
Powersolve Electronics Ltd. Units 8A, Arnhem Road, Newbury, RG14 5RU. England
www.powersolve.co.uk
4
Remote ON/OFF Control
External Output Trimming
Output Noise
The PS50W Series allows the user to switch the module on and off electronically with remote on/off feature.
The PS50W Series are available in "positive logic" or "negative logic" (option).
Output may optionally be externally trimmed (+10%) with a fixed resistor or an external trimpot as shown.
The output noise is measur
ed with 10
µF tantalum capacitor and 1.0µF ceramic capacitor acr
oss output.
H
IGH SIGNAL HERE
D
ISABLE OUTPUT
O
N/OFF (2)
-VIN (4)
+SENSE (8)
-SENSE (6)
-SENSE (6)
TRIM (7)
TRIM (7)
+SENSE (8)
TRIM DOWN
10K ohms
TRIMPOT
TRIM UP
+Vout (9)
-Vout (5)
Ceramic
1.0µF
Solid tantalum
10µF
To
Scope
Resistor
Load
Negative
Logic Table
Logic Positive Logic
Logic Low -
Switch Closed
Logic High -
Switch Open
Module on
Module off
Module off
Module on
Logic State
(
Pin 2)
External Output
Output Noise Test Circuit schematic
A
L HERE
D
OUTPUT
O
N/OFF (2)
-VIN (4)
+SENSE (8)
-SENSE (6)
-SENSE (6)
TRIM (7)
TRIM (7)
+SENSE (8)
TRIM DOWN
10K ohms
TRIMPOT
TRIM UP
t (9)
- t (5)
Ceramic
1.0µF
Solid tantalum
10µF
To
Scope
Resistor
Load
Negative
Logic Table
Logic Positive Logic
Logic Low -
S
witch Closed
Logic High -
Switch Open
Module on
Module off
Module off
Module on
Logic State
(Pin 2)
External Output
Output Noise Test Circuit schematic
H
IGH SIGNAL HERE
D
ISABLE OUTPUT
O
N/OFF (2)
-VIN (4)
+
SENSE (8)
-SENSE (6)
-SENSE (6)
TRIM (7)
TRIM (7)
+SENSE (8)
TRIM DOWN
10K ohms
TRIMPOT
TRIM UP
+Vout (9)
-Vout (5)
Ceramic
1.0µF
Solid tantalum
10µF
To
Scope
Resistor
Load
Negative
Logic Table
Logic Positive Logic
Logic Low -
S
witch Closed
Logic High -
Switch Open
Module on
M
odule off
Module off
Module on
L
ogic State
(Pin 2)
External Output
Output Noise Test Circuit schematic
All Specifications T
ypical At Nominal Line, Full Load and 25
°
C Unless Other
wise Noted.
High Density DC-DC Modules
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