DS_B40SR12424_10282016

E-mail: dcdc@deltaww.com

http://www.deltaww.com/dcdc

P6

FEATURES DESCRIPTIONS

Output Over-Current Limit and Short Protection

The modules include internal output over-current limit (OCL) and short circuit protection (SCP) circuits, the

OCL set point is lower than that of the SCP; The response of SCP circuit is much fast than that of the OCL

circuit. The slowly increase of the output current will let module enter OCL protection when the current exceeds

the OCL set point, while the fast increase of the output current will let module enter SCP when the current

exceeds the SCP set point.

When the modules enter OCL protection, the output voltage will decrease while the output current is kept

constant, the output voltage will soft start to set point when the overload condition is removed.

The module will enter hiccup mode when it triggers the SCP set point. The module will try to restart after

shutdown. If the overload condition still exists, the module will shut down again. This restart trial will continue

until the overload condition is removed.

Output Over-Voltage Protection

The power module includes an internal output over-voltage protection(OVP) circuit, which monitors the voltage

on the output terminals. If this voltage exceeds the OVP set point, the module will shut down, and then restart

after a fixed delay time (hiccup mode), please refer to figure8 for detail.

Over-Temperature Protection

The over-temperature protection consists of circuitry that provides protection from thermal damage. If the

temperature exceeds the preset temperature threshold the module will shut down,and all components will not

exceed their absolute maximum temperature ratings.The module will restart after the temperature is within

specification.

Remote On/Off

B40SR12424C has Enable control function. This Enable PIN is designed on the primary side of converter, the

converter will turn on when the Enable PIN connected to VIN+, and turn off when the Enable PIN connected to

VIN- or floating.

Figure 16: suggested Enable connection

Input Reverse Voltage Protection

The input reverse voltage protection is provided by an diode on the input line, the standoff voltage for the

reverse protection shall be no less than -60V.