Technical Reference Notes
AEH/ALH80 Series
Electrical Specifications (continued)
SAFETY APPROVAL
The AEH80/ALH80 series have been certified through:
•
UL + cUL 60950, Third Edition - Recognized (PENDING)
•
EN 60950 through TUV-PS (PENDING)
•
Meets Basic Insulation
TO OSCILLOSCOPE
Ltest
12 uH
BATTERY
Cs 220 uF
ESR < 0.1 OHM
@ 20 ºC, 100 kHz
33 uF
ESR < 0.7 OHM
@ 20 ºC, 100 kHz
Vi(+)
Vi(-)
Note: Measure the input reflected ripple current with a simulated source
inductance (Ltest) of 12uH. Capacitor Cs offsets possible battery/
source impedance. Measure current as shown above.
Figure 1. Input Reflected Ripple Current Measurement Setup.
COPPER STRIP
Vo(+)
0.1 uF
1
µ
F
Vo(-)
10 uF
SCOPE
RESISTIVE
LOAD
Note: Use a 0.1µF 50V X7R ceramic capacitor and a 10µF 25V tantalum cap.
Scope measurement should be made using a BNC probe socket positioned
about 76mm (3 in.) away from the module’s output terminals. The ext.
capacitors should be placed between the BNC socket and the module’s
output terminals, with a minimum distance of 51mm (2in.) from the latter.
Figure 2. Peak to Peak Output Noise Measurement Setup.
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
SHEET 6 OF 17
ASTEC [ Astec America, Inc ]
