ST VN772K User Manual

VN772K

Quad smart power solid state relay for complete H-bridge configurations

Features

Type	RDS(on)	IOUT	VCC
VN772K	120 mΩ(1)	9 A(2)	36 V

1.Total resistance of one side in bridge configuration

2.Typical current limitation value

■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 VN772K 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.

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.

Table 1.	Device summary
	Package		Order codes
		Tube		Tape and reel
	SO-28	VN772K		VN772K13TR

July 2009

Doc ID 12535 Rev 3

1/33

www.st.com

Contents	VN772K

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

4.2Thermal 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

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VN772K	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) (VCC= 13V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 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

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List of figures	VN772K

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. ILIM vs Tcase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 14. Turn-on voltage slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 15. Turn-off voltage slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 16. On-state resistance vs Tcase. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 17. On-state resistance vs VCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 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 (Vin=5V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Figure 28. Turn-on current slope (Vin=3.5V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Figure 29. Input voltage vs input charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 30. Capacitance variations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 31. Switching time resistive load (Vin=5V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 32. Switching time resistive load (Rg=10Ohm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 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 Id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Figure 37. Static drain source on resistance vs input voltage (Id=7A) . . . . . . . . . . . . . . . . . . . . . . . . . 21

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 (Vin=3.5V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Figure 42. Turn-off drain source voltage slope (Vin=5V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 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

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VN772K	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

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Block diagrams and pins descriptions	VN772K

1 Block diagrams and pins descriptions

Figure 1. Block diagram

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VN772K				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		VCC	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

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Electrical specifications	VN772K

2 Electrical specifications

2.1Thermal data

	Table 3.	Thermal data
	Symbol	Parameter	Value Max
			(°C/W)
	Rthj-case	Thermal resistance junction-case (high side switch)	20
	Rthj-case	Thermal resistance junction-case (low side switch)	20
	Rthj-amb	Thermal resistance junction-ambient (with 6 cm2 of Cu heat sink)	See Figure 49

2.2Absolute maximum ratings

	Table 4.	Dual high side switch
	Symbol	Parameter	Value	Unit
	VCC	DC supply voltage	41	V
	-VCC	Reverse DC supply voltage	-0.3	V
	-IGND	DC reverse ground pin current	-200	mA
	IOUT	DC output current	Internally limited	A
	-IOUT	Reverse DC output current	-6	A
	IIN	DC input current	±10	mA
	ISTAT	DC status current	±10	mA
		Electrostatic discharge (human body model:
		R = 1.5KΩ; C = 100pF)
	VESD	– Input	4000	V
		– Status	4000	V
		– Output	5000	V
		– VCC	5000	V
	Ptot	Power dissipation (TC =25°C)	6	W
	Tj	Junction operating temperature	Internally limited	°C
	Tc	Case operating temperature	-40 to 150	°C
	Tstg	Storage temperature	-55 to 150	°C

Table 5.	Low side switch
Symbol	Parameter	Value	Unit
VDS	Drain source voltage (VIN = 0V)	Internally clamped	V
VIN	Input voltage	Internally clamped	V
IIN	Input current	±20	mA

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VN772K			Electrical specifications
	Table 5.	Low side switch (continued)
	Symbol	Parameter	Value	Unit
	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 = 1.5KΩ, C = 100pF)	4000	V
	VESD2	Electrostatic discharge on output pin only (human	5000	V
		body model: R = 330Ω, C = 150pF)
	Ptot	Power dissipation (TC = 25°C)	6	W
	Tj	Operating junction temperature	Internally limited	°C

2.3Electrical 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
	(1)	Operating supply
	VCC	voltage		5.5	13	36	V
	(1)	Undervoltage
	VUSD	shutdown		3	4	5.5	V
	(1)	Overvoltage
	VOV	shutdown		36	-	-	V
	RON	On-state	IOUT =2A; Tj =25°C	-	-	60	mΩ
		resistance	IOUT =2A; VCC >8V			120	mΩ
			Off-state; VCC = 13V; VIN =VOUT =0V		12	40	µA
	I (1)	Supply current	Off-state; VCC = 13V; VIN =VOUT =0V;	-
	S		Tj =25°C		12	25	µA
			On-state; VCC = 13V;		5	7	mA
	IL(off1)	Off-state output	VIN =VOUT =0V; VCC =36V; Tj = 125°C	0	-	50	µA
		current
	IL(off2)	Off-state output	VIN =0V; VOUT =3.5V	-75	-	0	µA
		current
	IL(off3)	Off-state output	VIN =VOUT =0V; VCC = 13V; Tj = 125°C	-	-	5	µA
		current
	IL(off4)	Off-state output	VIN =VOUT =0V; VCC = 13V; Tj = 25°C	-	-	3	µA
		current

1. Per device.

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Electrical specifications

VN772K

Table 7.

Switching (per each channel) (VCC= 13V)

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

td(on)

Turn-on delay time

RL =6.5Ω from VIN rising edge

-

30

-

µs

to VOUT =1.3V

td(off)

Turn-off delay time

RL =6.5Ω from VIN falling edge

-

30

-

µs

to VOUT = 11.7V

dVOUT/dt(on)

Turn-on voltage

RL =6.5Ω from VOUT = 1.3V to

-

Seerelative

-

V/µs

slope

V

= 10.4V

diagram

OUT

dVOUT/dt(off)

Turn-off voltage

RL =6.5Ω from VOUT = 11.7V to

-

Seerelative

-

V/µs

slope

V

=1.3V

diagram

OUT

Table 8.

Logic input (per each channel)

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

VIL

Input low level

-

-

1.25

V

IIL

Low level input current

VIN = 1.25V

1

-

-

µA

VIH

Input high level

3.25

-

-

V

IIH

High level input current

VIN = 3.25V

-

-

10

µA

VI(hyst)

Input hysteresis

0.5

-

-

V

voltage

VICL

Input clamp voltage

IIN = 1mA

6

6.8

8

V

IIN = -1mA

-0.7

V

Table 9.

Status pin (per each channel)

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

VSTAT

Status low output

ISTAT = 1.6 mA

-

-

0.5

V

voltage

ILSTAT

Status leakage current

Normal operation; VSTAT = 5V

-

-

10

µA

CSTAT

Status pin input

Normal operation; VSTAT = 5V

-

-

100

pF

capacitance

VSCL

Status clamp voltage

ISTAT = 1mA

6

6.8

8

V

ISTAT = -1mA

-0.7

V

Table 10.

Protections (per each channel)

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

TTSD

Shutdown temperature

150

175

200

°C

TR

Reset temperature

135

-

-

°C

Thyst

Thermal hysteresis

7

15

-

°C

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Doc ID 12535 Rev 3