Datasheet FAN7384 Datasheet (Fairchild)

FAN7384

1

14-SOP

Half-Bridge Gate-Drive IC

FAN7384 — Half-Bridge Gate-Drive IC

July 2012

Features

 Floating Channel for Bootstrap Operation to +600V  Typically 250mA/500mA Sourcing/Sinking Current

Driving Capability for Both Channels

 Extended Allowable Negative V

Signal Propagation at VDD=VBS=15V

 Matched Propagation Delay Below 50ns  Output In-Phase with Input Signal  3.3V and 5V Input Logic Compatible  Built-in Shoot-Through Prevention Logic  Built-in Common Mode dv/dt Noise Canceling Circuit  Built-in UVLO Functions for Both Channels  Built-in Cycle-by-Cycle Shutdown Function  Built-in Soft-Off Function  Built-in Bi-Directional Fault Function  Built-in Short-Circuit Protection Function

Swing to -9.8V for

S

Applications

 Motor Inverter Driver  Normal Half-Bridge and Full-Bridge Driver  Switching Mode Power Supply

Description

The FAN7384 is a monolithic half-bridge gate-drive IC designed for high voltage, high speed driving MOSFETs and IGBTs operating up to +600V.

Fairchild’s high-voltage process and common-mode noise canceling technique provide stable operation of high-side drivers under high-dv/dt noise circumstances.

An advanced level-shift circuit allows high-side gate driver operation up to V

The UVLO circuits prevent malfunction when VDD and VBS are lower than the specified threshold voltage.

Output drivers typically source/sink 250mA/500mA, respectively, which is suitable for half-bridge and fullbridge applications in motor drive systems.

= -9.8V (typical) for VBS =15V.

S

Ordering Information

Operating

Temperature

Part Number Package

14-Lead, Small Outline Integrated Circuit (SOIC),

FAN7384MX

Note:

1. The device passed wave soldering test by JESD22A-111.

(1)

Non-JEDEC, .150 Inch Narrow Body, 225SOP

Range Packing Method

-40°C to +125°C Tape & Reel

Typical Application Diagrams

U

V

W

3-Phase Motor Controller

V

U

HO

V

S

LO

V

B

V

DD

V

SL

LIN

HIN

HO

LO

LIN

HIN

HO

LO

LIN

HIN

UU UL

VU

UL

WU WL

V

DC

V

CC

CSC

SD SD SD

FO FO FO

GND

GND GND

V

DD

V

DD

V

SL

V

S

V

B

V

SL

V

S

V

B

FAN7384 Rev.03

FAN7384

Forward

V

DD

V

SL

HIN

M

Reverse

DC Motor

Controller

PHA

PHB

LIN

FAN7384

FAULT

HO

CSC

LO

HO

V

S

CSC

V

B

LO

HIN

FO

SD

FAN7384

SHUTDOWN

R

PULLUP

GND

300K

V

DC

V

CC

V

SL

V

DD

V

B

V

S

FAN7384 Rev.02

Figure 1. 3-Phase Motor Drive Application

FAN7384 — Half-Bridge Gate-Drive IC

Figure 2. DC Motor Drive Application

Internal Block Diagram

3

CSC

V

B

HO

HS(ON/OFF)

LS(ON/OFF)

1

5

2SD

SCHMITT

TRIGGER INPUT

SHOOT-THROUGH

PREVENTION

CONTROL LOGIC

6

0.5V

PULSE

GENERATOR

NOISE

CANCELLER

UVLO

14

12

R

R S

Q

DRIVER

V

S

DRIVER

DELAY

SOFT-OFF

FAULT LOGIC

8

4

9

13

7

V

DD

LO

V

SL

FO

GND

LIN

HIN

I

SOFT

GND/V

SL

LEVEL SHIFTER

UVLO

V

DD

_UVLO

V

DD

_UVLO

ONE-SHOT

TRIGGER

ONE-SHOT

TRIGGER

FAN7384 Rev.03

FAN7384 — Half-Bridge Gate-Drive IC

Figure 3. Functional Block Diagram

Pin Configuration

FAN7384 Rev.00

CSC

FO

GND

LO

NC

FAN7384

LIN

V

DD

V

S

HO

V

B

HIN

V

SL

NC

1

2

3

4

5

6

7

14

13

12

11

10

9

8

SD

FAN7384 — Half-Bridge Gate-Drive IC

Figure 4. Pin Configuration (Top View)

Pin Definitions

Pin # Name Description

1 LIN Logic Input for low-side gate driver 2SD 3 HIN Logic Input for high-side gate driver 4V

DD

5 FO Bi-direction fault pin with open drain 6 CSC Short-circuit current detection input 7 GND Ground 8V

SL

9 LO Low-side gate driver output 10 NC Not connection 11 NC Not connection 12 V

S

13 HO High-side gate driver output 14 V

B

Shutdown control input with active low

Low-side power supply voltage

Low-side supply offset voltage

High-side floating supply offset voltage

High-side floating supply voltage

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating cond itions may affect device reliability. The absolute maximum ratings are stress ratings only. T

Symbol Parameter Min. Max. Unit

V

S

V

B

V

HO

V

DD

V

IN

V

CSC

V

FO

/dt Allowable offset voltage slew rate 50 V/ns

dV

S

(2)(3)(4)

P

D



JA

T

J

T

S

Notes:

2. Mounted on 76.2 x 114.3 x 1.6mm PCB (FR-4 glass epoxy material).

3. Refer to the following standards: JESD51-2: Integral circuits thermal test method environmental conditions - natural convection JESD51-3: Low effective thermal conductivity test board for leaded surface mount packages

4. Do not exceed P

High-side offset voltage V

S

High-side floating supply voltage V High-side floating output voltage VS-0.3 VB+0.3 V Low-side and logic-fixed supply voltage -0.3 25 V Logic input voltage (HIN, LIN, SD)-0.3V Current sense input voltage -0.3 VDD+0.3 V Fault output voltage -0.3 VDD+0.3 V

Power dissipation 1.0 W Thermal resistance, junction-to-ambient 110 C/W Junction temperature +150 °C Storage temperature -55 +150 °C

under any circumstances.

D

=25°C, unless otherwise specified.

A

VB-25 VB+0.3 V

B

-0.3 625 V

+0.3 V

DD

FAN7384 — Half-Bridge Gate-Drive IC

Recommended Operating Conditions

The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal perfor mance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings.

Symbol Parameter Condition Min. Max. Unit

V

B

V

S

V

DD

V

HO

V

LO

V

IN

V

FO

T

A

High-side floating supply voltage VS+13 VS+20 V High-side floating supply offset voltage 6-V

DD

600 V Supply voltage 13 20 V High-side output voltage VS VBV Low-side output voltage GND V Logic input voltage (HIN, LIN, SD)GND V

DD

V

V Fault output voltage -0.3 VDD+0.3 V Ambient temperature -40 +125 °C

Electrical Characteristics

V

BIAS (VDD

The VO and IO parameters are referenced to VS and GND and are applicable to the respective outputs HO and LO.

Symbol Characteristics Condition Min. Typ. Max. Unit

LOW SIDE POWER SUPPLY SECTION

I I

V

DDUV+

V

DDUV-

V

DDHYS

BOOTSTRAPPED POWER SUPPLY SECTION

V

BSUV+

V

BSUV-

V

BSHYS

I

GATE DRIVER OUTPUT SECTION

V V

V

SL

SHUTDOWN CONTROL SECTION (SD

SD

LOGIC INPUT SECTION (HIN, LIN)

V

INHYS

, VBS) = 15.0V, TA = 25C, unless otherwise specified. The VIN and IIN parameters are referenced to GND.

QDD

PDD

Quiescent VDD supply current V Operating VDD supply current f VDD supply under-voltage positive going

threshold VDD supply under-voltage negative going

threshold VDD supply under-voltage lockout

hysteresis

VBS supply under-voltage positive going threshold

VBS supply under-voltage negative going threshold

VBS supply under-voltage lockout hysteresis

I

QBS PBS

I

I V

Offset supply leakage current VB=VS=600V 10 A

LK

Quiescent VBS supply current V Operating VBS supply current f

High-level output voltage, V

OH

Low-level output voltage, V

OL

Output HIGH short-circuit pulse current VO=0V, VIN=5V with PW<10µs 200 250 mA

O+

Output LOW short-circuit pulsed current VO=15V, VIN=0V with PW<10µs 420 500 mA

O-

Allowable negative VS pin voltage for IN

S

signal propagation to H

-GND VSL-GND/GND-V

BIAS-VO

O

voltage endurability -7.0 7.0 V

SL

=0V or 5V 600 800 A

LIN

=20kHz, rms value 9 50 1300 A

LIN

V

=Sweep 10.9 11.9 12.9 V

DD

=Sweep 10.4 11.4 12.4 V

V

DD

=Sweep 0.5 V

V

DD

V

=Sweep 10.6 11.5 12.4 V

BS

=Sweep 10.1 11.0 11.9 V

V

BS

=Sweep 0.5 V

V

BS

=0V or 5V 50 90 A

HIN

=20kHz, rms value 400 600 A

HIN

IO=0mA (No Load) 100 mV IO=0mA (No Load) 100 mV

-9.8 -7.0 V

)

+ Shutdown "1" input voltage 1.2 V

- Shutdown "0" input voltage 2.5 V

V

Logic "1" input voltage 2.5 V

IH

Logic "0" input voltage 1.2 V

IL

Logic input hysteresis voltage 0.5 V

I

IN+

Logic "1" input bias current VIN=5V 101520A Logic "0" input bias current VIN=0V 2.0 A

IN-

FAN7384 — Half-Bridge Gate-Drive IC

Electrical Characteristics (Continued)

V

BIAS (VDD

The V

Symbol Characteristics Condition Min. Typ. Max. Unit

SHORT-CIRCUIT PROTECTION

V

CSCREF

I

CSCIN

I

SOFT

-V

FAULT DETECTION SECTION

V V

V

FINHYS

V V

Note:

5. These parameters guaranteed by design.

, VBS) = 15.0V, TA = 25C, unless otherwise specified. The VIN and IIN parameters are referenced to GND.

and IO parameters are referenced to GND and VS is applicable to HO and LO.

O

Short-circuit detector reference voltage 0.47 0.50 0.53 V Short-circuit input current V

CSCIN

=1V, R

=100K 51015A

CSCIN

Soft turn-off source current VDD=15V 5 10 15 mA

CSC

FINH FINL

FOH

FOL

t

FO

Negative CSC pin immunity

(5)

Fault input high level voltage 2.5 V Fault input low level voltage 1.2 V Fault input hysteresis voltage

(5)

Fault output high level voltage V Fault output low level voltage V Fault output pulse width V

Voltage on CSC pin up to -12V, Time<2s

0.5 V

=0V, R

CSC CSC CSCIN

PULL-UP

=1V, IFO=2mA 0.8 V

=1V 60 100 µs

=4.7K 4.7 V

-20 V

FAN7384 — Half-Bridge Gate-Drive IC

Dynamic Electrical Characteristics

TA=25C, V

BIAS (VDD

Symbol Parameter Conditions Min. Typ. Max. Unit

t

MT Delay matching 50 ns

DT Dead-time 80 120 170 ns

t

UVFLT

t

CSCFLT

t

CSCFO

t

CSCLO

t

SDFO

t

SDOFF

Note:

5. These parameters guaranteed by design.

Turn-on propagation delay VS=0V 180 260 ns

on

Turn-off propagation delay VS=0V or 600V

off

Turn-on rise time 50 100 ns

t

r

Turn-off fall time 30 80 ns

t

f

Under-voltage filtering time CSC pin filtering time Time from CSC triggering to FO Time from CSC triggering to low-side

gate output Shutdown to FO propagation delay Shutdown to HIGH/LOW-side gate off

, VBS) = 15.0V, VS = GND, C

(5)

= 1000pF unless otherwise specified.

Load

(5)

From V

=1V to starting gate

CSC

turn-off

(5)

170 240 ns

16 µs 300 ns 350 ns

600 ns

60 100

ns ns

Typical Characteristics

-40 -20 0 20 40 60 80 100 120

10.5

11.0

11.5

12.0

12.5

13.0

13.5

V

DDUV

+ [V]

Temperature [°C]

-40 -20 0 20 40 60 80 100 120

10.0

10.5

11.0

11.5

12.0

12.5

13.0

V

DDUV

- [V]

Temperature [°C]

-40-200 20406080100120

0.0

0.2

0.4

0.6

0.8

1.0

V

DDHYS

[V]

Temperature [°C]

-40 -20 0 20 40 60 80 100 120

10.0

10.5

11.0

11.5

12.0

12.5

13.0

V

BSUV

+ [V]

Temperature [°C]

-40 -20 0 20 40 60 80 100 120

9.5

10.0

10.5

11.0

11.5

12.0

12.5

V

BSUV

- [V]

Temperature [°C]

-40-200 20406080100120

0.0

0.2

0.4

0.6

0.8

1.0

V

BSHYS

[V]

Temperature [°C]

Figure 5. VDD UVLO (+) vs. Temperature Figure 6. VDD UVLO (-) vs. Temperature

FAN7384 — Half-Bridge Gate-Drive IC

Figure 7. V

Figure 9. V

UVLO Hysteresis vs. Temperature Figure 8. VBS UVLO (+) vs. Temperature

DD

UVLO (-) vs. Temperature Figure 10. VBS UVLO Hysteresis vs. Temperature

BS

Typical Characteristics (Continued)

-40 -20 0 20 40 60 80 100 120

0

200

400

600

800

1000

I

QDD

[A]

Temperature [°C]

-40-200 20406080100120

0

20

40

60

80

100

I

QBS

[A]

Temperature [°C]

-40 -20 0 20 40 60 80 100 120

400

600

800

1000

1200

1400

1600

I

PDD

[A]

Temperature [°C]

-40-200 20406080100120

0

200

400

600

800

1000

I

PBS

[A]

Temperature [°C]

-40-200 20406080100120

0

5

10

15

20

25

30

I

IN

+ [A]

Temperature [°C]

-40 -20 0 20 40 60 80 100 120

0

4

8

12

16

20

I

CSCIN

[A]

Temperature [°C]

Figure 11. VDD Quiescent Current vs. Temperature Figure 12. VBS Quiescent Current vs. Temperature

FAN7384 — Half-Bridge Gate-Drive IC

Figure 13. V

Figure 15. Logic Input Current vs. Temperature Figure 16. I

Operating Current vs. Temperature Figure 14. VBS Operating Current vs. Temperature

DD

vs. Temperature

CSCIN

Typical Characteristics (Continued)

-40 -20 0 20 40 60 80 100 120

0

5

10

15

20

I

SOFT

[mA]

Temperature [°C]

-40-200 20406080100120

0

20

40

60

80

100

120

t

r

[nsec]

Temperature [°C]

-40-200 20406080100120

0

20

40

60

80

100

t

f

[nsec]

Temperature [°C]

-40-200 20406080100120

0

50

100

150

200

250

300

t

on

[nsec]

Temperature [°C]

-40-200 20406080100120

0

50

100

150

200

250

300

t

off

[nsec]

Temperature [°C]

-40-200 20406080100120

0.0

0.5

1.0

1.5

2.0

2.5

3.0

V

IH

[V]

Temperature [°C]

FAN7384 — Half-Bridge Gate-Drive IC

Figure 17. I

vs. Temperature Figure 18. Turn-on Rising Time vs. Temperature

SOFT

Figure 19. Turn-off Falling Time vs. Temperature Figure 20. Turn-on Delay Time vs. Temperature

Figure 21. Turn-off Delay Time vs. Temperature Figure 22. Logic Input High Voltage vs. Temperature

Typical Characteristics (Continued)

-40-200 20406080100120

0.0

0.5

1.0

1.5

2.0

2.5

3.0

V

IL

[V]

Temperature [°C]

-40-200 20406080100120

0.0

0.2

0.4

0.6

0.8

1.0

V

INHYS

[V]

Temperature [°C]

-40-200 20406080100120

0.0

0.5

1.0

1.5

2.0

2.5

3.0

SD

BAR

+ [V]

Temperature [°C]

-40-200 20406080100120

0.0

0.5

1.0

1.5

2.0

2.5

3.0

SD

BAR

- [V]

Temperature [°C]

-40 -20 0 20 40 60 80 100 120

0.40

0.45

0.50

0.55

0.60

V

CSCREF

[V]

Temperature [°C]

-40-200 20406080100120

0.0

0.4

0.8

1.2

1.6

2.0

2.4

V

FINH

[V]

Temperature [°C]

Figure 23. Logic Input Low Voltage vs. Temperature Figure 24. Logic Input Hysteresis vs. Temperature

FAN7384 — Half-Bridge Gate-Drive IC

Figure 25. SD

Positive Threshold vs. Temperature F igure 26. SD Negative Threshold vs. Temperature

Figure 27. V

CSCREF

vs. Temperature Figure 28. Fault Input High Voltage vs. Temperature

Typical Characteristics (Continued)

-40 -20 0 20 40 60 80 100 120

4.8

5.2

5.6

6.0

V

FOH

[V]

Temperature [°C]

-40-200 20406080100120

0.0

0.2

0.4

0.6

0.8

1.0

V

FOL

[V]

Temperature [°C]

-40 -20 0 20 40 60 80 100 120

-13

-12

-11

-10

-9

-8

-7

V

S

[V]

Temperature [°C]

-40-200 20406080100120

0

40

80

120

160

200

DT [nsec]

Temperature [°C]

FAN7384 — Half-Bridge Gate-Drive IC

Figure 29. Fault Output High Voltage vs.

Temperature

Figure 31. Allowable Negative V

Voltage for Signal

S

Propagation to High Side vs. Temperature

Figure 30. Fault Output Low Voltage vs. Temperature

Figure 32. Dead Time vs. Temperature

Switching Time Definitions

LIN

V

DD

LO

FO

SD

t

UVFLT

t

FO

t

FO

Under-Voltage

Detection Point

Shutdown

Enable Point

Short-Circuit

Detection Point

UVLO-

Soft-Off Operating

Shutdown

Disable Point

Shutdown

Disable Skip

0.5V

t

CSCLO

t

CSCFO

t

CSCLO

t

CSCFO

Low-Side Output

Disable

Low-Side Output

Disable

V

CSC

FAN7384 Rev.03

The overall switching timing waveforms definition of FAN7384 as shown Figure 33.

FAN7384 — Half-Bridge Gate-Drive IC

Figure 33. Switching Timing Waveforms Definition

Typical Application Information

t

UVFLT

t

CSCLO

UVLO+

90%

LIN

V

DD

LO

FO

UVLO-

t

FO

FAN7384 Rev.01

t

CSCFO

t

1

t

2t3

After DT

HIN/LIN

LIN/HIN

LO/HO

HO/LO

After DT

Shoot-Through Prevent

FAN7384 Rev.01

HIN/LIN

LIN/HIN

LO/HO

HO/LO

After DT

Shoot-Through Prevent

FAN7384 Rev.01

(1)



CSCREF

CS

V

R

t

FO

Short-Circuit

Detection Point

Soft-Off Operating

t

CSCLO

t

CSCFO

Low-SideOutput

Disable

0.5V

LIN

LO

FO

V

CSC

FAN7384 Rev.03

1. Protection Function

1.1 Under-Voltage Lockout (UVLO)

The high- and low-side drivers include under-voltage lockout (UVLO) protection circuitry that monitors the supply voltage (VDD) and bootstrap capacitor voltage

) independently. It can be designed to prevent

(V

BS

malfunction when V specified threshold voltage. Moreover, the UVLO

hysteresis prevents chattering during power supply transitions. If the supply voltage (V

under-voltage condition over under-voltage filtering times (typically 16µs), the fault and soft-off circuits are activated, as shown Figure 34.

Figure 34. Waveforms for Under-Voltage Lockout

and VBS are lower than the

DD

) maintains an

DD

Figure 36. Waveforms for Shoot-Through Prevention

1.3 Over-Current Protection Function

The FAN7384 has over-current detection circuitry that monitors the current-by-current sensing resistor connected from the low-side switch source (V

) to ground.

SL

It is a built-in time-filler from the over-current event to prevent malfunction from a noise source, such as leading-edge pulse in inductive load application, as shown Figure 37.

The sensing current is calculated as follows:

I[A]

FAN7384 — Half-Bridge Gate-Drive IC

1.2 Shoot-Through Prevention Function

The FAN7384 has a shoot-through prevention circuitry that monitors the high- and low-side inputs. It can be designed to prevent outputs of high- and low-side turning on at same time, as shown Figure 35 and 36.

Figure 35. Wav eforms for Shoot-Throu gh Prevention

where, V

: Reference voltage of current sense

CSCREF

comparator RCS: Current sensing resistor

Figure 37. Waveforms for Short-Circuit Protection

FAN7384 — Half-Bridge Gate-Drive IC

2. Layout Considerations

For optimum performance, considerations must be taken during printed circuit board (PCB) layout.

2.1 Supply Capacitors

If the output stages are able to quickly turn on a switching device with a high value of current, the suppl y cap a citors must be placed as close as possible to the device pins (V VS for the floating supply) to minimize parasitic inductance and resistance.

and GND for the ground-tied supply, VB and

DD

2.2 Gate-Drive Loop

Current loops behave like antennae, able to receive and transmit noise. To reduce the noise coupling/emission and improve the power switch turn-on and off performance, gate-drive loops must be reduced as much as possible.

2.3 Ground Plane

To minimize noise coupling, the ground plane should not be placed under or near the high-voltage floating side.

Package Dimensions

FAN7384 — Half-Bridge Gate-Drive IC

Figure 38. 14-Lead, Small Outline Integrated Circuit (SOIC), Non-JEDEC, .150 Inch Narrow Body, 225SOP

Package drawings are provided as a service to customers considering Fairchild co mponents. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor r epresentative to ver ify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products.

Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/packaging/

FAN7384 — Half-Bridge Gate-Drive IC