S25-48-1.8 BTCPOWER [Broadband TelCom Power, Inc.], S25-48-1.8 Datasheet - Page 9

• Manufacturer Part Number: S25-48-1.8
• Description: 48Vin 1.8Vout 8.0A
• Manufacturer: BTCPOWER [Broadband TelCom Power, Inc.]

Technical Specification
S25-48-1.8, S25-48-1.8N
Turn-On Transient Waveforms
Fig 9. Startup under positive logic control at Vin=48v, Iout
=5A. Ch2: ON/OFF signal (1V/div) , Ch1: Output voltage
(2V/div), Co=10 F tantalum capacitor + 1 F Ceramic
capacitor, time scale: 200 s/div
Fig 10. Startup under negative logic control at Vin=48v, Iout
=5A. Ch1: ON/OFF signal (5V/div) , Ch2: Output voltage
(2V/div), Co=10 F tantalum capacitor + 1 F Ceramic
capacitor, time scale: 200 s/div
Tel.: [phone] • Fax: [phone] • www.btcpower.com • Email: [e-mail]
Broadband TelCom Power, Inc. –
1719 S. Grand Avenue, Santa Ana, CA 92705 U.S.A.
48Vin 1.8Vout 8A
Efficiency Curves
Fig 11. Efficiency vs. output current at various Input voltage
The ambient temperature is 25 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.
85
80
75
70
65
85
80
75
70
65
1.6
1.6
3.2
3.2
Output current (A)
Output current (A)
PS S25-48-1.8 Rev 3 16-1-04
BTCPower
BTCPower
4.8
4.8
6.4
6.4
25°C
40°C
55°C
36V
48V
75V
P 9 of 11
8
8
T M