PowerBlock Micro-Miniature Modular Switching Power Supplies

300 Myles Standish blvd., Taunton, MA 02780

ph: 1-800-823-8082

Fax: 508-823-8181

www.ASTRODYNE.COM

SIDE VIEW

Dim. “H”

.20 (5.08) MIN.

.040 (1.016) DIA.

NOTES:

DIMENSIONS ARE IN INCH (mm)

TOLERANCES:

.XXX +/-.02(.508)

.XX +/-.05(1.27)

1.80 (45.72)

2.00 (50.80)

BOTTOM VIEW

ACL

ACN

-Vout

+Vout

.40 (10.16)

.10 (2.54)

MECHANICAL SpECIFICATIONS

pOwER bLOCk AppLICATION NOTES

Output Noise

The figure below ia a sample diagram to reduce Output Ripple

and Noise.

C1 = Electrolytic Capacitor

Capacitance = 22uF - 220uF

Voltage = Two times rated output voltage

L1 = 3uH - 10uH

C2 = Electrolytic Capacitor

Capacitance = 22uF - 47uF

Voltage = Two times rated output voltage

C3 = Ceramic Capacitor

Capacitance = 0.01uF - 0.1uF

Voltage = 50 volt

Notes:

1. The use of C1 alone may reduce noise to desired levels,

if not use L1, C2 and C3 in addition to C1.

2. The figure above is a suggested circuit. Only by trying true

application can levels be tested.

EMI

The figure below ia a suggested diagram to reduce

Electromagnetic Interference (EMI).

C1 = 0.22uF X Capacitor

L1 = 10mH - 30mH Common Mode, Choke

C2, C3 = 220pF Y Capacitors

Notes:

The diagram above is a recommended circuit, only by trying

true application can levels be measured.

Inrush Current

If desired, the use of a Choke, NTC or Inrush Current Limiter

may be used to reduce the Inrush Current

Dimension “H”

0.6 (15.24) for 5Watt/PWB Version

0.9 (22.86) for 10Watt/AFC Version