FAM65V05DF1

www.onsemi.com

14

Figure 21. Under−Voltage Protection (Low−side)

Step

Description

B1

B2

B3

B4

B5

B6

B7

Control supply voltage rises above reset voltage UVCCR

Normal operation. IGBT on and carrying current

Control supply voltage falls below detection voltage UVCCD

Filtered supply voltage falls below UVCCD and IGBT turns off

Fault output activated (initial delay 2 ms, tFOD min. 50ms)

Control supply voltage rises above reset voltage UVCCR

IGBT “HI” input is followed after fault output duration and supply voltage rise

Input Signal

Output Current

Fault Output Signal

Control

Supply Voltage

RESET

Protection Circuit

State

SET

RESET

Filtering

Restart

B1

B2

B3

B4

B6

B7

High−level (no fault output)

UVCCD

UVCCR

B5

Input Signal

Output Current

Fault Output Signal

Control

Supply Voltage

RESET

Protection Circuit

State

SET

RESET

Filtering

Restart

C1

C2

C3

C4

C5

C6

UVBSR

UVBSD

Step

Description

C1

C2

C3

C4

C5

C6

Control supply voltage rises above reset voltage UVCCR

Normal operation. IGBT on and carrying current

Control supply voltage falls below detection voltage UVCCD

Filtered supply voltage falls below UVCCD and IGBT turns off

Control supply voltage rises above reset voltage UVCCR

IGBT “HI” input is followed after supply voltage rise

Figure 22. Under−Voltage Protection (High−side)

SPM is a registered trademark of Semiconductor Components Industries, LLC dba “onsemi” or its affiliates and/or subsidiaries in the United States and/or

other countries.