Dual Output

+Vo

PWM

Isolation

Ref.Amp

Filter

+Vin

-Vin

Com.

-Vo

Single Output

PWM

Isolation

Ref.Amp

Filter

+Vin

-Vin

-Vo

+Vo

Block Diagram

Wide Range

2:1

EN55022

EMI

I/O Isolation

1500

VDC

Low Cost

Minmax's MKW1000 series of DC/DC converters, comprising 24

different models, is designed for a wide range of applications including
data communication equipments, mobile battery driven equipments,
distributed power systems, telecommunication equipments, mixed
analog/digital subsystems, process/machine control equipments,
computer peripheral systems and industrial robot systems.

Packing up to 10W of power into a 2x1x0.4 inch package, with

efficiencies as high as 83%, the MKW1000 has wide input ranges of
9-18VDC, 18-36VDC and 36-75VDC and is available in output voltages
of 3.3V, 5V, 12V, 15V, 24V, {5V, {12V and {15VDC.

Other feathers include continuous short circuit protection, six-sided

shielded case and EN55022 Class A conducted noise compliance
minimize design-in time, cost and eliminate the need for external
filtering.

Internal SMD Construction

Industry Standard Pinout

Temperature Performance -40] to +71]

Six-Sided Shielding

Complies with EN55022 Class A

UL1950 Safety Approval

2:1 Wiide Input Range

MTBF > 700,000 Hours

1500VDC Isolation

Efficiency up to 83%

Key Features

10W, Wide Input Range, Single & Dual Output DC/DC Converters

MKW1000 Series

REV:0 2005/04

MINMAX

251

{17

{333

{15

MKW1048

251

{21

{416

{12

MKW1047

257

{50

{1000

MKW1046

251

416

MKW1045

252

670

MKW1044

253

830

MKW1043

260

100

2000

MKW1042

217

120

2400

3.3

( 36 ~ 75 )

MKW1041

507

{17

{333

{15

MKW1038

507

{21

{416

{12

MKW1037

521

{50

{1000

MKW1036

501

416

MKW1035

511

670

MKW1034

506

830

MKW1033

534

100

2000

MKW1032

434

120

2400

3.3

( 18 ~ 36 )

MKW1031

1041

{17

{333

{15

MKW1028

1027

{21

{416

{12

MKW1027

1068

{50

{1000

MKW1026

1027

416

MKW1025

1047

670

MKW1024

1038

830

MKW1023

1082

100

2000

MKW1022

917

120

2400

3.3

( 9 ~ 18 )

MKW1021

% (Typ.)

mA (Typ.)

VDC

@Max. Load

@No Load

@Max. Load

Min.

Max.

Efficiency

Reflected

Ripple

Current

Input Current

Output Current

Output

Voltage

Input

Voltage

Model

Number

Model Selection Guide

EN55022 Class A

Conducted EMI

Six-Sided Shielded, Metal Case

RFI

Free-Air Convection

Cooling

---

Humidity

]

+125

-40

Storage Temperature

]

+90

-40

Case

Operating Temperature

]

+71

-40

Ambient

Operating Temperature

Unit

Max.

Min.

Conditions

Parameter

Environmental Specifications

Exceeding the absolute maximum ratings of the unit could cause damage.

These are not continuous operating ratings.

5,000

---

Internal Power Dissipation

]

260

---

Lead Temperature (1.5mm from case for 10 Sec.)

VDC

100

-0.7

48VDC Input Models

VDC

-0.7

24VDC Input Models

VDC

-0.7

12VDC Input Models

Input Surge Voltage

( 1000 mS )

Unit

Max.

Min.

Parameter

Notes :

1. Specifications typical at Ta=+25], resistive load,

nominal input voltage, rated output current unless

otherwise noted.

2. Transient recovery time is measured to within 1%

error band for a step change in output load of 75%

to 100%.

3. Ripple & Noise measurement bandwidth is 0-20

MHz.

4. These power converters require a minimum

output loading to maintain specified regulation.

5. Operation under no-load conditions will not

damage these modules; however, they may not

meet all specifications listed.

6. All DC/DC converters should be externally fused at

the front end for protection.

7. Other input and output voltage may be available,

please contact factory.

8. Specifications subject to change without notice.

Absolute Maximum Ratings

MKW1000 Series

MINMAX

REV:0 2005/04

K Hours

---

700

MIL-HDBK-217F @ 25], Ground Benign

MTBF

KHz

340

300

260

Switching Frequency

470

150

---

100KHz,1V

Isolation Capacitance

---

1000

500VDC

Isolation Resistance

VDC

---

1650

Flash Tested for 1 Second

Isolation Voltage Test

VDC

---

1500

60 Seconds

Isolation Voltage Rated

Unit

Max.

Typ.

Min.

Conditions

Parameter

General Specifications

Continuous

Output Short Circuit

%/]

{0.02

{0.01

---

Temperature Coefficient

---

Transient Response Deviation

300

150

---

25% Load Step Change

Transient Recovery Time

---

120

Over Power Protection

mV rms

---

Ripple & Noise (20MHz)

mV P-P

100

---

Over Line, Load & Temp.

Ripple & Noise (20MHz)

mV P-P

---

Ripple & Noise (20MHz)

{0.5

{0.1

---

Io=10% to 100%

Load Regulation

{0.3

{0.1

---

Vin=Min. to Max.

Line Regulation

{2.0

{0.5

---

Dual Output, Balanced Loads

Output Voltage Balance

{1.0

{0.5

---

Output Voltage Accuracy

Unit

Max.

Typ.

Min.

Conditions

Parameter

Output Specifications

Pi Filter

Input Filter

4500

3500

---

Short Circuit Input Power

---

All Models

Reverse Polarity Input Current

48V Input Models

24V Input Models

8.5

12V Input Models

Under Voltage Shutdown

48V Input Models

24V Input Models

VDC

8.5

12V Input Models

Start Voltage

Unit

Max.

Typ.

Min.

Model

Parameter

Input Specifications

# For each output

470

2200

Maximum Capacitive Load

Unit

{15V #

{12V #

{5V #

24V

15V

12V

3.3V

Models by Vout

Capacitive Load

MKW1000 Series

REV:0 2005/04

MINMAX

Derating Curve

]

Ambient Temperature

Output Power (%)

100

-40

100

110

400LFM

200LFM

100LFM

Natural

convection

Efficiency vs Output Load ( Dual Output )

Efficiency vs Output Load ( Single Output )

Load Current (%)

Efficiency (%)

100

Load Current (%)

Efficiency (%)

100

Efficiency vs Input Voltage ( Dual Output )

Efficiency vs Input Voltage ( Single Output )

100

Efficiency (%)

Input Voltage (V)

Nom

Low

High

100

Efficiency (%)

Input Voltage (V)

Nom

Low

High

MKW1000 Series

REV:0 2005/04

MINMAX

Test Configurations

Input Reflected-Ripple Current Test Setup

Input reflected-ripple current is measured with a inductor

Lin (4.7uH) and Cin (220uF, ESR < 1.0[ at 100 KHz) to
simulate source impedance.

Capacitor Cin, offsets possible battery impedance.
Current ripple is measured at the input terminals of the

module, measurement bandwidth is 0-500 KHz.

Peak-to-Peak Output Noise Measurement Test

Use a Cout 0.47uF ceramic capacitor.
Scope measurement should be made by using a BNC

socket, measurement bandwidth is 0-20 MHz. Position the
load between 50 mm and 75 mm from the DC/DC Converter.

Design & Feature Considerations

Maximum Capacitive Load

The MKW1000 series has limitation of maximum

connected capacitance at the output.

The power module may be operated in current limiting

mode during start-up, affecting the ramp-up and the startup
time.

For optimum performance we recommend 470uF

maximum capacitive load

for dual outputs and 2200

capacitive load

for single outputs.

The maximum capacitance can be found in the data sheet.

Overcurrent Protection

To provide protection in a fault (output overload) condition,

the unit is equipped with internal current limiting circuitry and
can endure current limiting for an unlimited duration. At the
point of current-limit inception, the unit shifts from voltage
control to current control. The unit operates normally once the
output current is brought back into its specified range.

Input Source Impedance

The power module should be connected to a low

ac-impedance input source. Highly inductive source
impedances can affect the stability of the power module.

In applications where power is supplied over long lines and

output loading is high, it may be necessary to use a capacitor
at the input to ensure startup.

Capacitor mounted close to the power module helps

ensure stability of the unit, it is recommended to use a good
quality low Equivalent Series Resistance (ESR < 1.0[ at 100
KHz) capacitor of a 15uF for the 12V input devices and a
4.7uF for the 24V and 48V devices.

Output Ripple Reduction

A good quality low ESR capacitor placed as close as

practicable across the load will give the best ripple and noise
performance.

To reduce output ripple, it is recommended to use 3.9uF

capacitors at the output.

MKW1000 Series

MINMAX

REV:0 2005/04

+Out

-Out

+Vin

-Vin

DC / DC

Converter

Load

Battery

Lin

Cin

To Oscilloscope

Current

Probe

+Out

-Out

+Vin

-Vin

Dual Output

DC / DC

Converter

Resistive

Load

Scope

Copper Strip

Cout

Com.

Scope

Cout

+Out

-Out

+Vin

-Vin

Single Output

DC / DC

Converter

Resistive

Load

Scope

Copper Strip

Cout

+Out

-Out

+Vin

-Vin

DC / DC

Converter

Load

DC Power

Source

Cin

+Out

-Out

+Vin

-Vin

Load

DC Power

Source

Cout

Com.

Dual Output

DC / DC

Converter

+Out

-Out

+Vin

-Vin

Load

DC Power

Source

Cout

Single Output

DC / DC

Converter

The MKW1000 converter is encapsulated in a low thermal resistance molding compound that has excellent resistance/electrical

characteristics over a wide temperature range or in high humidity environments.

The encapsulant and unit case are both rated to UL 94V-0 flammability specifications.
Leads are tin plated for improved solderability.

UL94V-0

Flammability

32g

Weight

-Vout

Common

No Pin

Metal With Non-Conductive Baseplate

Case Material

+Vout

-Vin

2.0*1.0*0.4 inches

+Vin

50.8*25.4*10.2 mm

Case Size

Dual Output

Single Output

Pin

Physical Characteristics

Pin Connections

{0.002

{0.05

X.XXX{0.005

X.XX{0.13

X.XX{0.01

X.X{0.25

Inches

Millimeters

Tolerance

Dual Output

Single Output

10.2 [0.40]

6.0 [0.24]

50.8

[2.0

15.2

[0.6

10.2 [0.40]

Bottom

Side

10.20 [0.402] 10.20 [0.402]

2.5 [0.10]

20.3

0 [0.

0
0

]

1.00

[ 0.

25.4 [1.00]

5.08 [0.200]

Connecting Pin Patterns

Top View ( 2.54 mm / 0.1 inch grids )

Mechanical Dimensions

MKW1000 Series

MINMAX

REV:0 2005/04

Электронный компонент: MKW1044