STEVAL-ISF002V1 STMicroelectronics, STEVAL-ISF002V1 Datasheet - Page 25

• Manufacturer Part Number: STEVAL-ISF002V1
• Description: BOARD EVALUATION
• Manufacturer: STMicroelectronics

Specifications of STEVAL-ISF002V1

• Main Purpose: *
• Embedded: *
• Utilized Ic / Part: *
• Primary Attributes: *
• Secondary Attributes: *
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-10422

UM0877
3.5.6
Overcurrent protection
Figure 21. STEVAL-ISF002V1 - overcurrent protection section
This hardware protection unit uses a feature of the TD352. The output is fixed to zero as
soon as a high level is detected on its "desat" pin (pin 4).
While the Q2 NPN transistor is in saturation, the voltage on the "desat" pin is zero.
Otherwise the voltage on the "desat" pin is 15 V and the output of the TD352 is fixed to zero.
Q2 remains saturated until I
In fact, the second operational amplifier inside the TSV992 is used as a comparator and its
output is high if the following conditions are met.
RSense
Doc ID 16854 Rev 1
goes below 14.3 V.
STEVAL-ISF002V1 hardware description
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