Powersolve PSQ75 Series - Manual (Page 4)

Powersolve Electronics Ltd. Units 8A, Arnhem Road, Newbury, RG14 5RU. England
Tel:01635 521858 Fax: 01635 523771 Email: [email protected]
www.powersolve.co.uk
4
Remote ON/OFF Control
External Output Trimming
Output Noise
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).
Output may optionally be externally trimmed (+10%) with a fixed resistor or an external trimpot as shown.
The output noise is measured with 10 µF tantalum capacitor and 1.0µF ceramic capacitor across output.
HIGH SIGNAL HERE
DISABLE OUTPUT
ON/OFF
-VIN
Logic Table
External Output
Output Noise Test Circuit schematic
E
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
Logic State
All Specifications Typical At Nominal Line, Full Load and 25°C Unless Otherwise Noted.
High Density DC-DC Modules