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A step up voltage regulator generates a regulated output voltage that is higher than the input voltage.

Purpose

Able to convert a low voltage into higher voltage, within a reduced volume, and with a high efficiency (95%), this boost converter can advantageously replace conventional dc/dc converters when input/output insulation is not required.

Moreover, if your starting current is very high, the technique of elevation enables the switching, almost directly and immediately, from the source (battery) to the load, while a typical converter can collapse.

General Presentation

The active part ("brick" type case) of the step-up regulator measures 120 x 64 mm (i.e. not counting high-performance screw connectors for wires of section 72mm2) and is thus compatible with regular brick modules.

The passive cooling method was chosen by the customer. A first special heatsink/dissipater (225 x 120 x 37 mm) receives the "brick" case. An optional second one "S type" of same dimensions can be placed symmetrically.

Electrical Data

Power output (Pout): 900W / 1200W peak

Input voltage Vin: 12V to 16V

Common input and output, occupying the 2 "-" connection terminals

Output voltage V out: 24V / 38A / 50A peak

If V in becomes lower than 12V, this decrease is transmitted to V out (example: V in = 10V  V out = 22V)

Input current: 106A maximum, under 12V

Minimum load current: zero

Line + load regulation: better than 2%; dynamic answer < 5% / <50ms

Efficiency at 900W: 95% (> 96% at half load)

Ripple: less than 1% of V out; fixed switching frequency 230 kHz

Protections

Limited overloads: by hiccup as long as V in / load remains < 62A

Abnormal overloads: please add a fuse or current limiter on the output or input

Under voltage (< 9.5V) or overvoltage (> 17V): the regulator no longer elevates the input voltage

Filters: input and output

Thermal protection: lowering of V out at V in – 0.5V (automatic reset)

Vibrations, tropicalisation, iP67 sealing: with molding

Stainless steel for the high-performance wire-connectors

Ohmic wire loss reduction, with connectors receiving sections up to 72mm2

Thermal Characteristics

Storage temperature: - 40°C to + 100°C. Temperature coefficient: 2.10-4 / °C

Losses under 900W: = 48W

Max. ambient temperature (under 900W), the "brick" case being equipped with:

·         1 dissipater 225 x 120 x 37 mm (thermal resistance 1.5°C / W): 20°C

·         2 dissipaters (thermal resistance 0.75°C / W): 55°C

·         pulsed air (2m / s) divides by two the thermal resistance

Mechanical Presentation ..

"Brick" case mounted in a heatsink/dissipater "type 225"

This dissipater can be doubled (optional) by an identical symmetrical one ("type S")

"Type S" dissipater can be equipped by an optional RAIL-din clip on its large side (225 x 120 mm)

Moreover, all dissipaters can be equipped with a special RAIL-din clip on the side 225 x 37 mm

Weight of the "brick" alone: 590g; weight of a "type 225" dissipater: < 800g

Standards and Specifications

Marking CE / UL 60950-1/EN 60950-1 / iEC 60950-1 / RoHS

Flammability: horizontal test for electrical applications, according to UL 94 HB standard

MTBF (case at 50°C): > 120 000 hours

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The purchaser of these items must ensure that they are satisfactory for use in the application for which they are intended.
No responsibility can be accepted by the manufacturers if any products are incorrectly or inadequately fitted. Goods may not be exact to image shown.