S25-48-1.8 BTCPOWER [Broadband TelCom Power, Inc.], S25-48-1.8 Datasheet - Page 8

• 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
Start up Information
Scenario #1: Initial Start up from power supply
On/Off function enabled, the unit starts via input
voltage Vin, see Fig 7
Time
For this example, the unit total start up time (t3- t1) is
typically 200us.
Scenario #2: Initial Start up using On/Off Pin
With Vin previously powered, the unit starts via
On/Off pin, see Fig 8
Time
For this example, the unit total start up time (t3- t1) is
typically 300us.
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t0
t0
Broadband TelCom Power, Inc. –
t1
t2
t3
t1
t2
t3
On/Off pin is On: system front-end power is switched
on, Vin to unit begins to rise.
The unit begins to turn on ( unit turn-on delay).
Vin crosses Under Voltage Lockout protection circuit
threshold: the unit enabled to be on
Unit output voltage reaches 100% of normal
voltage.
enabled)
Vin at nominal value.
Arbitrary time when On/Off pin is enabled (Unit
End of unit turn-on delay
Unit Vout reaches 100% of nominal voltage.
.
.
Comments
Comments
1719 S. Grand Avenue, Santa Ana, CA 92705 U.S.A.
48Vin 1.8Vout 8A
Fig 8. Start up using On/Off pin
Fig 7. Start up waveform
PS S25-48-1.8 Rev 3 16-1-04
BTCPower
BTCPower
P 8 of 11
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