Technical Reference Notes (AEH60/ALH60F48)
SAFETY APPROVAL
The series have been certified through:
•
UL, cUL 60950 (Recognized)
•
EN 60950 through TUV- PS
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
(L
TEST
) of 12uH. Capacitor C
S
offsets possible battery impedance. Measure
current as shown above.
Figure 1. Input Reflected -Ripple Test Setup
COPPER STRIP
Vo(+)
0.1 uF
Vo(-)
10 uF SCOPE
RESISTIVE
LOAD
Note:
Use a 0.1µF @50V X7R ceramic capacitor and a 10µF @ 25V tantalum
capacitor. Scope measurement should be made using a BNC socket.
Position the load between 51 mm and 76 mm (2 in. and 3 in.) from module.
Figure 2. Peak to Peak Output Noise and Ripple Test Measurement Setup
MODEL: AEH/ALH60F48
SEPTEMBER 26, 2002 - REVISION 02
SHEET 6 OF 21
ASTEC [ Astec America, Inc ]
