© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com

FAN

7385 Dual-C

hannel High-Side G

ate-Drive IC

February 2007

FAN7385 Rev. 1.0.2

FAN7385Dual-Channel High-Side Gate-Drive ICFeatures

Floating Channel for Bootstrap Operation to +600VTypically 350mA/650mA Sourcing/Sinking Current Driving Capability Extended Allowable Negative VS Swing to -9.8V for Signal Propagation at VDD=VBS=15VHigh-Side Output In-Phase of Input SignalVDD & VBS Supply Range from 10V to 20V 3.3V and 5V Input Logic CompatibleBuilt-in Common Mode dv/dt Noise Canceling CircuitBuilt-in UVLO Functions for Both Channels

ApplicationsNormal Half-Bridge and Full-Bridge DriverPDP Energy Recovery Switch Control DriverSwitching Mode Power Supply

Description The FAN7385 is a monolithic high side gate drive ICdesigned for high voltage, high speed driving MOSFETsand IGBTs operating up to +600V.

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

An advanced level-shift circuit allows high-side gatedriver operation up to VS = -9.8V (typical) for VBS = 15V.

The UVLO circuits prevent malfunction when VBS1 andVBS2 are lower than the specified threshold voltage.

Output drivers typically source/sink 350mA/650mA,respectively, which is suitable for dual high-side switchesand half-bridge inverters.

Ordering Information

Note:1. These devices passed wave soldering test by JESD22A-111.

1

14-SOP

Part Number Package Pb-FreeOperating Temperature

Range Packing MethodFAN7385M(1)

14-SOP Yes -40°C ~ 125°CTube

FAN7385MX(1) Tape & Reel

FAN

7385 Dual-C

hannel High-Side G

ate-Drive IC

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.comFAN7385 Rev. 1.0.2 2

Typical Application Diagrams

Figure 1. Floated Bidirectional Switch Control for PDP application

Figure 2. Full-Bridge Power Supply Application

Figure 3. Half-Bridge LCC Resonant Converter Application

Energy Recovery Sustain Driver

VS

HVICFAN7380FAN7382

DBOOT1

D2

C2

C1

IN1

To Pannel

DBOOT2

CBOOT2

CBOOT1

Q1

Q2

D1

D3

D4

Q3

Q4

L1

IN2

15VFAN7385

Buffer IC

FAN7385 Rev.01

RBOOT

IN1

IN2

GND

NC

HO1

NC

HO2

1

2 NC

5

7

13

11

10

9

12

8

14

3

4

6

NC

VDD

VS1

VB1

VB2

VS2

Full-Bridge ConverterDBOOT1

C1

CBOOT1

15V

VDC

Load

CBOOT2

DBOOT2

L-CH OutputR-CH Output

Controller

IN1

IN2

GND

NC

HO1

NC

HO2

1

2 NC

5

7

13

11

10

9

12

8

14

3

4

6

NC

VDD

VS1

VB1

VB2

VS2

RBOOT1

RBOOT2

FAN7385 Rev.01

Resonant Converter

DBOOT

C1

INPUT1

CBOOT

15V

INPUT2

FAN7385 Rev.01

C2

Q1

Q2

L CVout

Co

IN1

IN2

GND

NC

HO1

NC

HO2

1

2 NC

5

7

13

11

10

9

12

8

14

3

4

6

NC

VDD

VS1

VB1

VB2

VS2

RBOOT

VDC

FAN

7385 Dual-C

hannel High-Side G

ate-Drive IC

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.comFAN7385 Rev. 1.0.2 3

Internal Block Diagram

Figure 4. Functional Block Diagram

NOISECANCELLER

UVLO

RRS Q

DR

IVERPULSE

GEN

ERA

TOR

NOISECANCELLER

UVLO

RRS Q

DR

IVERPULSE

GEN

ERA

TOR

5

1

10

9

8

14

13

500K

500K

12

IN2

IN1

VDD

GND

VB2

VS2

HO2

VB1

HO1

VS1

Pin 2, 4, 6 and 11 are not connection

SCHMITT TRIGGER INPUT

7

3

FAN7385 Rev.01

FAN

7385 Dual-C

hannel High-Side G

ate-Drive IC

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.comFAN7385 Rev. 1.0.2 4

Pin Configuration

Figure 5. Pin Configuration (Top View)

Pin DefinitionsPin # Name Description

1 VDD Power supply

2 NC Not connection

3 IN1 Channel 1 control input

4 NC Not connection

5 IN2 Channel 2 control input

6 NC Not connection

7 GND Ground

8 VS2 Channel 2 floating supply return

9 HO2 Channel 2 output

10 VB2 Channel 2 floating supply

11 NC Not connection

12 VS1 Channel 1 floating supply return

13 HO1 Channel 1 output

14 VB1 Channel 1 floating supply

FAN7385

VB1VDD

IN1

IN2

NC

GND

HO1

VS1

NC

VB2

HO2

VS2

NC

NC

FAN7385 Rev.00

14

13

12

11

10

9

8

1

2

3

4

5

6

7

FAN

7385 Dual-C

hannel High-Side G

ate-Drive IC

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.comFAN7385 Rev. 1.0.2 5

Absolute Maximum RatingsStresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. Theabsolute maximum ratings are stress ratings only. TA=25°C, unless otherwise specified.

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 packages4. Do not exceed PD under any circumstances.

Recommended Operating ConditionsThe Recommended Operating Conditions table defines the conditions for actual device operation. Recommendedoperating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does notrecommend exceeding them or designing to Absolute Maximum Ratings.

Symbol Parameter Min. Max. UnitVS High-side offset voltage VS1 ,VS2 VB-25 VB+0.3 V

VB High-side floating supply voltage VB1 ,VB2 -0.3 625 V

VHO High-side floating output voltage HO1, HO2 VS-0.3 VB+0.3 V

VDD Low-side and logic-fixed supply voltage -0.3 25 V

VIN Logic input voltage (IN1, IN2) -0.3 VDD+0.3 V

GND Logic ground VDD-25 VDD+0.3 V

dVS/dt Allowable offset voltage slew rate 50 V/ns

PD(2)(3)(4) Power dissipation 1.0 W

θJA Thermal resistance, junction-to-ambient 110 °C/W

TJ Junction temperature 150 °C

TS Storage temperature 150 °C

Symbol Parameter Condition Min. Max. UnitVB High-side floating supply voltage VS+10 VS+20 V

VS High-side floating supply offset voltage 6-VDD 600 V

VDD Supply voltage 10 20 V

VHO High-side (HO1, HO2) output voltage VS VB V

VIN Logic input voltage (IN1, IN2) GND VDD V

TA Ambient temperature -40 125 °C

FAN

7385 Dual-C

hannel High-Side G

ate-Drive IC

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.comFAN7385 Rev. 1.0.2 6

Electrical CharacteristicsVBIAS (VDD, VBS1, VBS2) = 15.0V, TA = 25°C, unless otherwise specified. The VIN and IIN parameters are referenced toGND. The VO and IO parameters are referenced to VS1 and VS2 and are applicable to the respective outputs HO1 andHO2.

Dynamic Electrical CharacteristicsTA=25°C, VBIAS (VDD, VBS1, VBS2) = 15.0V, VS1 = VS2 = GND, CLoad = 1000pF unless otherwise specified.

Notes: 5. This parameter guaranteed by design.

Symbol Characteristics Condition Min. Typ. Max. UnitSUPPLY CURRENT SECTION

IQDD Quiescent VDD supply current VIN1=VIN2=0V or 5V 28 50 μAIPDD Operating VDD supply current fIN1=fIN2=10kHz, rms value 35 70 μA

BOOTSTRAPPED POWER SUPPLY SECTION

VBSUV+VBS1 and VBS2 supply under-voltage positive going threshold VBS1=VBS2=Sweep 8.2 9.1 10.2 V

VBSUV-VBS1 and VBS2 supply under-voltage negative going threshold VBS1=VBS2=Sweep 7.6 8.5 9.6 V

VBSHYSVBS1 and VBS2 supply under-voltage lockout hysteresis VBS1=VBS2=Sweep 0.6 V

ILK Offset supply leakage current VB=VS=600V 10 μAIQBS1,2 Quiescent VBS1 and VBS2 supply current VIN1=0V or 5V 50 85 μAIPBS1,2 Operating VBS1 and VBS2 supply current fIN1=10kHz, rms value 220 300 μA

GATE DRIVER OUTPUT SECTIONVOH High-level output voltage, VBIAS-VO IO=0mA (No Load) 30 mVVOL Low-level output voltage, VO IO=0mA (No Load) 30 mVIO+ Output HIGH short-circuit pulse current VO=0V, VIN=5V with PW<10µs 250 350 mAIO- Output LOW short-circuit pulsed current VO=15V, VIN=0V with PW<10µs 500 650 mA

VSAllowable negative VS pin voltage for IN signal propagation to HO

-9.8 -7.0 V

LOGIC INPUT SECTION (IN1 AND IN2)VIH Logic "1" input voltage 2.5 VVIL Logic "0" input voltage 1.3 VIIN+ Logic "1" input bias current VIN=5V 10 20 μAIIN- Logic "0" input bias current VIN=0V 2.0 μARIN Input pull-down resistance 400 500 600 KΩ

Symbol Parameter Conditions Min. Typ. Max. Unitton Turn-on propagation delay VS=0V 110 180 ns

toff Turn-off propagation delay VS=0V or 600V(5) 110 180 ns

tr Turn-on rise time 50 90 ns

tf Turn-off fall time 30 70 ns

MT Delay matching, Channel 1 & 2 turn-on/off 0 ns

FAN

7385 Dual-C

hannel High-Side G

ate-Drive IC

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.comFAN7385 Rev. 1.0.2 7

Typical Characteristics

Figure 6. VBS UVLO (+) vs. Temperature Figure 7. VBS UVLO (-) vs. Temperature

Figure 8. VBS UVLO Hysteresis vs. Temperature Figure 9. VDD Quiescent Current vs. Temperature

Figure 10. VBS Quiescent Current vs. Temperature Figure 11. VDD Operating Current vs. Temperature

-40 -20 0 20 40 60 80 100 1208.00

8.25

8.50

8.75

9.00

9.25

9.50

9.75

10.00

V BSU

VP [V

]

Temperature [°C]-40 -20 0 20 40 60 80 100 120

8.0

8.2

8.4

8.6

8.8

9.0

VBS

UVN

[V]

Temperature [°C]

-40 -20 0 20 40 60 80 100 1200.0

0.2

0.4

0.6

0.8

1.0

VBS

HYS

[V]

Temperature [°C]-40 -20 0 20 40 60 80 100 1200

10

20

30

40

50

60

70

I Q

DD [μ

A]

Temperature [°C]

VIN1= VIN2=GND

-40 -20 0 20 40 60 80 100 1200

10

20

30

40

50

60

70

I QBS

[μA

]

Temperature [°C]

VIN1= VIN2=GND

-40 -20 0 20 40 60 80 100 12010

20

30

40

50

60

70

80

I PDD [μ

A]

Temperature [°C]

FAN

7385 Dual-C

hannel High-Side G

ate-Drive IC

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.comFAN7385 Rev. 1.0.2 8

Typical Characteristics (Continued)

Figure 12. VBS Operating Current vs. Temperature Figure 13. Logic High Input Current vs. Temperature

Figure 14. Logic Low Input Current vs. Temperature Figure 15. Logic Input High Voltage vs. Temperature

Figure 16. Logic Input Low Voltage vs. Temperature Figure 17. Logic Input Resistance vs. Temperature

-40 -20 0 20 40 60 80 100 120100

125

150

175

200

225

250

275

300

I PBS [μ

A]

Temperature [°C]-40 -20 0 20 40 60 80 100 12002468

101214161820

IN+

[μA

]

Temperature [°C]

-40 -20 0 20 40 60 80 100 120-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

2.0

IN- [μA

]

Temperature [°C]-40 -20 0 20 40 60 80 100 120

2.0

2.1

2.2

2.3

2.4

2.5

2.6

2.7

V

IH [V

]

Temperature [°C]

-40 -20 0 20 40 60 80 100 1201.01.11.21.31.41.51.61.71.81.92.0

VIL [V

]

Temperature [°C]-40 -20 0 20 40 60 80 100 1200

200

400

600

800

1000

RIN

[kΩ

]

Temperature [°C]

FAN

7385 Dual-C

hannel High-Side G

ate-Drive IC

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.comFAN7385 Rev. 1.0.2 9

Typical Characteristics (Continued)

Figure 18. Rising Time vs. Temperature Figure 19. Falling Time vs. Temperature

Figure 20. Turn-On Delay Time vs. Temperature Figure 21. Turn-Off Delay Time vs. Temperature

Figure 22. Delay Matching Time vs. Temperature Figure 23. Allowable Negative VS Voltage for Signal Propagation to High Side vs. Temperature

-40 -20 0 20 40 60 80 100 120102030405060708090

100

t R [n

s]

Temperature [°C]-40 -20 0 20 40 60 80 100 1200

10

20

30

40

50

60

70

80

t F [ns]

Temperature [°C]

-40 -20 0 20 40 60 80 100 12090

100110120130140150160170180

t ON [n

s]

Temperature [°C]-40 -20 0 20 40 60 80 100 120

100

110

120

130

140

150

160

170

180

t O

FF [n

s]

Temperature [°C]

-40 -20 0 20 40 60 80 100 120-15

-10

-5

0

5

10

15

20

MT

[ns]

Temperature [°C]-40 -20 0 20 40 60 80 100 120

-6

-8

-10

-12

-14

VS [V

]

Temperature [°C]

FAN

7385 Dual-C

hannel High-Side G

ate-Drive IC

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.comFAN7385 Rev. 1.0.2 10

Typical Characteristics (Continued)

Figure 24. Output High Short-Circuit Pulse Current vs. Temperature

Figure 25. Output Low Short-Circuit Pulse Current vs. Temperature

Figure 26. VDD Quiescent Current vs. Supply Voltage

Figure 27. VDD Operating Current vs. Supply Voltage

Figure 28. VBS Operating Current vs. Supply Voltage Figure 29. Rising Time vs. Supply Voltage

-40 -20 0 20 40 60 80 100 120300

320

340

360

380

400

I O+

[V]

Temperature [°C]-40 -20 0 20 40 60 80 100 120

500

550

600

650

700

750

I O- [

V]

Temperature [°C]

0 5 10 15 20 250

20

40

60

80

I QD

D [μ

A]

Supply Voltage [V]0 5 10 15 20

0

20

40

60

80

I PD

D [μ

A]

Supply Voltage [V]

0 5 10 15 200

50

100

150

200

250

I PBS [μ

A]

Supply Voltage [V]10 11 12 13 14 15 16 17 18 19 20

10

20

30

40

50

60

70

80

t R [n

s]

Supply Voltage [V]

FAN

7385 Dual-C

hannel High-Side G

ate-Drive IC

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.comFAN7385 Rev. 1.0.2 11

Typical Characteristics (Continued)

Figure 30. Falling Time vs. Supply Voltage Figure 31. Turn-On Delay Time vs. Supply Voltage

Figure 32. Turn-Off Delay Time vs. Supply Voltage Figure 33. Output Source Current vs. Supply Voltage

Figure 34. Output Sink Current vs. Supply Voltage Figure 35. Allowable Negative VS Voltage for Signal Propagation to High Side vs. Supply Voltage

10 11 12 13 14 15 16 17 18 19 2010

20

30

40

50

t F [ns]

Supply Voltage [V]10 11 12 13 14 15 16 17 18 19 20

80

90

100

110

120

130

140

150

160

t ON [n

s]

Supply Voltage [V]

10 11 12 13 14 15 16 17 18 19 2080

90

100

110

120

130

140

150

160

t OFF

[ns]

Supply Voltage [V]10 11 12 13 14 15 16 17 18 19 20

200

250

300

350

400

450

500

O

utpu

t Sou

rcin

g C

urre

nt [m

A]

Supply Voltage [V]

10 11 12 13 14 15 16 17 18 19 20400

500

600

700

800

900

1000

Out

put S

ourc

ing

Cur

rent

[mA

]

Supply Voltage [V]10 11 12 13 14 15 16 17 18 19 20

-16

-14

-12

-10

-8

-6

-4

VS

[V]

Supply Voltage [V]

FAN

7385 Dual-C

hannel High-Side G

ate-Drive IC

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.comFAN7385 Rev. 1.0.2 12

Switching Time Definitions

Figure 36. Switching Time Test Circuit

Figure 37. Input / Output Waveforms

(B)(A)

10μF 0.1μFVDD

15V

HVIC

GND

IN

VB

VS

HO

10μF 0.1μF

IN 15V

1000pF

IN

OUT

50%

90%

50%

ton

10%

tr toff tf

10%

90%

FAN7385 Rev.00

IN1

IN2

HO1

HO2

FAN7385 Rev.00

FAN

7385 Dual-C

hannel High-Side G

ate-Drive IC

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.comFAN7385 Rev. 1.0.2 13

Typical Application Information1. Under-Voltage Lockout (UVLO)The FAN7385 has an under-voltage lockout (UVLO)protection circuit to prevent malfunction when VBS1 andVBS2 are lower than the specified threshold voltage. TheUVLO circuit monitors the bootstrap capacitor voltages(VBS1, VBS2) independently.

2. Layout ConsiderationFor optimum performance, considerations must be givenduring printed circuit board (PCB) layout.

2.1 Supply Capacitors

If the output stages are able to quickly turn on a switch-ing device with a high current value, the supply capaci-tors must be placed as close as possible to the devicepins (VDD and GND for the ground-tied supply, VB andVS for the floating supply) to minimize parasitic induc-tance and resistance.

2.2 Gate Drive Loop

Current loops behave like antennae, able to receive andtransmit noise. To reduce the noise coupling/emissionand improve the power switch turn-on and off perfor-mances, gate drive loops must be reduced as much aspossible.

2.3 Ground Plane

To minimize noise coupling, avoid placing the groundplane under or near the high-voltage floating side.

FAN

7385 Dual-C

hannel High-Side G

ate-Drive IC

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.comFAN7385 Rev. 1.0.2 14

Package Dimensions14-SOPDimensions are in millimeters unless otherwise noted.

Figure 38. 14-Lead Small Outline Package (SOP)

January 2001, Rev. A

14sop225b_dim.pdf

8.56

±0.2

0

0.33

7±0

.008

1.27

0.05

0

5.720.225

1.55 ±0.10

0.061 ±0.004

0.050.002

6.00 ±0.30

0.236 ±0.012

3.95 ±0.20

0.156 ±0.008

0.60 ±0.20

0.024 ±0.008

8.70

0.34

3M

AX

#1

#7 #8

0~8°

#14

0.47

0.01

9(

)

1.800.071

MA

X0.

10M

AX

0.00

4

MAX

MIN

+0.

10-0

.05

0.20

+0.

004

-0.0

020.

008

+0.

10-0

.05

0.40

6

+0.

004

-0.0

020.

016

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The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks.

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FASTr

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®

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HiSeC

i-LoImpliedDisconnect

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MSX

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OCX

OCXProOPTOLOGIC

®

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VCX

Wire

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.

As used herein:

1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user.

2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

PRODUCT STATUS DEFINITIONS

Definition of Terms

Datasheet Identification Product Status Definition

Advance Information Formative or In Design This datasheet contains the design specifications for product development. Specifications may change in any manner without notice.

Preliminary First Production This datasheet contains preliminary data; supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design.

No Identification Needed Full Production This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design.

Obsolete Not In Production This datasheet contains specifications on a product that has been discontinued by Fairchild Semiconductor. The datasheet is printed for reference information only.

Rev. I23

FAN

7385 Dual-C

hannel High-Side G

ate-Drive IC

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.comFAN7385 Rev. 1.0.2 15