Adjustable DC-DC Buck-Boost Converter 400W

Input voltage: 17 to 85V  •  Output voltage: 18 to 60V (adjustable)  •  Efficiency: 94 to 96%

The ease of use of this converter-regulator, both step-down and step-up, simplifies the usual problems of DC-DC energy conversion. Main characteristics of this adjustable buck-boost converter:

• Accepts any input voltage, from 17 to 85V
• Delivers any output voltage, from 18 to 60V
• Generates 400W, with a very high efficiency, up to >96%
• With optional functions, adjustable or controllable
• Benefits from our free assistance “integration and control”
• Compact and with multiple mechanical presentations.

Exemples of applications using our innovative universal buck-boost converter regulator DC-DC:

Technical Data for this adjustable BuckBoost Converter 400W

ELECTRICAL CHARACTERISTICS

• Input voltage “V_in“: 17 to 85V (accidental maximum: 86V)
• Zero of input and output: common
• Output voltage “V_out“: 18 to 60V
  • manual adjustment with inbuilt 10-turn axis (trimmer)
  • factory setting upon request
  • external adjustment through a resistance (optional)
  • control according to chosen V_out range (optional)
• Output power “P_out“: 400W, independently of V_out (24 to 60V) and V_in (17 to 85V)
• Output current “i_out“: 0 to 17A
  • i_out max (7 to 17A) determined by your choice of output voltage and under power 400W
  • standard limitation of i_out : by hiccup, as soon as P_out reaches ≈ 405W
  • optional limitation of i_out by constant current, from <1A to 17A, with adjustment: either with inbuilt axis “10 rounds”, or external, or with controllable range
• Line and load regulation: better than 5.10^-3
• Nominal efficiency: 94 to > 96%
• Startup time: < 250 ms
• Dynamic response time (i_out = 50 to 100%): < 1 ms
• Ripple: ≤ 1% of V_out
• Switching frequency: fixed ≈ 230 kHz

PROTECTIONS

• Protection against overloads and short-circuits: standard, by hiccup (pulsing i_out), ≈ 2.5A RMS
• Optional complementary limitation at constant current, adjustable from <1A to 17A, for V_out ≥ 18V
• Thermal protection (automatic reset)
• Vibrations and shocks: sealing IP65 to IP67 (depending on the chosen presentation)

THERMAL PERFORMANCES

• Storage / Operation: – 55°C to + 115°C / – 40°C to + 85°C
• Temperature coefficient: 2.10^-4 / °C
• Thermal resistances “Rt”: 7°C/W to 2°C/W, depending on chosen case
• How to calculate temperature rise “ΔT°” with natural convection:
  • ΔT° = losses (in W) x Rt (in °C/W)
  • Losses ≤ 25W for P_out = 400W (and ≤ 10W for P_out = 100W), as the minimum efficiency varies from >94% to >91% when P_out varies from 400W to 100W
  • ΔT° is divided by 2 with pulsed air at 2m / s

STANDARDS & SPECIFICATIONS

• Marking CE; UL60950-1 / EN60950-1; RoHS
• MTBF: > 500 000 hours at 25°C

OPTIONS

• Please see paragraphs “output voltage” and “output current”
• “On / off” remote control
• Other presentations

Mechanical Presentations – Casings

Optional heatsinks / dissipators ≤ 1.5°C / W, available upon request.

PDF presentation here for this DC-DC BUCK-BOOST converter regulator.

Please also see our Universal buck-boost regulator 2.8kW DC-DC  -  Constant Voltage or Constant Current Generator  -  Input: 8 to 60V / 50A; output: 0 to 60V / 0 to 50A / 2.8k

Currently in development: Mini-Regulators with very high efficiency,

• buck ≤ 350W; input: 12 to 36V; output ≤ Vin – 3V; efficiency: up to 98%
• boost 120W; input: 9 to 15V; output: 24 or 36 or 48V; efficiency: up to 95%.