Fairchild FAN7080_GF085 service manual

FAN7080_GF085

Half Bridge Gate Driver

FAN7080_GF085 Half Bridge Gate Driver

November 2009

Features

• Qualified to AEC Q100

• Floating channel designed for bootstrap operation fu lly oper­ational to + 600V

• Tolerance to negative transient voltage on VS pin

• VS-pin dv/dt immune.

• Gate drive supply range from 5.5V to 20V

• Under-voltage lockout

• CMOS Schmitt-triggered inputs with pull-down

• High side output in phase with input

• IN input is 3.3V/5V logic compatible and available on 15V
input

• Matched propagation delay for both channels

• Dead time adjustable

Typical Applications

• Junction Box

• Half and full bridge application in the motor drive system

For Fairchild’s definition of “green” Eco Status, please visit:

http://www.fairchildsemi.com/company/green/rohs_green.html

Description

The FAN7080_GF085 is a half-bridge gate drive IC with reset
input and adjustable dead time control. It is designed for high
voltage and high speed driving of MOSFET or IGBT, which
operates up to 600V. Fairchild's high-voltage process and com­mon-mode noise cancellation technique provide stable opera­tion in the high side driver under high-dV/dt noise
circumstances. An advanced level-shift circuit allows high-side
gate driver operation up to VS=-5V (typical) at VBS=15V. Logic
input is compatible with standard CMOS outputs. The UVLO cir­cuits for both channels prevent from malfunction when VCC and
VBS are lower than the specified threshold voltage. Combined
pin function for dead time adjustment and reset shutdown make
this IC packaged with space saving SOIC-8 Package. Minimum
source and sink current capability of output driver is 250mA and
500mA respectively, which is suitable for junction box applica­tion and half and full bridge application in the motor drive sys­tem.

SOIC-8

Ordering Information

Device Package

FAN7080M SOIC-8 -40 °C ~ 125 °C
FAN7080MX SOIC-8 -40 °C ~ 125 °C

X : Tape & Reel type

©2009 Fairchild Semiconductor Corporati on 1 www.fairchildsemi.com

FAN7080_GF085 Rev. 1.0.0

Operating

Temp.

Block Diagrams

FAN7080_GF085 Half Bridge Gate Driver

VCC

IN

500kΩ

vreg

SD/DT

500kΩ

Pin Assignments

vreg

DEADTIME

CONTROL

VCC

PULSE

GENERATOR

DELAY

UVLO

PULSE
FILTER

UVLO

R
RSQ

VB

HO

VS

VCC

LO

COM

1

VCC

2

IN

3

SD/DT

4

COM

VB

HO

VS

LO

8

7

6

5

Pin Definitions

Pine Number Pin Name I/O Pin Function Description

1 VCC P Driver supply voltage
2 IN I Logic input for high and low side gate drive output
3SD
4COMPGround
5 LO A Low side gate drive output for MOSFET Gate connection
6 VS A High side floating offset for MOSFET Source connection
7 HO A High side drive output for MOSFET Gate connection
8 VB P Driver output stage supply

/DT I Shut down input and dead time setting

FAN7080_GF085 Rev. 1.0.0

2 www.fairchildsemi.com

Absolute Maximum Ratings

Absolute Maximum Ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters are abso­lute voltages referenced to COM.

Parameter Symbol Min. Max. Unit

High side floating supply offset voltage VS VB-25 VB+0.3 V
High side floating supply voltage V
High side floating output voltage V
Low side output voltage V
Supply voltage V
Input voltage for IN
Input injection current. Full function, no lat ch

up;(Guaranteed by design). Test at 10V and
17V on Eng.Samples

Power Dissipation Pd 0.625 W
Thermal resistance, junction to ambient Rthja 200 °C/W
Electrostatic discharge voltage

(Human Body Model)
Charge device model V
Junction Temperature Tj 150 °C
Storage Temperature T

Note: 1) The thermal resistance and power dissipation rating are measu red bellow conditions;

JESD51-2: Integrated Circuit Thermal Test Method Environmental Conditions - Natural convection(StillAir)
JESD51-3 : Low Effective Thermal Conductivity Test Board for Leaded Surface Mount Package

B -0.3 625 V
HO Vs-0.3 VB+0.3 V
LO -0.3 VCC + 0.3 V
CC -0.3 25 V

VIN -0.3 Vcc+0.3 V

IN -+1 mA

I

V

ESD

CDM

S

1K V

500 V

-55 150 °C

FAN7080_GF085 Half Bridge Gate Driver

Recommended Operating Conditions

For proper operation the device should be used within the recommended conditions.

Parameter Symbol Min. Max. Unit

High side floating supply voltage(DC)

Transient:-10V@ 0.1 us

High side floating supply offset voltage(DC)

Transient: -25V(max) @0.1us @VBS<25V

High side floating output voltage V
Low side output voltage V
Allowable offset voltage Slew Rate

2)

Supply voltage for logic part V
Logic input voltage V
Switching Frequency

3)

Ambient Temperature T

Note: 1) The Vs offset is tested with all supplies biased at 15V differential.

2) Guaranteed by design.

3) When VDT= 1.2V.

1)

VB

VS + 6 VS + 20 V

VS -5 600 V

HO Vs VB V
LO 0VCC V

dv/dt - 50 V/ns

CC 5.5 20 V

IN 0Vcc V

Fs 200 KHz

a -40 125 °C

FAN7080_GF085 Rev. 1.0.0

3 www.fairchildsemi.com

Statics Electrical Characteristics

Unless otherwise specified, -40°C <= Ta <= 125°C, VCC = 15V, VBS = 15V, VS = 0V, CL = 1nF.

Parameter Symbol Conditions Min. Typ. Max. Unit

Vcc and VBS supply Characteristics

V

CC and VBS supply under voltage

positive going threshold

CC and VBS supply under voltage

V
negative going threshold

CC and VBS supply under voltage

V
hysteresis

Under voltage lockout response time tduvcc

Offset supply leakage current I
Quiescent V

BS supply current IQBS VIN=0 OR 5V, VSDT = 1.2V 20 75 150 uA

Quiescent Vcc supply current I

Input Characteristics

High logic level input voltage V
Low logic level input voltage V
High logic level input bias current for IN I
Low logic level input bias current for IN II
VSDT dead time setting range V
VSDT shutdown threshold voltage V
High logic level resistance for SD

/DT RSDT VSDT=5V 100 500 1100 KΩ

Low logic level input bias current for SD

Output characteristics

High level output voltage, V
Low level output voltage, V

CC-VHO VOH(HO) IO=0 - - 0.1 V

HO VOL(HO) IO=0 - - 0.1 V

Output high short circuit pulse current I
Output low short circuit pulse current I
Equivalent output resistance R

High level output voltage, V
Low level output voltage, V

B-VLO VOH(LO) IO=0 - - 0.1 V

LO VOL(LO) IO=0 - - 0.1 V

Output high short circuit pulse current I
Output low short circuit pulse current I
Equivalent output resistance R

VCCUV+

--4.25.5V

VBSUV+

VCCUV-

BSUV-

V

VCCUVH

-2.83.6-V

-0.20.6-V

VBSUVH

VCC: 6V-->2.5V or 2.5V-->6V

tduvbs

LK VB=VS=600V - 20 50 uA

QCC VIN=0 OR 5, VSDT = 1.2V - 350 1000 uA

IH 2.7 - - V
IL --0.8V

IN+ VIN=5V - 10 50 uA

N- VIN=0V - 0 2 uA
DT 1.2 - 5 V
SD -0.81.2V

/DT

ISDT-

O+(HO) 250 300 - mA

O-(HO) 500 600 - mA
OP(HO)
ON(HO) --30Ω

R

O+(LO) 250 - - mA
O-(LO) 500 - - mA

OP(LO) --60Ω
ON(LO) --30Ω

R

VBS: 6V-->2.5V or 2.5V-->6V

VSDT=0V - 1 2 uA

0.5

0.5

-

-

20
20

--60Ω

FAN7080_GF085 Half Bridge Gate Driver

us
us

FAN7080_GF085 Rev. 1.0.0

4 www.fairchildsemi.com

Dynamic Electrical Characteristics

Unless otherwise specified, -40°C <= Ta <= 125°C, VCC = 15V, VBS = 15V, VS = 0V, CL = 1nF.

Parameter Symbol Conditions Min. Typ. Max. Unit

Turn-on propagation delay ton VS=0V - 750 1500 ns
Turn-off propagation delay toff V
Turn -on rising time tr - - 40 150 ns
Turn -off falling time tf - - 25 400 ns
Dead time, LS turn-off to HS turn-on

and HS turn-on to LS turn-off
Dead time matching time MDT DT1 -DT2@ VDT=1.2V

Delay Matching, HS and LS turn-on MTON VDT=1.2V - 25 110 ns
Delay Matching, HS and LS turn-off MTOFF VDT=1.2V 15 60 ns
Shutdown propagation delay Tsd - 180 330 ns
Switching Frequency Fs1 V

DT V

Fs2 V

IN=0 or 5V@ VDT=1.2V
IN=0 or 5V@ VDT=3.3V

V

DT1 -DT2@ VDT=3.3V

S=0V - 130 250 ns

250

1600

CC=VBS=20V - - 200 KHz

CC=VBS=5.5V - - 200 KHZ

650

2100

-35-110

1200
2600

300

FAN7080_GF085 Half Bridge Gate Driver

ns

ns

FAN7080_GF085 Rev. 1.0.0

5 www.fairchildsemi.com

Typical Application Circuit

VCC

FAN7080_GF085 Half Bridge Gate Driver

Up to 600V

1

IN

R1

VDT

SHUTDOWN
/DEAD TIME

R2

VDT = Vdd*R2 / (R1+R2). Vdd is output voltage of Microcontroller.
The operating range that allows a VDT r ange of 1. 2 ~3 .3V.
When pulled lower than V
Care must be taken to avoid bel ow thresh old spi kes on pin 3 that can cause undes ired shut down of the IC.
For this reason the connection of the compon ents bet ween pi n 3 and ground has to be as short as possi ble.
And a capacitor (Typ 0.02uF )between pin3 and COM can prevent this spike. This pin can not be left
floating for the same reason.

DT [Typ. 0.5V] the device is shutdown.

VCC

2

IN

3

SD/DT

4

COM

VB

HO

VS

LO

8

7

To Load

6

5

FAN7080_GF085 Rev. 1.0.0

6 www.fairchildsemi.com