ST L9380 User Manual
Features
■ Overvoltage charge pump shut off
■ For V
■ Reverse battery protection (referring to the
> 25 V
S
application circuit diagram)
■ Programmable overload protection function for
channel 1 and 2
■ Open ground protection function for channel 1
and 2
■ Constant gate charge/discharge current
Description
L9380
Triple high-side MOSFET driver
SO20
The L9380 device is a controller for three external
N-channel power MOS transistors in "High-Side
Switch" configuration.
Table 1. Device summary
Order code Package Packing
L9380 SO20 Tube
L9380-TR SO20 Tape and reel
L9380-LF
L9380-TR-LF
1. Devices in ECOPACK® packages (see Section 5: Package information on page 16).
(1)
(1)
It is intended for relays replacement in automotive
electric control units.
SO20 Tube
SO20 Tape and reel
February 2010 Doc ID 5853 Rev 3 1/18
www.st.com
1
Contents L9380
Contents
1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1 Typical characteristics curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1.1 Electromagnetic emission classification (EME) . . . . . . . . . . . . . . . . . . . 15
5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2/18 Doc ID 5853 Rev 3
L9380 List of tables
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Pins function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 5. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 6. Electromagnetic emission classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 7. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Doc ID 5853 Rev 3 3/18
List of figures L9380
List of figures
Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Pins connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Timing characteristic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 4. Drain, source input current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 5. Comparator hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 6. Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 7. Charge loading time as function of VS (Vcp = 8 V +VS) . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 8. Charge pump current as function of the charge voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 9. Ground loss protection gate discarge current for source voltage . . . . . . . . . . . . . . . . . . . . 13
Figure 10. Input current as function of the input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 11. Overvoltage shutdown of the charge pump with hysteresis . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 12. Measured circuit (The EMS of the device was verified in the below described setup) . . . . 14
Figure 13. Printed circuit board (PCB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 14. SO20 mechanical data and package dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4/18 Doc ID 5853 Rev 3
L9380 Block diagram
1 Block diagram
Figure 1. Block diagram
VS
T1
IN1
T2
IN2
IN3
VSI
VSI
VSI
VSI
DRIVER 1
VSI
DRIVER 2
DRIVER 3
ENN
ENN
ENN
CHARGE PUMP
OVERVOLTAGE
≥1
≥1
-
+
CP
≥1
-
+
CP
≥1
CP
≥1
IPR
IPR
CP
GND
D1
S1
G1
D2
S2
G2
G3
EN
VS VSI
ENN
REFERENCE
REG.
2V
I
PR
PR
D98AT390
Doc ID 5853 Rev 3 5/18
Pins description L9380
2 Pins description
Figure 2. Pins connection (top view)
Table 2. Pins function
N°
1T1
2V
4T2
5PR
Pin
name
S
Timer capacitor; the capacitor defines the time for the channel 1 shut down, after overload of
the external MOS transistor has been detected.
Supply voltage.
Timer capacitor; the capacitor defines the time for the channel 2 shut down, after overload of
the external MOS transistor has been detected.
Programming resistor for overload detetcion threshold; the resistor from this pin to ground
defines the drain pin current and the charging of the timer capacitor.
T1
VS
N.C.
T2
PR
IN3
IN2
IN1
EN G2
GND G3
2
3
4
5
6
7
8
9
10
D98AT391
20
19
18
17
16
15
14
13
12
11
Function
6 IN3 Input 3; equal to IN1.
7 IN2 Input 2; equal to IN1.
8IN1
Input 1; logic signal applied to this pin controls the driver 1; this pin features a current source
to assure defined high status when the pin is open.
9 EN Enable logic signal high on this pin enables all channels
10 GND Ground
11 G3 Gate 3 driver output; current source from CP or ground
12 G2 Gate 2 driver output; current source from CP or ground
14 S2 Source 2 sense input; monitors the source voltage.
15 S1 Source 1 sense input; monitors the source voltage.
16 G1 Gate 1 driver output; current source from CP or ground
17 D2
19 D1
Drain 2 sense input; a programmable input bias current defines the drop across the external
resistor R
; this drop fixes the overload threshold of the external MOS.
D1
Drain 1 sense input; a programmable input bias current defines the drop across the external
resistor R
; this drop fixes the overload threshold of the external MOS.
D1
Charge pump capacitor; a alternating current source at this pin charges the connected
20 CP
capacitor C
to a voltage 10V higher than VS; the charge stored in this capacitor is than used
CP
to charge all the three gates of the power MOS transistors.
3, 13, 18 NC Not connected
CP1
D1
N.C.
D2
G1
S1
S2
N.C.
6/18 Doc ID 5853 Rev 3
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