ECRI Microelectronics

270V Wide Input Series Hi-Rel DC DC Converters

1 Features

Input voltage range: 155~425V

dcdc-converterm24c-series-1

Typical input direct voltage: 270V

Output voltage: 5V,15V,48V

Output power: 400W,150W,300W

Output voltage regulation range: -20%~10%

Input under-voltage protection

Output over-current/over-voltage protection    

Thermal protection

Working temperature(TC):-55~100℃

Fix-frequency PWM control method

Standard-brick size

Pins function: compatibility with similar  products of SynQor


2 Scope of application of 270V Wide Input Series Hi-Rel DC-DC Converters
For high reliability electronic systems in aviation, aerospace, etc.

3 Descriptions of 270V Wide Input Series Hi-Rel DC-DC Converters
270V Wide Input Series DC DC Converters use two stages circuit topology, the first stage is voltage regulation stage, the second stage is input-output isolation stage. Output voltage produce error amplifying signal by error amplifier. This signal is use for control the duty ratio of PWM waveform thus controlling the output voltage of the whole module.
These series products has module circuits structure with PCB surface mounted technology, inside the products, using conductivity material for embedding and aluminum baseboard for cooling. The products’ outlines are compatible with similar products’ of SynQor, and their pins can be replacement.

4 Technical Specifications of 270V Wide Input Series Hi-Rel DC-DC Converters
Table 2: Rated conditions and Operating conditions

Absolute maximum rating

Operating conditions

Input Voltage: 475V

Output Power: 440W,165W,330W

Storage temperature: -65~135℃

Lead welding temperature(10s): 300℃

Junction Temperature:<150℃

Input voltage:155~425V

Working temperature(Tc):-55~100℃

No.

Character

Symbol

Conditions

( Unless otherwisespecified ,-55℃≤Tc≤125℃,VIN=270V±10V)

Limit value

Unit

min

max

1

Input under-voltage/V

turn-on voltage

VINL-ONT


VINL-OFF

TA=25℃

146

154

V

Turn-off voltage

TA=25℃

135

145

V

2

Output Voltage

Vo

Full-load

TA=25℃

4.95

5.05

V

Tc=-55℃

TC=100℃

4.925

5.075

3

Output Current

Io

Vin=155V~425V

-

80

A

4

Voltage regulation

Sv

155V  425V,Full-load

TA=25℃、 Tc=-55℃和 TC=100℃

-

±0.30

%

5

Load regulation

S1

No-load Full-load

TA=25℃、 Tc=-55℃和 TC=100℃

-

±0.30

%

6

Output voltage regulation range a

VTR

TA=25℃,50% load

-20

10

%

7

Output ripple voltage

VPP

BW≤20MHz, full-load, peak-peak

TA=25℃、 Tc=-55℃ TC=100℃

-

400

mV

8

Output over-voltage protection point

VOVP

TA=25℃,design guarantee

5.6

6.9

V

9

Output current for over-current protection

Iimax

TA=25℃

88

112

A

10

Capacitive Load

Co

TA=25℃,Full-load

-

10000

μF

11

efficiency

η

Vin=270V, Full-load, TA=25℃

88

-

%

a test only be needed when identified inspection or parameters are effected by changing process; b  design guarantee, do not require test


table 3a electrical characteristics(MI-270-05-FT-N-M-FB)

table 3b function characteristics(MI-270-05-FT-N-M-FB)

characteristics

Conditions

( Unless otherwisespecified ,-55℃≤Tc≤125℃,VIN=270V±10V)

criteria

Using function

ON/OFF voltage is over 2.4V, TA=25℃,

No output

ON/OFF voltage is lower than 0.7V or hung in the air, TA=25℃

Normal Output

table 3c electrical characteristics(MO-270-15-QT-N-M)

No.

characteristics

Symbol

conditions

( Unless otherwisespecified ,-55℃≤Tc≤125℃,VIN=270V±10V)

Limit value

Unit

min

max

1

Input under-voltage/V

turn-on voltage

VINL-ONT


VINL-OFF

TA=25℃

145

155

V

Turn-off voltage

TA=25℃

133

147

V

2

Output voltage

Vo

Full-Load

TA=25℃

14.85

15.15

V

Tc=-55℃

TC=100℃

14.775

15.225

3

Output current

Io

Vin=155V~425V

-

10

A

4

Voltage regulation

Sv

155V  425V,Full-load

TA=25℃、 Tc=-55℃和 TC=100℃

-

±0.30

%

5

Load regulation

S1

No-load Full-load

TA=25℃、 Tc=-55℃和 TC=100℃

-

±0.30

%

6

Output voltage regulation range a

VTR

TA=25℃,50% load


-20

10

%

7

Output ripple voltage

VPP

BW≤20MHz, full-load, peak-peak

TA=25℃、 Tc=-55℃和 TC=100℃

-

120

mV

8

Output over-voltage b

protection point

VOVP

TA=25℃,design guarantee

115

137

V

9

Output current for over-current protection

Iimax

TA=25℃

11

14

A

10

Capacitive Load

Co

TA=25℃,Full-load

-

2000

μF

11

efficiency

η

Vin=270V, Full-load , TA=25℃

85

-

%

a test only be needed when identified inspection or parameters are effected by changing proces;b  design guarantee, do not require test

Table 3d function characteristics (MX-270H-12-FP-N-M-F)

characteristics

Conditions

( Unless otherwisespecified ,-55℃≤Tc≤125℃,VIN=270V±10V)

criteria

Using function

ON/OFF voltage is over 2.4V, TA=25℃

No output

ON/OFF voltage is lower than 0.7V or hung in the air, TA=25℃

Output voltage is Normal

table 3e electrical characteristic(MO-270-48-HT-N-M)

No.

Character

Symbol

( Unless otherwisespecified ,-55℃≤Tc≤125℃,VIN=270V±10V)

Limit value

Unit

min

max

1

Input under-voltage/V

turn-on voltage

VINL-ONT


VINL-OFF

TA=25℃

145

155

V

Turn-off voltage

TA=25℃

133

147

V

2

Output Voltage

Vo

Full-load

TA=25℃

47.52

48.48

V

Tc=-55℃

TC=100℃

47.280

48.720

3

Output Current

Io

Vin=155V~425V

-

6.3

A

4

Voltage regulation

Sv

155V  425V,Full-load

TA=25℃、 Tc=-55℃TC=100℃

-

±0.30

%

5

Load regulation

S1

No-load Full-load

TA=25℃、 Tc=-55℃TC=100℃

-

±0.30

%

6

Output Voltage trimming range

VTR

TA=25℃,50% Load

-20

10

%

7

Output ripple voltage

VPP

BW≤20MHz, full-load, peak-peak

TA=25℃、 Tc=-55℃ TC=100℃

-

700

mV

8

Output over-voltage protection point

VOVP

TA=25℃,design guarantee

55.8

64.2

V

9

Output current for over-current protection

Iimax

TA=25℃

6.9

9.2

A

10

Capacitive Load

Co

TA=25℃,Full-load

-

1000

μF

11

Efficiency

η

Vin=270V,Full-load, TA=25℃

89

-

%

a test only be needed when identified inspection or parameters are effected by changing processb  design guarantee, do not require test


table 3f function characteristics(MI-270-48-HT-N-M-F)

characteristics

conditions

( Unless otherwisespecified ,-55℃≤Tc≤125℃,VIN=270V±10V)

criteria

Using function

ON/OFF voltage is over 2.4V, TA=25℃

No output

ON/OFF voltage is lower than 0.7V or hung in the air, TA=25℃

Output voltage is Normal


5 Circuit block diagram of 270V Wide Input Series Hi-Rel DC DC Converters
circuit-block-diagram
Diagram 2 Product schematic diagram

6 Typical Characteristic Curve of 270V Wide Input Series Hi-Rel DC DC Converters
typical-characteristic-curve
Diagram 3  MI-270-05-FT-N-M-FB efficiency(Output Power)
typical-characteristic-curve-1
Diagram 4  MO-270-15-QT-N-M efficiency(Output Power)
typical-characteristic-curve-2
Diagram 5  MI-270-48-HT-N-M-F efficiency(Output Power)

7.MTBF Curve of 270V Wide Input Series Hi-Rel DC to DC Converters
7-mtbf-curve
Diagram 6   MTBF Curve
(Predicting the ground is in good condition)

8 Pin Designation of 270V Wide Input Series Hi-Rel DC to DC Converters
8-pin-designation
Figure 7 MI-270-05-FT-N-M-FB Out Bottom View
Table 4 MI-270-05-FT-N-M-FB Pin Designation

Pin

Symbol

Designation

1

SyncIn

Synchronizing signal Input

2

SyncOut

Synchronizing signal Output

3

ON/OFF(+)

Positive Enabling(relative to ON/OFF(-))

4

ON/OFF(-)

Negative Enabling(isolation common)

5

Vin(+)

Positive Input

6

Vin(-)

Negative Input

7

Vaux

Auxiliary power output(relative to output common)

8

Start Sync

Synchronizing signal start


9

I Share

Paralleled current sharing Signal

10

TRIM

Output voltage regulation



11

SENSE(+)

Positive Output Induction

12

SENSE(-)

Negative Output Induction

13

Vout(-)

Negative Output

14

Vout(-)

Negative Output

15

Vout(-)

Negative Output

16

Vout(+)

Positive Output

17

Vout(+)

Positive Output

18

Vout(+)

Positive Output

8-pin-designation-1
Figure 8 MO-270-15-QT-N-M Out Bottom View
Table 5 MO-270-15-QT-N-M Pin Designation

Pin

Symbol

Designation

1

Vin+

Positive Input

2

ON/OFF

Positive Enabling

A

ClockSync

Synchronizing signal

B

StartSync

Synchronizing start

C

Ishare

Paralleled current sharing Signal

3

Vin-

Negative Input

4

Vo-

Negative Output

5

S-

Negative Output Induction

6

Trim

Output voltage regulation

7

S+

Positive Output Induction

8

Vo+

Positive Output


8-pin-designation-2
MI-270-48-HT-N-M-F Upward view

9 Typical Connection Diagram of 270V Wide Input Series Hi-Rel DC to DC Converters
-typical-connection-diagram
Diagram 10:  Electrical testing connection diagram

10. Package Specifications of 270V Wide Input Series Hi-Rel DC to DC Converters
10-package-specifications
Diagram 11: MI-270-05-FT-N-M-FB Package outline drawing

10-package-specifications-2
Diagram 12: MO-270-15-QT-N-M Package outline drawing
10-package-specifications-3
Diagram 13: MI-270-48-HT-N-M-F Package outline drawing

11 Ordering Information of of 270V Wide Input Series Hi-Rel DC to DC Converters
11-ordering-information
Diagram 14: 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.
  • Package temperature can not exceed the specified temperature in use, otherwise the heat sink should be needed.
  • When ordering this device,the detailed electrical specifications shall be based on relevant standards.
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