Datasheet

ManualsBrandsRecom ManualsBoard Mounted DC / DC ConvertersDC/DC Converter 6.5 ... 72V 5V

www.recom-power.com

REV.: 0/2019 I-1

Features

Switching

Regulator

• Designed for 12V - 60V battery-powered apps

• Wide input range (6.5V - 72V)

• 100V surge withstand

• -40°C to +105°C operation at 48V input, full load

• Short circuit protected

• Efﬁciency up to 83%, no need for heatsinks

R-78HE-0.3

Description

The R-78HE-5.0-0.3 is a low cost switching regulator module in a compact SIP3 package that has been

specially designed for battery-powered use, but will ﬁnd many other high input voltage applications.

The exceptionally wide input voltage and operating temperature range, high MTBF (15 mio. hrs),

tight regulation and low quiescent current consumption makes this converter ideal for 36V/48V

lithium-ion and 12V/24V/48V lead-acid battery-powered applications. The 100V surge withstand

capability means that external voltage clamping circuits can be eliminated and only a simple LC ﬁlter is

needed for Class A and B EMC conformity.

DC/DC Converter

0.3 Amp

SIP3

Single Output

Selection Guide

Part Input Output Output Efﬁciency

(1)

Max. Capacitive

Number Voltage Range Voltage Current @ min. Vin @ max. Vin Load

(2)

[VDC] [VDC] [mA] [%] [%] [µF]

R-78HE5.0-0.3 6.5 - 72 5 300 83 72 470

Model Numbering

Output Voltage Output Current

R-78HE5.0-0.3

Notes:

Note1: Efﬁciency is tested at full load at +25°C ambient

Note2: Max. Cap Load is tested at nominal input and constant resistive load

Speciﬁcations (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)

BASIC CHARACTERISTICS

Parameter Condition Min. Typ. Max.

Internal Input Filter capacitor

Input Voltage Range nom. Vin= 24VDC 6.5VDC 72VDC

Input Surge Voltage 100ms max.

100VDC

Quiescent Current

1.5mA 3mA

Under Voltage Lockout

DC-DC ON

DC-DC OFF

5.3VDC

5.1VDC

Minimum Load 0%

Internal Operating Frequency

nom. Vin= 24VDC 135kHz

Output Ripple and Noise

(3)

20MHz BW 150mVp-p

continued on next page

Notes:

Note3: Measurements are made with a 10µF MLCC across output (low ESR)

Summary of content (4 pages)

PAGE 1
Features • • • • • • Switching Regulator Designed for 12V - 60V battery-powered apps Wide input range (6.5V - 72V) 100V surge withstand -40°C to +105°C operation at 48V input, full load Short circuit protected Efficiency up to 83%, no need for heatsinks Description The R-78HE-5.0-0.3 is a low cost switching regulator module in a compact SIP3 package that has been specially designed for battery-powered use, but will find many other high input voltage applications.
PAGE 2
R-78HE-0.3 DC/DC Converter Series Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated) Power Dissipation vs. Load Efficiency vs. Load 0.35 100 0.30 Power Dissipation [W] 90 Efficiency [%] 80 70 60 50 40 0.25 0.20 0.15 0.10 30 0.
PAGE 3
R-78HE-0.3 DC/DC Converter Series Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated) ENVIRONMENTAL Parameter Condition Operating Temperature Range Value full load, 48Vin refer to derating graph @ natural convection 0.1m/s -40°C to +105°C -40°C to +115°C Maximum Case Temperature 120°C Temperature Coefficient 0.02%/K Thermal Impedance 0.1m/s, horizontal 37K/W Operating Altitude 2000m Operating Humidity non-condensing 5% - 95% RH max.
PAGE 4
R-78HE-0.3 DC/DC Converter Series Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated) DIMENSION AND PHYSICAL CHARACTERISTICS Parameter Type Value Material case potting PCB non-conductive black plastic, (UL94 V-0) epoxy, (UL94 V-0) FR4, (UL94 V-0) 11.5 x 8.5 x 12.5mm Dimension (LxWxH) Weight 2.6g typ. Dimension Drawing (mm) embossed logo 8.5 Pin Connections Pin # Function 1 +Vin 2 GND 3 +Vout Marking 1.0 12.5 11.5 0.75±0.10 3.21 0.25±0.