Page 1
High Density DC-DC Modules
PSQ75 Series
50 to 75 Watt Wide Input
DC-DC Converters
Single Output
Features
• 50-75W Isolated Output
• Efficiency to 90%
• 300KHz Switching Frequency
• 2:1 Input Range
• Open Frame Version Optional
• Regulated Outputs
• Continuous Short Circuit Protection
• Industry Standard Quarter-Brick Package
www.powersolve.co.uk
MODEL INPUT OUTPUT OUTPUT INPUT CURRENT %EFF
PSQ75-24S18 18-36 VDC 1.8 VDC 0.5-25 A 60 mA 2259 mA 83
PSQ75-24S25 18-36 VDC 2.5 VDC 0.5-25 A 60 mA 3064 mA 85
PSQ75-24S33 18-36 VDC 3.3 VDC 0.5-20 A 70 mA 3125 mA 88
PSQ75-24S05 18-36 VDC 5 VDC 0.5-15 A 80 mA 3472 mA 90
PSQ75-48S18 36-75 VDC 1.8 VDC 0.5-25 A 50 mA 1116 mA 84
PSQ75-48S25 36-75 VDC 2.5 VDC 0.5-25 A 50 mA 1514 mA 86
PSQ75-48S33 36-75 VDC 3.3 VDC 0.5-20 A 50 mA 1563 mA 88
PSQ75-48S05 36-75 VDC 5 VDC 0.5-15 A 80 mA 1736 mA 90
NOTE: 1. Nominal Input V
VOLTAGE VOLTAGE CURRENT NO LOAD FULL LOAD
oltage 24 or 48 VDC
Powersolve Electronics Ltd. Units 8A, Arnhem Road, Newbury, RG14 5RU. England
Tel:01635 521858 Fax: 01635 523771 Email: [email protected]
1
Page 2
High Density DC-DC Modules
All Dimensions In Inches(mm)
(50.8)
2.00
(57.9)
2.28
(7.62)
0.30
3
BOTTOM VIEW
4
5
6
7
8
2
1
(15.24)
0.60
(47.2)
1.86
(15.24)
0.60
(26.2)
1.03
(36.8)
1.45
(7.62)
0.300
0.059 (1.5)
DIA 2PLACES
0.04 (1.02)
DIA 6PLACES
(12.7)
0.50
(4.1)
0.16
Mounting Inserts
M3 x 0.5 Through 4pl.
Suffix "O" Type
BOTTOM VIEW
4
5
3
2
1
6
7
8
min.
X.XX in.+.02 in.(X.X mm +.5mm)
X.XXX in.+.010 in.(X.XX mm
+
.25mm)
Tolerances
www.powersolve.co.uk
Electrical Specification
NPUT
I
Input Voltage Range 24V 18-36V
ndervoltage lockout 24Vin power up 17V
U
8Vin power up 34V
4
Positive Logic Remote ON/OFF
nput Filter Pi Type
I
UTPUT
O
oltage Accuracy : +1% max.
V
3.4
Transient Response : 75% - 100% Step Load Change
Error Band +5% Vout
ecovery Time <500
xternal Trim Adj. Range +10%
E
ipple & Noise, 20MHz BW, 40mV RMS., max. 100mV pk-pk, max.
R
R
ENVIRONMENTAL
Temperature Coefficient +0.03%/°C
Short Circuit Protection Continuous
ine Regulation
L
oad Regulation
L
1
2
Over Voltage Protection trip Range, % Vo nom. 115-140%
Current Limit 110% ~140% Nominal Output
GENERAL
iciency See Table
Eff
Isolation Voltage Input/Output 1500VDC min.
Isolation Resistance 107ohm min.
Switching Frequency 300KHz, Typ.
Operating case Temperature -40°C to 100°C Typ.
Storage Temperature -40°C to +105°C
Thermal Shutdown, Case Temp. 100°C Typ.
Dimensions 1.45x2.28x0.50 inches
Case Material (Standard) Aluminium baseplate with Plastic Case
(Suffix”O”Type) Open Frame
48V 36-75V
ower down 15.5V
p
power down 32.5V
.2% max.
+0
.2% max.
+0
Input/Case 1500VDC min.
utput/Case 1500VDC min.
O
(36.8x57.9x12.7 mm)
µs
NOTE:
1. Measured From High Line to Low Line. 2. Measured From Full Load to Zero Load. 3. Logic Compatibility - Open Collector Ref. to -Input,
Module ON - Open Circuit, Module OFF - < 0.8Vdc 4. Suffix "N" to the Model Number with Negative Logic Remote ON/OFF. 5. Suffox “O” to
the Model Number with Open Frame Type.
Pin Connection
Pin Function
1 +Vin
2
3
4 -Vout
5 -Sense
6 Trim
7 +Sense
Powersolve Electronics Ltd. Units 8A, Arnhem Road, Newbury, RG14 5RU. England
Tel:01635 521858 Fax: 01635 523771 Email: [email protected]
All Specifications Typical At Nominal Line, Full Load and 25°C Unless Otherwise Noted.
8 +Vout
ON/OFF
in
-V
2
Page 3
Power Dissipated vs Ambient Temperature and Air Flow
N
atural Convectio
20 ft./min. (0.1 m/s)
n
1
00 ft./min. (0.5 m/s)
2
00 ft./min. (1.0 m/s)
300 ft./min. ( 1.5 m/s)
400 ft./min. (2.0 m/s)
12
8
1
0
6
4
2
0
0
10 20
30
40 50
60
70 80 90
100
Ambient Temperature, Ta (Deg. C)
Power Disspated, Pd (Watts)
External Output
High Density DC-DC Modules
www.powersolve.co.uk
Application Note
Derating:
The operating case temperature range of the PSQ75 series is -40°C to +100°C. When operating the PSQ75 series,
proper derating or cooling is needed.
The following curve is the derating curve of a PSQ75 without heat sink.
Where:
The power dissipation (Pd):
Pd = Pi - Po = Po (1-n) /n
esistance are listed below:
mal r
The ther
Chart of Thermal Resistance vs Air Flow:
AIR FLOW RA
Natural Convection 20ft./min. (0.1m/s) 10.1 °C/W
100 ft./min. (0.5m/s) 8.0 °C/W
200 ft./min. (1.0m/s) 5.4 °C/W
300 ft./min. (1.5m/s) 4.4 °C/W
400 ft./min. (2.0m/s) 3.4 °C/W
The temperatur
TE
e rise (
T ):
T = Pd * Rca
TYPICAL Rca
3
Powersolve Electronics Ltd. Units 8A, Arnhem Road, Newbury, RG14 5RU. England
Tel:01635 521858 Fax: 01635 523771 Email: [email protected]
Page 4
HIGH SIGNAL HERE
DISABLE OUTPUT
ON/OFF
-VIN
L
ogic Table
External Output
Output Noise Test Circuit schematic
Negative Logic Positive Logic
Logic Low -
Switch Closed
Logic High -
Switch Open
Module on
Module off
Module off
Module on
+SENSE (7)
-SENSE (5)
-SENSE (5)
+SENSE (7)
TRIM (6)
TRIM (6)
TRIM UP
TRIM DOWN
10K ohms
TRIMPOT
+Vout (8)
(4)
-Vout
Ceramic
1.0µF
Solid Tantalum
10µF
To
Scope
Resistor
Load
L
ogic State
High Density DC-DC Modules
www.powersolve.co.uk
Remote ON/OFF Control
The PSQ75 series allows the user to switch the module on and off electronically with remote on/off feature.
The PSQ75 series are available with "positive logic" or "negative logic" (option).
External Output Trimming
Output may optionally be externally trimmed (+10%) with a fixed resistor or an external trimpot as shown.
Output Noise
The output noise is measur
ed with 10
µF tantalum capacitor and 1.0µF ceramic capacitor acr
oss output.
All Specifications Typical At Nominal Line, Full Load and 25°C Unless Otherwise Noted.
Powersolve Electronics Ltd. Units 8A, Arnhem Road, Newbury, RG14 5RU. England
Tel:01635 521858 Fax: 01635 523771 Email: [email protected]
4
Loading...