7/17
L9903
t
GH1LH
t
GH2LH
Propagation delay time including
cross conduction protection time
t
CCP
Fig. 2
V
VS
= 13.5V
V
S1
= V
S2
=0
C
CBX
= 0.1µF
C
PR
= 150pF;
R
PR
= 10k;
5)
0.7 1 1.3 µs
t
GH1HL
t
GH2HL
Propagation delay time 500 ns
t
GL1LH
t
GL2LH
Propagation delay time Fig. 2
V
VS
= 13.5V
V
S1
= V
S2
=0
C
CBX
= 0.1µF
R
PR
= 10k
500 ns
t
GL1LH
t
GL2LH
Propagation delay time including
cross conduction protection time
t
CCP
Fig. 2
V
VS
= 13.5V
V
S1
= V
S2
=0
C
CBX
= 0.1µF
C
PR
= 150pF;
R
PR
= 10k;
5)
0.7 1 1.3 µs
t
GL1HL
t
GL2HL
Propagation delay time 500 ns
t
GH1r
t
GH2r
Rise time Fig. 2
V
VS
= 13.5V
V
S1
= V
S2
=0
C
CBX
= 0.1µF
C
GHX
= 4.7nF
C
GLX
= 4.7nF
R
PR
= 10k;
s
t
GH1f
t
GH2f
Fall time s
t
GL1r
t
GL2r
Rise time s
t
GL1f
t
GL2f
Fall time s
Short Circuit Detection
V
S1TH
V
S2TH
Threshold voltage 4 V
t
SCd
Detection time 5 10 15 µs
Step up converter (ST) (5.2V V
VS
< 10V)
V
STH
ST disable HIGH threshold 10 V
V
STh
ST disable threshold hysteresis
voltage
2)
12V
R
DSON
Open drain ON resistance
V
VS
= 5.2V;
I
ST
= 50mA
20
f
ST
Clock frequency 50 100 149 kHz
2. not tested in production: guaranteed by design and verified in characterization
5. tested with differed values in production but guaranteed by design and verified in characterization
Table 5.
Electrical Characteristcs
(continued)
(8V < V
VS
< 20V, V
EN
= HIGH, -40°C
T
J
150°C, unless otherwise specified. The voltages are refered to
GND and currents are assumed positive, when current flows into the pin
Symbol Parameter Test Condition Min. Typ. Max. Unit
L9903
8/17
Figure 4. Timing of the ISO-interface
Figure 5. Timing of the drivers for the external MOS regarding the inputs DIR and PWM
t
TX
V
0.3
V
VCC
0.7
V
VCC
0.3
V
VCC
t
V
K
t
t
KL
t
KH
t
Kr
t
Kf
I
K
> I
KSC
80%
20%
0.55
V
VS
0.45
V
VS
V
RX
t
RXL
t
RXH
0.3
V
VCC
0.7
V
VCC
ON
OFF
open drain
transistor at
K-pin
t
SH
9/17
L9903
Figure 6. I(V) characteristics of the K-Line for TX = HIGH and VVS=13.5V
Figure 7. Driving sequence
-20 -10 0 10 20
VK [V]
-0.5
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
IK [mA]
~
5
0k
~
5
0k
EN
DIR
PWM
braking
GH1
GL1
GH2
GL2
Note:
Before standby mode
(EN = low) a braking phase
is mandatory to discharge
the stored energy of the
motor.

L9903TR

Mfr. #:
Manufacturer:
STMicroelectronics
Description:
Motor / Motion / Ignition Controllers & Drivers Motor Bridge
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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