25TMOW [GAPTEC]

25W - Single Output - Wide Input - Isolated & Regulated;


型号：	25TMOW
厂家：	GAPTEC
描述：	25W - Single Output - Wide Input - Isolated & Regulated
文件：	总6页 (文件大小：2906K)
中文：	中文翻译
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25TMOW_1.5 series

25W - Single Output - Wide Input - Isolated & Regulated

DC-DC Converter

25 Watt

Wide 2:1 input voltage range

High eﬃciency up to 88%

Short circuit protection (SCP)

Isolation voltage: 1.5kVDC

Over-current, over-voltage,

over-temperature protection

Input under-voltage lockout

RoHS compliant

Operating temperature range:

The 25TMOW_1.5 series are isolated 25W DC/DC converters with 2:1

input voltage. They feature eﬃciency up to 88%, 1500VDC isolation,

operating temperature of -40°C to +85°C, input under-voltage protec-

tion, output over-voltage, output over-current, output short circuit

protection and meets IEC60950-1.

-40°C to +85°C

Fixed switching frequency

Remote on/oﬀ negative logic

International standard pin-out

Monotonic startup into

pre-biased loads

Adjustable output voltage

range

IEC/UL/EN60950-1 approved

They are widely applied in optical networking equipment, wireless base

stations, microwave radio communications, telecom and data equip-

ment applications.

UL-60950-1 (E347551)

Common speciﬁcations

Short circuit protection:

Cooling:

Output speciﬁcations

Hiccup, continuous, self-recovery

Free air convection

-40°C~+85°C

Item

Test condition

Min

Typ

Max

5.05

Units

Voltage set point

25°C, Io=Io (max)

4.95

Operation temperature range:

Storage temperature range:

Storage humidity range:

Thermal stability time:

FIT:

Line regulation*

Vin(min to Vin(max)

Io= Io(max),

Vo=Vo(nom)

0.1

%Vo

-55°C~+125°C

90% MAX

Load regulation*

Voltage precision

Vin=Vin(nom)

0.125

30mins

Io=0 to Io (max)

312.5; 10⁹/MTBF

At 50% load

%Vo

Vibration:

IEC60068-2-6: 10~500Hz sweep, 0.75mm

excursion, 10g acceleration, 10minutes

in each 3 perpendicular directions

Voltage adjust-

ment range

-20

Remote sense

Vsense = Vout - Vload,

sense connected at load

%Vo

Shock:

Safety:

IEC 60068-2-27:200g acceleration, dura-

tion 3ms, 6 drops in each 3 perpendicu-

lar directions

Current Limit

5.5

7.5

Compliant to IEC60950-1, UL60950-1,

EN60950-1 and GB4943

External load

capacitance

Full resistive load,

low ESR

2200 µF

Switching frequency:

Transportation:

450KHz TYP, ﬁxed frequency

ETS300019-1-2

Temperature

coeﬃcient

At all outputs

200

ppm/°C

Dynamic response 25%-50%-25%,50%-

recovery time 75%-50% Io(nom)

100

µS

MTBF

3,200,000 hours

(Telcordia SR332, ground ﬁxed, 40°C):

Dynamic response 50%-75%-50%,di/

dt=2.5A/µS

Weight:

6.5g

• Recovery time

• Overshoot

µs

150

Protection speciﬁcations

Ripple and noise**

mVp-p

Item

Test condition

Min

Typ

Max

Units

Turn-on delay time Time from instant at

which Vin=Vin (Turn-

Input under voltage

lockout

• Turn-on

• Turn-oﬀ

• Hysteresis

on) until Vo=10% of

Vo (nom)

Short circuit current

Hiccup

0.3

yes

Turn-on rise time

Time for Vo to rise

from 10% of Vo (nom)

to 90% of Vo (nom)

Over current

protection

Hiccup mode,

automatic recovery

Over voltage

protection

Under the converter’s

maximum allowable

output power. Hiccup

mode, minimum

7.2

Regulation speciﬁcations describe the deviation as the input line voltage or output

load current is varied from a nominal midpoint value to either extreme (50% load).

** Output noise may be further reduced by installing an external ﬁlter. See

Ripple&Noise test setup. Use only as much output ﬁltering as needed and no

more. Larger caps (especially low-ESR ceramic types) may slow transient response

or degrade dynamic performance. Thoroughly test your application with all

components installed.

load of 20%Io max

Over temperature

protection

Automatic recovery

See OTP section

115

°C

Over Temperature

Protection Hysteresis See OTP section

Automatic recovery

Remote control speciﬁcations

Item

Test condition

Min

-0.7

2.4

Typ

Max

1.2

Units

Logic low voltage

Logic high voltage

Control current

Example:

25TMOW_4805S1.5

25 = 25Watt; T = SMT; M = Miniature; O = Open frame; W = wide

input (2:1); 36-75Vin; 5Vout; S = single output; 1.5 = 1500VDC

Page 1 of 6

GAPTEC-Electronic GmbH & Co. KG

sales@gaptec-electronic.com – www.gaptec-electronic.com

25TMOW_1.5 – Rev. 2020-1.0

Speciﬁcations subject to change without notice.

25TMOW_1.5 series

25W - Single Output - Wide Input - Isolated & Regulated

DC-DC Converter

Input speciﬁcations

Isolation speciﬁcations

Item

Test condition

Min

Typ

Max

Units

Test condition

Input/output

Test at 500VDC

Min

Typ

Max

Units

VDC

MΩ

Operating input

voltage

Isolation voltage*

Isolation resistance**

Isolation capacitance

1500

Max. input current

100% load Vin= Vin

(min) to Vin (max)

0.9

2200

Input current

no load, full input

Test duration 1 minute, leak current lower than 10mA

** The isolation resistance of input to output is no less than 10MΩ

Short circuit input

current

Reﬂected ripple

current

peak-to-peak

Inrush transient

Input fuse

Vin=48V

0.05

A²S

Fast blow

Product Selection Guide

Input Voltage [VDC]

Output Voltage

Output Current

Eﬃciency

[%, Min./Typ.]

Capacitive load

[µF, Max.]

Part Number

Nominal

Range

Max

[VDC]

[A, max]

36-75

5000

86/88

1000

25TMOW_4805S1.5

Typical characteristics

Eﬃciency

Derating

Converter Eﬃciency Vs. Output Current

Available load current vs. ambient temperature and

airﬂow for the module mounted horizontally

Dynamic Response

Vin=48V/Vo=5V,50%-75%-50%load,2.5A/µs @25°C

Output ripple & noise

@25°C(Vin=48V/Io=5A,20MHz bandwidth)

Page 2 of 6

GAPTEC-Electronic GmbH & Co. KG

sales@gaptec-electronic.com – www.gaptec-electronic.com

25TMOW_1.5 – Rev. 2020-1.0

Speciﬁcations subject to change without notice.

25TMOW_1.5 series

25W - Single Output - Wide Input - Isolated & Regulated

DC-DC Converter

Typical characteristics

Start-up

Typical Start-up @25°C(Vin=48V/Io=5A)

Typical Start-up @25°C(Vin=48V/Io=0A)

Test conﬁgurations

Input Reﬂected Ripple Current Test Setup

Output Ripple and Noise Test Setup

Measure input reﬂected ripple current with a simulated

source inductance of 12µH. The measurement points for

input reﬂected ripple current is showed above.

Scope measurements should be made using a BNC socket,

with 220µF Tantalum capacitor and 2*47µF ceramic

capacitor. Position the oscilloscope between 51mm and

76mm (2 inch and 3 inch) from the module.

Page 3 of 6

GAPTEC-Electronic GmbH & Co. KG

sales@gaptec-electronic.com – www.gaptec-electronic.com

25TMOW_1.5 – Rev. 2020-1.0

Speciﬁcations subject to change without notice.

25TMOW_1.5 series

25W - Single Output - Wide Input - Isolated & Regulated

DC-DC Converter

Remote on/oﬀ

Remote On/Oﬀ Implementation

The REM pin is used to turn the power converter remote on

or oﬀ via a system signal. This power module is negative

logic version. When the REM pin is at logic low the power

turns on and turns oﬀ at logic high. We also provide positive

logic remote On/Oﬀ, turns the module on during logic high

voltage and oﬀ during a logic low.

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

switch to control the voltage between the REM pin and -Vin

terminal (see Figure on the left). A logic low is VREM =-0.7V to

1.2V. During logic high, the maximum VREM voltage genera-

ted by the power module is 15V.

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

following to turn the converter on:

For negative logic, short REM pin to -Vin.

For positive logic, leave REM pin open.

Remote sense

Circuit conﬁguration for remote sense

Remote sense minimizes the eﬀects of distribution losses by

regulating the voltage at the remote sense connections (see

ﬁgure on the left). The voltage between the remote sense pins

and

the output terminals must not exceed the output voltage

sense range (<10% Vo(nom)).

The voltage between the +VO1 and GND terminals must not

exceed the minimum output overvoltage protection value

shown in the Electrical Speciﬁcations table. This limit includes

any increase in voltage due to remote sense compensation

and output voltage programming (trim). If not using the

remote sense feature to regulate the output at the point of

load, then connect +S to +VO1 and -S to GND.

Output voltage programming

Circuit conﬁguration to increase output voltage

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 +S or -S pins. If not using the trim feature, leave the

TRIM pin open.

To increase the output voltage, refer to the ﬁgure on the left.

A trim resistor, Rtrimup, is connected between the TRIM and +S.

Page 4 of 6

25TMOW_1.5 – Rev. 2020-1.0

Speciﬁcations subject to change without notice.

GAPTEC-Electronic GmbH & Co. KG

sales@gaptec-electronic.com – www.gaptec-electronic.com

25TMOW_1.5 series

25W - Single Output - Wide Input - Isolated & Regulated

DC-DC Converter

Output voltage programming

Circuit conﬁguration to decrease output voltage

Trimming beyond 110% of the rated output voltage is not an

acceptable design practice, as this condition could cause

unwanted triggering of the output overvoltage protection

(OVP) circuit. When trimming up, care must be taken not to

exceed the converter’s maximum allowable output power.

To decrease the output voltage (see ﬁgure on the left), a trim

resistor, Rtrimdown, should be connected between the TRIM

and -S, with a value of

Heat transfer via convection

Over temperature protection

Recommended airﬂow direction

Tref Temperature Measurement Location

Recommended reﬂow proﬁle

Lead-free (Pb-free) solder processes

For Pb-free solder processes, a pin temperature (TPIN) in excess of the sol-

der melting temperature (TL, +217°C to +221°C for Sn/Ag/Cu solder alloys)

for more than 30 seconds, and a peak temperature of +235°C on all solder

joints is recommended to ensure a reliable solder joint.

For Pb-free solder processes, the product is qualiﬁed for MSL 3 according to

IPC/JEDEC standard J-STD-020C. During reﬂow, TP must not exceed +245°C

at any time.

Page 5 of 6

GAPTEC-Electronic GmbH & Co. KG

sales@gaptec-electronic.com – www.gaptec-electronic.com

25TMOW_1.5 – Rev. 2020-1.0

Speciﬁcations subject to change without notice.

25TMOW_1.5 series

25W - Single Output - Wide Input - Isolated & Regulated

DC-DC Converter

Recommended EMC application

Suggested conﬁguration to meet the conducted emission limits of EN55022

Class B.

Mechanical dimensions

Surface mounting

Recommended pad layout

Pin designations

Note:

Dimensions are in millimeters and (inches).

Tolerances:

x.x mm 0.5 mm (x.xx in. 0.02 in.) ꢀunless otherwise indicated]

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

Page 6 of 6

GAPTEC-Electronic GmbH & Co. KG

sales@gaptec-electronic.com – www.gaptec-electronic.com

25TMOW_1.5 – Rev. 2020-1.0

Speciﬁcations subject to change without notice.

25TMOW [GAPTEC]

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