ECRI Microelectronics

300V Wide Input Series DC DC Converters

1  Features of 300V Wide Input Series DC/DC Converter

Input DC voltage range:180~375V

300V Wide Input Series DC/DC Converter

Typical DC input voltage:300V

Output Voltage:12V,15V,24V,28V,48V

Output power:500W

Operating temperature(TC):-55~100℃

Pin Designation:Replace Vicor Company products

BUCK+LLC topological structure

Constant frequency control 


2 Scope of application of 300V Wide Input Series DC DC Converters

High-reliability electronic system for aviation and aerospace, etc

3 Descriptions of 300V Wide Input Series DC DC Converters

M300A series DC DC converters using full-bridge soft-switching structure, PWM control,The circuit consists of resonant control part, resonant power part, transformer, secondary rectifier filter, feedback circuit etc. The module has input under voltage and output over voltage protection. Output short circuit protection power consumption is very low, can withstand 400V surge voltage impact.
This products for the modular circuit structure, PCB surface assembly process,
Thermal conductivity potting internal, aluminum plate cooling. Outline package can pin to pin replace the second generation module of VICOR.

4 Technical Specifications of 300V Wide Input Series DC DC Converters

Table 2 Rated conditions and recommended operating conditions

Absolute Max. Rating

Recommended working conditions

Input voltage:400V

Output power:500W

Storage temperature:-55~125℃

Lead resistance to welding temperature(10s):less than300℃

Junction temperature:less than150℃

Input voltage:180~375V

Operating temperature(Tc):-55~100℃


Table 3a Electrical characteristics of M300A12M500B

NO.

Items

Symbol

Unless otherwise specified   -55℃≤Tc≤100℃, VIN=270V±10V

Limit value

Unit

Min

Max

1

Input voltage/V

Turn on voltage

VINL-ONT


VINL-OFF


-

178.2

V

Turn off voltage

147.4

-

V

2

Insulation resistance

Riso

TA=25℃,Input, bottom plate and output between any two plus 1000V(DC)

100

-

3

Output voltage

Vo

TA=25℃,Full load

11.88

12.12

V

4

Output current

Io

Full load


41.6

A

5

Voltage regulation

Sv

180V~375V,Full load

-

1

%

6

Load regulation

S1

10% load~full load

-

1

%

7

Temperature coefficient

av

Full load

-

0.02

%/℃

8

Effectiveness

η

TA=25℃,Full load

TA=-55℃,Tc=100℃, Full load

85

-

%

83

-

%

9

Ripple and noise voltage(Peak-peak)

VR

TA=25℃,Band width≤20MHz,Full load

-

350

mV

TA=-55℃,Tc=100℃,

Band width≤20MHz,Full load

-

700

mV

10

SC Reference voltage

Vb-SC

TA=25℃,Relative to the negative induction

1.21

1.25

V

11

Short circuit protection current


TA=25℃

15

mA

12

PC side disabled function


TA=25℃,50% load

-

2

V

13

Power distribution accuracya

PE

TA=25℃,full load

-

5

%

14

Output over voltage protection pointa

VOVP

TA=25℃,50%  load

13.7

14.9

V

15

Output voltage adjustment rangea

VTR

TA=25℃,50%  load

90

110

%

16

Inductive compensation voltagea

VSC

Each terminal less than 0.25V(Sensing end closed)

-

0.5

V

a Design assurance,Only test when the inspection is carried out or when the design process change affecting the parameters。


Table 3b Electrical characteristics of M300A15M500B

NO.

Items

Symbol

Unless otherwise specified   -55℃≤Tc≤100℃, VIN=270V±10V

Limit value

Unit

Min

Max

1

Input voltage/V

Turn on voltage

VINL-ONT


VINL-OFF


-

178.2

V

Turn off voltage

147.4

-

V

2

Insulation resistance

Riso

TA=25℃,Input, bottom plate and output between any two plus 1000V(DC)

100

-

3

Output voltage

Vo

TA=25℃,Full load

14.85

15.15

V

4

Output current

Io

Full load


33.3

A

5

Voltage regulation

Sv

180V~375V,Full load

-

1

%

6

Load regulation

S1

10% load~full load

-

1

%

7

Temperature coefficient

av

Full load

-

0.02

%/℃

8

Effectiveness

η

TA=25℃,Full load

TA=-55℃,Tc=100℃, Full load

84

-

%

82

-

%

9

Ripple and noise voltage(Peak-peak)

VR

TA=25℃,Band width≤20MHz,Full load

-

250

mV

TA=-55℃,Tc=100℃,

Band width≤20MHz,Full load

-

500

mV

10

SC Reference voltage

Vb-SC

TA=25℃,Relative to the negative induction

1.21

1.25

V

11

Short circuit protection current


TA=25℃

15

mA

12

PC side disabled function


TA=25℃,50% load

-

2

V

13

Power distribution accuracya

PE

TA=25℃,full load

-

5

%

14

Output over voltage protection pointa

VOVP

TA=25℃,50%  load

17.1

18.5

V

15

Output voltage adjustment rangea

VTR

TA=25℃,50%  load

90

110

%

16

Inductive compensation voltagea

VSC

Each terminal less than 0.25V(Sensing end closed)

-

0.5

V

a Design assurance,Only test when the inspection is carried out or when the design process change affecting the parameters.


Table 3c Electrical characteristics of M300A24M500B

NO.

Items

Symbol

Unless otherwise specified   -55℃≤Tc≤100℃, VIN=270V±10V

Limit value

Unit

Min

Min

1

Input voltage/V

Turn on voltage

VINL-ONT


VINL-OFF


-

178.2

V

Turn off voltage

147.4

-

V

2

Insulation resistance

Riso

TA=25℃,Input, bottom plate and output between any two plus 1000V(DC)

100

-

3

Output voltage

Vo

TA=25℃,Full load

23.76

24.24

V

4

Output current

Io

Full load


20.8

A

5

Voltage regulation

Sv

180V~375V,Full load

-

1

%

6

Load regulation

S1

10% load~full load

-

1

%

7

Temperature coefficient

av

Full load

-

0.02

%/℃

8

Effectiveness

η

TA=25℃,Full load

TA=-55℃,Tc=100℃, Full load

87

-

%

85

-

%

9

Ripple and noise voltage(Peak-peak)

VR

TA=25℃,Band width≤20MHz,Full load

-

125

mV

TA=-55℃,Tc=100℃,

Band width≤20MHz,Full load

-

250

mV

10

SC Reference voltage

Vb-SC

TA=25℃,Relative to the negative induction

1.21

1.25

V

11

Short circuit protection current


TA=25℃

Flow reduction type


12

PC side disabled function


TA=25℃,50% load

-

2

V

13

Power distribution accuracya

PE

TA=25℃,full load

-

5

%

14

Output over voltage protection pointa

VOVP

TA=25℃,50%  load

27.1

29.1

V

15

Output voltage adjustment rangea

VTR

TA=25℃,50%  load

90

110

%

16

Inductive compensation voltagea

VSC

Each terminal less than 0.25V(Sensing end closed)

-

0.5

V

a Design assurance,Only test when the inspection is carried out or when the design process change affecting the parameters.


5 Circuit block diagram of 300V Wide Input Series DC DC Converters


Fig 2 Circuit block diagram

6. Typical Characteristic Curve of 300V Wide Input Series DC DC Converters


Fig 3  Efficiency(Output power)

7  MTBF Curve of 300V Wide Input Series DC DC Converters


Fig 4  MTBF Curve
(Well ground state)

8  Pin Designation of 300V Wide Input Series DC DC Converters


Fig 5 Out Bottom View
Table 4 Pin Designation


Pin

Symbol

Designation

1

+In

Positive Input

2

PC

Inhibit and alarm

3

PR

Parallel

4

- In

Negative Input

5

- Out

Negative Output

6

- S

Negative Induction

7

SC

Secondary control

8

+ S

Positive Induction

9

+Out

Positive Output


9 Typical Connection Diagram of 300V Wide Input Series DC/DC Converters


Fig 6  Electrical test line connection diagram

10. Package Specifications of 300V Wide Input Series DC DC Converters


Fig 7 Bottom View
Table 5  Package Outline


Symbols

Unit/mm

Minimum

Typical

Minimum

A

12.20

-

13.50

A1

2.80

-

3.30

A2

10.65

-

11.40

Φb1

4.44

-

4.70

Φb2

1.90

-

2.16

D

116.42

-

117.18

E

43.95

-

44.95

e2

-

17.78

-

e3

-

7.62

-

e1

-

106.68

-

L


4.58

-

X1

45.45

-

45.95

Y1

50.55

-

51.05

d

3.17

-

3.55

Y

55.65

-

56.15


11 Ordering Information of 300V Wide Input Series DC DC Converters


Fig 8 Ordering Information


Application Notes:


  • Should avoid the impact of external interference on the test accuracy
  • The voltage detection point should be kept as far as possible at the root of the pin.
  • Do not plug the products with electrical。
  • The polarity of the power supply must be checked before power is applied to the product ; under test; While ensuring that the supply voltage and load current does not exceed the limit conditions.
  • When using the shell temperature can not exceed the specified temperature, or to increase the heat sink.
  • Detailed electrical performance indicators refer to corporate standards.

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