QW050B71

QW050B71 Datasheet

QW050B1 and QW075B1 Power Modules dc-dc Converters 36 Vdc to 75 Vdc Input, 12 Vdc Output 50 W to 75 W

Part	Datasheet
QW050B71	QW050B71 (pdf)

Related Parts	Information
QW075A1	QW075A1

PDF Datasheet Preview
Data Sheet April 2008 QW050B1 and QW075B1 Power Modules dc-dc Converters 36 Vdc to 75 Vdc Input, 12 Vdc Output 50 W to 75 W The QW Series Power Modules use advanced, surface-mount technology and deliver high-quality, efficient, and compact dc-dc conversion. n Distributed power architectures n Computer equipment n Communications equipment Options n Heat sinks available for extended operation n Auto-restart after overcurrent shutdown n Case ground pin n Small size mm x mm x mm in. x in. x in. n High power density n High efficiency 85% typical n Low output noise n Constant frequency n Industry-standard pinout n Metal baseplate n 2:1 input voltage range n Overtemperature protection n Remote sense n Negative remote on/off n Adjustable output voltage n Overvoltage and overcurrent protection n Manufacturing facilities registered against the ISO9000 series standards n UL†1950 Recognized, C22.2 No. 950-95 Certified, and VDE § 0805 EN60950, IEC950 Licensed n CE mark meets 73/23/EEC and 93/68/EEC directives* * ISO is a registered trademark of the International Organization for Standardization. † UL is a registered trademark of Underwriters Laboratories, Inc. CSA is a registered trademark of Canadian Standards Associa- tion. § VDE is a trademark of Verband Deutscher Elektrotechniker e.V. ** This product is intended for integration into end-use equipment. All the required procedures for CE marking of end-use equipment should be followed. The CE mark is placed on selected products. The QW050B1 and QW075B1 Power Modules are dc-dc converters that operate over an input voltage range of 36 Vdc to 75 Vdc and provide a precisely regulated dc output. The outputs are fully isolated from the inputs, allowing versatile polarity configurations and grounding connections. The modules have maximum power ratings from 50 W to 75 W at a typical full-load efficiency of The sealed modules offer a metal baseplate for excellent thermal performance. Threaded-through holes are provided to allow easy mounting or addition of a heat sink for high-temperature applications. The standard feature set includes remote sensing, output trim, and remote on/off for convenient flexibility in distributed power applications. QW050B1 and QW075B1 Power Modules dc-dc Converters 36 Vdc to 75 Vdc Input, 12 Vdc Output 50 W to 75 W Data Sheet April 2008 Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Unit Input Voltage Continuous Transient 100 ms VI, trans Operating Case Temperature See Thermal Considerations section. Storage Temperature Tstg I/O Isolation Voltage for 1 minute 1500 The temperature at this location should not exceed 100 °C. The output power of the module should not exceed the rated power for the module as listed in the Ordering Information table. Although the maximum case temperature of the power modules is 100 °C, you can limit this temperature to a lower value for extremely high reliability. Heat Transfer Without Heat Sinks Increasing airflow over the module enhances the heat transfer via convection. Figure 22 shows the maximum power that can be dissipated by the module without exceeding the maximum case temperature versus local ambient temperature TA for natural convection through 3 m/s 600 ft./min. . Note that the natural convection condition was measured at m/s to m/s 10 ft./min. to 20 ft./min. however, systems in which these power modules may be used typically generate natural convection airflow rates of m/s 60 ft./min. due to other heatdissipating components in the system. The use of Figure 22 is shown in the following example. Lineage Power VI = 75 V VI = 48 V VI = 36 V OUTPUT CURRENT, IO A 8-3447 F Figure QW050B1 Power Dissipation vs. Output Current at 25 °C POWER DISSIPATION, PD W 18 16 14 12 10 8 6 4 2 0 VI = 75 V VI = 48 V VI = 36 V OUTPUT CURRENT, IO A 8-3448 F Figure QW075B1 Power Dissipation vs. Output Current at 25 °C QW050B1 and QW075B1 Power Modules dc-dc Converters 36 Vdc to 75 Vdc Input, 12 Vdc Output 50 W to 75 W Data Sheet April 2008 Thermal Considerations continued Heat Transfer Without Heat Sinks continued POWER DISSIPATION, PD W m/s 800 ft./min. m/s 700 ft./min. m/s 600 ft./min. m/s 500 ft./min. m/s 400 ft./min. m/s 300 ft./min. m/s 200 ft./min. m/s 100 ft./min. m/s 20 ft./min. NATURAL CONVECTION 0 10 20 30 40 50 60 70 80 90 100 LOCAL AMBIENT TEMPERATURE, TA °C 8-2306 F .b Figure Forced Convection Power Derating with No Heat Sink Either Orientation Heat Transfer with Heat Sinks The power modules have through-threaded, M3 x mounting holes, which enable heat sinks or cold plates to attach to the module. The mounting torque must not exceed N-m 5 in.-lb. . For a screw attachment from the pin side, the recommended hole size on the customer’s PWB around the mounting holes is ± inches. If a larger hole is used, the mounting torque from the pin side must not exceed N-m in.-lbs. . Thermal derating with heat sinks is expressed by using the overall thermal resistance of the module. Total module thermal resistance is defined as the maximum case temperature rise max divided by the module power dissipation PD : The location to measure case temperature TC is shown in Figure Case-to-ambient thermal resistance vs. airflow is shown, for various heat sink configurations and heights, in Figure 23 and Figure Longitudinal orientation is defined as the long axis of the module that is parallel to the airflow direction, whereas in the transverse orientation, the long axis is perpendicular to the airflow. These curves were obtained by experimental testing of heat sinks, which are offered in the product catalog. Ordering Information Please contact your Lineage Power Account Manager or Field Application Engineer for pricing and availability. Table Device Codes Input Voltage 48 Vdc 48 Vdc Output Voltage 12 Vdc 12 Vdc Output Power 50 W 75 W Output Current A Remote On/Off Logic Negative Device Code QW050B1 QW075B1 Comcode 108446949 108446956 Optional features can be ordered using the suffixes shown in Table To order more than one option, list device codes suffixes in numerically descending order. For example, the device code for a QW050B1 module with the following option is shown below: Auto-restart after overcurrent shutdown QW050B41 Table Device Options Option Case ground pin Auto-restart after overcurrent shutdown Device Code Suffix Lineage Power Data Sheet April 2008 QW050B1 and QW075B1 Power Modules dc-dc Converters 36 Vdc to 75 Vdc Input, 12 Vdc Output 50 W to 75 W Ordering Information continued Table Device Accessories Accessory 1/4 in. transverse kit heat sink, thermal pad, and screws 1/4 in. longitudinal kit heat sink, thermal pad, and screws 1/2 in. transverse kit heat sink, thermal pad, and screws 1/2 in. longitudinal kit heat sink, thermal pad, and screws 1 in. transverse kit heat sink, thermal pad, and screws 1 in. longitudinal kit heat sink, thermal pad, and screws Dimensions are in millimeters and inches . Comcode 848060992 848061008 848061016 848061024 848061032 848061040 1/4 IN. ± ± 1/4 IN. ± ± 1/2 IN. 1 IN. ± ± 8-2473 F Figure Longitudinal Heat Sink ± ± 1/2 IN. 1 IN. Figure Transverse Heat Sink 8-2472 F Lineage Power QW050B1 and QW075B1 Power Modules dc-dc Converters 36 Vdc to 75 Vdc Input, 12 Vdc Output 50 W to 75 W Notes Data Sheet April 2008 Lineage Power Data Sheet April 2008 Notes QW050B1 and QW075B1 Power Modules dc-dc Converters 36 Vdc to 75 Vdc Input, 12 Vdc Output 50 W to 75 W Lineage Power QW050B1 and QW075B1 Power Modules dc-dc Converters 36 Vdc to 75 Vdc Input, 12 Vdc Output 50 W to 75 W Data Sheet April 2008 A sia-Pacific Head qu art ers T el +65 6 41 6 4283 World W ide Headq u arters Lin eag e Po wer Co rp oratio n 30 00 Sk yline D riv e, Mes quite, T X 75149, U SA +1-800-526-7819 Outs id e U .S.A +1- 97 2-2 84 -2626 ag ep ower.co m e-m ail tech sup lin ea gep ower .co m Eu ro pe, M id dle-East an d Afric a He ad qu arters Tel +49 8 9 6089 286 Ind ia Head qu arters Tel +91 8 0 28411633 Lineage Power reserves the right to make changes to the produc t s or information contained herein without notice. No liability is ass umed as a res ult of their use or applic ation. No rights under any patent acc ompany the sale of any s uc h pr oduct s or information. 2008 Lineage Power Corpor ation, Mesquite, Texas All International Rights Res er ved. April 2008 DS99-209EPS

PDF Datasheet Preview

Data Sheet April 2008

QW050B1 and QW075B1 Power Modules dc-dc Converters 36 Vdc to 75 Vdc Input, 12 Vdc Output 50 W to 75 W

The QW Series Power Modules use advanced, surface-mount technology and deliver high-quality, efficient, and compact dc-dc conversion.
n Distributed power architectures n Computer equipment n Communications equipment

Options
n Heat sinks available for extended operation n Auto-restart after overcurrent shutdown n Case ground pin
n Small size mm x mm x mm in. x in. x in.
n High power density
n High efficiency 85% typical
n Low output noise
n Constant frequency
n Industry-standard pinout
n Metal baseplate
n 2:1 input voltage range
n Overtemperature protection
n Remote sense
n Negative remote on/off
n Adjustable output voltage
n Overvoltage and overcurrent protection
n Manufacturing facilities registered against the ISO*9000 series standards
n UL†1950 Recognized, C22.2 No. 950-95 Certified, and VDE § 0805 EN60950, IEC950 Licensed
n CE mark meets 73/23/EEC and 93/68/EEC directives**
* ISO is a registered trademark of the International Organization for Standardization.
† UL is a registered trademark of Underwriters Laboratories, Inc. CSA is a registered trademark of Canadian Standards Associa-
tion. § VDE is a trademark of Verband Deutscher Elektrotechniker e.V. ** This product is intended for integration into end-use equipment.

All the required procedures for CE marking of end-use equipment should be followed. The CE mark is placed on selected products.

The QW050B1 and QW075B1 Power Modules are dc-dc converters that operate over an input voltage range of 36 Vdc to 75 Vdc and provide a precisely regulated dc output. The outputs are fully isolated from the inputs, allowing versatile polarity configurations and grounding connections. The modules have maximum power ratings from 50 W to 75 W at a typical full-load efficiency of

The sealed modules offer a metal baseplate for excellent thermal performance. Threaded-through holes are provided to allow easy mounting or addition of a heat sink for high-temperature applications. The standard feature set includes remote sensing, output trim, and remote on/off for convenient flexibility in distributed power applications.

QW050B1 and QW075B1 Power Modules dc-dc Converters 36 Vdc to 75 Vdc Input, 12 Vdc Output 50 W to 75 W

Data Sheet April 2008

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability.

Parameter

Unit

Input Voltage Continuous Transient 100 ms

VI, trans

Operating Case Temperature See Thermal Considerations section.

Storage Temperature

Tstg

I/O Isolation Voltage for 1 minute
1500
The temperature at this location should not exceed 100 °C. The output power of the module should not exceed the rated power for the module as listed in the Ordering Information table.

Although the maximum case temperature of the power modules is 100 °C, you can limit this temperature to a lower value for extremely high reliability.

Heat Transfer Without Heat Sinks

Increasing airflow over the module enhances the heat transfer via convection. Figure 22 shows the maximum power that can be dissipated by the module without exceeding the maximum case temperature versus local ambient temperature TA for natural convection through 3 m/s 600 ft./min. .

Note that the natural convection condition was measured at m/s to m/s 10 ft./min. to 20 ft./min. however, systems in which these power modules may be used typically generate natural convection airflow rates of m/s 60 ft./min. due to other heatdissipating components in the system. The use of Figure 22 is shown in the following example.

Lineage Power

VI = 75 V

VI = 48 V

VI = 36 V

OUTPUT CURRENT, IO A
8-3447 F

Figure QW050B1 Power Dissipation vs. Output Current at 25 °C

POWER DISSIPATION, PD W
18 16 14 12 10
8 6 4 2 0

VI = 75 V VI = 48 V VI = 36 V

OUTPUT CURRENT, IO A
8-3448 F

Figure QW075B1 Power Dissipation vs. Output Current at 25 °C

QW050B1 and QW075B1 Power Modules dc-dc Converters 36 Vdc to 75 Vdc Input, 12 Vdc Output 50 W to 75 W

Data Sheet April 2008

Thermal Considerations continued Heat Transfer Without Heat Sinks continued

POWER DISSIPATION, PD W
m/s 800 ft./min.
m/s 700 ft./min.
m/s 600 ft./min.
m/s 500 ft./min.
m/s 400 ft./min.
m/s 300 ft./min.
m/s 200 ft./min.
m/s 100 ft./min.
m/s 20 ft./min.

NATURAL CONVECTION
0 10 20 30 40 50 60 70 80 90 100

LOCAL AMBIENT TEMPERATURE, TA °C
8-2306 F .b

Figure Forced Convection Power Derating with No Heat Sink Either Orientation

Heat Transfer with Heat Sinks

The power modules have through-threaded, M3 x mounting holes, which enable heat sinks or cold plates to attach to the module. The mounting torque must not exceed N-m 5 in.-lb. . For a screw attachment from the pin side, the recommended hole size on the customer’s PWB around the mounting holes is ± inches. If a larger hole is used, the mounting torque from the pin side must not exceed N-m in.-lbs. .

Thermal derating with heat sinks is expressed by using the overall thermal resistance of the module. Total module thermal resistance is defined as the maximum case temperature rise max divided by the module power dissipation PD :

The location to measure case temperature TC is shown in Figure Case-to-ambient thermal resistance vs. airflow is shown, for various heat sink configurations and heights, in Figure 23 and Figure Longitudinal orientation is defined as the long axis of the module that is parallel to the airflow direction, whereas in the transverse orientation, the long axis is perpendicular to the airflow. These curves were obtained by experimental testing of heat sinks, which are offered in the product catalog.
Ordering Information

Please contact your Lineage Power Account Manager or Field Application Engineer for pricing and availability.

Table Device Codes

Input Voltage 48 Vdc 48 Vdc

Output Voltage 12 Vdc 12 Vdc

Output Power 50 W 75 W

Output Current A

Remote On/Off Logic

Negative

Device Code QW050B1 QW075B1

Comcode
108446949 108446956

Optional features can be ordered using the suffixes shown in Table To order more than one option, list device codes suffixes in numerically descending order. For example, the device code for a QW050B1 module with the following option is shown below:

Auto-restart after overcurrent shutdown

QW050B41

Table Device Options

Option Case ground pin Auto-restart after overcurrent shutdown

Device Code Suffix

Lineage Power

Data Sheet April 2008

QW050B1 and QW075B1 Power Modules dc-dc Converters 36 Vdc to 75 Vdc Input, 12 Vdc Output 50 W to 75 W
Ordering Information continued

Table Device Accessories

Accessory 1/4 in. transverse kit heat sink, thermal pad, and screws 1/4 in. longitudinal kit heat sink, thermal pad, and screws 1/2 in. transverse kit heat sink, thermal pad, and screws 1/2 in. longitudinal kit heat sink, thermal pad, and screws 1 in. transverse kit heat sink, thermal pad, and screws 1 in. longitudinal kit heat sink, thermal pad, and screws

Dimensions are in millimeters and inches .

Comcode
848060992 848061008 848061016 848061024 848061032 848061040
1/4 IN.
± ±
1/4 IN.
± ±
1/2 IN.
1 IN.
± ±
8-2473 F

Figure Longitudinal Heat Sink
± ±
1/2 IN. 1 IN.

Figure Transverse Heat Sink
8-2472 F

Lineage Power

QW050B1 and QW075B1 Power Modules dc-dc Converters 36 Vdc to 75 Vdc Input, 12 Vdc Output 50 W to 75 W

Notes

Data Sheet April 2008

Lineage Power

Data Sheet April 2008

Notes

QW050B1 and QW075B1 Power Modules dc-dc Converters 36 Vdc to 75 Vdc Input, 12 Vdc Output 50 W to 75 W

Lineage Power

QW050B1 and QW075B1 Power Modules dc-dc Converters 36 Vdc to 75 Vdc Input, 12 Vdc Output 50 W to 75 W

Data Sheet April 2008

A sia-Pacific Head qu art ers T el +65 6 41 6 4283

World W ide Headq u arters Lin eag e Po wer Co rp oratio n 30 00 Sk yline D riv e, Mes quite, T X 75149, U SA +1-800-526-7819 Outs id e U .S.A +1- 97 2-2 84 -2626 ag ep ower.co m e-m ail tech sup lin ea gep ower .co m

Eu ro pe, M id dle-East an d Afric a He ad qu arters Tel +49 8 9 6089 286

Ind ia Head qu arters Tel +91 8 0 28411633

Lineage Power reserves the right to make changes to the produc t s or information contained herein without notice. No liability is ass umed as a res ult of their use or applic ation. No rights under any patent acc ompany the sale of any s uc h pr oduct s or information.
2008 Lineage Power Corpor ation, Mesquite, Texas All International Rights Res er ved.

April 2008 DS99-209EPS

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived QW050B71 Datasheet file may be downloaded here without warranties.

Datasheet ID: QW050B71 645735