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High Density DC-DC Modules
PSQ75W Series
75 Watt
DC-DC Converters
Single Output
Features
• Quarter brick package
• Efficiency to 87%
• Ultra wide 4 : 1 input range
• Continuous short circuit protection
Electrical Specification
INPUT
Input Voltage Range 9 ~ 36V (24V version)
18 ~ 75V (48V version)
Undervoltage Lockout 8.8V (24Vin power up)
8.0V (24Vin power down)
17V (48Vin power up)
16V (48Vin power down)
Positive Logic Remote ON/OFF Open collector ref. to -Input
Module ON: >3.5VDC or open circuit, Module OFF: <1.8VDC
Add suffix N to Model Number for Negative Logic Remote ON/OFF control
Input Filter PI Type
www.powersolve.co.uk
OUTPUT
Voltage Accuracy ±1.5% max.
Transient Response: 25% Step Load Change <500µsec
External Trim Adj. Range ±10%
Ripple & Noise, 20MHz BW 40mV rms max., 100mV pk-pk max. (3.3V & 5V output versions)
ENVIRONMENTAL
Temperature coefficient ±0.03%/°C max.
Short Circuit Protection Continuous
Line Regulation ±0.2% max. measured over full input range
Load Regulation ±0.2% max. measured from 0-100% load
Over Voltage Protection trip range, % Vo nom. 115 ~ 140%
Current Limit 110% ~ 140% Nominal Output
GENERAL
Efficiency See table
Isolation Voltage IP/OP, IP/Case, OP/Case: 1500VDC min.
Isolation Resistance 107ohms min.
Switching Frequency 300KHz typ.
Thermal shutdown, case temp. 105°C typ.
Operating case temperature range -40°C to +100°C
Storage temperature range -55°C to +105°C
Dimensions 1.45 x 2.28 x 0.5 inches
Case material Aluminium baseplate with plastic case
60mV rms max., 150mV pk-pk max. (12V & 15V output versions)
100mV rms max., 240mV pk-pk max. (24V output version)
measured with a 10µF Tantalum & 1.0µF Ceramic capacitor across the output
36.8 x 57.9 x 12.7 mm
Powersolve Electronics Ltd. 8A Arnhem Road, Newbury, RG14 5RU. England
Tel: 01635 521858 Fax: 01635 523771 Email: [email protected]
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High Density DC-DC Modules
www.powersolve.co.uk
Output Voltage and Current Ratings
MODEL INPUT OUTPUT OUTPUT INPUT CURRENT % EFF.
PSQ75W-24S3V3 3.3VDC 12A 2037mA 81
PSQ75W-24S05 5VDC 12A 2967mA 84
PSQ75W-24S12 9 - 36VDC 12VDC 6.25A 50mA 3634mA 86
PSQ75W-24S15 15VDC 5A 3634mA 86
PSQ75W-24S24 24VDC 3.12A 3628mA 86
PSQ75W-48S3V3 3.3VDC 12A 1006mA 82
PSQ75W-48S05 5VDC 12A 1471mA 85
PSQ75W-48S12 18 - 75VDC 12VDC 6.25A 30mA 1817mA 86
PSQ75W-48S15 15VDC 5A 1796mA 87
PSQ75W-48S24 24VDC 3.12A 1796mA 87
NOTE: Nominal Input Voltage 24VDC & 48VDC
Mechanical and Connection Details
VOLTAGE VOLTAGE CURRENT max. NO LOAD FULL LOAD
Pin Function
1 +Vin
2 ON/OFF
3 -Vin
4 -Vout
5 -Sense
6 Trim
7 +Sense
8 +Vout
All dimensions in inches (mm)
Tolerances: Inches x.xx ±0.02 x.xxx ±0.010
Remote ON/OFF Control
The PSQ75W Series allows the user to switch the module on and off electronically with the remote on/off feature.
The PSQ75W Series are available with “positive logic” or “negative logic” (option).
Logic Table
External Output Trim
The output can be trimmed externally (±10%) using a fixed resistor or
a trimpot as shown.
Logic State
(Pin 2)
Logic low-
Switch closed
Logic high-
Switch open
The output noise is measured with a 10µF tantalum and a 1.0µF
ceramic capacitor across the output.
+Vout
Negative
Logic
Module on Module off
Module off Module on
Output Noise
Pin Connection
Millimeters x.x ±0.5 x.xx ±0.25
Positive
Logic
-Vout
All specifications typical at nominal line, full load and 25°C unless otherwise stated.
Powersolve Electronics Ltd. 8A Arnhem Road, Newbury, RG14 5RU. England
Tel: 01635 521858 Fax: 01635 523771 Email: [email protected]
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