ECRI Microelectronics

MNDX121R5S Non-isolated Point of Load DC to DC Converters (POL)

1 Features of MNDX121R5S Non-isolated Point of Load DC/DC Converters (POL)

Input DC Voltage range(Continuous):16~38V


Typical input DC voltage:28V

Output voltage:12V

Output power:300W

Temperature(Tc):-55~100℃

BUCK topological structure, PWM Control

2. Scope of application of MNDX121R5S Non-isolated Point of Load DC to DC Converters (POL)

MNDX121R5S DC to DC Converter is used in aerospace and high reliable electronic system.

3. Descriptions of MNDX121R5S Non-isolated Point of Load DC to DC Converters (POL)

MNDX121R5S DC to DC Converter uses buck topological structure. Circuit which contains input filter, PWM control, reactive circuit and so on. Circuit also has protect function for over-current and under-voltage to improve the reliability of the product.
This product is made by module circuit structure; it’s used by PCB surface assembly process, no embedment, package is used by 2014 mucilage glue, gushing three proofing, and copper shell.

4. Technical Specifications of MNDX121R5S Non-isolated Point of Load DC to DC Converters (POL)

Form 2 Rated condition and recommended condition

Absolute max rating

Recommended condition

Input voltage:38V

Output power:18W

Storage temperature:-65~105℃

Leads resistance welding temperature(10s):< 300℃

Junction temperature:<150℃

Input voltage:16~38V

(Tc)working temperature  range(Tc):-55~100℃


Form 3 Electrical Characteristic

No.

Characteristic

Symbol

Conditions

(otherwise specified,-40℃≤Tc≤85℃,VIN=28V±0.5V)

Limit value

Unit

min

max

1

Output voltage

Vo

VI=16V-38V,Io=0.1A-1.5A

11.85

12.15

V

2

Output current

Io

VI=16V-38V

0.1

1.5

A

3

Output ripple voltage(peak-peak)

VP-P

TA=25℃,BW≤20MHz,full load

-

100

mV

4

Voltage regulation rate

Sv

Full load,VI=16V 38V

-

0.5

%

5

Load regulation rate

SI

Io=0.1A 1.5A

-

1

%

6

Efficiency

η

TA=25℃,full load

88

-

%

Output in parallel capacitance with 0~10μF.

5. Circuit block diagram of MNDX121R5S Non-isolated Point of Load DC to DC Converters (POL)

MNDX121R5S-2
Fig  2 Product elementary diagram

6. Typical characteristic curve of MNDX121R5S Non-isolated Point of Load DC to DC Converters (POL)

MNDX121R5S-3
Fig  3  Efficiency(output power)

7.MTBF curve of MNDX121R5S Non-isolated Point of Load DC to DC Converters (POL)

MNDX121R5S-4
Char 4  MTBF Temperature Curve
(Prediction is based on well grounded )

8. Pin Designation of MNDX121R5S Non-isolated Point of Load DC to DC Converters (POL)

MNDX121R5S-5
Fig  5 Upward view

Form 4 lead function  declaration

No.



Symbol

Function

1

VI

Inputpositive

2

GND

Input Output common

3

Vo

Output 12V

4

GND


C

Package common

5

GNDC

Package common


9. Typical Connection Diagram of MNDX121R5S Non-isolated Point of Load DC to DC Converters (POL)

MNDX121R5S-6
Fig  6  Electrical testing wiring diagram

10.Package Specifications of MNDX121R5S Non-isolated Point of Load DC to DC Converters (POL)

MNDX121R5S-7
Fig  7 package outline drawing(upward view)

Form 5  Package Outline

Symbol

Data/mm

Min

Typical

Max

A

-

-

22.86

B

-

-

23.87

C

-

-

7.87

Ψd

0.47

-

0.73

e1

-

2.54

-

e2

-

5.08

-

e3

-

11.4

-

e4

-

25.4

-

F1

1.0

-

1.6

F1

0.1

-

0.7

L1

3.55

-

-

L2

1.15

-

1.75

Note: Size for a e1 e2 e3 e4 is guaranteed by manufacturing of packages, do not have inspection requirements.

11. Ordering Information of MNDX121R5S Non-isolated Point of Load DC to DC Converters (POL)

MNDX121R5S-8
Fig  8 Ordering Information


Application Notes:


  • The influence of external disturbance on the test accuracy should be avoided.
  • The voltage detection point should be kept at the root of the pin of the testing product.
  • Do not plug the product with electricity.
  • Before power the testing product, you must confirm the polarity of the power supply to avoid damaging products by misconnection. At the same time, please ensure that the power supply voltage and load current does not exceed using limitation of the testing product.
  • When using the shell temperature can not exceed the specified temperature, or to increase the use of heat sink.
  • When ordering this device,the detailed electrical specifications shall be based on relevant standards.




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