ST VNN7NV04, VNS7NV04, VND7NV04, VND7NV04-1 User Manual

VNN7NV04, VNS7NV04 VND7NV04, VND7NV04-1

OMNIFET II fully autoprotected Power MOSFET

Features

Type

RDS(on)

Ilim

Vclamp

VNN7NV04

 

 

 

VNS7NV04

60 mΩ

6 A

40 V

VND7NV04

 

 

 

VND7NV04-1

 

 

 

 

 

 

 

Linear current limitation

Thermal shutdown

Short circuit protection

Integrated clamp

Low current drawn from input pin

Diagnostic feedback through input pin

ESD protection

Direct access to the gate of the Power MOSFET (analog driving)

Compatible with standard Power MOSFET in compliance with the 2002/95/EC European Directive

2

 

3

1

2

SO-8

SOT-223

3

3

2

 

1

1

TO252 (DPAK)

TO251 (IPAK)

Description

The VNN7NV04, VNS7NV04, VND7NV04 VND7NV04-1, are monolithic devices designed in STMicroelectronics VIPower M0-3 Technology, intended for replacement of standard Power MOSFETs from DC up to 50 kHz applications. Built in thermal shutdown, linear current limitation and overvoltage clamp protect the chip in harsh environments.

Fault feedback can be detected by monitoring the voltage at the input pin.

Table 1.

Device summary

 

 

 

Package

 

 

Order codes

 

 

 

 

 

 

 

Tube

Tube (lead-free)

Tape and reel

Tape and reel (lead-free)

 

 

 

 

 

 

 

 

SOT-223

 

VNN7NV04

-

VNN7NV0413TR

-

 

 

 

 

 

 

SO-8

 

VNS7NV04

-

VNS7NV0413TR

-

 

 

 

 

 

 

TO-252

 

VND7NV04

VND7NV04-E

VND7NV0413TR

VND7NV04TR-E

 

 

 

 

 

 

TO-251

 

VND7NV04-1

VND7NV04-1-E

-

-

 

 

 

 

 

September 2010

Doc ID 7383 Rev 3

1/37

 

 

 

 

 

 

www.st.com

Contents

VNN7NV04, VNS7NV04, VND7NV04, VND7NV04-1

 

 

Contents

1

Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 6

2

Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 7

 

2.1

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7

 

2.2

Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8

 

2.3

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8

3

Protection features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10

 

3.1

Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13

 

3.2

SO-8 maximum demagnetization energy . . . . . . . . . . . . . . . . . . . . . . . . .

17

 

3.3

DPAK maximum demagnetization energy . . . . . . . . . . . . . . . . . . . . . . . .

18

 

3.4

SOT-223 maximum demagnetization energy . . . . . . . . . . . . . . . . . . . . . .

19

4

Package and PCB thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20

 

4.1

SO-8 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20

 

4.2

SOT-223 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22

 

4.3

DPAK thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24

5

Package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27

 

5.1

TO-251 (IPAK) mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27

 

5.2

TO-252 (DPAK) mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

28

 

5.3

SOT-223 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

29

 

5.4

SO-8 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30

 

5.5

SOT-223 packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32

 

5.6

SO-8 packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

33

 

5.7

DPAK packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

34

 

5.8

IPAK packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

35

6

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36

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List of tables

 

 

List of tables

Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 5. SO-8 thermal parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Table 6. SOT-223 thermal parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Table 7. DPAK thermal parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Table 8. TO-251 (IPAK) mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Table 9. TO-252 (DPAK) mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Table 10. SOT-223 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Table 11. SO-8 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Table 12. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

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List of figures

VNN7NV04, VNS7NV04, VND7NV04, VND7NV04-1

 

 

List of figures

Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 2. Configuration diagram (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 3. Current and voltage conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 4. Switching time test circuit for resistive load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 5. Test circuit for diode recovery times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 6. Unclamped inductive load test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 7. Input charge test circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 8. Unclamped inductive waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 9. Derating curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Figure 10. Transconductance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Figure 11. Static drain-source on resistance vs input voltage (part 1/2) . . . . . . . . . . . . . . . . . . . . . . . 13 Figure 12. Static drain-source on resistance vs input voltage (part 2/2) . . . . . . . . . . . . . . . . . . . . . . . 13 Figure 13. Source-drain diode forward characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Figure 14. Static drain source on resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Figure 15. Turn-on current slope (part 1/2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 16. Turn-on current slope (part 2/2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 17. Transfer characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 18. Static drain-source on resistance vs Id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 19. Input voltage vs input charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 20. Turn-off drain source voltage slope (part 1/2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 21. Turn-off drain source voltage slope (part 2/2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Figure 22. Capacitance variations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Figure 23. Output characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Figure 24. Normalized on resistance vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Figure 25. Switching time resistive load (part 1/2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Figure 26. Switching time resistive load (part 2/2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Figure 27. Normalized input threshold voltage vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 28. Normalized current limit vs junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 29. Step response current limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 30. SO-8 maximum turn-off current versus load inductance. . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 31. SO-8 demagnetization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 32. DPAK maximum turn-off current versus load inductance . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Figure 33. DPAK demagnetization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Figure 34. SOT-223 maximum turn-off current versus load inductance . . . . . . . . . . . . . . . . . . . . . . . 19 Figure 35. SOT-223 demagnetization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Figure 36. SO-8 PC board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 37. Rthj-amb vs PCB copper area in open box free air condition . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 38. SO-8 thermal impedance junction ambient single pulse. . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Figure 39. Thermal fitting model of an OMNIFET II in SO-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Figure 40. SOT-223 PC board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Figure 41. Rthj-amb vs PCB copper area in open box free air condition . . . . . . . . . . . . . . . . . . . . . . . 22 Figure 42. SOT-223 thermal impedance junction ambient single pulse. . . . . . . . . . . . . . . . . . . . . . . . 23 Figure 43. Thermal fitting model of an OMNIFET II in SOT-223 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Figure 44. DPAK PC board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 45. Rthj-amb vs PCB copper area in open box free air condition . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 46. DPAK thermal impedance junction ambient single pulse . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Figure 47. Thermal fitting model of an OMNIFET II in DPAK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Figure 48. TO-251 (IPAK) package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

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Figure 49. TO-252 (DPAK) package dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Figure 50. SOT-223 package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Figure 51. SO-8 package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Figure 52. SOT-223 tape and reel shipment (suffix “TR”) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Figure 53. SO-8 tube shipment (no suffix) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Figure 54. SO-8 tape and reel shipment (suffix “TR”) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Figure 55. DPAK footprint and tube shipment (no suffix). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Figure 56. DPAK tape and reel shipment (suffix “TR”) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Figure 57. IPAK tube shipment (no suffix) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

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Block diagram and pin description

VNN7NV04, VNS7NV04, VND7NV04, VND7NV04-1

 

 

1 Block diagram and pin description

Figure 1.

 

Block diagram

 

 

 

 

 

DRAIN

 

 

 

 

2

 

 

 

 

Overvoltage

 

 

 

 

Clamp

 

INPUT

 

Gate

 

 

 

1

 

 

 

Control

 

 

 

 

 

 

 

 

 

Linear

 

 

 

Over

Current

 

 

 

Limiter

 

 

 

Temperature

 

 

 

 

 

3

 

 

 

 

SOURCE

FC01000

 

 

 

 

Figure 2. Configuration diagram (top view)

SO-8 Package(1)

SOURCE

1

8

DRAIN

SOURCE

 

 

DRAIN

SOURCE

 

 

4

5

DRAIN

 

 

INPUT

DRAIN

 

 

 

 

 

 

1. For the pins configuration related to SOT-223, DPAK, IPAK see outlines at page 1.

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Electrical specifications

 

 

2 Electrical specifications

Figure 3. Current and voltage conventions

ID

VDS

DRAIN

IIN RIN

INPUT

SOURCE

VIN

2.1Absolute maximum ratings

Table 2.

Absolute maximum ratings

 

 

 

 

 

Symbol

Parameter

 

 

Value

 

Unit

 

 

 

 

SOT-223

 

SO-8

DPAK/IPAK

 

 

 

 

 

 

 

 

 

 

 

VDS

Drain-source voltage (VIN=0 V)

 

Internally clamped

V

VIN

Input voltage

 

Internally clamped

V

IIN

Input current

 

+/-20

 

mA

RIN MIN

Minimum input series impedance

 

150

 

Ω

ID

Drain current

 

Internally limited

A

IR

Reverse DC output current

 

-10.5

 

A

VESD1

Electrostatic discharge (R=1.5 KΩ,

 

4000

 

V

C=100 pF)

 

 

VESD2

Electrostatic discharge on output pin

 

16500

 

V

only (R=330 Ω, C=150 pF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ptot

Total dissipation at Tc=25 °C

7

 

4.6

60

W

 

Maximum switching energy

 

 

 

 

 

EMAX

(L=0.7 mH; RL=0 Ω; Vbat=13.5 V;

40

 

 

40

mJ

 

Tjstart=150 ºC; IL=9 A)

 

 

 

 

 

 

Maximum switching energy

 

 

 

 

 

EMAX

(L=0.6 mH; RL=0 Ω; Vbat=13.5 V;

 

 

37

 

mJ

 

Tjstart=150 ºC; IL=9 A)

 

 

 

 

 

Tj

Operating junction temperature

 

Internally limited

°C

Tc

Case operating temperature

 

Internally limited

°C

Tstg

Storage temperature

 

 

-55 to 150

 

°C

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Electrical specifications

VNN7NV04, VNS7NV04, VND7NV04, VND7NV04-1

 

 

2.2Thermal data

Table 3.

Thermal data

 

 

 

 

 

 

Symbol

Parameter

 

Value

 

 

Unit

 

 

 

 

 

SOT-223

SO-8

 

DPAK

IPAK

 

 

 

 

 

 

 

 

 

 

 

 

Rthj-case

Thermal resistance junction-case max

18

 

 

2.1

2.1

°C/W

Rthj-lead

Thermal resistance junction-lead max

 

27

 

 

 

°C/W

Rthj-amb

Thermal resistance junction-ambient max

96(1)

90(1)

 

65(1)

102

°C/W

1.When mounted on a standard single-sided FR4 board with 0.5 mm2 of Cu (at least 35 µm thick) connected to all DRAIN pins.

2.3Electrical characteristics

-40 °C < Tj < 150 °C, unless otherwise specified.

Table 4.

Electrical characteristics

 

 

 

 

 

 

Symbol

Parameter

 

 

 

Test conditions

Min

Typ

Max

Unit

 

 

 

 

 

 

 

 

 

 

 

 

Off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VCLAMP

Drain-source clamp

VIN=0 V; ID=3.5 A

40

45

55

V

voltage

VCLTH

Drain-source clamp

VIN=0 V; ID=2 mA

36

 

 

V

threshold voltage

 

 

VINTH

Input threshold voltage

VDS=VIN; ID=1 mA

0.5

 

2.5

V

I

ISS

Supply current from input

V

DS

=0 V; V

=5 V

 

100

150

µA

 

 

pin

 

 

IN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VINCL

Input-source clamp

IIN=1 mA

 

6

6.8

8

V

voltage

IIN=-1 mA

 

-1.0

 

-0.3

 

 

 

 

 

 

IDSS

Zero input voltage drain

VDS=13 V; VIN=0 V; Tj=25 °C

 

 

30

µA

current (VIN=0 V)

V

DS

=25 V; V =0 V

 

 

75

 

 

 

 

 

 

IN

 

 

 

 

On

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RDS(on)

Static drain-source on

VIN=5 V; ID=3.5 A; Tj=25 °C

 

 

60

resistance

VIN=5 V; ID=3.5 A

 

 

120

 

 

 

 

 

 

Dynamic (Tj=25 °C, unless otherwise specified)

 

 

 

 

 

g

 

(1)

Forward

V

 

=13 V; I =3.5 A

 

9

 

S

 

fs

transconductance

 

DD

D

 

 

 

 

 

 

 

 

 

 

 

COSS

Output capacitance

VDS=13 V; f=1 MHz; VIN=0 V

 

220

 

pF

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Electrical specifications

 

 

 

 

 

 

 

Table 4.

Electrical characteristics (continued)

 

 

 

 

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

 

 

 

 

 

 

 

Switching (Tj=25 °C, unless otherwise specified)

 

 

 

 

td(on)

Turn-on delay time

 

 

100

300

ns

 

 

VDD=15 V; ID=3.5 A

 

 

 

 

tr

Rise time

 

470

1500

ns

Vgen=5 V; Rgen=RIN MIN=150 Ω

 

td(off)

Turn-off delay time

 

500

1500

ns

(see figure Figure 4.)

 

tf

Fall time

 

 

350

1000

ns

td(on)

Turn-on delay time

 

 

0.75

2.3

µs

 

 

VDD=15 V; ID=3.5 A

 

 

 

 

tr

Rise time

 

4.6

14.0

µs

Vgen=5 V; Rgen=2.2 KΩ

 

td(off)

Turn-off delay time

 

5.4

16.0

µs

(see figure Figure 4.)

 

tf

Fall time

 

 

3.6

11.0

µs

(dI/dt)on

Turn-on current slope

VDD=15 V; ID=3.5 A

 

6.5

 

A/µs

Vgen=5 V; Rgen=RIN MIN=150 Ω

 

 

 

 

 

 

 

 

Qi

Total input charge

VDD=12 V; ID=3.5 A; VIN=5 V

 

18

 

nC

Igen=2.13 mA (see figure Figure 7.)

 

 

 

 

 

 

 

 

Source drain diode (Tj=25 °C, unless otherwise specified)

 

 

 

 

(1)

Forward on voltage

ISD=3.5 A; VIN=0 V

 

0.8

 

V

VSD

 

 

trr

Reverse recovery time

ISD=3.5 A; dI/dt=20 A/µs

 

220

 

ns

Qrr

Reverse recovery charge

VDD=30 V; L=200 µH

 

0.28

 

µC

 

 

(see test circuit, figure Figure 5.)

 

 

 

 

IRRM

Reverse recovery current

 

2.5

 

A

Protections (-40 °C < Tj < 150 °C, unless otherwise specified)

 

 

 

 

Ilim

Drain current limit

VIN=5 V; VDS=13 V

6

9

12

A

tdlim

Step response current

VIN=5 V; VDS=13 V

 

4.0

 

µs

limit

 

 

Tjsh

Over temperature

 

150

175

200

°C

shutdown

 

Tjrs

Over temperature reset

 

135

 

 

°C

Igf

Fault sink current

VIN=5 V; VDS=13 V; Tj=Tjsh

 

15

 

mA

 

Single pulse avalanche

starting Tj=25 °C; VDD=24 V

 

 

 

 

Eas

VIN=5 V Rgen=RIN MIN=150 Ω; L=24 mH

200

 

 

mJ

energy

 

 

 

 

(see figures Figure 6. & Figure 8.)

 

 

 

 

 

 

 

 

 

 

 

1. Pulsed: Pulse duration = 300 µs, duty cycle 1.5 %

 

 

 

 

Doc ID 7383 Rev 3

9/37

Protection features

VNN7NV04, VNS7NV04, VND7NV04, VND7NV04-1

 

 

3 Protection features

During normal operation, the input pin is electrically connected to the gate of the internal Power MOSFET through a low impedance path.

The device then behaves like a standard Power MOSFET and can be used as a switch from DC up to 50 kHz. The only difference from the user’s standpoint is that a small DC current IISS (typ. 100µA) flows into the input pin in order to supply the internal circuitry.

The device integrates:

Overvoltage clamp protection: internally set at 45 V, along with the rugged avalanche characteristics of the Power MOSFET stage give this device unrivalled ruggedness and energy handling capability. This feature is mainly important when driving inductive loads.

Linear current limiter circuit: limits the drain current ID to Ilim whatever the input pin voltages. When the current limiter is active, the device operates in the linear region, so power dissipation may exceed the capability of the heatsink. Both case and junction temperatures increase, and if this phase lasts long enough, junction temperature may reach the over temperature threshold Tjsh.

Over temperature and short circuit protection: these are based on sensing the chip temperature and are not dependent on the input voltage. The location of the sensing element on the chip in the power stage area ensures fast, accurate detection of the junction temperature. Over temperature cutout occurs in the range 150 to 190 °C, a typical value being 170 °C. The device is automatically restarted when the chip temperature falls of about 15 °C below shutdown temperature.

Status feedback: in the case of an over temperature fault condition (Tj > Tjsh), the device tries to sink a diagnostic current Igf through the input pin in order to indicate fault condition. If driven from a low impedance source, this current may be used in order to warn the control circuit of a device shutdown. If the drive impedance is high enough so

that the input pin driver is not able to supply the current Igf, the input pin will fall to 0 V. This will not however affect the device operation: no requirement is put on the current capability of the input pin driver except to be able to supply the normal operation drive current IISS.

Additional features of this device are ESD protection according to the Human Body model and the ability to be driven from a TTL logic circuit.

10/37

Doc ID 7383 Rev 3

VNN7NV04, VNS7NV04, VND7NV04, VND7NV04-1

Protection features

 

 

Figure 4. Switching time test circuit for resistive load

 

ID

 

 

 

90%

 

tr

10%

tf

td(on)

 

t

 

t

Vgen

 

d(off)

 

 

 

 

t

Figure 5. Test circuit for diode recovery times

 

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I

OMNIFET

 

 

 

 

 

 

FAST

 

 

 

 

 

 

 

 

 

L=100uH

 

 

 

 

 

 

 

 

 

 

 

 

DIODE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S

 

 

B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

150Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rgen

 

 

 

 

 

 

 

 

 

VDD

 

 

 

 

 

 

 

Vgen

 

 

 

 

 

 

 

 

 

I

OMNIFET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8.5 Ω

Doc ID 7383 Rev 3

11/37

ST VNN7NV04, VNS7NV04, VND7NV04, VND7NV04-1 User Manual

Protection features

VNN7NV04, VNS7NV04, VND7NV04, VND7NV04-1

 

 

Figure 6. Unclamped inductive load test

Figure 7. Input charge test circuit

circuits

 

VIN

PW

VIN

RGEN

Figure 8. Unclamped inductive waveforms

12/37

Doc ID 7383 Rev 3

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