Quad intelligent power low side switch
Features
■ Quad power low side driver with 3 A output
current capability
■ Low R
@ T
= 25 °C
j
■ Internal output clamping structures with
V
= 50 V for fast inductive load current re
FB
circulation
■ Limited output voltage slew rate for low EMI
■ Protected µP compatible enable and input
■ Wide operating supply voltage range 4.5 V to
32 V
■ Real time diagnostic functions:
– Output shorted to GND
– Output shorted to V
– Open load detection in ON and OFF
condition
– Overtemperature detection
■ Device protection functions:
– Overload disable
– Selective thermal shutdown
– Signal- and Power-Ground-loss shutdown
Table 1. Device summary
typically 200 mΩ and 300 mΩ
DSON
S
L9332
PowerSO-20
Die
Description
The L9332 is a monolithic integrated quad low
side driver realized in an advanced Multipower
BCD mixed technology. The device is intended to
drive valves in automotive environment.
The inputs are µP compatible. Particular care has
been taken to protect the device against failures,
to avoid electromagnetic interferences and to offer
extensive real time diagnostic.
Order code Package Packing
(1)
L9332
L9332-DIE1 Die –
1. Only for evaluation.
March 2008 Rev 2 1/17
PowerSO-20 Tube
www.st.com
1
Contents L9332
Contents
1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Pad description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.3 ESD protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.5 Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5 Circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2/17
L9332 List of tables
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. Pad coordinates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 5. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 6. ESD protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 7. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 8. Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 9. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3/17
List of figures L9332
List of figures
Figure 1. Block circuit diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Pad position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4. t
Figure 5. Output slope (resistive load for testing) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 6. Timing (t
Figure 7. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 8. PowerSO-20 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 15
clamping time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
EO
, t
DOL
). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
DIOU
4/17
L9332 Block diagram
1 Block diagram
1.1 Block diagram
Figure 1. Block circuit diagram
IN1
D1
EN
IN4
D4
IN2
D2
IN3
D3
Output Control
Diagnostic
Control
R
QS
Channel 1
Delay
Time
Channel 4
Channel 2
Channel 3
OUT1
VS
52V
OUT4
Overtemp
Overload
Openload
OUT2
OUT3
05UG32_25A
GND
5/17
Pin description L9332
2 Pin description
Figure 2. Pin connection (top view)
Heat sink connected to pins 1, 10, 11, 20
PGND 1
OUT1 2
D1
IN4 4
VS 5
NC
IN3 7
D2 8
OUT2
PGND 10
05UG32_26
3
6
9
20 PGND
19
OUT4
D418
IN117
16
EN
GND15
IN214
13
D3
OUT312
PGND11
PowerSO-20 package (only for engineering samples)
Table 2. Pin description
Pin #. Pin name Function
1 GND Power ground
2 Out1 Output 1 (3 A)
3 D1 Diagnostic 1
4 IN4 Input 4
5 VS Supply voltage
6 NC Not connected
7 IN3 Input 3
8 D2 Diagnostic 2
9 Out2 Output 2 (3 A)
10 GND Power ground
11 GND Power ground
12 Out3 Output 3 (3 A)
13 D3 Diagnostic 3
14 IN2 Input 2
15 GND Signal ground
16 EN Common enable
17 IN1 Input 1
18 D4 Diagnostic 4
19 Out4 Output 4 (3 A)
20 GND Power ground
6/17
L9332 Pad description
3 Pad description
Figure 3. Pad position
OUT4 OUT3
PG4
PG1
OUT1
Table 3. Pad coordinates
D4 IN1 EN
D1
IN4 VS IN3
GND
D3
IN2
D2
OUT2
Pin # Pad name Description Size X Y
1 PG1 Power ground 510*150 -136 1846
2 Out1 Output 1 (3 A) 510*150 -1219 1152
3 D1 Diagnostic 1 150 *150 -1093 662
4 IN4 Input 4 150 *150 -1093 452
5 VS Supply voltage 150 *150 -1093 242
PG3
PG2
7 IN3 Input 3 150 *150 -1093 -446
8 D2 Diagnostic 2 150 *150 -1093 -656
9 Out2 Output 2 (3 A) 510 *150 -1219 -1148
10 PG2 Power ground 510 *150 -138 -1842
11 PG3 Power ground 430 *150 624 -1842
12 Out3 Output 3 (3 A) 430 *150 1195 -1064
13 D3 Diagnostic 3 150 *150 1181 -557
14 IN2 Input 2 150 *150 1181 -347
15 GND Signal ground 150 *150 1181 -137
16 EN Common enable 150 *150 1181 156
17 IN1 Input 1 150 *150 1181 365
18 D4 Diagnostic 4 150 *150 1181 575
19 Out4 Output 4 (3 A) 430 *150 1196 1067
20 PG4 Power ground 430*150 624 1846
7/17
Electrical specifications L9332
4 Electrical specifications
4.1 Thermal data
Table 4. Thermal data
Symbol Parameter Value Unit
R
TH(j-c)
Thermal resistance junction to case for Power SO-20 3 °C/W
4.2 Absolute maximum ratings
Table 5. Absolute maximum ratings
Symbol Parameter Conditions Value Unit
DC supply voltage -0.3 to 32 V
S
Supply voltage pulse (duration <200 ms)
SP
/dt⎪ Supply voltage slope 10
S
Input voltage ⎪I⎪ 10 mA -1.5 to 6 V
Diagnostic DC output voltage ⎪I⎪ 50 mA -0.3 to 16 V
D
DC output voltage -0.3 to 45 V
DC output current out 3 A
O
Reverse output current -3 A
Switch-off energy for inductive loads
GND potential difference 0.3 V
GND
Junction temperature
j
Storage temperature -40 to 175 °C
stg
⎪dV
V
V
E
E
ΔV
V
V
IN, EN
V
ODC
I
I
OR
O1, 2
O3, 4
T
T
-0.3 to 45 V
V/µs
tEO = 250 µs 50 mJ
T = 5ms 30 mJ
Σt
≤ 4800 h -40 to 145 °C
≤ 1200 h 145 to 160 °C
Σt
≤ 160 h 160 to 170 °C
Σt
≤ 50 h 170 to 175 °C
Σt
Note: For diagnostic output (Dx Pins), maximum supply voltage during Latch-up = 20V
4.3 ESD protection
Table 6. ESD protection
Symbol Parameter Test conditions Value Unit
V
O
V
s, IN EN D
Note: Tested according to JEDEC (Norm: JESD22-A114C.01).
8/17
Outputs test voltage Versus GND + PG shorted 3.75 kV
All other pins Versus GND 2 kV
L9332 Electrical specifications
4.4 Electrical characteristics
VS = 4.5 to 32 V; -40 °C ≤ Tj1 ≤ 175 °C, unless other-wise specified.
Function is guaranteed until thermal shut down threshold;
Table 7. Electrical characteristics
Values T
j1
Symbol Parameter Test conditions
Min. Typ. Max.
Supply
V
I
VS
RES
DC supply current off 5 15 mA
Reset Voltage 1.5 4.5 V
Outputs Out 1 - 4
V
R
DSON 1, 2
R
DSON 3, 4
I
OLE
Z-diode clamping voltage I
Z
Output on resistance
Output leakage
≥ 200 mA 45 60 V
OCL
= 25 °C
T
j
= 150 °C
T
j
= 175 °C
T
j
Tj = 25 °C
= 150 °C
T
j
Tj = 175 °C
= 140 °C
T
j
V
= 20 V
out
-40 °C < T
= 20 V
V
out
= 140 °C
T
j
= 32 V; V
V
S
= 140 °C
T
j
= 8 V; V
V
S
-40 °C < T
= 8 V; V
V
S
≤ 175 °C
j
= 4 V
out
= 4 V
out
≤ 175 °C
j
= 4 V
out
200
300
-50 -5 µA
-5 2.5 µA
300
500
600
450
750
900
3µA
36 µA
25 µA
S Output slope Io = 1 A; Figure 5 0.5 4 V/µs
Unit
mΩ
mΩ
Inputs IN1-4, EN
V
IN,EN L
V
IN,EN H
V
EN,IN hys
I
IN
I
EN
Logic input/enable low voltage 1.0 V
Logic input/enable high voltage IN, EN 2.0 V
Logic input hysteresis 50 100 mV
Input sink current
Enable sink current 5 20 40 µA
VIN > 1 V
(1)
52040µA
9/17
Electrical specifications L9332
Table 7. Electrical characteristics (continued)
Symbol Parameter Test conditions
Protection and diagnostic functions
V
OUV
V
OUV hys
I
OUC
I
OOC 1, 2, 3, 4
T
SD
T
sd-hys
V
PGL
V
SGL
Output open load voltage
threshold
Output open load voltage
hysteresis
Output open load current
threshold
VEN = VIN = 2 V;
= 6.5 to 16 V
V
S
Over load current threshold 3 8 A
Thermal shut down 185 205 225 °C
TSD hysteresis 20 K
Power-GND-loss threshold 1 2.5 4 V
Signal-GND-loss threshold 0.1 0.6 V
Diagnostic outputs D1 - D4
Diagnostic output low
voltage
≤ 2mA 1.0 V
I
D
Output resistor 50 500 Ω
T
= 140 °C
j
Diagnostic output
leakage current
VD = 14 V
-40 °C < T
≤ 175 °C
j
R
V
I
DL
Don
DLE
VD = 14 V
Values T
j1
Min. Typ. Max.
0.525 x
V
S
0.55 x
V
S
0.575 x
V
S
10 250 mV
30 80 140 mA
0.1 2 µA
10 µA
Unit
V
I
DCL
Diagnostic output
current limitation
Timing
t
ON
t
OFF
Output delay on time
Output delay off time Figure 5 10 50 µs
(2)
Figure 5 125µs
< 150 °C 10 30 µs
Delta off on time (channel 1 +2)
t
off-ton
> 150 °C 20 40 µs
Delta off on time (channel 3 +4) -40 °C < T
t
D
1. Open pins (EN, IN) are detected as low
= 9 to 16V ∧ I
2. V
S
Diagnostic delay time
≤ IO ≤ I
OUC
OOC
(2)
Figure 5 & 6 450µs
10/17
22850mA
≤ 175 °C 10 30 µs
j
L9332 Electrical specifications
4.5 Diagnostic
Table 8. Diagnostic
Conditions EN IN OUT DIAG. Filter Reset
LXoffL
Normal function
HLoffL
HHonH
Open load off V
Open load on I
Overtemperature T
Over load I
< 0.55 xV
Otyp
< 30 mA H H on L no
Omin
< 205 °C X X off L t
jtyp
> 3 A H H off L t
Omin
SGND or PGND loss channel off
S
L
H
X
L
X
L
L
H
off H no
off H t
SGND or PGND loss channel on H H off L t
D
D
D
D
IN=low
IN= low
IN=low
11/17
Circuit description L9332
5 Circuit description
The L9332 is a quad low side driver for inductive loads like valves in automotive
environment. The internal pull down current sources at the ENable and INput pins assure in
case of open input conditions that the device is switched off. An output voltage slope
limitation for du/dt is implemented to reduce the EMI. This is valid up to the clamping voltage
V
. This active flyback voltage limitation clamps the output voltage during the flyback phase.
Z
It is alowed to connect two power stages from one device in parallel if external free wheeling
diodes are used in the application. For the R
The nominal current is 70% of the sum of the nominal currents of the used channels.
calculation the parallel resistivity is expected.
on
Each driver is protected against short circuit at V
circuit condition the output will be disabled after a short delay time t
for T
> 175°C of the output will be reset if the junction temperature decreases about 20 °C
J
< 32 V and thermal overload. In short
OUT
. The thermal disable
D
below the disable threshold temperature.
The overtemperature, overload and groundloss information is stored until IN is low.
For the real time error diagnosis the voltage and the current of the outputs are compared
with internal fixed values V
for OFF and I
OUV
for ON conditions to recognize open load
OUC
in OFF and ON conditions.
The diagnostic output level in connection with different ENable and INput conditions allows
to recognize different fail states, like overtemp, short to V
, short to GND, bypass to GND
S
and disconnected load (see diagnostic table).
The diagnostic output is protected against short circuit. Exceeding the over load current
threshold I
delay switch-off time t
, the output current will be limited internally during the diagnostic overload
OOC
.
D
The device complies the ISO pulses imposed to the supply voltage of the valves without any
failures of the functionality. Therefore some diagnostic functions are internal filtered. The
diagnostic table shows the corresponding filter time for each detected signal.
Figure 4. t
V
O1-4
V
Z
clamping time
EO
V
S
t
EO
05UG32_27
12/17
t
T
L9332 Circuit description
Figure 5. Output slope (resistive load for testing)
V
IN
V
EN
5V
V
H
V
L
V
0.8V
V
0.2V
V
0.5V
OUT
V
OUV
DIAG
V
t
ON
S
S
S
t
f
D
D
t
OFF
t
r
t
D
t
t
05UG32_30
Figure 6. Timing (t
IN
V
ON
I
OOC
I
OUC
V
D
05UG32_32
DOL
t
D
, t
)
DIOU
Open Load Current
t
D
13/17
Circuit description L9332
Figure 7. Logic diagram
V
EN
V
IN
VO
U
IO
O
IO
U
V
D
05UG32_34
Normal
Open Load Current
Operation ON
Open Load Current
Latched
Over. Load
Diagnostic
Latch Reset
Normal
Open Load Current
Operation ON
Open Load Voltage
Normal
Operation OFF
Open Load Voltage
14/17
L9332 Package information
6 Package information
In order to meet environmental requirements, ST (also) offers these devices in ECOPACK®
packages. ECOPACK
®
packages are lead-free. The category of second Level Interconnect
is marked on the package and on the inner box label, in compliance with JEDEC Standard
JESD97. The maximum ratings related to soldering conditions are also marked on the inner
box label.
ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
Figure 8. PowerSO-20 mechanical data and package dimensions
DIM.
A3.60.142
a1 0.1 0.3 0.004 0.012
a2 3.3 0.130
a3 0 0.1 0.000 0.0 04
b 0.4 0.53 0.016 0.021
c 0.23 0.32 0.009 0.013
D (1) 15.8 16 0.622 0.630
D1 (2
) 9 .4 9.8 0.370 0.386
E 13.9 14.5 0.547 0.570
e 1.27 0.050
e3 11.43 0.450
E1 (1) 10.9 11.1 0.429 0.437
E2 2.9 0.114
E3 5.8 6.2 0.228 0.244
G 0 0.1 0.000 0.004
H 15.5 15.9 0.610 0.6 26
h1.10.043
L 0.8 1.1 0.031 0.043
N 8˚(typ.)
S 8˚(max. )
T 10 0.394
(1) “D and E1” do n ot include mold flash or protusion s.
- Mold flash or pr otusions shal l not exceed 0.1 5mm (0.006”)
- Critical dim ensions: “E”, “G” and “a3”.
(2)
For subcontractors, the limit is the one quoted in jedec MO-166
mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
OUTLINE AND
MECHANICAL DATA
Weight: 1.9gr
JEDEC MO-166
PowerSO-20
NN
b
DETAIL A
e3
H
D
E2
T
110
h x 45˚
R
a2
A
e
1120
E1
DETAIL B
PSO20MEC
lead
a3
Gage Plane
BOTTOM VIEW
E
DETAIL B
0.35
S
D1
L
a1
DETAIL A
c
slug
- C -
SEATING PLANE
GC
(COPLANARITY)
E3
0056635 I
15/17
Revision history L9332
7 Revision history
Table 9. Document revision history
Date Revision Changes
14-Feb-2008 1 Initial release.
28-Mar-2008 2
Updated the I
characteristics.
OLE
, I
DLE
and t
parameters on Table 7: Electrical
off-ton
16/17
L9332
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