Datasheet

Device description L99H01 26/53 DocID15567 Rev 6
Table 23. Truth table
N°
Control pins Control bits Failure bits Output pins SPI DO
Comment
EN DIR PWM TS/ACT_OFF FW FW_PAS CP_LOW OV UV SC TSD WDTO GH1 GL1 GH2 GL2 GL_ER
1 0 X X X X X X X X X X X RL RL RL RL T Standby mode
2 1 X X X X X X X X X X X RL RL RL RL 1 Power-on reset
31X X 0 X 0 0 000 0 0 L L L L 0
EXT_TS = 1 (external thermal
shutdown)
4 1 X X 0 X 0 0 0 0 0 0 0 L L L L 0 EXT_TS = 0 (active Off)
5 1 X X 1 X X 1 0 0 0 0 0 RL RL RL RL 1 Charge pump voltage too low
6 1 X X 1 X X 0 0 0 0 1 0 RL RL RL RL 1 Internal thermal shutdown
7 1 X X 1 X X 0 1 0 0 0 0 L L L L 1 Overvoltage
8 1 X X 1 X X 0 0 1 0 0 0 L L L L 1 Undervoltage
91X X 1 X X 0 001 0 0 L
(1)
L
(1)
L
(1)
L
(1)
0 Short-circuit
(1)
10 1 X X 1 X X 0 0 0 0 0 1 L L L L 1 Watchdog time out
111 0 1 1 X X 0 000 0 0 L H H L 0 -
12 1 X 0 1 0 0 0 0 0 0 0 0 L H L H 0 Act. free wheeling mode LS
13 1 0 0 1 0 1 0 0 0 0 0 0 L H L L 0 Pass. free wheeling mode LS
14 1 1 0 1 0 1 0 0 0 0 0 0 L L L H 0 Pass. free wheeling mode LS
151 1 1 1 X X 0 000 0 0 H L L H 0 -
16 1 X 0 1 1 0 0 0 0 0 0 0 H L H L 0 Act. free wheeling mode HS
17 1 0 0 1 1 1 0 0 0 0 0 0 L L H L 0 Pass. free wheeling mode HS
18 1 1 0 1 1 1 0 0 0 0 0 0 H L L L 0 Pass. free wheeling mode HS
1. Only the halfbridge (low-side and high-side) where one MOSFET is in short-circuit condition is switched-off. Both MOSFET’S of the other halfbridge remain active and
driven by DIR and PWM.