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Input DC Voltage (V) : 180V～375V
Max. Output Power (W) : 500W
Output Voltage (V) : 12V，15V，24V，28V，48V

Product Detail

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

Input DC voltage range：180～375V
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
NO.	Items		Symbol	Unless otherwise specified -55℃≤Tc≤100℃， VIN=270V±10V	Min	Max	Unit
1	Input voltage/V	Turn on voltage	VINL-ONT VINL-OFF		-	178.2	V
1	Input voltage/V	Turn off voltage	VINL-ONT VINL-OFF		147.4	-	V
2	Insulation resistance		Riso	TA=25℃，Input, bottom plate and output between any two plus 1000V(DC)	100	-	MΩ
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	-	%
8	Effectiveness		η	TA=25℃，Full load TA=-55℃，Tc=100℃， Full load	83	-	%
9	Ripple and noise voltage（Peak-peak）		VR	TA=25℃，Band width≤20MHz,Full load	-	350	mV
9	Ripple and noise voltage（Peak-peak）		VR	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
NO.	Items		Symbol	Unless otherwise specified -55℃≤Tc≤100℃， VIN=270V±10V	Min	Max	Unit
1	Input voltage/V	Turn on voltage	VINL-ONT VINL-OFF		-	178.2	V
1	Input voltage/V	Turn off voltage	VINL-ONT VINL-OFF		147.4	-	V
2	Insulation resistance		Riso	TA=25℃，Input, bottom plate and output between any two plus 1000V(DC)	100	-	MΩ
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	-	%
8	Effectiveness		η	TA=25℃，Full load TA=-55℃，Tc=100℃， Full load	82	-	%
9	Ripple and noise voltage（Peak-peak）		VR	TA=25℃，Band width≤20MHz,Full load	-	250	mV
9	Ripple and noise voltage（Peak-peak）		VR	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
NO.	Items		Symbol	Unless otherwise specified -55℃≤Tc≤100℃， VIN=270V±10V	Min	Min	Unit
1	Input voltage/V	Turn on voltage	VINL-ONT VINL-OFF		-	178.2	V
1	Input voltage/V	Turn off voltage	VINL-ONT VINL-OFF		147.4	-	V
2	Insulation resistance		Riso	TA=25℃，Input, bottom plate and output between any two plus 1000V(DC)	100	-	MΩ
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	-	%
8	Effectiveness		η	TA=25℃，Full load TA=-55℃，Tc=100℃， Full load	85	-	%
9	Ripple and noise voltage（Peak-peak）		VR	TA=25℃，Band width≤20MHz,Full load	-	125	mV
9	Ripple and noise voltage（Peak-peak）		VR	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
Symbols	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.

Tags : Hi Rel DC-DC Converter Hi Rel Hi Rel hi voltage

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