l99dz80ep STMicroelectronics, l99dz80ep Datasheet - Page 37

• Manufacturer Part Number: l99dz80ep
• Description: Door Actuator Driver
• Manufacturer: STMicroelectronics

L99DZ80EP
Table 25.
1. Only the half-bridge (low and high-side), in which one MOSFET is in short circuit condition is switched off. Both MOSFETs
3.16
N°
10
11
12
13
of the other half-bridge remain active and driven by DIR and PWMH
Control pins Control bits
DIR PWMH HEN SD SDS CP_LOW OV UV DS TSD GH1 GL1 GH2 GL2
X
1
0
1
1
0
0
0
H-bridge control truth table (continued)
H-bridge driver slew-rate control
The rising and falling slope of the drivers for the external high-side Power-MOS can be slew
rate controlled. If this mode is enabled the gate of the external high-side Power-MOS is
driven by a current source instead of a low-impedance output driver switch as long as the
drain-source voltage over this Power-MOS is below the switch threshold. The current is
programmed using the bits SLEW<4:0>, which represent a binary number. This number is
multiplied by the minimum current step. This minimum current step is the maximum source-
/sink-current (I
slew rate control and the output is driven by the low-impedance output driver switch.
1
1
1
1
X
1
1
1
X
0
1
1
GHxrmax /
0
0
0
0
I
Failure bits
GHxfmax
0
0
0
0
Doc ID 18260 Rev 4
0
0
0
0
) divided by 31. Programming SLEW<4:0> to 0 disables the
0
0
0
0
0
0
0
0
H
H
H
L
Output pin
L
L
L
L
H
H
L
L
H Bridge H1/L2 on
L
L
L
Slow-decay mode HS1 and HS2
on
Slow-decay mode HS2 on
Slow-decay mode HS1 on
Application information
Comment
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