L9341V Ver la hoja de datos (PDF) - STMicroelectronics
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Fabricante
L9341V Datasheet PDF : 10 Pages
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L9341
Figure 7: Diagnostic Information from QLSD to Microcontroller.
Bit Nr.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Name
F11
F12
F21
F22
F31
F32
F41
F42
RES1
RES2
TSDF
C1
C2
C3
C4
1
Contents
COMP1 State at Positive Edge of PWM1 (0: Vout1 > Vflyth; 1: Vout1 < Vflyth)
COMP2 State at Negative Edge of PWM1 (1: Vout1 > Voffth; 0 : Vout1 < Vofth)
COMP1 State at Positive Edge of PWM2 (0: Vout2 > Vflyth; 1: Vout2 < Vflyth)
COMP2 State at Negative Edge of PWM2 (1: Vout2 > Vofth; 0 : Vout2 < Vofth)
COMP1 State at Positive Edge of PWM3 (0: Vout3 > Vflyth; 1: Vout3 < Vflyth)
COMP2 State at Negative Edge of PWM3 (1: Vout3 > Voffth; 0 : Vout3 < Vofth)
COMP1 State at Positive Edge of PWM4 (0: Vout4 > Vflyth; 1: Vout4 < Vflyth)
COMP2 State at Negative Edge of PWM4 (1: Vout4 > Voffth; 0 : Vout4 < Vofth)
Logic State of RES1 Input (0: RES1 = L ; 1: RES1 = H)
Logic State of RES2 Input (0: RES2 = L ; 1: RES2 = H)
Thermal Diagnostic Flag ( 0: Overtemperature ; 1:Normal )
Current at Negative Edge of PWM1 ( 0: Iout > Ioutl ; 1: Iout < Ioutl)
Current at Negative Edge of PWM2 ( 0: Iout > Ioutl ; 1: Iout < Ioutl)
Current at Negative Edge of PWM3 ( 0: Iout > Ioutl ; 1: Iout < Ioutl)
Current at Negative Edge of PWM4 ( 0: Iout > Ioutl ; 1: Iout < Ioutl)
Framing Information (always 1)
Figure 8.
PWM
PWM
ID
V OUT
tC
t dPO
tV
t
PWMON
min
Sample point COMP2
Sample point COMP1
FFigig. .A1
Note:
For safty diagnostic take notice of the following conditions:
tPWMON ≥ tdPOMAX + tC + tV (see Fig. A)
tPWMOFF ≥ tdPOMAX + tV (see Fig. B)
tC
=
ID
SOCMIN
tV
=
Voutfmax
SOVMIN
V OUT
t dPO
tV
t
PWMOFF
min
Sample point COMP1
Sample point COMP2
FFigig..B2
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