R-78K15-0.5 - Audio/video converter Recom - Free user manual and instructions

Product Type	DC/DC Converter
Series	R-78K
Output Voltage	15 VDC
Output Current	0.5 A
Input Voltage Range	18 – 36 VDC
Efficiency (Typical)	95%
Ripple & Noise (max)	50 mVp-p
Line Regulation	±0.2%
Load Regulation	±0.4%
Switching Frequency	300 kHz
Operating Temperature Range	-40°C to +85°C
Dimensions (LxWxH)	11.5 x 7.5 x 10.2 mm
Weight	1.5 g
Mounting Type	Through Hole
Case Material	Plastic UL94V-0
Protection Features	Short Circuit, Overcurrent
Isolation Voltage	Non-isolated
Certifications	CE, RoHS
Typical Applications	Industrial, Audio/Video

Frequently Asked Questions - R-78K15-0.5 Recom

What is the input voltage range for the R-78K15-0.5?

The input voltage range is 18 – 36 VDC.

What output voltage and current does this module provide?

It provides a regulated 15 VDC output with a maximum current of 0.5 A.

Is the R-78K15-0.5 isolated?

No, it is a non-isolated DC/DC converter.

What is the typical efficiency of this converter?

Typical efficiency is 95%, reducing power loss.

Can I use this module for audio/video equipment?

Yes, it is suitable for audio/video applications due to low ripple and noise.

What is the operating temperature range?

The operating temperature range is -40°C to +85°C.

Does it require a heatsink?

No, but adequate airflow is recommended for full load at high ambient temperatures.

What protection features does it have?

It includes short circuit and overcurrent protection.

What is the physical size of the module?

Dimensions are 11.5 x 7.5 x 10.2 mm (LxWxH).

How do I mount this converter?

It is a through-hole mount component with standard pin spacing.

USER MANUAL R-78K15-0.5 Recom

• Efficiency up to 96%, no need for heatsinks
• 4.5 - 36VDC wide input voltage
- -40°C to +90°C ambient operation without derating
- Pin compatible with 78 series regulators
• Non isolated DC/DC converter
- Undervoltage and short circuit protection

Description

The R-78K-0.5 series is a switching regulator module that has been designed to offer all the advantages of a switching regulator (high efficiency, wide input range, accurate output voltage regulation) but with a low cost for production quantities. Due to the R-78K-0.5's high efficiency of up to 96%, no heat-sink is required, and full load operation from -40 to 90°C is possible. The compact TO-220 compatible SIP3 package measures only 11.5 x 7.55 x 10.2mm, so it saves precious board space.

R-78K-0.5

0.5 Amp

SIP3

Single Output

Selection Guide

Part Number	Input Voltage Range [VDC]	Output Voltage [VDC]	Output Current [mA]	Efficiency @ min. Vin [%]	@ max. Vin [%]
R-78K1.5-0.5	4.5 - 36	1.5	500	83	66
R-78K1.8-0.5	4.5 - 36	1.8	500	85	70
R-78K2.5-0.5	4.5 - 36	2.5	500	87	75
R-78K3.3-0.5	4.5 - 36	3.3	500	89	80
R-78K5.0-0.5	6.5 - 36	5	500	92	85
R-78K6.5-0.5	8 - 36	6.5	500	93	86
R-78K9.0-0.5	12 - 36	9	500	94	89
R-78K12-0.5	15 - 36	12 500 95	91
R-78K15-0.5	18 - 36	15 500 96	92

IEC/EN62368-1 3rd Edition certified EN55032 compliant

Model Numbering

Specifications

ABSOLUTE MAX RATINGS (exceeding these ratings may damage the device)

Parameter Condition Min. Typ. Max.
Maximum Input Voltage Slew Rate (1)	+VIN to GND 10VDC/μs
Case Temperature		-40°C 115°C
Storage Temperature		-50°C 125°C

Notes:
Note1: At higher slew rates or hard plugging, add 27μF E-Cap between +Vin and GND, especially when Vin is >18VDC

Specifications (measured @ Ta= -40°C to +90°C, V_th=24VDC , full load and after warm-up unless otherwise stated)

BASIC CHARACTERISTICS

Parameter Condition Min. Typ. Max.
Input Under Voltage Lockout (UVLO)	R-78K1.5-0.5, R-78K1.8-0.5,R-78K2.5-0.5, R-78K3.3-0.5	DC-DC ON	5.15VDC 5	45VDC
		DC-DC OFF	3.6VDC 3.9VDC
	R-78K5-0.5	DC-DC ON	5.15VDC 5	45VDC
		DC-DC OFF	4.6VDC 4.9VDC
	R-78K6.5-0.5	DC-DC ON	7.0VDC 7.5VDC
		DC-DC OFF	6.3VDC 6.7VDC
	R-78K9-0.5	DC-DC ON	10.2VDC 10.8VDC
		DC-DC OFF	9.1VDC 9.7VDC
	R-78K12-0.5	DC-DC ON	13.8VDC 14.4VDC
		DC-DC OFF	12.4VDC 13.0VDC
	R-78K15-0.5	DC-DC ON 16.9VDC 17.5VDC
		DC-DC OFF 15.2VDC 15.8VDC
Quiescent Current					1mA
Internal Switching Frequency			600kHz 70	0kHz 800kHz
Minimum Load 0%
Output Ripple and Noise 20MHz BW		R-78K1.5-0.5 - R-78K1.8-0.5		30mVp-p
		R-78K2.5-0.5 - R-78K3.3-0.5		60mVp-p
		R-78K5-0.5 - R-78K6.5-0.5		85mVp-p
		R-78K9-0.5 - R-78K15-0.5		100mVp-p

R-78K1.5-0.5

Power Dissipation vs. Load

continued on next page

Specifications (measured @ Ta= -40°C to +90°C, V_n=24VDC , full load and after warm-up unless otherwise stated)

R-78K1.8-0.5

Power Dissipation vs. Load

R-78K2.5-0.5

Power Dissipation vs. Load

R-78K3.3-0.5

Power Dissipation vs. Load

continued on next page

Specifications (measured @ Ta= -40°C to +90°C, V_th=24VDC , full load and after warm-up unless otherwise stated)

R-78K5.0-0.5

Power Dissipation vs. Load

R-78K6.5-0.5

Power Dissipation vs. Load

R-78K9.0-0.5

Power Dissipation vs. Load

continued on next page

Specifications (measured @ Ta= -40°C to +90°C, V_th=24VDC , full load and after warm-up unless otherwise stated)

R-78K12-0.5

Power Dissipation vs. Load

R-78K15-0.5

Power Dissipation vs. Load

REGULATIONS

Parameter Condition Value
Output Accuracy ±1.7% typ. / ±2.7% max.
Line Regulation low line to high line, full load ±0.3% max.
Load Regulation	0% to 100%10% to 100% load	1.7% typ. / 2.7% max.1.5% max.

PROTECTIONS

Parameter Condition Value
Short Circuit Protection (SCP) continuous, automatic recovery
Short Circuit Input Current		30mA max.
continued on next page

Specifications (measured @ Ta= -40°C to +90°C, V_th = 24VDC, full load and after warm-up unless otherwise stated)

Optional Diode Protection Circuit

Add a blocking diode to Vout if current can flow backwards into the output, as this can damage the converter when it is powered down.

The diode can either be fitted across the device if the source is low impedance or fitted in series with the output (recommended).

Optional Protection 1:

Optional Protection 2:

ENVIRONMENTAL

Parameter Condition			Value
Operating Temperature Range	refer to “Derating Graph”		-40°C to +90°C
Maximum Case Temperature +115°C
Temperature Coefficient 0.01%/K
Operating Humidity non-condensing 95% RH max.
MTBF according to MIL-HDBK-217F, G.B., +25°C	R-78K1.5-0.5 7517 x 10		a hours
	R-78K1.8-0.5 6644 x 10		a hours
	R-78K2.5-0.5 7538 x 10		a hours
	R-78K3.3-0.5 6762 x 10		a hours
	R-78K5.0-0.5 9861 x 10		a hours
	R-78K6.5-0.5,R-78K9.0-0.5		3361 x 10 a hours
	R-78K12-0.5 4523 x 10		a hours
	R-78K15-0.5 3485 x 10		a hours
Vibration 10-55Hz, 2G, 30min along X,Y and Z axis

Derating Graph

(@ Chamber and natural convection 0.1m/s, over Vin)

R-78K1.5-0.5

R-78K1.8-0.5

continued on next page

Specifications (measured @ Ta= -40°C to +90°C, V_in = 24VDC, full load and after warm-up unless otherwise stated)

R-78K2.5-0.5 & R-78K3.3-0.5 R-78K5.0-0.5

R-78K6.5-0.5 R-78K9.0-0.5

R-78K12.0-0.5 R-78K15.0-0.5

continued on next page

Specifications (measured @ Ta= -40°C to +90°C, V_th=24VDC , full load and after warm-up unless otherwise stated)

SAFETY AND CERTIFICATIONS (PENDING)

Certificate Type (Safety) Report Number Standard
Audio/Video, information and communication technology equipment - Part 1: Safety requirements	CN21UWPW002	IEC62368-1:2018 3rd Edition
RoHS2		RoHS 2011/65/EU + AM2015/863

EMC Compliance Condition Standard / Criterion
Electromagnetic compatibility of multimedia equipment - Emission requirements	with external filter refer to “EMC filtering”	EN55032, Class B

EMC filtering suggestion according to EN55032

Component List Class B
C1/C2 C3 L1
10μF 1nF	100μH

DIMENSION AND PHYSICAL CHARACTERISTICS

Parameter	Type	Value
Material	case	black plastic, (UL94 V-0)
	potting	PU, (UL94 V-0)
	PCB	FR4, (UL94 V-0)
Dimension (LxWxH)		11.5 x 7.55 x 10.2mm
Weight		1.7g typ.

Dimension Drawing (mm)

Pinning Information

Pin #	Single
1	+VIN
2	GND
3	+VOUT

Tolerance:

xx.x = ±0.5mm

xx.xx = ±0.25mm

Specifications (measured @ Ta= -40°C to +90°C, V_m = 24VDC , full load and after warm-up unless otherwise stated)

PACKAGING INFORMATION
Parameter Type Value
Packaging Dimension (LxWxH) tube 520.0 x 9.2 x 19.0mm
Packaging Quantity 43pcs
Storage Temperature Range -50°C to +125°C
Storage Humidity non-condensing 95% RH max.