12S15.4XW [ETC]

Analog IC ; 模拟IC\n


型号：	12S15.4XW
厂家：	ETC
描述：	Analog IC 模拟IC\n 模拟IC
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50 to 60 XW Single Series DC/DC Converters

Description

Features

These single output converters are designed for wide input

range low noise telecommunications, industrial, and

instrument applications. The wide input range (2:1) is ideal for

battery or unregulated input applications while the low noise

complements even the most sensitive analog circuitry.

Lowest Noise Outputs, 50 mV P-P

Maximum

Fully Shielded/Filtered Design

Very Low and Specified Reflected Ripple Current

These converters are state-of-the art 220 kHz MOSFET

based designs that provide outstanding line and load

regulation with efficiencies exceeding 85%.

Low and Specified Input/Output Capacitance

Isolation Voltage Raised to 700 or 1544 VDC as Per

the Requirements of UL1459

Thesingleoutputsareregulatedbyahighloopgaincurrent

mode control method that provides linear regulator type

performance with a true, high efficiency switching DC/DC

topology. The large amount of loop gain also insures excellent

input ripple rejection and line transient response. Remote

output voltage sense, output voltage trim and ON/OFF

functions are also included.

Five Year Warranty

Selection Chart

Input Range

VDC

Output

VDC

Output

AMPS

Model

They are protected from output shorts to common by a high

speed pulse-by-pulse digital current limit circuit and a

self-resetting thermal overload protection circuit. The input

and output are overvoltage protected with 1500W transient

suppressor diodes for zero failure rate operation.

Min

9.0

Max

12S5.10XW*

12S12.5XW*

12S15.4XW*

24S5.10XW

24S12.5XW

24S15.4XW

48S5.10XW

48S12.5XW

48S15.4XW

18.0

36.0

72.0

9.0

18.0

36.0

As with all CALEX converters the 50/60 Watt XW Single

Series is covered by our standard 5 Year Warranty.

* Note the input range on the 12S models is as follows:

Above 75% full load: 9.5 VDC to 18 VDC

Below 75% full load: 9.0 VDC to 18 VDC

60 Watt Single Series Block Diagram

Manufacturing Company, Inc. • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com

50 to 60 XW Single Series DC/DC Converters

Input Parameters*

Model

12S5.10XW

12S12.5XW

12S15.4XW

Units

MIN

MAX

MIN

MAX

TYP

9.5

18.0

9.0

18.0

6320

Voltage Range

75% to 100% Full Load

VDC

Below 75% Full Load

Input Current Full Load

No Load

5430

6080

Efficiency

TYP

MAX

150

mA P-P

Reflected Ripple (2)

TYP

MAX

TYP

220

mA RMS

kHz

Switching Frequency

Maximum Input Overvoltage, 100ms

Turn-on Time, 1% Output Error

Recommended Fuse

VDC

(3)

AMPS

Units

Model

24S5.10XW 24S12.5XW 24S15.4XW 48S5.10XW 48S12.5XW 48S15.4XW

MIN

MAX

TYP

18.0

36.0

3060

36.0

72.0

1520

Voltage Range

VDC

Input Current Full Load

No Load

Efficiency

2660

2980

1340

1490

TYP

MAX

mA P-P

Reflected Ripple (2)

TYP

MAX

TYP

0.5

mA RMS

kHz

Switching Frequency

220

Maximum Input Overvoltage, 100ms

Turn-on Time, 1% Output Error

Recommended Fuse

VDC

(3)

AMPS

Output Parameters*

12S5.10XW 24S5.10XW 12S12.5XW 24S12.5XW 12S15.4XW 24S15.4XW

Model

Units

48S5.10XW

48S12.5XW

48S15.4XW

Output Voltage

VDC

MIN

TYP

MAX

4.950

5.000

5.050

11.900

12.000

12.100

14.900

15.000

15.100

Output Voltage Accuracy (14)

VDC

MIN

MAX

TYP

MAX

TYP

MAX

TYP

2.5

0.1

0.3

1.25

0.05

0.1

0.01

0.1

<0.02

<0.2

300

1.0

0.05

0.1

Rated Load Range (5)

Load Regulation: 25%-100% Full Load

Line Regulation

Vin = Min-Max VDC

Short Term Stability (6)

Long Term Stability

<0.05

<0.02

%/24Hrs

%/kHrs

µs

Transient Response (7)

Dynamic Response (8)

Input Ripple Rejection (9)

200

125

200

mV peak

>70

TYP

MAX

TYP

1.2

Noise, 0-20MHz bw (2)

mV P-P

RMS Noise, 0.1 - 1MHz bw (2)

1.5

mV RMS

1.2

TYP

MAX

150

Temperature Coefficient

ppm/°C

Overvoltage Clamp (10)

TYP

6.8

VDC

Short Circuit Protection to

Common for all Outputs

Continuous Current Limit and Thermal Protection

NOTES

AllparametersmeasuredatTc=25°C, nominalinputvoltage

and full rated load unless otherwise noted. Refer to the

CALEX Application Notes for the definition of terms,

measurement circuits and other information.

(2) NoiseismeasuredperCALEXApplicationNotes. Measurement

bandwidth is 0-20 MHz for peak-peak measurements, 10 kHz to

1 MHz for RMS measurements.

Manufacturing Company, Inc. • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com

50 to 60 XW Single Series DC/DC Converters

General Specifications *

All Models

Units

ON/OFF Function

ON Logic Level

VDC

MIN

> 10

< 5

or Leave Pin Open

OFF Logic Level

or Tie Pin to -Input

MAX

Open Circuit Voltage

Input Resistance

TYP

VDC

kohms

Converter Idle Current

ON/OFF Pin Low

12S Models

24S Models

48S Models

TYP

Isolation (4)

Isolation Voltage

Input to Output 12S, 24S MIN

700

1544

100

Input to Output 48S

Case to Input

MIN

VDC

10uA Leakage

Input to Output

Capacitance

TYP

350

BOTTOM VIEW

SIDE VIEW

Output Trim Function (13)

Trim Range

Mechanical tolerances unless otherwise noted:

X.XX dimensions: ±0.020 inches

MIN

TYP

±5

Input Resistance

Open Circuit Voltage

Environmental

kohms

VDC

X.XXX dimensions: ±0.005 inches

1.2

Seal around terminals is not hermetic. Do not immerse units in any

liquid.

Case Operating Range

No Derating

MIN

MAX

MIN

MAX

MIN

-40

100

-55

105

°C

Case Functional Range (11)

Storage Range

Function

+INPUT

-INPUT

MAX

Thermal Shutdown

Case Temperature

Thermal Impedance (12)

Unit Weight

+SENSE

TRIM

TYP

105

TYP

3.4

°C/Watt

-SENSE

+OUTPUT

-OUTPUT

ON/OFF

10.5

Mounting Options

MS13

Chassis Mounting Kit

Inserts In Case

-I Suffix on Part Number

-HS (-I Required)

Heat Sink Option

_{a modulation amplitude of 1}A_{% of Vin.}

(3) Determine the correct fuse size by calculating the maximum DC

current drain at low line input, maximum load and then adding 50

to 100 percent to get the desired fuse size. Slow blowing fuse

recommended.

(10) 1500W peak pulse power transient voltage protectors used, also

see note 3.

(11) Thefunctionaltemperaturerangeisintendedtogiveanadditional

data point for use in evaluating this power supply. At the low

functional temperature the power supply will function with no

side effects, however sustained operation at the high functional

temperature may reduce the expected operational life. The data

sheet specifications are not guaranteed over the functional

temperature range.

(4) The Case is tied to the -Input pin through 1.5 Megohm in parallel

with 0.01µF.

(5) Minimum load required for specified performance only. Module

may be run at less than minimum load with no damage.

Maximum power from module is limited to either 50 or 60 Watts.

Trimmingtheoutputupreducestheoutputcurrentproportionally

to keep the maximum power constant. Output current is not

increased over the listed maximum when trimming the output

voltage down.

(12) Thecasethermalimpedanceisspecifiedasthecasetemperature

rise over ambient per package watt dissipated. The -HS option

can reduce the thermal impedance of the XW single to below 2.4

°C per Watt. See the applications section.

(6) Short term stability is specified after a 30 minute warmup at full

load, constant line and recording the drift over a 24 hour period.

(13) Full output trim range may not be available at full load and

minimum input voltage. Full trim is guaranteed from minimum

input voltage +5% and full load. Also see note 5.

(7) The transient response is specified as the time required to settle

from a 50 to 75 % step load change (rise time of step = 2 µSec)

to a 50mV error band.

(14) The remote sense pins must be connected to their respective

outputs for proper output accuracy and regulation. The remote

sense lines can correct for 0.4V maximum drop on each line.

(8) Dynamic response is the peak overshoot during a transient as

defined in note 6 above.

(9) The input ripple rejection is specified for DC to 120 Hz ripple with

Manufacturing Company, Inc. • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com

50 to 60 XW Single Series DC/DC Converters

Application Information

You truly get what you pay for in a CALEX converter; a

complete system oriented and specified DC/DC converter -

no surprises, no external noise filtering circuits needed, no

external transient suppression necessary and no heatsinking

problems.

The50/60WattXWSingleseries,likeallCALEXconverters,

carries the full 5 Year CALEX Warranty. We can offer a five

year warranty where others can’t because with CALEX it’s

rarely needed.

General Information

Figure 1.

The220kHzoperatingfrequencyofthe50/60WattXWSingle

Series allows an increased power density of up to 6 Watts per

cubic inch while still including adequate heat sinking and full

dual stage filtering on both the input and output. This prevents

the need for additional filtering and heatsinking in most

applications.

Standard connections for the 50/60 Watt Single Series. The ON/

OFF and TRIM pins can be left floating if they are not used. The input

fuse should not be omitted. The remote sense lines should be

connected to their respective output pins even if they are not used

in your application

The series is also useful for battery operation in industrial,

medical control and remote data collection applications. The

remote ON/OFF pin places the converter in a very low power

mode that draws typically less than 7mA (2mA for 12S

models) from the input source.

is required for normal operation. In fact, it can degrade the

converters performance. See our application note

“Understanding DC/DC Converters Output Impedance” for

more information. The usual 0.1 to 0.01 µF bypasses may be

used around your PCB as required for local bypassing without

harm.

Noise has also been greatly reduced in this single design.

The industry standard specifies output noise at 75 mV peak-

to- peak typical with no mention of maximum value or of

measurement bandwidth. Our converters achieve 15 mV

peak-to-peak typical and are fully specified and tested to a

maximum specification of 50 mV peak-to-peak over a wide

bandwidth of 0-20 MHz.

Extremely low ESR capacitors (< 0.5 ohms) should not be

used at the input. This will cause peaking of the input filters

transfer function and actually degrade the filters

performance.

Output

Dual stage input filtering reduces reflected ripple noise and

is also fully specified for typical and maximum values (exact

value depends on input voltage range). Typical RMS noise

overa10kHzto1MHzbandwidthisalsospecifiedforboththe

input and output.

The trim pin may be used to adjust the outputs by up to ±5 %

from the nominal factory setting. The trim may be used to

adjust for system wiring voltage drops or to adjust the +5

output up to 5.2 Volts for ECL applications. Figure 2 shows the

proper connections for using the trim pin. If output trimming is

not desired the trim pin may be safely left floating.

All inputs and outputs are protected from transient

overvoltage conditions by 1500 watt transient overvoltage

suppressors. Full overload protection is provided by

independent pulse-by-pulse current limiting and an over-

temperature shutdown circuit. These protection features

assure you that our 50/60 Watt Single will provide you with

zero failure rate operation.

Maximumpowerislimitedtoeither50or60watts.Trimming

the output up reduces the output current proportionally to

keep the maximum power constant. Output current is not

increased over the listed maximum when trimming the output

voltage down.

Six sided shielding is standard along with specified operation

over the full industrial temperature range of -40 to +85°C.

General Operation

Figure1showstherecommendedconnectionsforthe50Watt

Single DC/DC converter. A fuse is recommended to protect

the input circuit and should not be omitted. The fuse serves

two purposes:

1) It prevents unlimited current from flowing in the case of a

catastrophic system failure.

2) UL regulations for telecom equipment require the use of a

fuse.

Figure 2.

The 5 Volt output can be trimmed by either a trimpot or fixed

resistors. If fixed resistors are used their values may range from

zero to infinite ohms. The trimpot should be 10 K ohms nominal.

The ON/OFF and TRIM pins may be left floating if they are not

used. No external capacitance on either the input or outputs

Manufacturing Company, Inc. • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com

50 to 60 XW Single Series DC/DC Converters

Each single output features provisions for remote sense

connections. These allow the power supply to correct for line

drops of up to 0.4 volts per leg. The remote sense connections

should be made with twisted pair wire or closely coupled PCB

traces. If the remote sense is not to be used, these pins must

be connected to their respective output pins for proper output

voltageaccuracyandregulation. Thereisapproximately1mA

of current flowing in the remote sense lines.

Care should be taken not to disconnect the output pins

beforetheremotesensepinswhiletheconverterisinoperation.

If this happens the output load current will run down the sense

leads, possibly creating an output overvoltage condition that

could cause the internal transient suppressor on the output to

conduct. If the unit must be “Hot Plugged” in the intended

application, provisions should be made to disconnect the

sense leads before the power leads, disconnect the input

power first or use the remote ON/OFF to stop the converter’s

operation.

Figure 3.

The simplified schematic of the XW Single Series’ ON/OFF pin. The

maximum open circuit voltage is clamped by the 13 volt zener. By

leaving this pin floating the converter will be in the ON state. When

the pin is pulled below 5 volts the converter is placed in the power

down or OFF state. See our application note on the remote ON/OFF

function for more information.

Seeourapplicationnoteonremotesenseandtrimfunctions

for more information.

the ON/OFF pin is released the converter completely powers

up in typically 60 milliseconds. The ON/OFF pin turns the

converter off while keeping the input bulk capacitor fully

charged. This prevents the large inrush current spike that

occurs when the +input pin is opened and closed.

Grounding

The input and output sections are fully floating from each

other. They may be operated separately or with a common

ground. If the input and output sections are connected either

directly at the converter or at some remote location from the

converter it is suggested that a 3.3 to 10µF, 0.5 to 5 ohm ESR

capacitor bypass be used directly at the converter output pins.

Thiscapacitorpreventsanycommonmodeswitching currents

from showing up at the converter’s output as normal mode

output noise. Do not use the lowest ESR, biggest value

capacitor that you can find! This can only lead to reduced

system performance or oscillation. See our application note

“UnderstandingOutputImpedanceForOptimumDecoupling”

for more information.

Temperature Derating/Mounting Options

TheXWSingleseriescanoperateupto85°Ccasetemperature

withoutderating.Casetemperaturemayberoughlycalculated

fromambientbyknowingthattheXWSinglescasetemperature

rise is approximately 3.4° C per package watt dissipated.

For example: If the converter was outputting 40 watts, at what

ambient could it expect to run with no moving air and no extra

heatsinking?

Efficiency is approximately 85%. This leads to an input

powerof47watts. Thecasetemperaturerisewouldbe7watts

x 3.4 = 24°C. This number is subtracted from the maximum

case temperature of 85°C to get: 61°C.

Case Grounding

The case serves not only as a heat sink but also as an EMI

shield. Thecase/headershieldistiedtothe-Inputpinthrough

a 1.5 megohm resistor in parallel with a 0.01 µF capacitor.

Theseconnectionsareshownontheblockdiagram. Thecase

is floating from the output sections.

This is a rough approximation of the maximum ambient

temperature. Because of the difficulty of defining ambient

temperature and the possibility that the load’s dissipation may

actually increase the local ambient temperature significantly,

these calculations should be verified by actual measurement

before committing to a production design.

The noise performance of the converter may improve or

degrade with the case connected to other inputs or outputs

depending on your system grounding.

Heat Sink Option

Remote ON/OFF Pin Operation

The XW Single can be ordered in a “-I” configuration which

provides a case with 4 X M3 inserts located on the top surface

of the case for attaching a heat sink or mounting the converter

on its back. The mounting surface should be flat to within

±0.01 inches to prevent warping the XW Single’s case.

The remote ON/OFF pin may be left floating if this function is

not used. The equivalent input circuit for the ON/OFF pin is

shown in figure 3. The best way to drive this pin is with an open

collector/drain or relay contact. See our application note titled

“Understanding the Remote ON/OFF Function” for more

information on using the remote ON/OFF pin.

The CALEX -HS heat sink was specially developed for this

model and can reduce the case temperature rise to below

2.4°C per watt with natural convection and even less with

moving air. It also increases the heat removing efficiency of

any cooling air flow.

When the ON/OFF pin is pulled low with respect to the -

Input, the converter is placed in a low power drain state. When

Manufacturing Company, Inc. • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com

50 to 60 XW Single Series DC/DC Converters

When the -HS is ordered with XW Single, CALEX will ship

Chassis Mounting Kit - MS13

the converter and heatsink attached. One heat sink is needed

for each converter ordered.

The MS13 chassis mounting kit allows for direct wire

connectiontothe50/60WattSingleSeriespins.The mounting

kitincludestwobarrierstripsforwireattachment, aninputfuse

and an output trim pot for trimming the +5 Volt output. If the

MS13 is ordered at the same time as a 50/60 Watt Single

converter the mounting kit will be shipped with the correct fuse

size. The MS13 may be conveniently attached to a chassis

with the four 0.156 inch diameter mounting holes provided at

each corner.

Customer installed heat sinks may also be used. It is

recommendedthateitherliquidheatsinkcompoundornothing

be used on the heatsink interface. Stay away from the so

called “Dry” pad heat sink materials. In our experience these

materials are actually worse than using no compound at all.

Test them thoroughly before committing to production.

Additional heatsinking will lower internal temperatures and

increase the expected operational life.

Although the MS13 comes with solderless sockets for the

XW Single, it is recommended that it be soldered to the

mounting kit for improved reliability in severe environmental

or vibration environments.

Typical Performance (Tc=25°C, Vin=Nom VDC, Rated Load).

12 VOLT EFFICIENCY Vs. LOAD

24 VOLT EFFICIENCY Vs. LOAD

48 VOLT EFFICIENCY Vs. LOAD

LINE = 36VDC

LINE = 18VDC

LINE = 24VDC

LINE = 9VDC

LINE = 48VDC

LINE = 72VDC

LINE = 12VDC

LINE = 18VDC

LINE = 36VDC

100

LOAD (%)

12 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE

24 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE

48 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE

50% FULL LOAD

100% FULL LOAD

50% FULL LOAD

100% FULL LOAD

50% FULL LOAD

LINE INPUT(VOLTS)

12 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE

24 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE

48 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE

100% LOAD

50% LOAD

100% LOAD

50% LOAD

LINE INPUT (VOLTS)

Manufacturing Company, Inc. • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com

50 to 60 XW Single Series DC/DC Converters

Typical Performance (Tc=25°C, Vin=Nom VDC, Rated Load).

OUTPUT VOLTAGE Vs. OUTPUT LOAD

OUTPUT VOLTAGE Vs. CASE TEMPERATURE

OUTPUT IMPEDANCE Vs. FREQUENCY

120

100

CURRENT LIMIT MODE ->

"HICKUP" MODE ->

-0

-1

.01

100

120

140

-40

-20

100

1000

10000

100000

1000000

OUTPUT LOAD (%)

CASE TEMPERATURE (Deg C)

FREQUENCY (Hz)

DERATING

120

100

INFINITE HEAT SINK

NO HEAT SINK

SAFE OPERATING AREA

-40

-20

100

AMBIENT TEMPERATURE (Deg C)

Manufacturing Company, Inc. • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com

12S15.4XW [ETC]

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