QBK025A0B1-H

QBK025A0B1-H Datasheet

QBK025A0B Series DC-DC Converter Power Modules 36- 55Vdc Input, 12Vdc Output and 25A Output Current

Part	Datasheet
QBK025A0B1-H	QBK025A0B1-H (pdf)

Related Parts	Information
QBK025A0B1	QBK025A0B1

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Data Sheet March 27, 2008 QBK025A0B Series DC-DC Converter Power Modules 36- 55Vdc Input, 12Vdc Output and 25A Output Current Compliant to RoHS EU Directive 2002/95/EC -Z versions Compliant to RoHS EU Directive 2002/95/EC with lead solder exemption non-Z versions Delivers up to 25A Output current High efficiency 94% at 12V full load Industry standard Quarter brick footprint 57.9mm x 36.8mm x 10.6mm Distributed power architectures Servers and storage applications Optical and Access Network Equipment Enterprise Networks Options Negative logic, Remote On/Off Active load sharing Parallel Operation Baseplate option -H Auto restart after fault shutdown Case ground pin 2.28in x 1.45in x 0.42in Low output ripple and noise Cost efficient open frame design Intermediate input voltage range Output overcurrent/voltage protection Over-temperature protection Single optimal regulated output Wide operating temperature range -400C to 850C Positive logic, Remote On/Off Complies with and is licensed for Basic Insulation rating per EN60950-1 CE mark meets 73/23/EEC and 93/68/EEC directives§ UL* 60950-1Recognized, CSA† C22.2 No. 60950-1- 03 Certified, and 0805:2001-12 EN60950-1 Licensed ISO** 9001 and ISO 14001 certified manufacturing facilities The QBK025A0B series of DC-DC converters are an expansion of a new generation of DC/DC power modules designed to support 12Vdc intermediate bus applications where multiple low voltages are subsequently generated using discrete/modular point of load POL converters. The QBK025A0B series provide up to 25A output current in an industry standard quarter brick, which makes it an ideal choice for small space, high current and 12V intermediate bus voltage applications. The converter incorporates synchronous rectification technology and innovative packaging techniques to achieve efficiency reaching 94% at 12V full load. This leads to lower power dissipations such that for many applications a heat sink is not required. The output is fully isolated from the input, allowing versatile polarity configurations and grounding connections. Built-in filtering for both input and output minimizes the need for external filtering. * UL is a registered trademark of Underwriters Laboratories, Inc. † CSA is a registered trademark of Canadian Standards Association. VDE is a trademark of Verband Deutscher Elektrotechniker e.V. ** ISO is a registered trademark of the International Organization of Standards Document No DS03-096 ver. PDF name qbus_qbk025a0b_ds.pdf Data Sheet March 27, 2008 QBK025A0B DC-DC Power Modules 36-55Vdc Input 12Vdc Output Voltage 25A Output Current 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 the device reliability. Parameter Device Unit Input Voltage* Continuous Non- operating continuous Operating Ambient Temperature See Thermal Considerations section Storage Temperature Tstg I/O Isolation Voltage 100% factory Hi-Pot tested 1500 * Input over voltage protection will shutdown the output voltage when the input voltage exceeds threshold level. Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Operating Input Voltage Maximum Input Current VIN=0V to 55V, IO=IO, max Inrush Transient Device All Unit 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 TH temperature of the power modules is 110 °C - 115 °C, you can limit this temperature to a lower value for extremely high reliability. Please refer to the Application Note “Thermal Characterization Process For Open-Frame BoardMounted Power Modules” for a detailed discussion of thermal aspects including maximum device temperatures. Heat Transfer via Convection Increased airflow over the module enhances the heat transfer via convection. The thermal derating figures 14-16 show the maximum output current that can be delivered by each module in the respective orientation without exceeding the maximum TH temperature versus local ambient temperature TA for air flows of 1 m/s 200 ft./min and 2m/s 400 ft./min . Note that the natural convection condition was measured at m/s to m/s 10ft./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 heat dissipating components in the system. The use of Figures 14 - 15 are shown in the following example: Example What is the minimum airflow necessary for a QBK025A0B operating at VI = 48 V, an output current of 12A, and a maximum ambient temperature of 70 °C in transverse orientation. Solution: Given VI = 48V, Io = 12A, TA = 70 °C Determine required airflow V Use Figure 14 : V = T1 m/sec. 200 ft./min. or greater. OUTPUT CURRENT, IO A 3m/s 600LFM 2m/s 400LFM 1m/s 200LFM Natural Convection LOCAL AMBIENT TEMPERATURE, TA °C Figure Output Current Derating for the QBK025A0B in the Transverse Orientation with no baseplate Airflow Direction from Vin + to Vin - Vin = 48V. LINEAGE POWER Data Sheet March 27, 2008 QBK025A0B DC-DC Power Modules 36-55Vdc Input 12Vdc Output Voltage 25A Output Current Thermal Derating Curves OUTPUT CURRENT, IO A 15 3m/s 600LFM 2m/s 400LFM 1m/s 200LFM Natural Convection LOCAL AMBIENT TEMPERATURE, TA °C Figure Output Current Derating for the QBK025A0B Vo = 12V in the Transverse Orientation with baseplate. OUTPUT CURRENT, IO A 3m/s 600LFM 2m/s 400LFM 1m/s 200LFM 5 LOCAL AMBIENT TEMPERATURE, TA °C Figure Output Current Derating for the QBK025A0B Vo = 12V in the Transverse Orientation with baseplate and 0.25-inch high heatsink. OUTPUT CURRENT, IO A 15 3m/s 600LFM 2m/s 400LFM 1m/s 200LFM 5 LOCAL AMBIENT TEMPERATURE, TA °C Figure Output Current Derating for the QBK025A0B Vo = 12V in the Transverse Orientation with baseplate and 0.5-inch high heatsink. LINEAGE POWER Data Sheet March 27, 2008 Ordering Information Please contact your Lineage Power Sales Representative for pricing, availability and optional features. Table Device Code Input Voltage 48V 36-55Vdc Output Voltage Output Current Efficiency 94% Connector Type Through hole Product codes QBK025A0B1 Comcode 108988663 48V 36-55Vdc 12V Through hole QBK025A0B1-H 108988671 48V 36-55Vdc 12V Through hole QBK025A0B741-BH 108989471 48V 36-55Vdc 12V Through hole QBK025A0B41-BH CC109125151 48V 36-55Vdc 12V Through hole QBK025A0B41-PH 108992855 48V 36-55Vdc 12V Through hole QBK025A0B71-BPH CC109104015 48V 36-55Vdc 12V Through hole QBK025A0B741-BPH 108989348 48V 36-55Vdc 12V Through hole QBK025A0B1Z CC109107884 48V 36-55Vdc 12V Through hole QBK025A0B41-BHZ CC109129243 48V 36-55Vdc 12V Through hole QBK025A0B1-PHZ CC109138541 48V 36-55Vdc 12V Through hole QBK025A0B71-BHZ CC109139465 Table Device Options Option Negative remote on/off logic Auto-restart Pin Length mm ± mm in. ± in Case ground pin offered with baseplate option only Base Plate option Active load sharing Parallel Operation Indicates RoHS Compliant part Suffix 1 4 6 7 -H -P -Z

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Data Sheet March 27, 2008

QBK025A0B Series DC-DC Converter Power Modules 36- 55Vdc Input, 12Vdc Output and 25A Output Current

Compliant to RoHS EU Directive 2002/95/EC -Z versions

Compliant to RoHS EU Directive 2002/95/EC with lead solder exemption non-Z versions

Delivers up to 25A Output current High efficiency 94% at 12V full load

Industry standard Quarter brick footprint
57.9mm x 36.8mm x 10.6mm

Distributed power architectures Servers and storage applications Optical and Access Network Equipment Enterprise Networks

Options

Negative logic, Remote On/Off Active load sharing Parallel Operation Baseplate option -H Auto restart after fault shutdown Case ground pin
2.28in x 1.45in x 0.42in Low output ripple and noise Cost efficient open frame design Intermediate input voltage range Output overcurrent/voltage protection Over-temperature protection Single optimal regulated output Wide operating temperature range -400C to 850C Positive logic, Remote On/Off Complies with and is licensed for Basic Insulation
rating per EN60950-1 CE mark meets 73/23/EEC and 93/68/EEC
directives§ UL* 60950-1Recognized, CSA† C22.2 No. 60950-1-
03 Certified, and 0805:2001-12 EN60950-1 Licensed ISO** 9001 and ISO 14001 certified manufacturing facilities

The QBK025A0B series of DC-DC converters are an expansion of a new generation of DC/DC power modules designed to support 12Vdc intermediate bus applications where multiple low voltages are subsequently generated using discrete/modular point of load POL converters. The QBK025A0B series provide up to 25A output current in an industry standard quarter brick, which makes it an ideal choice for small space, high current and 12V intermediate bus voltage applications. The converter incorporates synchronous rectification technology and innovative packaging techniques to achieve efficiency reaching 94% at 12V full load. This leads to lower power dissipations such that for many applications a heat sink is not required. The output is fully isolated from the input, allowing versatile polarity configurations and grounding connections. Built-in filtering for both input and output minimizes the need for external filtering.
* UL is a registered trademark of Underwriters Laboratories, Inc.
† CSA is a registered trademark of Canadian Standards Association. VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
** ISO is a registered trademark of the International Organization of Standards

Document No DS03-096 ver. PDF name qbus_qbk025a0b_ds.pdf

Data Sheet March 27, 2008

QBK025A0B DC-DC Power Modules 36-55Vdc Input 12Vdc Output Voltage 25A Output Current

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 the device reliability.

Parameter

Device

Unit

Input Voltage*

Continuous

Non- operating continuous

Operating Ambient Temperature See Thermal Considerations section

Storage Temperature

Tstg

I/O Isolation Voltage 100% factory Hi-Pot tested
1500
* Input over voltage protection will shutdown the output voltage when the input voltage exceeds threshold level.

Electrical Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.

Parameter Operating Input Voltage Maximum Input Current VIN=0V to 55V, IO=IO, max

Inrush Transient

Device All

Unit
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 TH temperature of the power modules is 110 °C - 115 °C, you can limit this temperature to a lower value for extremely high reliability. Please refer to the Application Note “Thermal Characterization Process For Open-Frame BoardMounted Power Modules” for a detailed discussion of thermal aspects including maximum device temperatures.

Heat Transfer via Convection

Increased airflow over the module enhances the heat transfer via convection. The thermal derating figures 14-16 show the maximum output current that can be delivered by each module in the respective orientation without exceeding the maximum TH temperature versus local ambient temperature TA for air flows of 1 m/s 200 ft./min and 2m/s 400 ft./min .

Note that the natural convection condition was measured at m/s to m/s 10ft./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 heat dissipating components in the system. The use of Figures 14 - 15 are shown in the following example:

Example

What is the minimum airflow necessary for a QBK025A0B operating at VI = 48 V, an output current of 12A, and a maximum ambient temperature of 70 °C in transverse orientation.

Solution:

Given VI = 48V, Io = 12A, TA = 70 °C

Determine required airflow V Use Figure 14 :

V = T1 m/sec. 200 ft./min. or greater.

OUTPUT CURRENT, IO A
3m/s 600LFM
2m/s 400LFM
1m/s 200LFM

Natural Convection

LOCAL AMBIENT TEMPERATURE, TA °C

Figure Output Current Derating for the QBK025A0B in the Transverse Orientation with no baseplate Airflow Direction from Vin + to Vin - Vin = 48V.

LINEAGE POWER

Data Sheet March 27, 2008

QBK025A0B DC-DC Power Modules 36-55Vdc Input 12Vdc Output Voltage 25A Output Current

Thermal Derating Curves

OUTPUT CURRENT, IO A
15 3m/s 600LFM
2m/s 400LFM 1m/s 200LFM

Natural Convection

LOCAL AMBIENT TEMPERATURE, TA °C

Figure Output Current Derating for the QBK025A0B Vo = 12V in the Transverse Orientation with baseplate.

OUTPUT CURRENT, IO A
3m/s 600LFM
2m/s 400LFM
1m/s 200LFM 5

LOCAL AMBIENT TEMPERATURE, TA °C

Figure Output Current Derating for the QBK025A0B Vo = 12V in the Transverse Orientation with baseplate and 0.25-inch high heatsink.

OUTPUT CURRENT, IO A
15 3m/s 600LFM
2m/s 400LFM
1m/s 200LFM 5

LOCAL AMBIENT TEMPERATURE, TA °C

Figure Output Current Derating for the QBK025A0B Vo = 12V in the Transverse Orientation with baseplate and 0.5-inch high heatsink.

LINEAGE POWER

Data Sheet March 27, 2008
Ordering Information

Please contact your Lineage Power Sales Representative for pricing, availability and optional features.

Table Device Code

Input Voltage 48V 36-55Vdc

Output Voltage

Output Current

Efficiency 94%

Connector Type

Through hole

Product codes QBK025A0B1

Comcode 108988663
48V 36-55Vdc 12V

Through hole QBK025A0B1-H
108988671
48V 36-55Vdc 12V

Through hole QBK025A0B741-BH
108989471
48V 36-55Vdc 12V

Through hole QBK025A0B41-BH

CC109125151
48V 36-55Vdc 12V

Through hole QBK025A0B41-PH
108992855
48V 36-55Vdc 12V

Through hole QBK025A0B71-BPH CC109104015
48V 36-55Vdc 12V

Through hole QBK025A0B741-BPH
108989348
48V 36-55Vdc 12V

Through hole QBK025A0B1Z

CC109107884
48V 36-55Vdc 12V

Through hole QBK025A0B41-BHZ CC109129243
48V 36-55Vdc 12V

Through hole QBK025A0B1-PHZ

CC109138541
48V 36-55Vdc 12V

Through hole QBK025A0B71-BHZ CC109139465

Table Device Options

Option Negative remote on/off logic Auto-restart Pin Length mm ± mm in. ± in Case ground pin offered with baseplate option only Base Plate option Active load sharing Parallel Operation Indicates RoHS Compliant part

Suffix 1 4 6 7 -H -P -Z

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 QBK025A0B1-H Datasheet file may be downloaded here without warranties.

Datasheet ID: QBK025A0B1-H 645720