QW030A1 - Tyco Electronics - Product.Network

Data Sheet

April 2002

QW/QC030-Series Power Modules: dc-dc Converters;

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

The QW/QC030-Series Power Modules use advanced, surface-

mount technology and deliver high-quality, efficient, 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: 86% typical

■Low output noise

■Constant frequency

■Industry-standard pinout

■Metal case

■2:1 input voltage range

■Overvoltage and overcurrent protection

■Remote on/off

■Remote sense

■Adjustable output voltage

■

ISO

* 9001 and

ISO

14001 Certified manufacturing

facilities

■

†

60950 Recognized,

CSA

‡ C22.2 No. 60950-00

Certified,

VDE

§ 0805 (EN60950-1) Licensed (For

QW030 only)

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

directives**(For QW030 only)

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 for 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 QC/QW030-Series Power Modules are dc-dc converters that operate over an input voltage range of

18 Vdc to 36 Vdc or 36 Vdc to 7 5Vdc 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 of 30 W at a typical full-load efficiency of up to 86%.

These encapsulated modules offer 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 convenient flexibility in distributed power

applications.

2Tyco Electronics Corp.

Data Sheet

April 2002

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

QW/QC030-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 varies based on power dissipation. See power derating curves 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 (for QW030) and 10 A (for QC030)

(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)

QC030x

QW030x

VI, trans

—

100

Vdc

Operating Case Temperature

(See Thermal Considerations section.)

AII Tc –40 105* °C

Storage Temperature AII Tstg –55 125 °C

I/O Isolation Voltage AII — — 1500 Vdc

Parameter Device Symbol Min Typ Max Unit

Operating Input Voltage:

QC030x

QW030x

All

Vdc

Maximum Input Current

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

QC030x

QW030x

All

—

3.5

2.2

Inrush Transient All i2t——0.2A

Input Reflected-ripple Current, Peak-to-peak

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

see Test Configurations section.)

All — 5 — mAp-p

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

Tyco Electronics Corp. 3

Data Sheet

April 2002 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW/QC030-Series Power Modules: dc-dc Converters;

Electrical Specifications (continued)

Table 2. Output Specifications

Parameter Device

Suffix Symbol Min Typ Max Unit

Output Voltage Set Point

(VI = 48 V; IO = IO, max; TC = 25 °C)

VO, set

3.23

4.92

11.80

14.55

3.3

5.0

12.0

15.0

3.37

5.12

12.30

15.48

Vdc

Output Voltage

(Over all operating input voltage, resistive

load, and temperature conditions until end of

life. See Test Configurations section.)

3.18

4.86

11.60

14.25

3.3

5.0

12.0

15.0

3.42

5.18

12.45

15.75

Vdc

Output Regulation:

Line (VI = 36 V to 75 V)

Load (IO = IO, min to IO, max)

Temperature (TC = –30 °C to +100 °C)

A, F

B, C

A, F

—

Output Ripple and Noise Voltage

(See Test Configurations section.):

Measured across one 4.7 µF ceramic

capacitor:

RMS

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

Measured across one 2.2 µF ceramic

capacitor:

RMS

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

B, C

—

mVrms

mVp-p

mVrms

mVp-p

External Load Capacitance A, F

B, C

—

1000

470

µF

Output Current

(At IO < IO, min, the modules may exceed output

ripple specifications.)

0.45

0.30

0.26

—

6.50

6.00

3.00

2.66

Output Current-limit Inception

(VO = 90% of VO, set)

—

7.5

7.0

3.7

3.3

—

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

—

11.5

9.5

5.5

4.5

—

4Tyco Electronics Corp.

Data Sheet

April 2002

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

QW/QC030-Series Power Modules: dc-dc Converters;

Electrical Specifications (continued)

Table 2. Output Specifications (continued)

* Engineering estimate.

Table 3. Isolation Specifications

Table 4. General Specifications

Parameter Device

Suffix Symbol Min Typ Max Unit

Efficiency (VI = 48 V; IO = IO, max):

TA = 25 °C F

B, C

—

Switching Frequency All — — 300 — kHz

Dynamic Response

(ýIO/ýt = 1 A/10 µs, VI = 48 V, TC = 25 °C):

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

Peak Deviation

Settling Time (VO < 10% of peak deviation)

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

Peak Deviation

Settling Time (VO < 10% of peak deviation)

A, C, F

B, C, F

A, C, F

B, C, F

—

2.0

2.5

5.0

3.0

2.0

2.5

5.0

3.0

—

%VO, set

Parameter Device Min Typ Max Unit

Isolation Capacitance (engineering estimate) All — 600 — pF

Isolation Resistance All 10 — — MΩ

Parameter Device Min Typ Max Unit

Calculated MTBF

(IO = 80% of IO, max; TA = 40 °C)

All 5,000,000 hours

Weight All — — 75 (2.7) g (oz.)

Tyco Electronics Corp. 5

Data Sheet

April 2002 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW/QC030-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.

Parameter Device

Suffix Symbol Min Typ Max Unit

Remote On/Off Signal Interface

(VI = VI, min to VI, max; open collector or equivalent

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 Current—Logic 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

Turn-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 until 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 V on/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 Remote-sense Range

Output Voltage Set-point Adjustment Range

(trim)

All

A, F

B, C

—

0.5

110

%VO, nom

Output Overvoltage Protection (clamp) F

VO, ovp

3.8

5.5

13.2

16.5

—

4.9

7.0

21.0

24.0

6Tyco Electronics Corp.

Data Sheet

April 2002

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

QW/QC030-Series Power Modules: dc-dc Converters;

Feature Specifications (continued)

Parameter Device

Suffix Symbol Min Typ Max Unit

Overtemperature Protection

(VI = 75 V, see Figure 8.):

IO = 6.5 A

IO = 6 A

IO = 3 A

IO = 2.66 A

Tcase

—

105

—

°C

Undervoltage Lockout:

QC030x

QW030x

All

—

Test Configurations

8-203(C).l

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 1. QC/QW030-Series Input Reflected-Ripple

Test Setup

8-513(C).s

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

Voltage specifications in the Output Specifications table. Scope

measurement should be made using a BNC socket. Position

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

module.

Figure 2. QC/QW030-Series Peak-to-Peak Output

Noise Measurement Test Setup

8-749(C)

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

socketing, place Kelvin connections at module terminals to

avoid measurement errors due to socket contact resistance.

Figure 3. QC/QW030-Series Output Voltage and

Efficiency Measurement Test Setup

Design Considerations

Grounding Considerations

For the QC modules, the case is internally connected

to the VI(–) pin. For the QW modules, the case is inter-

nally connected to the VI(+) pin.

TO OSCILLOSCOPE

12 µH

220 µF

ESR < 0.1 Ω

@ 20 ˚C, 100 kHz

(+)

(-)

BATTERY

TEST

33 µF

ESR < 0.7 Ω

@ 100 kHz

VO(+)

VO(–)

RESISTIVE

LOAD

SCOPE

COPPER STRIP

SEE NOTE

VI(+)

IIIO

SUPPLY

CONTACT

RESISTANCE

CONTACT AND

DISTRIBUTION LOSSES

LOAD

SENSE(+)

VI(-)

VO(+)

VO(-)

SENSE(-)

ηVO(+) VO(–)–[]IO

VI(+) VI(–)–[]II

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





100 %×=

Tyco Electronics Corp.

Data Sheet

April 2002 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW/QC030-Series Power Modules: dc-dc Converters;

Design Considerations (continued)

Input Source Impedance

The power module should be connected to a low

ac-impedance input source. Highly inductive source

impedances can affect the stability of the power mod-

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

33 µF electrolytic capacitor (ESR < 0.7 Ω 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 (EN60950-1).

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 extra-low voltage (ELV) outputs

when all inputs are ELV.

The input to the QW030 is to be provided with a maxi-

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

The input to the QC030 is to be provided with a maxi-

mum 10 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

logic low. Negative logic remote on/off, device code 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(–) terminal (Von/off). The

switch may be an open collector or equivalent (see

Figure 4). 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 V on/off = 15 V is 50 µA.

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

following:

For positive logic, leave the ON/OFF pin open.

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

8-758(C).a

Figure 4. QC/QW030-Series Remote On/Off

Implementation

Ion/off

Von/off

REMOTE

ON/OFF

VI(+)

VI(-)

88 Tyco Electronics Corp.

Data Sheet

April 2002

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

QW/QC030-Series Power Modules: dc-dc Converters;

Feature Descriptions (continued)

Remote Sense

Remote sense minimizes the effects of distribution

losses by regulating the voltage at the remote-sense

connections. The voltage between the remote-sense

pins and the output terminals must not exceed the out-

put voltage sense range given in the Feature Specifica-

tions table, e.g., on the QW030A:

[VO(+) – VO(–)] –[SENSE(+) – SENSE(–)] ≤ 0.5 V

The voltage between the VO(+) and VO(–) terminals

must not exceed the minimum output overvoltage pro-

tection value shown in the Feature Specifications table.

This limit includes any increase in voltage due to

remote-sense compensation and output voltage set-

point adjustment (trim). See Figure 5.

If not using the remote-sense feature to regulate the

output at the point of load, then connect SENSE(+) to

VO(+) and SENSE(–) to VO(–) at the module.

Although the output voltage can be increased by both

the remote sense and by the trim, the maximum

increase for the output voltage is not the sum of both.

The maximum increase is the larger of either the

remote sense or the trim. Consult your Tyco Electron-

ics’ Account Manager or Application Engineer if you

need to increase the output voltage more than the

above limitation.

The amount of power delivered by the module is

defined as the voltage at the output terminals multiplied

by the output current. When using remote sense and

trim, the output voltage 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 maximum output power of

the module remains at or below the maximum rated

power.

8-651(C).m

Figure 5. QC/QW030-Series Effective Circuit

Configuration for Single-Module Remote-

Sense Operation

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 SENSE(+) or

SENSE(–) 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

SENSE(+) pins (Radj-down), the output voltage set point

(VO, adj) decreases (see Figure 6). The following equa-

tion determines the required external-resistor value to

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

The values of G, H, and L are shown in Table 5.

The QC/QW030 modules have a fixed current-limit set

point. As the output voltage is adjusted down, the avail-

able output power is reduced.

With an external resistor connected between the TRIM

and SENSE(–) pins (Radj-up), the output voltage set

point (VO, adj) increases (see Figure 7).

The following equation determines the required exter-

nal-resistor value to obtain a change in output voltage

from VO, nom to VO, adj. The values of G, H, K, and L are

shown in Table 5.

Table 5. Values for Trim Equations

The voltage between the VO(+) and VO(–) terminals

must not exceed the minimum output overvoltage pro-

tection value shown in the Feature Specifications table.

This limit includes any increase in voltage due to

remote-sense compensation and output voltage set-

point adjustment (trim). See Figure 5.

VO(+)

SENSE(+)

SENSE(-)

VO(-)

VI(+)

VI(-)

IOLOAD

CONTACT AND

DISTRIBUTION LOSSES

SUPPLY II

CONTACT

RESISTANCE

Device

Suffix Vo, nom GHKL

F 3.3 5110 3010 2.06 1.24

A 5 5110 3010 2.5 2.5

B 12 10,000 3010 9.5 2.5

C 15 10,000 3010 12.5 2.5

Radj-down VO adj,L

–()

VOnom,VOadj,

–()

--------------------------------------- H

–Ω=

Radj-up

VOadj,L

–()

–[]

-----------------------------------------H

–





Ω=

Tyco Electronics Corp. 9

Data Sheet

April 2002 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW/QC030-Series Power Modules: dc-dc Converters;

Feature Descriptions (continued)

Output Voltage Set-Point Adjustment

(Trim) (continued)

Although the output voltage can be increased by both

the remote sense and by the trim, the maximum

increase for the output voltage is not the sum of both.

The maximum increase is the larger of either the

remote sense or the trim. Consult your Tyco Electron-

ics’ 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 voltage at the output terminals multiplied

by the output current. When using remote sense and

trim, the output voltage 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 maximum output power of

the module remains at or below the maximum rated

power.

8-715(C).i

Figure 6. QC/QW030-Series Circuit Configuration

to Decrease Output Voltage

8-748(C).f

Figure 7. QC/QW030-Series Circuit Configuration

to Increase 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.

Overtemperature Protection

These modules feature overtemperature protection to

safeguard the modules against thermal damage.

When the temperature exceeds the overtemperature

threshold given in the feature specifications 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.

(+)

(–)

ON/OFF

CASE

(+)

(-)

SENSE(+)

TRIM

SENSE(–)

adj-down

LOAD

VI(+)

VI(–)

ON/OFF

CASE

VO(+)

VO(–)

SENSE(+)

TRIM

SENSE(–)

Radj-up

RLOAD

1010 Tyco Electronics Corp.

Data Sheet

April 2002

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

QW/QC030-Series Power Modules: dc-dc Converters;

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 8.

8-2104(C).a

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

Measurements shown in millimeters and (inches).

Figure 8. QC/QW030-Series Case Temperature

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.

Heat Transfer Without Heat Sinks

Increasing airflow over the module enhances the heat

transfer via convection. Figures 9 and 10 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. 3ms–1

(60 ft./min.). Use of Figure 9 is shown in the following

example.

Example

What is the minimum airflow necessary for a QW030A

operating at VI = 48 V, an output current of 3.5 A, and a

maximum ambient temperature of 89 °C?

Solution

Given: VI = 48 V

IO = 3.5 A

TA = 89 °C

Determine PD (Use Figure 12.):

PD = 3 W

Determine airflow (v) (Use Figure 9.):

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

8-3406(F)

Figure 9. QW030A, F Forced Convection Power

Derating with No Heat Sink; Either

Orientation

(0.55)

VI(-)

ON/OFF

VI(+)

VO(–)

TRIM

VO(+)

(+)SENSE

(-)SENSE

33 (1.30)

40 50 60 70 80 90 100 110

MAX CASE TEMP.

MAX AMBIENT TEMPERATURE, TA (°C)

POWER DISSIPATION, PD (W)

2.0 ms -1 (400 ft./min.)

1.0 ms -1 (200 ft./min.)

NATURAL CONVECTION

3.0 ms -1 (600 ft./min.)

Tyco Electronics Corp. 11

Data Sheet

April 2002 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW/QC030-Series Power Modules: dc-dc Converters;

Thermal Considerations (continued)

Heat Transfer Without Heat Sinks (continued)

8-3366(C).a

Figure 10. QW030B, C Forced Convection Power

Derating with No Heat Sink; Either

Orientation

8-9439(C).a

Figure 11. QW030F Typical Power Dissipation vs.

Output Current at TA = 25 °C

8-9439(C)

Figure 12. QW030A Typical Power Dissipation vs.

Output Current at TA = 25 °C

8-3376(C)

Figure 13. QW030B Typical Power Dissipation vs.

Output Current at TA = 25 °C

4.5

2.5

50 60 70 9080 100

0.0

4.0

TEMPERATURE, TA (˚C)

3.0

3.5

2.0

1.5

11040

5.0

1.0

0.5

POWER DISSIPATION, PD (W)

6.0

5.5

NATURAL

CONVECTION

1.0 ms (200 ft./min.)

2.0 ms (400 ft./min.)

3.0 ms (600 ft./min.)

MAX CASE TEMPERATURE

MAX AMBIENT

1.3 2.3 3.3 4.3 5.3

OUTPUT CURRENT, IO

(A)

POWER DISSIPATION, PD (W)

6.30.3

VI = 75 V

VI = 48 V

VI = 36 V

7.3

1.3 2.3 3.3 4.3 5.3

OUTPUT CURRENT, IO (A)

(A)

POWER DISSIPATION, PD (W)

6.30.3

VI = 75 V

VI = 48 V

VI = 36 V

7.3

0.753 1.253 1.753 2.253 2.753 3.253

OUTPUT CURRENT, IO (A)

POWER DISSIPATION, PD (W)

0.253

VI = 75 V

VI = 48 V

VI = 36 V

1212 Tyco Electronics Corp.

Data Sheet

April 2002

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

QW/QC030-Series Power Modules: dc-dc Converters;

Thermal Considerations (continued)

Heat Transfer Without Heat Sinks (continued)

8-3287(C)

Figure 14. QW030C Typical Power Dissipation vs.

Output Current at TA = 25 °C

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 expressed 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 8. 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 15.

8-1304(C)

Figure 15. QC/QW030-Series Resistance from

Case-to-Sink and Sink-to-Ambient

For a managed interface using thermal grease or foils,

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. For additional layout guidelines, refer

to the FLTR100V10 or FLTR100V20 data sheet.

POWER DISSIPATION, PD (W)

0.77 1.27 1.77 2.772.27

OUTPUT CURRENT, IO (A)

0.27

VI = 75 V

VI = 48 V

VI = 36 V

θca ∆TCmax,

---------------------TCTA

–()

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

TCTSTA

θcs θsa

→

θsa TCTA

–()

-------------------------θcs–=

Tyco Electronics Corp. 13

Data Sheet

April 2002 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs

QW/QC030-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(F).c

* 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

– SENSE

TRIM

+ SENSE

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)

VO(+)

VO(–)

VI(–)

VI(+)

14 Tyco Electronics Corp.

Data Sheet

April 2002

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

QW/QC030-Series Power Modules: dc-dc Converters;

Recommended Hole Pattern

Component-side footprint.

Dimensions are in millimeters and (inches).

8-1769(F).c

Ordering Information

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

Table 6. Device Codes

Table 7. Device Options

Input

Voltage

Output

Voltage

Output

Power

Output

Current

Remote On/

Off Logic

Device

Code Comcode

48 Vdc 3.3 Vdc 21.5 W 6.5 A Negative QW030F1 108729807

48 Vdc 5 Vdc 30 W 6 A Negative QW030A1 108748344

48 Vdc 12 Vdc 36 W 3 A Negative QW030B1 108846171

48 Vdc 15 Vdc 40 W 2.66 A Negative QW030C1 108729799

48 Vdc 3.3 Vdc 21.5 W 6.5 A Positive QW030F TBD

48 Vdc 5 Vdc 30 W 6 A Positive QW030A 108710765

48 Vdc 12 Vdc 36 W 3 A Positive QW030B TBD

48 Vdc 15 Vdc 40 W 2.66 A Positive QW030C TBD

Option Device Code Suffix

Short pins: 2.79 mm ± 0.25 mm

(0.110 in. ± 0.010 in.)

Short pins: 3.68 mm ± 0.25 mm

(0.145 in. ± 0.010 in.)

Remote On/Off Logic - (Negative) 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

– SENSE

TRIM

+ SENSE

ON/OFF

5.3

(0.21)

47.2

(1.86)

15.24

(0.600)7.62

(0.300)

11.43

(0.450)

3.81

(0.150)

VO(+)

VO(–)

VI(–)

VI(+)

50.80

(2.000)

Data Sheet

April 2002

Tyco Electronics Corp. 15

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

QW/QC030-Series Power Modules: dc-dc Converters;

Device Accessories

Dimensions are in millimeters and (inches).

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

8-2473(F)

Figure 16. QC/QW030-Series Longitudinal Heat

Sink

8-2472(F)

Figure 17. QC/QW030-Series Transverse Heat Sink

1.030 ± 0.005

(26.16 ± 0.13)

2.280 ± 0.015

(57.91 ± 0.38)

1/4 IN.

1/2 IN.

1 IN.

1.450 ± 0.015

(36.83 ± 0.38)

1.850 ± 0.005

(47.24 ± 0.13)

1/4 IN.

1/2 IN.

1 IN.

Data Sheet

April 2002

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

QW/QC030-Series Power Modules: dc-dc Converters;

Printed on

Recycled Paper

World Wide Headquarters

Tyco Electronics Power Systems, Inc.

3000 Skyline Drive, Mesquite, TX 75149, USA

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

(Outside U.S.A.: +1-972-284-2626, FAX: +1-972-284-2900)

www.power.tycoelectronics.com

e-mail: techsupport1@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.

April 2002

FDS01-041EPS (Replaces DS00-246EPS)

Europe, Middle-East and Africa Headquarters

Tyco Electronics (UK) Ltd

Tel: +44 (0) 1344 469 300, Fax: +44 (0) 1344 469 301

Central America-Latin America Headquarters

Tyco Electronics Power Systems

Tel: +54 11 4316 2866, Fax: +54 11 4312 9508

Asia-Pacific Headquarters

Tyco Electronics Singapore Pte Ltd

Tel: +65 482 0311, Fax: 65 480 9299