JAHW050F1-S - GE Energy - Product.Network

Data Sheet

Novemb er 2000

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

36 Vdc to 75 Vdc Input, 3.3 Vdc Output; 50 W to 75 W

Applications

■Distr i buted power architecture s

■Computer equ ipm ent

■Communications equipment

Options

■Choice of remote on/off logic configuration

■Basic Insulation (-SB version only)

Features

■Surface-mount, open-frame package with industry-

standard pin pattern

■Low profile: 10.16 mm (0.40 in.)

■Small size: 54.36 mm x 57.40 mm x 10.16 mm

(2.14 in. x 2.26 in. x 0.40 in.)

■High power density

■Very high efficiency: 89% typical

■Low output n oise

■Constant frequency

■2:1 input voltage range

■Ov ercur rent prot ection

■Remote sense

■Adjustable output voltage

■Output overvoltage protection

■Remote on/off

■Ov ertemperat ure pro tection

■

ISO

* 9001 Certified manufacturing facilities

■Meets the voltage isolation requirements for

ETSI 300-321-2 and complies with and is Licensed

for Basic Insulation rating per EN60950

(-SB version only)

■

†1950

Recognized,

CSA

‡ C22.2 No. 950-95

Certified, and

VDE

§ 0805 (EN60950, IEC950)

Licensed

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

tives**

The JAHW-S Series Power Modules offer a surface-mount

package, high efficiency, and high reliability.

Description

The JAHW050F-S and JAHW075F-S Power Modules are surface-mount 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 iso-

lated 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 89%.

The open frame modules offer e xcellent thermal performance. The standard f eature set includes remote sensing,

output trim, and remote on/off for conv enient fle xibility in distributed power applications.

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 Association.

VDE

is a trademark of Verband Deutscher Elektrotechniker e.V.

** This product is intended for integr ation 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.)

2Tyco Electronics Corp.

Data Sheet

November 200036 Vdc to 75 Vdc Input, 3.3 Vdc O utput; 50 W to 75 W

JAHW050F-S and JAHW075F-S 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 abso-

lute 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.

Electrical Specifications

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

conditions.

Table 1. Input Specifications

Fusing Considerations

An input line fuse (normal-blow) of an appropriate rating is provided for safety and system protection. A further

input lines fuse may always be used for additional safety and system protection.

Parameter Symbol Min Max Unit

Input Voltage:

Continuous

Transient (100 ms) VI

VI, trans —

—80

100 Vdc

Operating Ambient Temperature

(See Thermal Considerations section.) TA–40 100 °C

Storage Temperature Tstg –55 125 °C

I/O Isolation Voltage (for 1 minute) ——1500 Vdc

Parameter Symbol Min Typ Max Unit

Operating Input Voltage VI36 48 75 Vdc

Maximum Input Current:

VI = 0 V to 75 V; IO = IO, ma x; see Figures 1—2:

JAHW050F-S

JAHW075F-S

VI = 36 V to 75 V; IO = IO, max:

JAHW050F-S

JAHW075F-S

II, max

—

1.2

1.8

1.0

1.5

Inru sh Transient i2t——1.0 A2s

Input Reflected-ripple Current, Peak-to-peak

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

see Figure 12.)

II —5—mAp-p

Input Ripple Rejection (120 Hz) ——60 —dB

Tyco Electroni cs Corp. 3

Data Sheet

November 20 00 36 Vdc to 75 Vdc Input, 3.3 Vdc Output; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Electrical Specifications (continued)

Table 2. Output Specifications

* Con sult your sales representative or the factory.

† These are manufacturing test limits. In some situations, results may differ.

‡ This module does not have a tail-out feature but a hiccup mode with automatic restart, in the event of a current limit. The value given here is

an instantaneous peak value and not an RMS or continuous rating.

Table 3. Isolation Specifications

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set Point

(VI = 48 V; IO = IO, max; TA = 25 °C) All VO, set 3.25 3.3 3.35 Vdc

Output Voltage

(Over all operating input voltage, resistive load,

and temperature conditions until end of life . See

Figure 14.)

All VO3.20 —3.40 Vdc

Output Regulation:

Line (VI = 36 V to 75 V)

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

Temperature (TA = –40 °C to +100 °C)

All

—

0.01

0.05

0.1

0.2

%VO

Output Ripp le and Noise Volta ge

(See Figure 13.):

RMS

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

All —

——

—50

100 mVrms

mVp-p

External Load Capacitance All —0—*µF

Output Current

(At IO < IO, m in, the modules may exceed output

ripple specifications.)

JAHW050F-S

JAHW075F-S IO

IO0.5

0.5 —

—10

15 A

Output Current-limit Inception

(VO = 90% of VO, nom)JAHW050F-S

JAHW075F-S IO, cli

IO , cli —

—12

18 16.0†

21.9†A

Output Short-circuit Current (VO = 250 mV) All —0—35‡A

Efficiency (VI = 48 V; IO = IO, max; TA = 70 °C) JAHW050F-S

JAHW075F-S η

η—

—88.0

88.6 —

—%

Switching Frequency All ——350 —kHz

Dynamic Response

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

with a 10 µF tantalum and a 1.0 µF ceramic

capaci tor acros s the load.) :

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)

All

—

200

—

%VO, set

µs

%VO, set

µs

Parameter Min Typ Max Unit

Isolation Capacitance —2500 —pF

Isolation Resistance 10 ——MΩ

4Tyco Electronics Corp.

Data Sheet

November 200036 Vdc to 75 Vdc Input, 3.3 Vdc O utput; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

General Specifications

Feature Specifications

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

conditions. See Feature Descriptions for additional information.

* These are manufacturing test limits. In some situations, results may differ.

Solder Ball and Cleanliness Requirements

The open frame (no case or potting) power module will meet the solder ball requirements per J-STD-001B. These

requir e ment s st at e tha t solder bal l s mu st n eit her be lo ose no r viol at e t he powe r modu le m ini m u m el ectrica l sp aci ng.

The cleanliness designator of the open frame power module is C00 (per J specification).

Solder, Cleaning, and Drying Considerations

Post solder cleaning is usually the final circuit-board assembly process prior to electrical testing. The result of inad-

equate circuit-board cleaning and drying can affect both the reliability of a power module and the testability of the

finished circuit-board assembly. For guidance on appropriate soldering, cleaning, and drying procedures, refer to

the

Board-Mounted Power Modules Soldering and Cleaning

Application Note (AP97-021EPS).

Parameter Min Typ Max Unit

Calculated MTBF (IO = 80% of IO, m ax; TA = 20 °C) 6,000,000 hours

Weight ——38 (1.34) g (oz.)

Parameter Symbol Min Typ Max Unit

Remote On/Off Signal Interface

(VI = 0 V to 75 V; open collector or equivalent compatible;

signal ref erenced to VI(–) terminal ; see Fi gu re 15 and

Feature Descriptions.):

JAHWxxxF1 Preferred Logic:

Logic Low—Module On

Logic High—Module Off

JAHWxxxF Optional Logic:

Logic Low—Module Off

Logic High—Module On

Logic Low:

At Ion/off = 1.0 mA

At Von/off = 0.0 V

Logic High:

At Ion/off = 0.0 µA

Leakage Current

Turn-on Time (See Figure 11.)

(IO = 80% of IO, max; VO within ±1% of steady state)

Von/off

Ion/off

Von/off

Ion/off

—

1.2

1.0

µA

Output Voltage Adjustment (See Feature Descriptions.):

Output Voltage Remote-sense Range

Output Voltage Set-point Adjustment Range (trim) —

——

60 —

—0.5

110 V

%VO, nom

Output Overvoltage Protection VO, sd 4.0* —5.0* V

Overtemperature Protection

(See Feature Descriptions.) TC—110 —°C

Data Sheet

November 20 00

Tyco Electroni cs Corp. 5

36 Vdc to 75 Vdc Input, 3.3 Vdc Output; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Characteristic Curves

The following figures provide typical characteristics for the power modules. The figures are identical for both on/off

configurations.

8-2244 (F)

Figure 1. Typical JAHW050F-S Input

Characteristics at Room Temperature

8-2291 (F)

Figure 2. Typical JAHW075F-S Input

Characteristics at Room Temperature

8-2245 (F)

Figure 3. T ypical JAHW050F-S Converter Efficiency

vs. Output Current at Room Temperature

8-2311 (F)

Figure 4. T ypical JAHW075F-S Converter Efficiency

vs. Output Current at Room Temperature

1.3

INPUT VO LT AG E, V I (V)

INPUT CURRENT, II (A)

10 20 30 40 50 60 70 75

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0.0 5 152535455565

IO = 10 A

IO = 5 A

IO = 0.5 A

2.0

10 INPUT VOLTAGE, VI (V)

INPUT CURRENT, II (A)

20 30 40 5015 25 35 4550

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0 55 60 65 70 75

IO = 15 A

IO = 7.5 A

IO = 0.75 A

2OUTPUT CURRENT, IO (A)

EFFICIENCY, η (%)

468103579

VI = 36 V

VI = 48 V

VI = 75 V

2OUTPUT CURRENT, IO (A)

EFFICIENCY, η (%)

46810357911 12 13 14 15

VI = 75 V

VI = 48 V

VI = 36 V

6Tyco Electronics Corp.

Data Sheet

November 200036 Vdc to 75 Vdc Input, 3.3 Vdc O utput; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Characteristic Curves (continued )

8-2293 (F)

Note: See Figure 13 for test conditions.

Figure 5. Typical JAHW050F-S Output Ripple

Voltage at Room Temperature, IO = IO, max

8-2486 (F)

Note: See Figure 13 for test conditions.

Figure 6. Typical JAHW075F-S Output Ripple

Voltage at Room Temperature, IO = IO, max

8-2378 (F)

Note: Tested with a 10 µF tantalum and a 1.0 µF ceramic capacitor

across the load.

Figure 7. Typical JAHW050F-S Transient Response

to Step Decrease in Load from 50% to

25% of IO, max at Room Temperature and

48 Vdc Input (Waveform Averaged to

Eliminate Ripple Component.)

8-2294 (F)

Note: Tested with a 10 µF tantalum and a 1.0 µF ceramic capacitor

across the load.

Figure 8. Typical JAHW075F-S Transient Response

to Step Decrease in Load from 50% to

25% of IO, max at Room Temperature and

48 Vdc Input (Waveform Averaged to

Eliminate Ripple Component.)

OUTPU T VOLTAGE, VO (V)

(20 mV/div)

TIME, t (1 µs/div)

VI = 36 V

VI = 48 V

VI = 75 V

OUTPUT VO LT AG E, VO (V)

(50 mV/div)

TIME, t (2 µs/div)

VI = 36 V

VI = 48 V

VI = 75 V

OUTPUT VOLTAGE, VO (V)

(100 mV/div)

TIME, t (50 µs/div)

OUTPUT CURRENT, IO (A)

(1 A/div )

2.5 A

OUTPUT VOLTAGE, V

(V)

(100 mV/div)

TIME, t (100

s/div)

OUTPUT CURRENT, I

(A)

(1 A/div)

3.75 A

Data Sheet

November 20 00

Tyco Electroni cs Corp. 7

36 Vdc to 75 Vdc Input, 3.3 Vdc Output; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Characteristic Curves (continued )

8-2379 (F)

Note: Tested with a 10 µF tantalum and a 1.0 µF ceramic capacitor

across the load.

Figure 9. Typical JAHW050F-S 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.)

8-2295 (F)

Note: Tested with a 10 µF tantalum and a 1.0 µF ceramic capacitor

across the load.

Figure 10. Typical JAHW075F-S Transient

Response to Step Increase in Load from

50% to 75% of IO, max at Room

Temperature and 48 Vdc Input.

(Wav eform Averaged to Eliminate

Ripple Component.)

8-2296 (F)

Note: Tested with a 10 µF tantalum and a 1.0 µF ceramic capacitor

across the load.

Figure 11. Typical Start-Up from Remote On/Off;

IO = IO, max

OUTPUT VOLTAGE , V

(V)

(10 mV/div)

TIME, t (50

s/div)

OUTPUT CURRENT, I

(A)

(1 A/div)

5 A

OUTPUT VOLTAGE, VO (V)

(100 mV/div)

TIME, t (100

s/div)

OUTPUT CURRENT, I

(A)

(1 A/div)

REM OTE ON/OF F,

VON/OFF (V)

TIME, t (5 ms/d iv)

OUTP UT VOLT AG E, VO (V)

(1 V/div)

88 Tyco Electronics Corp.

Data Sheet

November 200036 Vdc to 75 Vdc Input, 3.3 Vdc Output; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Test Configurations

8-203 (F).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 12. Input Reflected-Ripple Test Setup

8-513 (F).d

Note: Use a 1.0 µF ceramic capacitor and a 10 µF aluminum or tan-

talum capacitor. 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 13. P eak-to-Peak Output Noise

Measurement Test Setup

8-749 (F)

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 sock et contact resistance.

Figure 14. Output Voltage and Efficiency

Measurement Test Setup

Design Considerations

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. For the test configuration in Figure 12, 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. F or other highly inductiv e source

impedances, consult the factory for further application

guidelines.

Safety Considerations

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

requir eme nts of the end-u se sa fety agency stan dard,

i.e.,

1950,

CSA

C22.2 No. 950-95, and

VDE

0805

(EN60950, IEC950).

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 other hazardous voltages, includ-

ing 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 pins and ground.

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

when all inputs are ELV.

TO OSCILLOSC OPE

CURRENT

PROBE

BATTERY

TEST

220

ESR < 0.1

Ω

@ 20

C, 100 kHz 33

ESR < 0.7

Ω

@ 100 kH z

(+)

(–)

1.0 µFRESISTIVE

SCOPE

COPPER ST R I P

10 µFLOAD

VO(+)

VO(–)

VI(+)

IIIO

SUPPLY

CONTACT

CONTACT AND

LOAD

SENSE(+)

VI(–)

VO(+)

VO(–)

SENSE(–)

RESISTANCE

DISTRIBUTION LOSS ES

ηVO(+) –VO(–)

[]

VI(+) –VI(–)

[]

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





x100=%

Tyco Electroni cs Corp. 9

Data Sheet

November 20 00 36 Vdc to 75 Vdc Input, 3.3 Vdc Output; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Safety Considerations (continued)

For input voltages exceeding –60 Vdc but ≤ –75 Vdc,

these converters hav e been ev aluated to the applicable

requirements of BASIC INSULATION between second-

ary DC MAINS DISTRIBUTION input (classified as

TNV-2 in Europe) and unearthed SELV outputs (-SB

version only).

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

mum 6 A normal-blow fuse in the ungrounded lead of

the JAHW050F-S and JAHW075F-S.

Feature Descriptions

Overcurrent Protection

To provide protection in an output overload condition,

the unit is equipped with an internal shutdown and

auto-restart mechanism. At the instance of current-limit

inception, the module enters a hiccup mode of opera-

tion whereby it shuts down and automatically attempts

to restart. As long as the fault persists, the module

remains in this mode.

The protection mechanism is such that the unit can

continue in this condition until the fault is cleared.

Remote On/Off

Two remote on/off options are av ailable. Positive logic

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

voltage on the ON/OFF pin, and off during a logic low.

Negative logic remote on/off turns the module off dur-

ing a logic high and on during a logic low. Negative

logic, devi ce code suffix “1,” is the factory-preferred

configuration.

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 can be an open collector or equivalent (see

Figure 15). A logic low is Von/off = 0 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 cu rren t of the switch at Von/off = 15 V is 50 µA.

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

following to turn the unit on:

■For n eg ati ve logi c, sho rt ON/OFF pi n t o VI(–).

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

8-720 (F).c

Figure 15. Remote On/Off Implementation

Output Voltage S et-Point Adjustment

(Trim)

Output v oltage trim allows the user to increa se or

decrease the outp ut v olt age set point of a mo dule . This i s

accomplished b y connecting an e xternal resistor between

the TRIM pin and eit her the SENSE( +) or SENSE(–) pi ns.

The trim resistor should be positio ned close to the mod-

ule.

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

With an e xternal resistor betw een the TRIM and

SENSE(–) pins (Radj-down), the ou tput voltage set point

(VO, adj) decreases (s e e Figure 16). The following equa-

tion determines the required external-re sistor v alue to

obtain a percen tage output voltage change of ∆%.

With an external resistor connected between the TRIM

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

point (VO, adj) increases (see Figure 17).

The following equation determines the required exter-

nal-resistor value to obtain a percentage output voltage

change of ∆%.

SENSE(+)

VO(+)

SENSE(–)

VO(–)

VI(–)

–

Ion/off ON/OFF

VI(+)

LOAD

Von/off

Radj-down 1000

∆%

-------------11–





kΩ

Radj-up VO nom

()

1∆%

100

--------

()

1.225

–

1.225∆%

--------------------------------------------------------------------------1000 11

–







kΩ

1010 Tyco Electronics Corp.

Data Sheet

November 200036 Vdc to 75 Vdc Input, 3.3 Vdc Output; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Feature Descriptions (continued)

Output Voltage Set-Point Adjustment

(Trim) (continued)

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

must not exceed the minimum output overvoltage shut-

down value indicated 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 18).

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 the factory 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 v oltage 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.

8-748 (F).b

Figure 16. Circuit Configuration to Decrease

Output Voltage

8-715 (F).b

Figure 17. Circuit Configuration to Increase

Output Voltage

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, i.e.:

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

The voltage between the VO(+) and VO(–) term inal s

must not exceed the minimum output overvoltage shut-

down value indicated 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 18).

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 the factory if you

need to increase the output voltage more than the

above limitati on.

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 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.

(+)

VI(–)

ON/OFF

CASE

VO(+)

VO(–)

SENSE(+)

TRIM

SENSE(–)Radj-down RLOAD

(+)

VI(–)

ON/OFF

CASE

VO(+)

VO(–)

SENSE(+)

TRIM

SENSE(–)

Radj-up RLOAD

Tyco Electroni cs Corp. 11

Data Sheet

November 20 00 36 Vdc to 75 Vdc Input, 3.3 Vdc Output; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Feature Descriptions (continued)

Remote Sense (continued)

8-651 (F).m

Figure 18. Effective Circuit Configuration for

Single-Module Remote-Sense Operation

Output Overvoltage Protection

To provide protection in an output overvoltage condi-

tion, the unit is equipped with circuitry that moonitors

the voltage on the output terminals. If the voltage on

the output terminals exceed the overvoltage protection

threshold, the module enters a hiccup mode of opera-

tion whereby it shuts down and automatically attempts

to restart. As long as the fault persists, the module

remains in this mode.

The protection mechanism is such that the unit can

continue in this condition until the fault is cleared.

Overtemperature Protection

To provide protection in a overtemperature condition,

the unit is equipped with an overtemperature circuit. In

the event of such a fault, the module enters into a hic-

cup mode of operation whereby it shuts down and

automatically attempts to restart. As long as the fault

persists, the module remains in this mde.

The protection mechanism is such that the unit can

continue in this condition until the fault is cleared.

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 is removed by convection, and radiation to the

surrounding environment.

The thermal data presented is based on measure-

ments taken in a wind tunnel. Note that the orientation

of the module with respect to airflow affects thermal

performance.

Two orientations are shown in Figure s 2 0 and 21.

8-1199 (F).f

Note: Dimensions are in millimeters and (inches).

Figure 19. Thermal Test Setup

8-3019 (F)

Figure 20. Best Orientation (Top View)

SENSE(+)

SENSE(–)

VI(+)

VI(–)

IOLOAD

CONTACT AND

SUPPLY II

CONTACT

VO(+)

VO(–)

DISTRIBUTION LOSS ESRESISTANCE

203.2 (8.0) AIRFLOW

25.4 (1.0) POWER MODULE

76.2 (3.0)

AIR VELOCITY

AND AMBIENT

TEMPERATURE

MEASURED HERE

AIRFLOW

1212 Tyco Electronics Corp.

Data Sheet

November 200036 Vdc to 75 Vdc Input, 3.3 Vdc Output; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Thermal Considerations (continued )

Introduction (continued)

8-3020 (F)

Figure 21. Worst Orientation (Top View)

Proper cooling can be verified by measuring the tem-

perature. Peak temperature (TC) occurs at the position

indicated in Figure 22.

8-3021 (F)

Figure 22. Temperature Measurement Location

(Bottom View)

The temperature at this location should not ex ceed

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 temperature of the power mod-

ules is 100 °C , you can limit this temperature to a lower

value for extremely high reliability.

Heat Transfer

Increasing airflow over the module enhances the heat

transfer via convection. Figures 23 and 25 show the

maximum power that can be dissipated by the

JAHW050F-S module without exceeding the maximum

temperature versus local ambient temperature (TA) f or

natural convection through 3 m/s (600 ft./min.) for the

best and worst orientation, respectively. Figures 24 and

26 show the maximum power that can be dissipated by

the JAHW075F-S without exceeding the maximum

temperature versus local ambient temperature (TA) f or

natural convection through 3 m/s (600 ft./min.) for best

and worst orientation, respectively.

Note that the natural convection condition was mea-

sured at 0.05 m/s to 0.1 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 0.3 m/s (60 ft./min.) due to other heat dissipat-

ing components in the system. The use of Figures 23

and 25 is shown in the following example.

Example

What is the minimum airflow necessary for a

JAHW050F-S operating at VI = 75 V, an output current

of 10 A, and a maximum ambient temperature of

55 °C?

Solution

Given: VI = 75 V

IO = 10 A

TA = 55 °C

Determine PD (Use Figure 27.):

PD = 6 W

Determine airflow (v) (Use Figures 23 and 25.):

v = nat. conv. (Best orientation)

v = 0.5 m/s (100 ft./min.) (Worst orientation)

AIRFLOW

THERMOCOUPLE

TO THE TOP

OPTOCOUPLER

IS ATTACHED

CENTER OF THE

HERE

Tyco Electroni cs Corp. 13

Data Sheet

November 20 00 36 Vdc to 75 Vdc Input, 3.3 Vdc Output; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Thermal Considerations (continued)

Heat Transfer (continued)

8-3022 (F)

Figure 23. JAHW050F-S Forced Convection Power

Derating; Best Orientation

1-0012

Figure 24. JAHW075F-S Forced Convection Power

Derating; Best Orientation

8-3023 (F)

Figure 25. JAHW050F-S Forced Convection Power

Derating; Worst Orientation

1-0013

Figure 26. JAHW075F-S Forced Convection Power

Derating; Worst Orientation

LOCAL AMBIENT TEMP ER ATUR E, TA (°C)

POWER D I SSI PA T IO N, PD (W)

010 20 30 40 50 60 70 80 90 100

0.1 m/s (20 ft./min)

1.0 m/s (200 ft./min)

2.0 m/s (400 ft./min)

3.0 m/s (600 ft./min)

(NAT. CONV)

POWER DISSIPATION, PD (W)

20100 30405060708090100

LOCAL AMBIENT TEMPERATURE, TA (˚C)

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

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

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

0.1 m/s (20 ft./min.)

(NAT. CONV)

LOCAL AMBIENT TEMP ER ATUR E, TA (°C)

POWER DISSIPATION, PD (W)

010 20 30 40 50 60 70 80 90 100

0.1 m/s (20 ft./min)

1.0 m/s (200 ft./min)

2.0 m/s (400 ft./min)

3.0 m/s (600 ft./min)

(NAT. CONV)

020100 30405060708090100

POWER DISSIPATION, PD (W)

LOCAL AMBIENT TEMPERATURE, TA (˚C)

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

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

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

0.1 m/s (20 ft./min.)

(NAT. CONV)

1414 Tyco Electronics Corp.

Data Sheet

November 200036 Vdc to 75 Vdc Input, 3.3 Vdc Output; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Thermal Considerations (continued )

Heat Transfer (continued)

8-3274 (F)

Figure 27. JAHW050F-S Power Dissipation vs.

Output Current at 25 °C

8-3275 (F)

Figure 28. JAHW075F-S Power Dissipation vs.

Output Current at 25 °C

Surface-Mount Power Module Solder

Reflow Recommendation

The JAHW- S er i es surface-mount power module s are

constructed with SMT (surface-mount technology)

components and assembly guidelines. Such large

mass/low thermal resistance devices heat up slower

than typical SMT components. It is recommended that

the customer revie w data sheets in order to customize

the solder reflow profile for application board assembly.

It is recommended that a reflow profile be character-

ized for the module on the application board assembly.

The solder paste type, component, and board thermal

sensitivity must be considered in order to form the

desired fused solder fillet. The power module balls are

plated with tin/lead (Sn/Pb) solder to prevent corrosion

and ensure good solderability. Typically, the eutectic

solder melts at 183 °C, wets the land, and subse-

quently wicks the device connection. Suffi ci ent time

must be allocated to fuse the plating on the connection

and ensure a reliable solder joint.

There are several types of SMT reflow technologies

currently used in the indus try. These surface-mount

power modules can be adequately soldered using nat-

ural convection, IR (radiant infrared), convection/IR, or

forced convection technologies. The surface-mount

power module solder reflow profile is established by

accurately measuring the module balls temperature.

The maximum oven temperature and convey or speed

should prevent the customer board and surface-mount

module temperature from e xceeding the maximum

thermal profile limits as shown in Figure 30. The ther-

mocouple should be attached to the smallest pad, not

connected to a heavy path for current conduction. The

customer board temperature during a typical reflow

profile is shown in Figure 31. Failure to observ e these

maximum module temperatures and duration may

result in permanent damage to the pow er module. The

maximum temperature of the power module tantalum

capacitors should not exceed 220 °C. The minimum

temperature of the power module balls should be

210 °C.

0OUTPUT CURRENT, IO (A)

POWER DISSIPATION, PD (W)

12345678

0910

VI = 75 V

VI = 48 V

VI = 36 V

0OUTPUT CURRENT, IO (A)

POWER DISSIPATION, PD (W)

12345678

0910

12 13 14 1511

VI = 75 V

VI = 48 V

VI = 36 V

Tyco Electroni cs Corp. 15

Data Sheet

November 20 00 36 Vdc to 75 Vdc Input, 3.3 Vdc Output; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Surface-Mount Power Module Solder Reflow Recommendation (continued)

Ball grid packaging provides robust surface-mount connections

Figure 29. Cross Section of Solder Connection

8-2275 (F).a

Figure 30. Maximum Thermal Profile Limits

Good Solder Joints

TEST BOARD

BALL GRID ARRAY

JAHW MODULE

Robust Connections

CUSTOMER BOARD

TEMPERATURE (°C)

230 °C MAX

183 °C

150 °C

120 °C60 MINUTES MAX

4 s—80 s

4 °C/s MAX

TIME (s)

16 Tyco Electronics Corp.

Data Sheet

November 200036 Vdc to 75 Vdc Input, 3.3 Vdc O utput; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Surface-Mount Power Module Solder Reflow Recommendation (continued)

8-2274 (F).b

Figure 31. Typical Reflow Soldering Profile

Placement Recommendation

Use of vacuum-disk grippers is not recommended for placing the JAHW-S modules on application PCBs. Vacuum-

activated mechanical grippers or, alternatively, hand placement is recommended.

EMC Considerations

For assistance with designing for EMC compliance, please refer to the FLTR100V10 data sheet (DS99-294EPS).

Layout Considerations

Copper paths must not be routed beneath the power module mounting inserts. For additional layout guidelines,

refer to the FLTR100V10 data sheet (DS99-294EPS).

TIME (M IN.)

CUSTOMER BOARD

250

7:30 10:00

200

150

100

5:002:30

TEMPERATURE (°C)

MELTING POINT

(60/40 SOLDER)

Tyco Electroni cs Corp. 17

Data Sheet

November 20 00 36 Vdc to 75 Vdc Input, 3.3 Vdc Output; 50 W to 75 W

JAHW050F-S and JAHW075F-S 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

8-3024 (F).c

35.56

(1.400)

25.40

(1.000) 10.16

(0.400)

25.40

(1.000)

17.78

(0.700)

10.16

(0.400)

48.26 TYPICAL

(1.900)

35.56

(1.400)

MODULE OUTLINE

I(+)

ON/OFF

I(–)

O(+)

+SEN

–SEN

O(–)

TRIM

54.36 (2.14)

57.4

10.92 (0.43) 3.05 (0.120) 3.05 (0.120)

(2.26)

10.16

(0.40) MAX

35.56

(1.400)

25.40

(1.000) 10.16

(0.400)

25.40

(1.000)

17.78

(0.700)

10.16

(0.400)

48.26

(1.900)

35.56 TY PI C A L

(1.400)

MODULE OUTLINE

I(–)

ON/OFF

I(+)

O(–)

–SEN

+SEN

O(+)

TRIM

3.18 ( 0.1 25 ) T Y PI CA L

DIA BALL CONNECTOR

18 Tyco Electronics Corp.

Data Sheet

November 200036 Vdc to 75 Vdc Input, 3.3 Vdc O utput; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Recommended Hole Pattern

Component-side footprint.

Dimensions are in millimeters and (inches).

8-2989 (F)

Ordering Information

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

Table 4. Device Codes

Optional features can be ordered using the device code suffixes shown below.

Table 5. Device Options

Input

Voltage Output

Power Output

Current Remote On/Off

Logic Device

Code Comcode

48 Vdc 3.3 Vdc 33 W 10 A Negative JAHW050F1-S 108625344

48 Vdc 3.3 Vdc 49.5 W 15 A Negative JAHW075F1-S 108855735

48 Vdc 3.3 Vdc 33 W 10 A Positive JAHW050F-S TBD

48 Vdc 3.3 Vdc 49.5 W 15 A Positive JAHW075F-S TBD

Option Device Code Suffix

Approved for Basic Insulation -SB

35.56

(1.400)

25.40

(1.000) 10.16

(0.400)

25.40

(1.000)

17.78

(0.700)

10.16

(0.400)

48.26

(1.900)

35.56

(1.400)

2.54

FOOTPRINT

PERIPHERY

VI(+)

ON/OFF

VI(–)

VO(+)

+SEN

–SEN

VO(–)

TRIM

(0.100) DIA. PAD

Tyco Electroni cs Corp. 19

Data Sheet

November 20 00 36 Vdc to 75 Vdc Input, 3.3 Vdc Output; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Notes

Data Sheet

February 12, 200136 Vdc to 75 Vdc Input, 3.3 Vdc Output; 50 W to 75 W

JAHW050F-S and JAHW075F-S Power Modules; dc-dc Converters:

Tyco Electronics Power Systems, Inc.

3000 Skyline Drive, Mesquite, TX 75149, USA

+1-800-526-7819 FA X : +1-888-31 5-5182

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

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.

November 2000

DS00-244EPS (Replaces DS00-040EP S) Printed on

Recycled Paper