Fairchild FAN7081_GF085 service manual

FAN7081_GF085

High Side Gate Driver

FAN7081_GF085 High Side Gate Driver

November 2009

Features

• Qualified to AEC Q100

• Floating channel designed for bootstrap operation up fully operational to + 600V

• Tolerance to negative transient voltage on VS pin

• dV/dt immune.

• Gate drive supply range from 10V to 20V

• Under-voltage lockout

• CMOS Schmit-triggered inputs with pull-up

• High side output out of phase with input (Inverted input)

Typical Applications

• Diesel and gasoline Injectors/Valves

• MOSFET-and IGBT high side driver applications

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Description

The FAN7081_GF085 is a high-side gate drive IC 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 prevent from malfunction when VCC and VBS are lower than the specified threshold voltage. It is available with space saving SOIC-8 Package. Minimum source and sink current capability of output driver is 250mA and 500mA respectively, which is suitabl e for magnet ic- and pi ezo ty pe inj ector s and g eneral MOSFET/IGBT based high side driver applications.

SOIC-8

Ordering Information

Device Package

FAN7081M SOIC-8 -40 °C ~ 125 °C FAN7081MX SOIC-8 -40 °C ~ 125 °C

X : Tape & Reel type

FAN7081_GF085 Rev. 1.0.0

Operating

Temp.

Block Diagrams

FAN7081_GF085 High Side Gate Driver

VCC

COM

Pin Assignments

DETECT

PULSE

GEN

VCC

HV Level

Shift

PULSE FILTER

R S

COM

N.C

Pin Definitions

Pine Number Pin Name I/O Pin Function Description

1 VCC P Driver supply voltage 2IN 3COMPGround 4NC-NC 5NC-NC 6 VS P 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

I Logic input for high side gate drive output, out of phase with HO

FAN7081_GF085 Rev. 1.0.0

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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 Supply voltage V Input voltage for IN Power Dissipation Thermal resistance, junction to ambient

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 codition(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 CC -0.3 25 V

VIN -0.3 Vcc+0.3 V

Pd 0.625 W Rthja 200 °C/W V

ESD

CDM

1K V

500 V

-55 150 °C

Recommended Operating Conditions

For proper operations the device should be used within the recommended conditions. -40°C <= Ta <= 125°C

FAN7081_GF085 High Side Gate Driver

Parameter Symbol Min. Max. Unit

High side floating supply voltage(DC)

Transient:-10V@ 0.2 us

High side floating supply offset voltage(DC) V

High side floating supply offset voltage(

)

sient

High side floating output voltage V Allowable offset voltage Slew Rate Supply voltage V Input voltage for IN Switching Frequency

Ambient Temperature T

Note: 1) Guaranteed by design.

2) Duty = 0.5

Tran-

VB VS + 10 Vs + 20 V

S -4 (@VBS >= 10V)

600 V

-5 (@VBS >= 11.5V)

S -25 (~200ns)

600 V

-20(200ns ~240ns)

-7(240ns~400ns)

HO VS VB V

dv/dt - 50 V/ns

CC 10 20 V

VIN 0 Vcc V

Fs 200 KHz

a -40 125 °C

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Statics Electrical Characteristics

Unless otherwise specified, -40°C <= Ta <= 125°C,VCC = 15V, VBS = 15V, VS = 0V, RL = 50Ω, CL = 2.5nF.

Parameter Symbol Conditions Min. Typ. Max. Unit

Vcc and VBS supply Characteristics

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 - 23 250 uA

Quiescent Vcc supply current I Quiescent Vcc supply current I

Input Characteristics

High logic level input voltage V Low logic level input voltage V Low logic level input bias current for IN I High logic level input bias current for IN II

Output characteristics

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

BIAS-VO VOH IO=0 - - 0.1 V

O VOL IO=0 - - 0.1 V

Peak output source current I Peak output sink current I Equivalent output resistance R

Note: The input parameter are referenced to COM. The VO and IO parameters are referenced to COM.

VCCUV+

-8.79.8V

VBSUV+

VCCUV-

BSUV-

VCCUVH

-0.20.5-V

7.4 8.2 - V

VBSUVH

tduvbs

LK VB=VS=600V - - 50 uA

QCC1 VIN= 0V - 42 120 uA QCC2 VIN=15V - 25 100 uA

IH 0.63VCC --V

IL - - 0.4VCC V

IN+VIN=0 - 15 50 uA

N- VIN=15V - 0 1 uA

O1+ 250 - - mA

O1- 500 - - mA

OP 40 60 Ω

ON 20 30 Ω

VBS: 10V-->7.3V or 7.3V-->10V

VCC: 10V-->7.3V or 7.3V-->10V

0.5

20 20

FAN7081_GF085 High Side Gate Driver

us us

FAN7081_GF085 Rev. 1.0.0

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Dynamic Electrical Characteristics

Unless otherwise specified, -40°C <= Ta <= 125°C, VCC = 15V, VBS = 15V, VS = 0V, RL = 50Ω, CL = 2.5nF.

Parameter Symbol Conditions Min. Typ. Max. Unit

Input-to-output turn-on propagation delay tplh 50% input level to 10% output level,

Input-to-output turn-off propagation delay t

Output rising time tr1 10% to 90%, Tj=25°C,V

Output falling time tf1 90% to 10%, Tj=25°C,V

phl 50% input level to 90% output level

tr2 10% to 90% - 500 ns

tf2 90% to 10% - 500 ns

S = 0V

- 140 300 ns

BS=15V - 15 400 ns

BS=15V - 10 150 ns

FAN7081_GF085 High Side Gate Driver

130 300 ns

FAN7081_GF085 Rev. 1.0.0

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