Board description

UM1483

16/35

Doc ID 022398 Rev 1

3.3.4

Power block based on IGBT module

The IGBT SLLIMM™ module STGIPN3H60 consists of high rugged IGBT power switches

and three smart drivers. STGIPN3H60 is provided with advanced gate smart drivers and

many features, such as integrated comparators for overcurrent or short-circuit protection,

free operational amplifier and the “SMART SHUTDOWN” function are available. Please

refer to the STMicroelectronics STGIPN3H60 device datasheets for more information.

3.3.5

Overcurrent protection

Hardware overcurrent protection (OCP) is implemented on the board. This feature takes

advantage of STGIPN3H60 SLLIMM™ module where an internal comparator is

implemented. Thanks to the internal connection between the comparator output and

shutdown block of the IPM, the intervention time of overcurrent protection is extremely low,

ranging slightly above 200 ns. Please see Figure 7 for a detailed view of OCP.

Overcurrent protection acts as soon as the voltage on the CIN pin rises above the internal

OCP shunt resistor, it follows that the maximum allowed current is equal to:

Equation 1

with the default values this gives:

36

S

37

PA14

I/O

PA14

JTAG

38

PA15

I/O

PA15

JTAG

39

PB3

I/O

PB3

JTAG

40

PB4

I/O

PB4

JTAG

41

PB5

O

PB5

LED 2

42

PB6

O

PB6

LED 1

43

PB7

Not connected

44

BOOT 0

GND

45

PB8

Not connected

46

PB9

Not connected

47

VSS_3

S

48

VDD_3

S

Table 2.

I/O assignment (continued)

LQFP48

Pin name

Type

I/O assignment

MC using

I

SHUNT M AX

0.53

R1

R2

R

+

×

2R3

R1

R3

×

+

×

()

×

3.3R1R2

×

×

–

R

SHU NT

R2

R3

×

×

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