vin increased at 55V; efficiency = 95%
  • adjustable from 2.5A to 25A with inbuilt trimmer having a “10 rounds” axis of diameter 3mm
  • or controllable by 1 to 10V, from 2.5 to 25A; ex: 5V → 12.5A
  • or linearly adjustable (1A/Ω) from 2.5 to 25A, with external R of 2.5 to 25Ω
  • or factory-set on a fixed value (ex: 14A), for Vout fixed at 24V

NB: stability, at constant current, better than 2%, Vout varying from 3V to Vout max.

 

ISOLATION : no; -Vin and -Vout terminals are internally connected

 

LINE and LOAD REGULATIONS: better than 2%

 

RESIDUAL : < 0.5% of Vout

 

SWITCHING FREQUENCY : approximately 390kHz

 

ON / OFF and remote regulation S+ : options

 

THERMAL CHARACTERISTICS

  • thermal resistance of the case: 6°C / W
  • maximum case temperature: 100°C
  • storage temperature: -50°C to +120°C
  • suggested heatsink: black aluminum, 150 x 150 x 2mm (thermal resistance: approximately 2°C / W)

 

CASE

  • all aluminum; 50.5 x 50.5 x 26 mm
  • weight: 140g
  • fastening: 2 unthreaded through-holes of diameter 4.2mm, and 2 M4 blind-holes on support side, center-to-center distances: 40.5 x 40.5 mm

 

SCREW TERMINAL BLOCK

  • for “power” connections: PhÅ“nix, 4 connections 8mm2
  • additive connections: 4 or 5 connections for wires of diameter up to 1.8mm

 

STANDARDS and SPECIFICATIONS

  • CSA / 60950-1 / RoHS
  • MTBF > 2.106 hours, at full load, base at 45°C

 

IMPORTANT: To see the available versions, options, examples, applications (controlled automatism, double safety battery charging, heat treatments with external manual settings), please download the PDF datasheet.

Subscribe To Our Newsletter

Please join our mailing list to receive the latest news from our company, about our recently released innovative products.

You have Successfully Subscribed!