SSQE48T15033-PABNG datasheet, PDF

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SSQE48T15033-PABNG: Descriptionisolated DC/DC converters; Categorysemiconductor Power management; File Size504KB，13 Pages; ManufacturerPower-One (bel); Websitehttps://belfuse.com/; Environmental Compliance

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SSQE48T15033-PABNG Overview

isolated DC/DC converters

SSQE48T15033-PABNG Parametric

Parameter Name	Attribute value
Manufacture	Power-One
Product Category	Isolated DC/DC Converters
RoHS	Yes
Produc	Isolated
Output Powe	50 W
Input Voltage Range	36 V to 75 V
Input Voltage-nominal	48 V
Number of Outputs	1
Output Voltage-Channel 1	3.3 V
Output Current-Channel 1	15 A
Isolation Voltage	2.25 kV
Mounting Style	Through Hole
Package / Case Size	Sixteenth Brick
Output Type	Isolated
Factory Pack Quantity	250

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DATA SHEET

SSQE48T15033 DC-DC CONVERTER

36-75V

Input; 3.3V

, 15A, 50W Output

FEATURES



RoHS lead-free solder and lead-solder-exempted products are available

Industry-standard DOSA pinout

Output: 3.3V at 15A

On-board input differential LC-filter

Start-up into pre-biased load

No minimum load required

Weight: 0.44oz [12.3 g]

Meets Basic Insulation requirements of EN60950

Withstands 100V input transient for 100ms

Fixed-frequency operation

Hiccup overcurrent protection

Fully protected (OTP, OCP, OVP, UVLO)

Remote sense

Remote ON/OFF positive or negative logic option

Output voltage trim range: +10%/−20% with industry-standard trim

equations

Low height of 0.374” (9.5mm)

Industry standard 1/16th brick footprint: 0.9” by 1.3”

High reliability: MTBF = 16.23 million hours, calculated per Telcordia TR-

332, Method I Case 1

UL60950 recognized in US and Canada and DEMKO certified per

IEC/EN60950

Designed to meet Class B conducted emissions per FCC and EN55022

when used with external filter

All materials meet UL94, V-0 flammability rating

APPLICATIONS

Telecommunications

Data communications

Wireless communications

Servers, workstations



BENEFITS



High efficiency – no heat sink

required

Cost effective, single board design

Small size and low-profile



DESCRIPTION

The new

SSQE48T15033

DC-DC converter is an open frame sixteenth-brick DC-DC converter that conforms to the Distributed Open

Standards Architecture (DOSA) specifications. The converter operates over an input voltage range of 36 to 75VDC, and provides a

tightly regulated output voltage with an output current up to 15A. The output is fully isolated from the input and the converter meets

Basic Insulation requirements permitting a positive or negative output configuration.

The converter is constructed using a single-board approach with both planar and discrete magnetics. The standard feature set includes

remote On/Off (positive or negative logic), input undervoltage lockout, output overvoltage, overcurrent, and short circuit protections,

output voltage trim, and overtemperature shutdown with hysteresis.

With standard pinout and trim equations and excellent thermal performance, the SSQE48T15033 converters can replace in most cases

existing eighth-brick converters. Inclusion of this converter in a new design can result in significant board space and cost savings.

ZD-01726_2.1_October-21-2013

www.power-one.com

DATA SHEET

The positive logic version turns on when the ON/OFF pin is at a logic high and turns off when the pin is at a logic low. The

converter is on when the ON/OFF pin is left open. See the Electrical Specifications for logic high/low definitions.

The negative logic version turns on when the pin is at a logic low and turns off when the pin is at a logic high. The ON/OFF

pin can be hard wired directly to Vin(-) to enable automatic power up of the converter without the need of an external control

signal.

The ON/OFF pin is internally pulled up to 5 V through a resistor. A properly de-bounced mechanical switch, open-collector

transistor, or FET can be used to drive the input of the ON/OFF pin. The device must be capable of sinking up to 0.2 mA at a

low level voltage of



0.8 V. An external voltage source (± 20 V maximum) may be connected directly to the ON/OFF input, in

which case it must be capable of sourcing or sinking up to 1 mA depending on the signal polarity. See the Startup

Information section for system timing waveforms associated with use of the ON/OFF pin.

2.3

REMOTE SENSE (PINS 5 AND 7)

The remote sense feature of the converter compensates for voltage drops occurring between the output pins of the converter

and the load. The SENSE(-) (Pin 5) and SENSE(+) (Pin 7) pins should be connected at the load or at the point where

regulation is required (see Fig. B).

Fig. B: Remote sense circuit configuration.

SSQE48 Converter

Vin (+)

(Top View)

ON/OFF

Vout (+)

100

SENSE (+)

Vin

TRIM

SENSE (-)

Rload

Vin (-)

Vout (-)

CAUTION

If remote sensing is not utilized, the SENSE(-) pin must be connected to the Vout(-) pin (Pin 4), and the SENSE(+) pin

must be connected to the Vout(+) pin (Pin 8) to ensure the converter will regulate at the specified output voltage. If these

connections are not made, the converter will deliver an output voltage that is higher than the specified data sheet value.

Because the sense leads carry minimal current, large traces on the end-user board are not required. However, sense traces

should be run side by side and located close to a ground plane to minimize system noise and ensure optimum performance.

The converter’s output overvoltage protection (OVP) senses the voltage across Vout(+) and Vout(-), and not across the

sense lines, so the resistance (and resulting voltage drop) between the output pins of the converter and the load should be

minimized to prevent unwanted triggering of the OVP.

When utilizing the remote sense feature, care must be taken not to exceed the maximum allowable output power capability of

the converter, which is equal to the product of the nominal output voltage and the allowable output current for the given

conditions.

When using remote sense, the output voltage at the converter can be increased by as much as 10% above the nominal

rating in order to maintain the required voltage across the load. Therefore, the designer must, if necessary, decrease the

maximum current (originally obtained from the derating curves) by the same percentage to ensure the converter’s actual

output power remains at or below the maximum allowable output power.

2.4

OUTPUT VOLTAGE ADJUST /TRIM (PIN 6)

The output voltage can be adjusted up 10% or down 20%.

The TRIM pin should be left open if trimming is not being used. To minimize noise pickup, a 0.1µ F capacitor is connected

internally between the TRIM and SENSE(-) pins.

To increase the output voltage, refer to Fig. C. A trim resistor, R

T-INCR

, should be connected between the TRIM (Pin 6) and

SENSE(+) (Pin 7), with a value of:

SSQE48T15033 DC-DC Converter

www.power-one.com

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