QW030AJ1 - Tyco Electronics - Datasheet.Directory

Advance Data Sheet

September 2001

QW030xx DUAL Series Power Modules: dc-dc Converters;

18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

The QW030-Series Power Modules use advanced, surface-

mount technology and delive r high-quality, effici e nt, and

compact dc-dc conversion.

Applications

■Distributed power architectures

■Workstations

■Computer equipment

■Communications equipment

■Optical transport equipment

Options

■Heat sinks available for extended operation

■Choice of remote on/off logic configurations

■Choice of two pin lengths

Features

■Small size: 36.8 mm x 57.9 mm x 12.7 mm

(1.45 in. x 2.28 in. x 0.50 in.)

■High power density

■High efficiency: 88% typical

■Low output n oise

■Constant frequency

■Industry-standard pinout

■Metal cas e

■2:1 input voltage range

■Overvoltage and overcurrent protection

■Remote on/off

■Adjustable output voltage

■

ISO

* 9001 and

ISO

14001 Certified manufacturing

facilities

■

†

60950 Recognized,

CSA

‡ C22.2 No . 60950-00

Certified,

VDE

§ 0805 (IEC60950) Licensed

■CE mark meets 73/23/EEC and 93/68/EEC

directives**

ISO

is a registered trademark of the International Organization

for Standardization.

†

is a registered trademark of Underwriters Laboratories, Inc.

‡

CSA

is a registered trademark of Canadian Standards Assn.

VDE

is a trademark of Verband Deutscher Elektrotechniker e.V.

**This product is intended f or integration into end-use equipment.

All the required procedures for CE marking of end-use equip-

ment should be followed. (The CE mark is placed on selected

products.)

Description

The QW030-Series P o wer Modules are dc-dc converters that operate over an input voltage range of 36 Vdc to

75 Vdc and provide precisely regulated dc outputs. The outputs are fully isolated from the inputs, allowing ver-

satile polarity configurations and grounding connections. The modules have maximum power ratings of 30 W to

36 W at a typical full-load efficiency of up to 88%.

These encapsulated modules off er a metal case for optimum 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 conv enient flexibility in distributed power

applications.

2Tyco Electronics Corp.

Advance Dat a She et

September 2001

18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

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.

* Maximum case temperature v aries based on power dissipation. See power derating curv es for details.

Electrical Specifications

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

conditions.

Table 1. Input Specifications

Fusing Considerations

CAUTION: This power module is not internally fused. An input line fuse must always be used.

This encapsulated power module can be used in a wide variety of applications, ranging from simple stand-alone

operation to an integrated part of a sophisticated power architecture. To preserve maximum flexibility, internal

fusing is not included; however, to achieve maximum safety and system protection, always use an input line fuse.

The safety agencies require a normal-blow fuse with a maximum rating of 5 A (see Safety Considerations section).

Based on the information provided in this data sheet on inrush energy and maximum dc input current, the same

type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data for further information.

Parameter Device Symbol Min Max Unit

Input Voltage:

Continuous

Transient (100 ms) QW030xx

QW030xx

VI, trans

—

—80

100 Vdc

Operating Case Temperature

(See Therma l Considerations section.) QW030xx Tc –40 105* °C

Storage Temperature QW030xx Tstg –55 125 °C

I/O Isolation Voltage

(Note case is tied to input) QW030xx — — 1500 Vdc

Parameter Device Symbol Min Typ Max Unit

Operating Input Voltage:

QW030xx QW030xx VI36 48 75 Vdc

Maximum Input Current

(VI = 0 V to 75 V; IO = IO, max):

QW030xx QW030xx II, max ——2.2A

Inru sh Transien t QW030x x i2t——0.2A

Input Reflected-ripple Current, Peak-to-peak

(5 Hz to 20 MHz, 12 µH source impedance;

see Test Configurations section.)

QW030xx I 15 — mAp-p

Input Ripple Rejection (120 Hz) QW030xx — — 50 — dB

Tyco Electronics Corp. 3

Advance Data Shee t

September 2001 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Electrical Specifications (continued)

Table 2. Output Specifications

* Engineering estimate.

!Itot = I01+I02 Sum should not exc eed this number

Parameter Device

Suffix Symbol Min Typ Max Unit

Output Voltage Set Poi nt

(VI = 48 V; IO1 = IO2,= IO,min)CL

VO1, set

VO2, set

VO1, set

VO2, set

VO1, set

VO2, set

14.7

-14.7

11.76

-11.76

4.85

-4.85

—

15.3

-15.3

12.24

-12.24

5.15

-5.15

Vdc

Output Voltage

(Over all operating input voltage, resistive

load, and temperature conditions until end of

life. See Test Configurations section.)

VO1

VO2

VO1

VO2

VO1

VO2

13.8

-13.8

11.04

-11.04

4.75

-4.75

—

16.2

-16.2

12.96

-12.96

5.25

-5.25

Vdc

Output Voltage Regu lat ion

Line (VI = VI,min to VI,max; I01=I02)

Load (VI = VI,nom; I01 = I01min to Itot/2 and

I02 = I02min to Itot/2)

Cross Regulation V01, V02

(VI=VI,nom; I01 or I02= other output = max

load)

Temperature (Tc = -40 to 100)

Qx030xx

V01,V02

V01+V02

V01,V02

0.5

0.25

±4

0.5

0.75

0.5

±6

Output Ripple and Noise Voltage

(See Test Configurations section.):

Measured across one 2.2 µF ceramic

capacitor:

RMS

Peak-to-peak (5 Hz to 20 MHz)

—

150

120

150

mVrms

mVp-p

mVrms

mVp-p

mVrms

mVp-p

External Load Capacitance on each output Qx030xx — 0 — 220 µF

Output Curr ent

(At I O < IO,min the module may exceed the

ripple specifications)

I01

I02

Itot!

I01

I02

Itot!

I01

I02

Itot!

0.25

0.5

0.25

0.5

0.25

0.5

—

1.75

2.0

2.5

3.0

Output Cur rent- limi t Ince pti on

(VO = 90% of VO, set)CL

Itot

—

3.0

3.7

—

Output Short-circuit Current (VO = 0.25 V) CL

Itotsc

—

4.5

5.5

—

4Tyco Electronics Corp.

Advance Dat a She et

September 2001

18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Electrical Specifications (continued)

Table 2. Output Specifications (continued)

* Engineering estimate.

Tab le 3. Isolation Specifications

Table 4. General Specifications

Parameter Device

Suffix Symbol Min Typ Max Unit

Effici ency (VI = 48 V; IO = IO, max):

TA = 25 °C

TC = 25 °C

—

Switchi ng Frequency QW030 xx — — 360 — kHz

Dynamic Response

(∆IO/∆t = 1 A/10 µs, VI = 48 V, TC = 25 °C):

Load Change from IO = 50% to 75% of IO, max:

Peak Deviation

Settling Time (V O < 10% of peak deviation)

Load Change from IO = 50% to 25% of IO, max:

Peak Deviation

Settling Time (V O < 10% of peak deviation)

QW030xx

—

2.5

5.0

2.5

5.0

—

%VO, set

Parameter Device Min Typ Max Unit

Isolation Capacitance (engineering estimate) QW030xx — 600 — pF

Isolation Resistance QW030xx 10 — — MΩ

Parameter Device Min Typ Max Unit

Calculated MTBF

(IO = 80% of IO, max; TC = 40 °C) QW030xx 5,000,000 hours

Weight QW030xx — — 75 (2.7) g (oz.)

Tyco Electronics Corp. 5

Advance Data Shee t

September 2001 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Feature Specifications

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

conditions. See Feature Descriptions section of this data sheet for additional information.

* Engineering estimate.

Parameter Device

Suffix Symbol Min Typ Max Unit

Remote On/Off Signal Interface

(VI = VI, min to VI, max; open collector or equiv alent

compatible; signal referenced to VI(–) terminal.):

Negative Logic: Device Code Suffix “1”:

Logic Low—Module On

Logic High—Module Off

Positive Logic: If Device Code Suffix “1” Is Not

Specified:

Logic Low—Module Off

Logic High—Module On

Module Specifications:

On/Off Curr ent— Log ic Low

On/Off Voltage:

Logic Low

Logic High (Ion/off = 0 mA)

Open Collector Switch Specifications:

Leakage Current During Logic High

(Von/off = 15 V)

Output Low Voltage During Logic Low

(Ion/off = 1 mA)

All

Ion/off

Von/off

Ion/off

Von/off

—

–0.7

—

1.0

1.2

µA

Tur n-on Delay and Rise Times

(at 80% of IO, max; TA = 25 °C):

Case 1: On/Off Input Is Set for Logic High and

then Input Power Is Applied (delay from point

at which VI = VI, min unti l VO = 10% of VO, nom).

Case 2: Input Power Is Applied for at Least One

Second, and Then the On/Off Input Is Set to

Logic High (delay from point at which Von/off =

0.9 V until VO = 10% of VO, nom).

Output Voltage Rise Time (time for VO to rise

from 10% of VO, nom to 90% of VO, nom)

Output Voltage Overshoot (at 80% of IO, max;

TA = 25 °C)

All

Tdelay

Trise

—

Output Voltage Adjustment

(See Feature Descriptions section.):

Output Voltage Set-point Adjustment Range

(trim) QW030xx — 75 — 110 %VO, nom

Output Overvoltage Protection (clamp) CL

VO1, ovp

VO2, o vp

VO1, ov p

VO2, ov p

VO1, ovp

VO2, o vp

17.1

-17.1

13.7

-13.7

5.9

-5.9

—

22.5

-22.5

18.0*

-18.0*

-7

6Tyco Electronics Corp.

Advance Dat a She et

September 2001

18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Feature Specifications (continued)

* Engineering estimate.

Parameter Device

Suffix Symbol Min Typ Max Unit

Overtemperature Protection

(VI = 75 V, Itot = 3 A, see Fi gure 28.): QW030xx Tcase — 115 — °C

Undervoltage Lockout:

QW030xx QW030xx — — 27 — V

Characteristic Curves

1-0???

Figure 1. Typical QW030BK Input Characteristics

at Room Temperature

1-0???

Figure 2. Typical QW030CL Input Characteristics

at Room Temperature

1-0???

Figure 3. T ypical QW030AJ Input Characteristics at

Room Temperature

1-0???

Figure 4. T ypical QW030BK Output Characteristics

at Room Temperature

Missing Graph

Missin g Grap h

Missing Graph

Tyco Electronics Corp.

Advance Data Shee t

September 2001 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Characteristic Curves (continued)

1-0???

Figure 5. Typical QW030CL Output Characteristics

at Room Temperature

1-0???

Figure 6. Typical QW030AJ Output Characteristics

at Room Temperature

1-0???

Figure 7. Typical QW030B K Efficie ncy vs. Outpu t

Current at Room Temperature

1-0???

Figure 8. Typical QW030CL Efficiency vs. Output

Current at Room Temperature

Missin g Grap h

Missing Graph

88 Tyco Electronics Corp.

Advance Dat a She et

September 2001

18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Ion/off

Von/off

REMOTE

ON/OFF

VI(+)

VI(-)

Characteristic Curves (continued)

1-0???

Figure 9. Typical QW030AJ Efficiency vs. Output

Current at Room Temperature

1-0???

Figure 10.Typical QW030BK Output Ripple Voltage

at Room Temperature, IO = IO,max

1-0???

Figure 11.Typical QW030CL Output Ripple Voltage

at Room Temperature, IO = IO, max

1-0???

Figure 12.Typical QW030AJ Output Ripple Voltage

at Room Temperature, IO = IO, max

Missing Graph

Tyco Electronics Corp. 9

Advance Data Shee t

September 2001 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Characteristic Curves (continued)

1-0???

Note: Tested with a ______µF tantalum and a ________µF ceramic

capacitor across the load.

Figure 13.T ypical QW030BK Transient Response to

Step Increase in Load from 50% to 75% of

IO, max at Room Temperature and 48 Vdc

Input (Waveform Averaged to Eliminate

Ripple Component.)

1-0???

Note: Tested with a ______µF tantalum and a ________µF ceramic

capacitor across the load.

Figure 14.Typical QW030CL Transient Response to

Step Increase in Load from 50% to 75% of

IO, max at Room Temperature and 48 Vdc

Input (Waveform Averaged to Eliminate

Ripple Component.)

1-0???

Note: Tested with a ______µF tantalum and a ________µF cer ami c

capacitor across the load.

Figure 15.Typical QW030AJ Transient Response to

Step Increase in Load from 50% to 75% of

IO, max at Room Temperature and 48 Vdc

Input (Waveform Averaged to Eliminate

Ripple Component.)

1-0???

Note: Tested with a ______µF tantalum and a ________µF cer ami c

capacitor across the load.

Figure 16.T ypical QW030BK Transient Response to

Step Increase in Load from 50% to 25% of

IO, max at Room Temperature and 48 Vdc

Input (Waveform Averaged to Eliminate

Ripple Component.)

Missi ng Grap h

Missing Graph

1010 Tyco Electronics Corp.

Advance Dat a She et

September 2001

18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Characteristic Curves (continued)

1-0???

Note: Tested with a ______µF tantalum and a ________µF ceramic

capacitor across the load.

Figure 17.Typical QW030CL Transient Response to

Step Increase in Load from 50% to 25% of

IO, max at Room Temperature and 48 Vdc

Input (Waveform Averaged to Eliminate

Ripple Component.)

1-0???

Note: Tested with a ______µF tantalum and a ________µF ceramic

capacitor across the load.

Figure 18.Typical QW030AJ Transient Response to

Step Increase in Load from 50% to 25% of

IO, max at Room Temperature and 48 Vdc

Input (Waveform Averaged to Eliminate

Ripple Component.)

1-0???

Note: Tested with a ______µF tantalum and a ________µF cer ami c

capacitor across the load.

Figure 19.Typical QW030BK Start-Up from Remote

On/Off; IO = IO, max

1-0???

Note: Tested with a ______µF tantalum and a ________µF cer ami c

capacitor across the load.

Figure 20.Typical QW030CL tart-Up from Remote

On/Off; IO = IO, max

Missing Graph

Missi ng Grap h

Tyco Electronics Corp. 11

Advance Data Shee t

September 2001 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Characteristic Curves (continued)

1-0???

Note: Tested with a ______µF tantalum and a ________µF ceramic

capacitor across the load.

Figure 21.Typical QW030AJ Start-Up from Remote

On/Off; IO = IO, max

Test Configurations

8-203.i

Note: Measure input reflected-ripple current with a simulated source

inductance (LTEST) of 12 µH. Capacitor CS offsets possible bat-

tery impedance. Measure current as shown above.

Figure 22.QW030-Series Input Reflected-Ripple

Test Setup

1-0214

Note: Use the capacitor(s) ref erenced in the Output Ripple and Noise

V olt age specifications in the Output Specifications table. Scope

measurement should be made using a BNC socke t. Position

the load between 51 mm and 76 mm (2 in. and 3 in.) from the

module.

Figure 23.QW 030 -Ser ies Peak-to-Peak Output

Noise Measurement Test Setup

1-0215

Note: All measurements are taken at the module terminals. When

socket ing, place Kelvin connections at module terminals to

av oid measurement errors due to socket contact resistance.

Figure 24.QW 030 -Ser ies Out pu t Voltage and

Efficiency Measurement Test Setup

Missing Graph

TO OSCILLOSCOPE

12 µH

CS 220 µF

ESR < 0.1 Ω

@ 20 ˚C, 100 kHz

VI(+)

VI(-)

BATTERY

LTEST

33 µF

ESR < 0.7 Ω

@ 100 kHz

CURRENT

PROBE

RESISTIVE

LOAD

SCOPE

COPPER STRIP

RESISTIVE

LOAD

SEE NOTE

VO1(+)

COM

VO2(–)

IO1

SUPPLY

CONTACT

RESISTANCE

CONTACT AND

DISTRIBUTION LOSSES

LOAD

VO1(+)

VI(+)

VI(–)

COM

VO2(–)

IO2

J1=VOJ(+) VCOM

–[]IOJ

VI(+) –VI(–)[]II

---------------------------------------------------------------------------- x 100 %=

1212 Tyco Electronics Corp.

Advance Dat a She et

September 2001

18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Design Considerations

Gr ounding Considerations

For the QW modules, the case is internally connected

to the VI(+) pin.

Input Source Impedance

The power module should be connected to a low

ac-impedance input source. Highly inductive source

impedances can aff ect the stability of the power mod-

ule. If the input source inductance exceeds 4 µH, a

33 µF electrolytic capacitor (ESR < 0.7 ¾ at 100 kHz)

mounted close to the power module helps ensure sta-

bility of the unit.

Safety Considerations

QW Modules

For safety-agency approval of the system in which the

power module is used, the power module must be

installed in compliance with the spacing and separation

requirements of the end-use safety agency standard,

i.e.,

60950,

CSA

C22.2 No. 60950-00, and

VDE

0805 (IEC60950).

If the input source is non-SELV (ELV or a hazardous

voltage greater than 60 Vdc and less than or equal to

75 Vdc), for the module’s output to be considered

meeting the requirements of safety extra-low voltage

(SELV), all of the following must be true:

■The input source is to be provided with reinforced

insulation from any hazardous voltages, including the

ac mains.

■One VI pin and one VO pin are to be grounded, or

both the input and output pins are to be kept floating.

■The input pins of the module are not operator acces-

sible.

■Another SELV reliability test is conducted on the

whole system, as required by the safety agencies, on

the combination of supply source and the subject

module to verify that under a single fault, hazardous

voltages do not appear at the module’s output.

Note: Do not ground either of the input pins of the

module without grounding one of the output pins.

This may allow a non-SELV voltage to appear

between the output pin and ground.

The power module has e xtra-low voltage (ELV) outputs

when all inputs are ELV.

The input to these units is to be provided with a maxi-

mum 5 A normal-blow fuse in the ungrounded lead.

Feature Descriptions

Overcurrent Protection

To provide protection in a fault (output overload) condi-

tion, the unit is equipped with internal current-limiting

circuitry and can endure current limiting for an unlim-

ited duration. At the point of current-limit inception, the

unit shifts from voltage control to current control. If the

output voltage is pulled very low during a severe fault,

the current-limit circuit can exhibit either foldback or

tailout characteristics (output-current decrease or

increase). The unit operates normally once the output

current is brought back into its specified range.

Remote On/Off

Two remote on/off options are available . Positive logic

remote on/off turns the module on during a logic-high

voltage on the remote ON/OFF pin, and off during a

logi c lo w. Ne gative logi c rem ote on/ off, de vi ce co de suf -

fix “1,” turns the module off during logic-high voltage

and on during a logic low.

To turn the power module on and off, the user must

supply a switch to control the voltage between the

on/off terminal and the VI(–) ter mi nal (Von/off). The

switch ma y be an open collector or equivalent (see

Figure 25). A logic low is Von/off = –0.7 V to 1.2 V. The

maximum Ion/off during a logic low is 1 mA. The switch

should maintain a logic-low voltage while sinking 1 mA.

During a logic high, the maximum Von/off generated by

the power module is 15 V. The maximum allowable

leakage current of the switch at Von/off = 15 V is 50 µA.

Tyco Electronics Corp. 13

Advance Data Shee t

September 2001 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Feature Descriptions (continued)

Remote On/Off (continued)

If not using the remote on/off feature, do one of the

following:

For positiv e logic, leave the ON/OFF pin open.

For negative logic, short the ON/OFF pin to VI(–).

8-758(C).a

Figure 25.QW030-Series Remote On/Off

Implementation

Output Voltage Set-Point Adjustment

(Trim)

Output voltage trim allows the user to increase or

decrease the output voltage set point of a module. This

is accomplished by connecting an external resistor

between the TRIM pin and either the V01(+) or V02(–)

pins. The trim resistor should be positioned close to the

module.

If not using the trim feature, leave the TRIM pin open.

With an external resistor between the TRIM and V01(+)

pins (Radj-up), the output voltage set point (VO, adj)

increases (see Figure 26). The following equation

determines the required external-resistor value to

obtain a change in output voltage from VO, nom to VO, adj.

With an external resistor connected between the TRIM

and V02(–) pins (Radj-down), the output voltage set point

(VO, adj) decreases (see Figure 27).

The following equation determines the required exter-

nal-resistor value to obtain a change in output voltage

from VO, nom to VO, adj.

The voltage between the VO1(+)and Com., and

VO2(–)and Com. terminals must not exceed the mini-

mum output overvoltage protection value shown in the

Feature Specifications table. This limit includes any

increase in voltage due to remote-sense compensation

and output v oltage set-point adjustment (trim). See Fig-

ure 26.

Consult your Tyco Electronics’ Account Manager or

Application Engineer if the output voltage needs to be

increased more than the above limitation.

The amount of power delivered by the module is

defined as the v oltage at the output terminals multiplied

by the output current. When using trim, the output volt-

age of the module can be increased, which at the same

output current would increase the power output of the

module. Care should be taken to ensure that the maxi-

mum output power of the module remains at or below

the maximum rated power.

8-715.v

Figure 26.QW 030 -Ser ies Circuit Configur ation to

Increase Output Voltage

Ion/off

Von/off

REMOTE

ON/OFF

VI(+)

VI(-)

Radj-up Vo,adj

Vo,adj - Vo,nom

---------------------------------------- 2xVo,nom

1.225

------------------------- -1





• 10000 - 1000=

Radj-down 10000 Vo,adj×

Vo,nom Vo,adj–

-----------------------------------------





- 1000=

VI(+)

VI(-)

ON/OFF

(+)

(-)

TRIM Radj-up RLOAD1

V01

V02

RLOAD2

COM

1414 Tyco Electronics Corp.

Advance Dat a She et

September 2001

18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

.Feature Descriptions (continued)

Output Voltage Set-Point Adjustment

(Trim)(continued)

8-715.vf

Figure 27.QW030-Series Circuit Configuration to

Decrease Output Voltage

Output Overvoltage Protection

The output overvoltage clamp consists of control

circuitry, independent of the primary regulation loop,

that monitors the voltage on the output terminals. This

control loop has a higher voltage set point than the

primary loop (see the Feature Specifications table). In

a fault condition, the overvoltage clamp ensures that

the output voltage does not exceed VO, clamp, max. This

provides a redundant voltage-control that reduces the

risk of output overvoltage.

Overtemp erature Protection

These modules feature overtemperature protection to

safeguard the modules against thermal damage.

When the temperature exceeds the overtemperature

thresho ld given in the fea tur e speci fi cat ion s table, the

module will limit the available output current in order to

help protect against thermal damage. The overcurrent

inception point will gradually move back to its original

level as the module is cooled below the overtempera-

ture threshold.

Input Undervoltage Lockout

At input voltages below the input undervoltage lockout

limit, the module operation is disabled. The module will

begin to operate at an input voltage between the under-

voltage lockout limit and the minimum operating input

voltage.

Thermal Considerations

Introduction

The power modules operate in a variety of thermal

environments; however, sufficient cooling should be

provided to help ensure reliable operation of the unit.

Heat-dissipating components inside the unit are ther-

mally coupled to the case. Heat is removed by conduc-

tion, convection, and radiation to the surrounding

environment. Proper cooling can be verified by mea-

suring the case temperature. The case temperature

should be measured at the position indicated in

Figure 28.

8-2104.a

Note: Top view, pin locations are for reference only.

Measurements shown in millimeters and (inches).

Figure 28.QW 030 -Ser ies Case Temper atu re

Measurement Location

The temperature at this location should not exceed

105 °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 105 °C, you can limit this temperature to a

lower value for extremely high reliability.

(+)

(-)

ON/OFF

(+)

2(-)

TRIM

COM

adj-down

LOAD1

LOAD2

(0.55)

VI(-)

ON/OFF

VI(+)

(-)

TRIM

(+)

33 (1.30)

COM

Tyco Electronics Corp. 15

Advance Data Shee t

September 2001 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Thermal Considerations (continued)

Heat Transfer Without Heat Sinks

Increasing airflow over the module enhances the heat

transfer via convection. Figures 29 and 31 show the

maximum power that can be dissipated by the module

without exceeding the maximum case temperature ver-

sus local ambient temperature (TA) for natural convec-

tion through 3 m/s (600 ft./min.).

Systems in which these power modules may be used

typically generate natural convection airflow rates of

0.3 ms–1 (60 ft./min.) due to other heat-dissipating com-

ponents in the system. Therefore, the natural convec-

tion condition represents airflow rates of up to 0.3 ms–1

(60 ft./min.). Use of Figure 29 is shown in the following

example.

Example

What is the minimum airflow necessary for a

QW030BK operating at VI = 48 V, an output current of

1.5 A, each and a maximum ambient temperature of 89

°C?

Solution

Given: VI = 48 V

IO1 = 0.5 A, IO2 = 2.25 A

TA = 89 °C

Determine PD (Use Figure 30.):

PD = 4.5 W

Determine airflow (v) (Use Figure 29.):

v = 3.0 m/s (600 ft./min.)

1-0206

Figure 29.QW030BK POWER DERATING CURVE

1-0204

Figure 30.QW 030 BK Power dissipation With

Balanced Loads

1-0205

Figure 31.QW 030 BK Power Dissipation with

Unbalanced Loads with Io1 = 0.5 A

LOCAL AMBIENT TEMPERATURE, TA ( C)

POWER DISSIPATION, PD (W)

40 50 60 70 80 90 110100

7.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0

3.0 m/s (600 ft./min.)

2.0 m/s (400 ft./min.)

1.0 m/s (200 ft./min.)

NATURAL CONVECTION

MAX CASE TEMP.

OUTPUT CURRENT, IO1 = IO2 (A)

POWER DISSIPATION, PD (W)

0 0.5 1 1.5 2 2.5

VI = 48 V

VI = 36 V

VI = 75 V

OUTPUT CURRENT, IO2 (A)

POWER DISSIPATION, PD (W)

0 0.5 1 1.5 2 2.5

VI = 48 V

VI = 36 V

VI = 75 V

3.0

1616 Tyco Electronics Corp.

Advance Dat a She et

September 2001

18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Thermal Considerations (continued)

Heat Transfer with Heat Sinks

The power modules have through-threaded, M3 x 0.5

mounting holes, which enable heat sinks or cold plates

to attach to the module. The mounting torque must not

exceed 0.56 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 0.130

± 0.005 inches. The mounting torque from the pin side

must not exceed 0.25 N-m (2.2 in.-lbs.) .

Thermal derating with heat sinks is e xpressed by using

the overall thermal resistance of the module. Total

module thermal resistance (θca) is defined as the max-

imum case temperature rise (∆TC, max) divided by the

module power dissipation (PD):

The location to measure case temperature (TC) is

shown in Figure 28. Consult your Tyco Electronics’

Account Manager or Application Engineer for case-to-

ambient thermal resistance vs. airflow for various heat

sink configurations, heights, and orientations. Longitu-

dinal orientation is defined as the long axis of the mod-

ule that is parallel to the airflow direction, whereas in

the transverse orientation, the long axis is perpendicu-

lar to the airflow. These curves are obtained by experi-

mental testing of heat sinks, which are offered in the

product catalog.

These measured resistances are from heat transfer

from the sides and bottom of the module as well as the

top side with the attached heat sink; therefore, the

case-to-ambient thermal resistances shown are gener-

ally lower than the resistance of the heat sink by itself.

The module used to collect the data in the case-to-

ambient thermal resistance curves had a thermal-con-

ductive dry pad between the case and the heat sink to

minimize contact resistance.

Custom Heat Sinks

A more detailed model can be used to determine the

required thermal resistance of a heat sink to provide

necessary cooling. The total module resistance can be

separated into a resistance from case-to-sink (θcs) and

sink-to-ambient (θsa) as shown in Figure 32.

8-1304

Figure 32. QW030-Series Resistance from Case-to-

Sink and Sink-to-Ambient

For a managed interface using thermal grease or f oils,

a value of θcs = 0.1 °C/W to 0.3 °C/W is typical. The

solution for heat sink resistance is:

This equation assumes that all dissipated power must

be shed by the heat sink. Depending on the user-

defined application environment, a more accurate

model, including heat transfer from the sides and bot-

tom of the module, can be used. This equation pro-

vides a conservative estimate for such instances.

Layout Considerations

Copper paths must not be routed beneath the power

module standoffs. F or additional lay out guidelines, ref er

to the FLTR100V10 or FLTR100V20 data sheet.

θca ∆TC max,

-------------------

[]

TCTA

–()

------------------------

θcs θsa

→

θsa TC TA–()

--------------------------- θcs–=

Tyco Electronics Corp. 17

Advance Data Shee t

September 2001 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Outline Diagram

Dimensions are in millimeters and (inches).

Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.)

x.xx mm ± 0.25 mm (x.xxx in. ± 0.010 in.)

Top View

Side View

Bottom View

8-1769

* Side label includesTyco name, product designation, safety agency markings, input/output voltage and current ratings, and bar code.

57.9

(2.28)

36.8

(1.45)

SIDE LABEL *

1.02 (0.040) DIA

SOLDER-PLATED

BRASS, ALL PLACES

12.7

(0.50)

0.51

(0.020)

4.1 (0.16) MIN,

ALL PLACES

6.1 (0.24), 4 PLACES

SIDE LABEL *

3.6

(0.14)

10.9

(0.43)

5.3

(0.21)

26.16

(1.030)

15.24

(0.600)

5.3

(0.21)

MOUNTING INSERTS

M3 x 0.5 THROUGH,

2 PLACES

(-)

COM

TRIM

(+)VI(+)

ON/OFF

(-)

3.81

(0.150)

7.62

(0.300)

11.43

(0.450)

15.24

(0.600)

50.80

(2.000)

7.62

(0.300) 47.2

(1.86)

V02

V01

18 Tyco Electronics Corp.

Advance Dat a She et

September 2001

18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Recommended Hole Patter n

Component-side footprint.

Dimensions are in millimeters and (inches).

8-1769p2

Ordering Information

Please contact your Tyco Electronics’ Account Manager or Field Application Engineer f or pricing and availability.

Table 5. Device Codes

Table 6. Device Options

Input

Voltage Output

Power Output

Current Remote On/

Off Logic Device

Code Comcode

48 Vdc +12, -12 36W 2.5A, 2.5A Negative QW030BK1 108958885

48 Vdc +15, -15 30W 1.75A, 1.75A Negative QW030CL1 108962176

48 Vdc +5, -5 30W 3A, 3A Negative QW030AJ1 108963687

Option Device Code Suffix

Short pins: 2.79 mm ± 0.25 mm

(0.110 in. ± 0.010 in.) 8

Short pins: 3.68 mm ± 0.25 mm

(0.145 in. ± 0.010 in.) 6

Negative logic On/Off 1

3.6

(0.14)

10.9

(0.43)

26.16

(1.030)15.24

(0.600)

7.62

(0.300)

5.3

(0.21)

MOUNTING INSERTS

M3 x 0.5 THROUGH,

2 PLACES

(-)

TRIM

(+)

VI(+)

ON/OFF

(-)

50.80

(2.000)

5.3

(0.21)

47.2

(1.86)

15.24

(0.600)7.62

(0.300)

11.43

(0.450)

3.81

(0.150)

COM

Tyco Electronics Corp. 19

Advance Data Shee t

September 2001 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Device Accessories

Dimensions are in millimeters and (inches).

8-2473(F)

Figure 33. QW030-Dual Series Longitudinal Heat

Sink

8-2472(F)

Figure 34. Q W0 30-Du al Ser ies Transverse Heat

Sink

Accessory Comcode

1/4 in. transverse kit (heat sink, thermal pad, and screws) 848060992

1/4 in. longitudinal kit (heat sink, thermal pad, and screws) 848061008

1/2 in. transverse kit (heat sink, thermal pad, and screws) 848061016

1/2 in. longitudinal kit (heat sink, thermal pad, and screws) 848061024

1 in. transverse kit (heat sink, thermal pad, and screws) 848061032

1 in. longitudinal kit (heat sink, thermal pad, and screws) 848061040

26.16 ± 0.13

(1.030 ± 0.005)

57.91 ± 0.38

(2.280 ±0.015)

1/4 IN.

1/2 IN.

1 IN.

36.83

0.38

(1.450

0.015)

47.24

0.13

(1.850

0.005)

1/4 IN.

1/2 IN.

1 IN.

Advance Dat a She et

September 2001

18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW030xx DUAL Series Power Modules: dc-dc Converters;

Printed on

Recycled Paper

Tyco Electronics Power S ystems, I nc.

3000 Skyline Drive, Mesquite, TX 75149, USA

+1-800-526-7819 FAX: + 1-888-315-5182

(Outs ide U.S.A.: +1-972-284-2626, FAX: +1-972-2 84-29 0 0)

http://power.tycoelectronics.com

Tyco Electronics Corporation reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application.

No rights under any patent accompany the sale of any such product(s) or information.

Printed in U.S.A.

September 2001

ADS01-045EPS (Replaces DS00-404EPS)