K78L15-500R3 [MORNSUN]

Support the negative output;


型号：	K78L15-500R3
厂家：	MORNSUN SCIENCE& TECHNOLOGY LTD.
描述：	Support the negative output
文件：	总4页 (文件大小：1889K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

DC/DC Converter

K78Lxx-500R3 Series

Wide input voltage , non-isolated & regulated single

output

FEATURES

 High efficiency up to 95%

 No-load input current as low as 0.2mA

 Operating temperature range: -40℃ to +85℃

 Support the negative output

 Output short circuit protection

 Pin-out compatible with LM78XX linear regulators

 UL60950, EN60950 approval

RoHS

K78Lxx-500R3 series are high efficiency switching regulators and ideal substitutes of LM78xx series three-terminal linear regulators. The

product is featured with high efficiency, low loss, short circuit protection, support the negative output and no heat sink requirement. They

are widely used in industrial control, instrumentation, and electric power applications.

Selection Guide

Input Voltage (VDC)

Output

Max. Output Current

Efficiency (%/Typ.)

(Min. Vin)/ (Max. Vin) Capacitive

Max.

Part

Certification

Nominal

(Range)

Output Voltage

(VDC)

Number

@Full Load

86/80

Load(µF)

680

(mA)

K78L03-500R3

K78L05-500R3

3.3

5.0

-5.0

500

(4.75-36)

(6.5-36)

(7-31)

(15-36)

(8-24)

(19-36)

680

500

-300

500

90/84

80/81

94/91

84/85

95/93

85/87

330

680

330

680

330

UL/CE

K78L12-500R3

K78L15-500R3

-12

-150

500

-15

-150

(8-21)

Note:For input voltage higher than 30 VDC, a 22uF/50V input capacitor is required.

Input Specifications

Item

Operating Conditions

Positive output

Min.

Typ.

0.2

Max.

1.5

Unit

No-load Input Current

Reverse Polarity Input

Input Filter

Forbidden

Capacitor filter

Output Specifications

Item

Operating Conditions

Min.

Typ.

±2

Max.

±4

Unit

K78L03-500R3

Others

Output Voltage Accuracy

Full load, input voltage range

±2

±0.2

±0.4

±3

±0.4

±0.6

Line Regulation

Full load, input voltage range

Nominal input ,10% -100% load

Load Regulation

Ripple & Noise*

20MHz bandwidth, nominal input, 10% -100% load

mVp-p

%/℃

Operating temperature -40℃～ +85℃

Temperature Drift Coefficient

Transient response deviation

Transient recovery time

Output short circuit protection

±0.03

250

Nominal input, 25% load step change

Nominal input

0.2

Continuous, self-recovery

Note: *1. Ripple and noise tested with “parallel cable” method, please refer to DC-DC Converter Application Notes for specific operation methods;

*2. With the load lower than 10%, the maximum ripple and noise of 3.3V/5V output products will be 150mVp-p, 12V/15V output products will be 2%Vo.

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DC/DC Converter

K78Lxx-500R3 Series

General Specifications

单位

℃

Min.

-40

Typ.

Max.

Item

Operating Conditions

Operating Temperature

Storage Temperature

Derating if the temperature ≥71℃ (see Fig. 1)

-55

125

Pin Welding Resistance Temperature Welding time: 10s (Max.)

260

Storage Humidity

Switching Frequency

MTBF

%RH

Non-condensing

550

850

Full load, nominal input

MIL-HDBK-217F@25℃

KHz

K hours

2000

Physical Specifications

Package Dimensions

10.00*7.20*11.00 mm

Weight

1.0g (Typ.)

Cooling Method

Free air convection

EMC Specifications

CISPR22/EN55022 CLASS B (see Fig. 5-② for recommended circuit)

IEC/EN 61000-4-2 Contact ±4KV

Conducted Disturbance

EMI

Radiated Emission

Electrostatic Discharge

perf. Criteria B

perf. Criteria A

perf. Criteria B

perf. Criteria A

Radiation Immunity

IEC/EN 61000-4-3 10V/m

EMS

EFT

IEC/EN 61000-4-4 ±1KV (see Fig. 5-① for recommended circuit)

IEC/EN 61000-4-6 3Vr.m.s

Conducted Disturbance Immunity

Product Characteristic Curve

Temperature Derating Curve

120

100

The Wind Speed:0.8 m/s

-40

40 71

120

℃

Operating Temperature (

)

Fig. 1

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DC/DC Converter

K78Lxx-500R3 Series

Design Reference

1. Typical application circuit

DC/DC

+Vin

-Vout

GND

+Vin

GND

DC/DC

+Vout

GND

Positive output application circuit

Negative output application circuit

Sheet 1

Fig. 2 Typical application circuit

+Vin

+Vout

DC/DC

C1/C3

C2/C4

Part No.

(ceramic capacitor) (ceramic capacitor)

GND

22μF/10V

K78L03-500R3

22μF/10V

10μF/50V

K78L05-500R3

K78L12-500R3

K78L15-500R3

LDM

-Vout

DC/DC

μF/25V

22μF/25V

Fig. 3 Positive and Negative output parallelling application circuit

Note:

1. C1 and C2(C3 and C4) are required and should be connected close to the pin terminal of the module.

2. The capacitance of C1 and C2(C3 and C4) refer to Sheet 1, it can be increased properly if required, and tantalum or low ESR electrolytic capacitors may also

suffice.

3. When the products used as the circuit like figure 3, an inductor named as LDM up to 10μH is recommended in the circuit to reduce the mutual interference.

4. Cannot be used in parallel for output and hot swap.

To reduce the output ripple furtherly, it is suggested to connect a “LC” filter at the output terminal, and recommended value of L is

10µH-47µH.

+Vin

Vout

DC/DC

负

载

负

载

22 F

GND

Positive output

Negative output

Fig. 4 “LC” filter application circuit

2. EMC solution-recommended circuit

LDM1

LDM2

FUSE

DC/DC

V in

+Vo

Vin

GN D

LOAD

MOV

GN D

①

②

Fig. 5 EMC recommended circuit

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DC/DC Converter

K78Lxx-500R3 Series

FUSE

MOV

LDM1

82µH

C1/C2

LDM2

12µH

Selected based on the actual

input current from the customer

S20K30

680µF /50V

Refer to Sheet 1

4.7µF /50V

Note: Part ① in the Fig. 5 is for EMS test, part ② is for EMI filtering; parts ① and ② can be added based on actual requirement.

3. For more information please find the application notes on www.mornsun-power.com

Dimensions and Recommended Layout

Notes:

1. Packing information please refer to Product Packing Information. Packing bag number: 58010116;

2. The max. capacitive load should be tested within the input voltage range and under full load conditions;

3. Without any special statement,all indexes are only specific to positive output application;

4. Unless otherwise specified, data in this datasheet should be tested under the conditions of Ta=25℃, humidity<75% when inputting

nominal voltage and outputting rated load;

5. All index testing methods in this datasheet are based on our Company’s corporate standards;

6. The performance indexes of the product models listed in this manual are as above, but some indexes of non-standard model products

will exceed the above-mentioned requirements, and please directly contact with our technician for specific information;

7. Specifications of this product are subject to changes without prior notice.

MORNSUN Guangzhou Science & Technology Co., Ltd.

Address: No. 5, Kehui St. 1, Kehui Development Center, Science Ave., Guangzhou Science City, Luogang District, Guangzhou, P. R. China

Tel: 86-20-38601850-8801

Fax: 86-20-38601272

E-mail: info@mornsun.cn

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