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PDF L9904 Data sheet ( Hoja de datos )
| Número de pieza | L9904 | |
| Descripción | MOTOR BRIDGE CONTROLLER | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de L9904 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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L9904
MOTOR BRIDGE CONTROLLER
PRODUCT PREVIEW
s OPERATING SUPPLY VOLTAGE 8V TO 28V,
OVERVOLTAGE MAX. 40V
s OPERATING SUPPLY VOLTAGE 6V WITH
IMPLEMENTED STEPUP CONVERTER
s QUIESCENT CURRENT IN STANDBY MODE
LESS THAN 50µA
s ISO 9141 COMPATIBLE INTERFACE
s CHARGE PUMP FOR DRIVING A POWER
MOS AS REVERSE BATTERY PROTECTION
s PWM OPERATION FREQUENCY UP TO
30KHZ
s PROGRAMMABLE CROSS CONDUCTION
PROTECTION TIME
s OVERVOLTAGE, UNDERVOLTAGE, SHORT
CIRCUIT AND THERMAL PROTECTION
s REAL TIME DIAGNOSTIC
SO20
ORDERING NUMBER: L9904
DESCRIPTION
Control circuit for power MOS bridge driver in auto-
motive applications with ISO 9141bus interface.
BLOCK DIAGRAM
VS 10
ST 1
-
+
= VSTH
Ref erence
BIAS
fST
VC C
Charge
pump
VC C
Overvoltage
RDG
DG 2
Undervoltage
Thermal shutdown
EN 4
REN
V S1TH =
DIR 5
RDI R
VCC
R PWM
PWM 3
PR 6
Timer
V S2TH =
RCP
11 CP
13 CB1
12 GH1
14 S1
R S1
19 GL1
R GL1
18 GL2
R GL2
17 S2
R S2
15 GH2
16 CB2
RX 7
RRX
VCC
RTX
TX 8
ISO-Interface
= 0.5 • VVS
IKH
9K
20 GND
October 2002
This is preliminary information on a new product now in development. Details are subject to change without notice.
1/17
1 page  
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
RDIR Internal pull up resistance
RPWM to internal VCC 3)
VDIR = 0; VPWM = 0
DIAGNOSTIC output (DG)
VDG Output drop
IDG = 1mA
RDG
Internal pull up resistance
to internal VCC 3)
VDG = 0V
Programmable cross conduction protection 4)
NPR Threshold voltage ratio VPRH/
VPRL
RPR = 10kΩ
IPR Current capability
VPR = 2V
ISO interface, transmission input (TX)
VTXL Input low level
VTXH Input high level
VTXh Input hysteresis voltage 2)
RTX Internal pull up resistance to
internal VCC 3)
VTX = 0
ISO interface, receiver output (RX)
VRXL Output voltage high stage
TX = HIGH; IRX = 0; VK = VVS
RRX Internal pull up resistance
to internal VCC 3)
TX = HIGH;
VRX = 0V
RRXON ON resistance to ground
TX = LOW;
IRX = 1mA
tRXH Output high delay time
Fig. 1
tRXL Output low delay time
ISO interface, K-line (K)
VKL Input low level
VKH Input high level
VKh Input hysteresis voltage 2)
IKH Input current
VTX = HIGH
RKON ON resistance to ground
VTX = LOW; IK=10mA
IKSC Short circuit current
VTX = LOW
fK Transmission frequency
2. not tested in production: guaranteed by design and verified in characterization
3. Internal VVCC is 4.5V ... 5.5V
4. see page 18 for calculation of programmable cross conduction protection time
L9904
Min.
16
Typ.
50
Max.
100
Unit
kΩ
0.6 V
10 20 40 kΩ
1.8 2 2.2
-0.5 mA
1.5 V
3.5 V
1V
10 20 40 kΩ
4.5 5.5 V
5 10 20 kΩ
40 90 Ω
0.5 µs
0.5 µs
-20V
0.55 ·
VVS
-5
40
60
0.45 ·
VVS
VVS
0.025·
VVS
10
100
0.8V
25
30
130
µA
Ω
mA
kHz
5/17
5 Page 
L9904
Figure 5. Charging time of an external capacitor of 10nF connected to CP pin at VVS=8V and
VVS=13.5V
voltage [V]
30
25
20
Charging time of a 10nF load at CP
CP for VS=13.5V
CP for VS=8V
15
10
EN
5
0
0
12
time [ms]
3
4
Figure 6. Application Circuit Diagram
VBAT
Voltage
Regulator
VCC
µC
GND
D1
CS1
VS 10
CS2
ST 1
-
+
= VSTH
Reference
BIAS
f ST
VCC
Char ge
pump
VCC Overvoltage
RDG
DG 2
Undervoltage
Thermal shutdown
EN 4
REN
V S1TH =
DIR 5
PWM 3
RDIR
VCC
RPWM
PR 6
CPR RPR
Timer
RX 7
TX 8
RRX
VCC
RTX
V S2TH =
ISO-Interf ace
= 0.5 • VVS
IKH
RCP
11 CP
13 CB1
12 GH1
14 S1
RS1
19 GL1
RGL1
18 GL2
RGL2
17 S2
RS2
15 GH2
16 CB2
9K
20 GND
R
CB1
R
R
CB2
R
C1
M
K-Line
11/17
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet L9904.PDF ] | |
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