Technical Specification
S15-48-2.5
Turn-On Transient Waveforms
48Vin 2.5Vout 4.5A
Efficiency Curves
90
Efficiency (%)
BTCPower
TM
85
80
75
70
65
60
0.9
1.8
2.7
3.6
4.5
Output current (A)
36V
48V
75V
Fig 11. Efficiency vs. output current at various Input voltage.
The ambient temperature is 25°C.
Fig 9. Startup under positive logic control at Vin=48v, Iout
=3A. Ch2: ON/OFF signal (1V/div) , Ch1: Output voltage
(2V/div), Co=10µF tantalum capacitor + 1µF Ceramic
capacitor, time scale: 200µs/div
90
Efficiency (%)
85
80
75
70
65
0.9
1.8
2.7
3.6
4.5
Output current (A)
25°C
40°C
55°C
Fig 12. Efficiency at nominal input (48V) vs. load at different
ambient temperatures of 25°C, 40°C, 55°C without air flow,
the input voltage is 48V.
Fig 10. Startup under negative logic control at Vin=48v, Iout
=3A. Ch1: ON/OFF signal (5V/div) , Ch2: Output voltage
(2V/div), Co=10µF tantalum capacitor + 1µF Ceramic
capacitor, time scale: 200µs/div
Broadband TelCom Power, Inc. –
1719 S. Grand Avenue, Santa Ana, CA 92705 U.S.A.
P 9 of 11
Tel.: 714-259-4888 • Fax: 714-259-0840 • www.btcpower.com • Email: sales@btcpower.com PS S15-48-2.5 Rev4 1-30-05
BTCPOWER [ BROADBAND TELCOM POWER, INC. ]
