ST VN770K User Manual
Features
Typ e R
VN770K 220 mΩ
DS(on)
(1)
1. Total resistance of one side in bridge configuration
2. Typical current limitation value
I
OUT
9A
(2)
VCC
36 V
VN770K
Quad smart power solid state relay
for complete H-bridge configurations
■ Suited as low voltage bridge
■ Linear current limitation
■ Very low standby power dissipation
■ Short circuit protected
■ Status flag diagnostic (open drain)
■ Integrated clamping circuits
■ Undervoltage protection
■ ESD protection
Description
The VN770K is a device formed by three
monolithic chips housed in a standard SO-28
package: a double high side and two low side
switches. Both the double high side and low side
switches are made using STMicroelectronics
VIPower™ M0-3 Technology.
Table 1. Device summary
SO-28
This device is suitable to drive a DC motor in a
bridge configuration as well as to be used as a
quad switch for any low voltage application.
The dual high side switches have built-in thermal
shutdown to protect the chips from over
temperature and current limiter blocks to protect
the device from short circuit. Status output is
provided to indicate open load in off and on-state
and over temperature.
The low side switches are two OMNIFET II types
(fully auto protected Power MOSFET in
VIPower™ technology). They have built-in
thermal shutdown, linear current limitation and
overvoltage clamping. Fault feedback for thermal
intervention can be detected by monitoring the
voltage at the input pin.
Order codes
Package
Tube Tape and reel
SO-28 VN770K VN770K13TR
July 2009 Doc ID 8711 Rev 4 1/33
www.st.com
1
Contents VN770K
Contents
1 Block diagrams and pins descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Electrical characteristics for dual high side switch . . . . . . . . . . . . . . . . . . . 9
2.4 Electrical characteristics for low side switches . . . . . . . . . . . . . . . . . . . . 11
2.5 Dual high-side switch timing data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.6 Electrical characterization for dual high side switch . . . . . . . . . . . . . . . . . 16
2.7 Electrical characterization for low side switches . . . . . . . . . . . . . . . . . . . . 19
3 Application recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.1 SO-28 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.2 Thermal calculation in clockwise and anti-clockwise operation in steady
state mode 27
4.2.1 Thermal resistances definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.2.2 Thermal calculation in transient mode . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.2.3 Single pulse thermal impedance definition . . . . . . . . . . . . . . . . . . . . . . 27
4.2.4 Pulse calculation formula . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1 SO-28 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.2 SO-28 tube shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.3 Tape and reel shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2/33 Doc ID 8711 Rev 4
VN770K List of tables
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Pin definition and function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 4. Dual high side switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 5. Low side switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 6. Power outputs (per each channel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 7. Switching (per each channel) (V
Table 8. Logic input (per each channel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 9. Status pin (per each channel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 10. Protections (per each channel). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 11. Openload detection (per each channel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 12. Off-state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 13. On-state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 14. Dynamic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 15. Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 16. Source drain diode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 17. Protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 18. Truth table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 19. Thermal calculation in clockwise and anti-clockwise operation in steady state mode . . . . 27
Table 20. Thermal parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 21. SO-28 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 22. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
= 13V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
CC
Doc ID 8711 Rev 4 3/33
List of figures VN770K
List of figures
Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 2. Connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 3. Switching time waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 4. Open-load status timing (with external pull-up) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 5. Over temperature status timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 6. Off-state output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 7. Input clamp voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 8. High level input current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 9. Input high level voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 10. Input low level voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 11. Input hysteresis voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 12. Overvoltage shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 13. I
Figure 14. Turn-on voltage slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 15. Turn-off voltage slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 16. On-state resistance vs T
Figure 17. On-state resistance vs V
Figure 18. Status leakage current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 19. Status low output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 20. Openload on-state detection threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 21. Openload off-state voltage detection threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 22. Status clamp voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 23. Static drain source on resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 24. Derating curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 25. Transconductance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 26. Transfer characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 27. Turn-on current slope (V
Figure 28. Turn-on current slope (V
Figure 29. Input voltage vs input charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 30. Capacitance variations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 31. Switching time resistive load (V
Figure 32. Switching time resistive load (R
Figure 33. Output characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 34. Step response current limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 35. Source drain diode forward characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 36. Static drian source on resistance vs I
Figure 37. Static drain source on resistance vs input voltage (I
Figure 38. Static drain source on resistance vs input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 39. Normalized input threshold voltage vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 40. Normalized on resistance vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 41. Turn-off drain source voltage slope (V
Figure 42. Turn-off drain source voltage slope (V
Figure 43. Current limit vs junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 44. Application diagram bridge drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 45. Recommended motor operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 46. Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 47. SO-28 PC board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 48. Chipset configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
LIM
vs T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
case
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
case
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
CC
=5V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
in
=3.5V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
in
=5V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
in
=10Ohm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
g
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
d
=3.5V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
in
=5V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
in
=7A) . . . . . . . . . . . . . . . . . . . . . . . . . 21
d
4/33 Doc ID 8711 Rev 4
VN770K List of figures
Figure 49. Auto and mutual Rthj-amb vs PCB copper area in open box free air condition . . . . . . . . . 26
Figure 50. SO-28 HSD thermal impedance junction ambient single pulse . . . . . . . . . . . . . . . . . . . . . 28
Figure 51. SO-28 LSD thermal impedance junction ambient single pulse. . . . . . . . . . . . . . . . . . . . . . 28
Figure 52. Thermal fitting model of an H-bridge in SO-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 53. SO-28 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 54. Tube dimensions (no suffix) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 55. Tape and reel dimensions (suffix “13TR”) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Doc ID 8711 Rev 4 5/33
Block diagrams and pins descriptions VN770K
1 Block diagrams and pins descriptions
Figure 1. Block diagram
6/33 Doc ID 8711 Rev 4
VN770K Block diagrams and pins descriptions
Table 2. Pin definition and function
No Name Function
1, 3, 25, 28 DRAIN 3 Drain of switch 3 (low-side switch)
2 INPUT 3 Input of switch 3 (low-side switch)
4, 11 N.C. Not connected
5, 10, 19, 24 V
CC
Drain of switches 1 and 2 (high-side switches) and power
supply voltage
6 GND Ground of switches 1 and 2 (high-side switches)
7 INPUT 1 Input of switch 1 (high-side switches)
8 DIAGNOSTIC Diagnostic of switches 1 and 2 (high-side switches)
9 INPUT 2 Input of switch 2 (high-side switch)
12, 14, 15, 18 DRAIN 4 Drain of switch 4 (low-side switch)
13 INPUT 4 Input of switch 4 (low-side switch)
16, 17 SOURCE 4 Source of switch 4 (low-side switch)
20, 21 SOURCE 2 Source of switch 2 (high-side switch)
22, 23 SOURCE 1 Source of switch 1 (high-side switch)
26, 27 SOURCE 3 Source of switch 3 (low-side switch)
Figure 2. Connection diagram
Doc ID 8711 Rev 4 7/33
Electrical specifications VN770K
2 Electrical specifications
2.1 Thermal data
Table 3. Thermal data
Symbol Parameter
R
thj-case
R
thj-case
R
thj-amb
Thermal resistance junction-case (high side switch) 20
Thermal resistance junction-case (low side switch) 20
Thermal resistance junction-ambient (with 6 cm2 of Cu heat sink) See Figure 49
2.2 Absolute maximum ratings
Table 4. Dual high side switch
Symbol Parameter Value Unit
V
DC supply voltage 41 V
CC
-V
-I
GND
I
OUT
-I
OUT
I
I
STAT
V
ESD
Reverse DC supply voltage -0.3 V
CC
DC reverse ground pin current -200 mA
DC output current Internally limited A
Reverse DC output current -6 A
DC input current ±10 mA
IN
DC status current ±10 mA
Electrostatic discharge (human body model:
R = 1.5KΩ; C = 100pF)
– Input
– Status
– Output
CC
–V
4000
4000
5000
5000
Value Max
(°C/W)
V
V
V
V
P
T
T
Table 5. Low side switch
Power dissipation (TC =25°C) 6 W
tot
Junction operating temperature Internally limited °C
T
j
Case operating temperature -40 to 150 °C
c
Storage temperature -55 to 150 °C
stg
Symbol Parameter Value Unit
V
Drain source voltage (V
DS
Input voltage Internally clamped V
V
IN
I
Input current ±20 mA
IN
= 0V) Internally clamped V
IN
8/33 Doc ID 8711 Rev 4
VN770K Electrical specifications
Table 5. Low side switch (continued)
Symbol Parameter Value Unit
R
Minimum input series impedance 150 Ω
IN MIN
I
Drain current Internally limited A
D
Reverse DC output current -10.5 A
R
Electrostatic discharge (R = 1.5KΩ, C = 100pF) 4000 V
Electrostatic discharge on output pin only (human
body model: R = 330Ω, C = 150pF)
5000 V
V
ESD1
V
ESD2
I
P
T
T
Power dissipation (TC = 25°C) 6 W
tot
j
Operating junction temperature Internally limited °C
T
Case operating temperature Internally limited °C
c
Storage temperature -55 to 150 °C
stg
2.3 Electrical characteristics for dual high side switch
8V < VCC< 36V; -40°C < Tj < 150°C, unless otherwise specified.
Table 6. Power outputs (per each channel)
Symbol Parameter Test conditions Min Typ Max Unit
Operating supply
(1)
V
CC
voltage
Undervoltage
(1)
V
USD
V
R
I
I
L(off1)
I
L(off2)
shutdown
Overvoltage
(1)
OV
shutdown
On-state
ON
resistance
(1)
Supply current
S
Off-state output
current
Off-state output
current
=1A; Tj =25°C
I
OUT
I
=1A; VCC >8V
OUT
Off-state; VCC = 13V; VIN =V
Off-state; V
= 13V; VIN =V
CC
Tj =25°C
On-state; V
=V
V
IN
VIN =0V; V
= 13V; VIN = 5V; I
CC
=0V 0 - 50 µA
OUT
=3.5V -75 - 0 µA
OUT
OUT
OUT
=0V
=0V;
OUT
=0V
5.5 13 36 V
3 4 5.5 V
36 - - V
--
12
12
5
160
320
40
25
7
mΩ
mΩ
µA
µA
mA
I
L(off3
I
L(off4)
1. Per device.
Off-state output
)
current
Off-state output
current
VIN =V
VIN =V
=0V; VCC = 13V; Tj = 125°C - - 5 µA
OUT
=0V; VCC = 13V; Tj = 25°C - - 3 µA
OUT
Doc ID 8711 Rev 4 9/33
Electrical specifications VN770K
Table 7. Switching (per each channel) (VCC= 13V)
Symbol Parameter Test conditions Min Typ Max Unit
R
=13Ω from VIN rising edge
t
Turn-on delay time
d(on)
Turn-off delay time
Turn-on voltage
(on)
slope
Turn-off voltage
(off)
slope
dV
dV
t
d(off)
OUT
OUT
/dt
/dt
1. See relative diagram
Table 8. Logic input (per each channel)
Symbol Parameter Test conditions Min Typ Max Unit
Input low level - - 1.25 V
V
IL
Low level input current VIN = 1.25V 1 - - µA
I
IL
L
to V
R
to V
RL =13Ω from V
V
RL =13Ω from V
V
=1.3V
OUT
=13Ω from VIN falling edge
L
= 11.7V
OUT
= 1.3V to
OUT
= 11.7V to
OUT
OUT
OUT
= 10.4V
=1.3V
- 30 - µs
- 30 - µs
-
-
(1)
(1)
-V/µs
-V/µs
VIH Input high level 3.25 - - V
IIH High level input current VIN = 3.25V - - 10 µA
V
I(hyst)
V
Table 9. Status pin (per each channel)
Input hysteresis
voltage
Input clamp voltage
ICL
IIN = 1mA
IIN = -1mA
0.5 - - V
6.8
6
-0.7
8 V
V
Symbol Parameter Test conditions Min Typ Max Unit
V
STAT
I
LSTAT
C
V
Table 10. Protections (per each channel)
Status low output
voltage
I
STAT
Status leakage current Normal operation; V
Status pin input
STAT
capacitance
Status clamp voltage
SCL
Normal operation; V
I
STAT
I
STAT
= 1.6 mA - - 0.5 V
= 5V - - 10 µA
STAT
= 5V - - 100 pF
STAT
= 1mA
= -1mA
6.8
6
-0.7
8V
V
Symbol Parameter Test conditions Min Typ Max Unit
T
T
Shutdown temperature 150 175 200 °C
TSD
Reset temperature 135 - - °C
R
10/33 Doc ID 8711 Rev 4
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