ULQ-1.2/15-D48 Datel, Inc., ULQ-1.2/15-D48 Datasheet

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ULQ-1.2/15-D48

Manufacturer Part Number
ULQ-1.2/15-D48
Description
DC/DC Power Converters
Manufacturer
Datel, Inc.
Datasheet
DATEL, Inc., Mansfi eld, MA 02048 (USA) · Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 · Email: sales@datel.com · Internet: www.datel.com
Features
Standard quarter-brick package/pinout
in through-hole or SMT version
Low cost; Low profi le, 0.35" (8.9mm)
24V and 48V nominal inputs
Output current: 15 to 25 Amps
Output voltages: 1.2/1.5/1.8/2/2.5/3.3V
Interleaved synchronous-rectifi er topology
· Ultra high effi ciency
· No output reverse conduction
Outstanding thermal performance
On/off control, trim & sense functions
Fully isolated, 2250Vdc (BASIC)
Output overvoltage protection
Fully I/O protected; Thermal shutdown
UL/EN/IEC60950 safety approvals
Qual/HALT/EMI tested
CONTROL*
REMOTE
ON/OFF
(2)
+V
–V
(3)
(1)
IN
IN
INPUT UNDERVOLTAGE, INPUT
OVERVOLTAGE, AND OUTPUT
OVERVOLTAGE COMPARATORS
reduced cost DATEL's new ULQ Series "Quarter-Brick" DC/DC Converters suit
perfectly. They measure just 1.45 x 2.30 x 0.35 inches (36.8 x 58.4 x 8.9mm) and fi t
the industry-standard footprint. You can also "pick-and-place" the ULQ-SMT version
optimizing your automated SMT process.
fully rated at 15 or 25 Amps and 2.5 or 3.3 Volts at 15 or 20 Amps. They employ
an interleaved, synchronous-rectifi er topology that exploits 100% of their duty cycle.
They simultaneously achieve ultra-high effi ciency (to 91%), tight line/load regulation
(±0.125/0.5%), low noise (25-75mVp-p), and quick step response (200µsec).
count, high effi ciency, low-on-resistance FET's, and planar magnetics embedded in
heavy-copper pc boards all contribute to impressive thermal derating.
undervoltage shutdown, output overvoltage protection, current limiting, short-circuit
protection and thermal shutdown. The standard footprint carries on/off control (posi-
tive or negative polarity), output trim (+10/–20%) and output sense functions.
of UL/EN/IEC60950 and they will carry the CE mark. Safety certifi cations, EMC
compliance testing and qualifi cation testing (including HALT) are currently in prog-
ress. Contact DATEL for latest updates.
CONTROLLER
For applications requiring improved electrical and thermal perfomance at
From an 18-36V or 36-75V input, ULQ's deliver outputs of 1.2, 1.5, 1.8, or 2 Volts
A state of the art, single-board, open-frame design with reduced component
The ULQ's feature set includes high isolation (2250Vdc), input pi fi lters, input
All ULQ quarter-bricks are designed to meet the BASIC-insulation requirements
PWM
Figure 1. Simplifi ed Schematic
* Can be ordered with positive (standard) or negative (optional) polarity.
ISOLATION
CONTROL
SWITCH
OPTO
15-25 Amp DC/DC Converters
REFERENCE &
ERROR AMP
Low-Profi le, Quarter-Brick
Single Output
®
INNOVATION and EX C ELL E N C E
ULQ Models
+SENSE
+V
–V
–SENSE
TRIM
(8)
(4)
V
(7)
(6)
OUT
OUT
(5)
OUT
®

Related parts for ULQ-1.2/15-D48

ULQ-1.2/15-D48 Summary of contents

Page 1

... You can also "pick-and-place" the ULQ-SMT version optimizing your automated SMT process. From an 18-36V or 36-75V input, ULQ's deliver outputs of 1.2, 1.5, 1. Volts fully rated Amps and 2.5 or 3.3 Volts Amps. They employ an interleaved, synchronous-rectifi er topology that exploits 100% of their duty cycle. ...

Page 2

... XLQ Series Performance Specifi cations and Ordering Guide ➁ OUT OUT Model (Volts) (Amps) ➄ ULQ-1.2/15-D48 1.2 15 ➄ ULQ-1.2/25-D48 1.2 25 ULQ-1.5/15-D48 1.5 15 ULQ-1.5/25-D24 1.5 25 ULQ-1.5/25-D48 1.5 25 ULQ-1.8/15-D48 1.8 15 ULQ-1.8/25-D24 1.8 25 ULQ-1.8/25-D48 1.8 25 ULQ-2/15-D48 2 15 ULQ-2/25-D24 2 25 ULQ-2/25-D48 ...

Page 3

... See Output Trimming for detailed trim equations. (9) (10) The Current-Limit Inception point is the output current level at which the ULQ’s power-limiting circuitry drops the output voltage 2% from its initial value. See Output Current Limiting and Short-Circuit Protection for more details. See Performance Curves for additional information. ...

Page 4

... The ULQ Series implements a soft start circuit to limit the duty cycle of its PWM controller at power up, thereby limiting the input inrush current. ...

Page 5

... Nevertheless, if the sense function is not used for remote regulation the user should connect the +Sense to +V DC/DC converter pins. ULQ series converters employ a sense feature to provide point of use regula- tion, thereby overcoming moderate IR drops in pcb conductors or cabling. The remote sense lines carry very little current and therefore require minimal cross-sectional-area conductors ...

Page 6

... R TRIM UP 5 –SENSE 4 –OUTPUT 8 +OUTPUT 7 +SENSE 6 TRIM LOAD R TRIM DOWN 5 –SENSE 4 –OUTPUT Trim Equations ULQ-1.2/15-D48 & ULQ-1.2/25-D48 – 0.793) 1.037 O –1.413 R (kΩ DOWN V – 1.2 1.2 – ULQ-1.5/15-D48, ULQ-1.5/25-D24 & D48 6.23(V – 1.226) 7.64 O –10.2 R (kΩ) = ...

Page 7

... ULQ Models Model ULQ-2 INCREASE (%) OUT Model ULQ-3 INCREASE (%) OUT in Output Voltage Model ULQ-1.5 Model ULQ-1.8 Model ULQ-2 Model ULQ-2.5 Model ULQ-3 DECREASE (%) OUT ...

Page 8

... Figure 8. Driving the Positive Polarity On/Off Control Pin Surface-Mount Package ("M" suffi x) DATEL's ULQ series SMT DC/DC converters are the only higher-power (to 66W) DC/DC's that can be automatically "pick-and-placed" using standard vacuum-pickup equipment and subsequently refl owed using high-tempera- ture, lead-free solder. ...

Page 9

... ULQ-1.5/25-D24 Efficiency vs. Line Voltage and Load Current 18V 24V 36V 2.5 5 7.5 10 12.5 15 Load Current (Amps) ULQ-1.5/15-D48 Efficiency vs. Line Voltage and Load Current ...

Page 10

... XLQ Series Typical Performance Curves, 1.8V Models ULQ-1.8/15-D48 Efficiency vs. Line Voltage and Load Current 36V 48V 75V 1.5 3 4.5 6 7.5 9 Load Current (Amps) ULQ-1.8/25-D24 Efficiency vs. Line Voltage and Load Current ...

Page 11

... ULQ-2/15-D48 Efficiency vs. Line Voltage and Load Current 48V 75V 1.5 3 4.5 6 7.5 9 Load Current (Amps) ULQ-2/25-D24 Efficiency vs. Line Voltage and Load Current ...

Page 12

... XLQ Series ULQ-2.5/15-D48 Efficiency vs. Line Voltage and Load Current 48V 75V 1.5 3 4.5 6 7.5 9 Load Current (Amps) ULQ-2.5/20-D48 Efficiency vs. Line Voltage and Load Current 36V 48V 75V ...

Page 13

... ULQ-3.3/15-D48 Efficiency vs. Line Voltage and Load Current 48V 75V Load Current (Amps) ULQ-3.3/20-D48 Efficiency vs. Line Voltage and Load Current ...

Page 14

... DATEL makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifi cations are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark. ...

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