HB75D-48 Datasheet, PDF (6/7 Pages) Broadband TelCom Power, Inc. – 48Vin Dual Output 15/15A Half Bricks

Technical Specification
HB75D-48 Series
Protection Features
Dual output Half Bricks 75W
BTCPower^TM
Input Under-voltage lockout ( IUV )
Input under voltage ( IUV ) is standard with the
HB unit. The unit will shut down when the input
voltage drops below a threshold, and the unit will
turn on when the input voltage goes to the upper
threshold.
The hysteretic voltage of the under voltage
protection is 1V, normally from the 35V to 34V
range.
Over Temperature Protection ( OTP )
The unit will shut down when the base plate
temperature exceeds the protection threshold.
The unit will shut down under the base plate
temperature over a 105°C condition to protect the
unit from overheating. The OTP circuit will turn
the unit off when OTP happens. Once the unit
has shut down, it will restart at the cycle when the
base plate temperature goes down.
Output Over-current Protection ( OCP )
The unit will shut down when the over current or
short circuit condition exists.
Once the OCP happens, the unit has shut down.
The attempted restart will continue indefinitely
until the over current or short circuit condition is
removed. When OCP happens, the output
voltage drops below 1.1V.
Input voltage has almost no effect on the current
limit point.
Output Over-voltage Protection ( OVP )
The unit will shut down when the output voltage
exceeds the over voltage threshold.
If the output voltage across Vout(+) (pin9) and
Vout(-) (pin5) exceeds the threshold of the OVP
circuitry, the unit has shut down which is caused
by an OVP circuit, and the unit will never restart,
and the output voltage is below 0.5V.
Broadband TelCom Power, Inc. 1719 S. Grand Avenue, Santa Ana, CA 92705 U.S.A. P 6 of 7
Tel.: [phone] • Fax: [phone] • www.btcpower.com • Email: [e-mail] • PS HB75D-48 Rev1 10-14-02