TPD2015FN

2022-03-15

5

© 2022

Toshiba Electronic Devices & Storage Corporation

7. Operational Description

7.1.

Over temperature protection

To prevent damage due to temperature rise, the outputs are turned off when the junction temperature of this

product exceeds the over temperature detection temperature (TSD).If the junction temperature falls below the

hysteresis set temperature (TSD-

ΔTSD), the product will return to normal operation.

7.2.

Over current protection

When the output current exceeds the over current detection value (IOC) due to a load short circuit, etc., the output

is turned off during the over current protection operating time (tOFF-DUTY).After that, the output returns, but if the

over current condition continues, the output is turned off again for the over current protection operating time (tOFF-

DUTY

).

7.3.

Timing chart

Figure 7.1

Timing chart

TSD

VIN

VOUT

Tj

IOC

IOUT

tOFF-DUTY

tOFF-DUTY

Over temperature

Over current

Over current

Normal

Over temperature

Over current

Normal

Inductive load

Energy

protection

protection

protection

regeneration

T

SD-ΔTSD