Fairchild FAN73892 service manual

FAN73892 3-Phase Half-Bridge Gate-Drive IC

FAN73892 — 3-Phase Half-Bridge Gate-Drive IC

March 2012

Features

 Floating Channel for Bootstrap Operation to +600V  Typically 350mA/650mA Sourcing/Sinking Current-

Driving Capability for All Channels

 Extended Allowable Negative V

Signal Propagation at V

DD=VBS

Swing to -9.8V for

S

=15V

 Outputs Out of Phase with Input Signals  Over-Current Shutdown Turns Off All Six Drivers  Matched Propagation Delay for All Channels  3.3V and 5V Input Logic Compatible  Adjustable Fault-Clear Timing  Built-in Advanced Input Filter  Built-in Shoot-Through Prevention Logic  Built-in Soft Turn-Off Function  Common-Mode dv/dt Noise-Canceling Circuit  Built-in UVLO Functions for All Channels

Applications

3-Phase Motor Inverter Driver

  Air Conditioner, Washing Machine, Refrigerator,

Dish Washer

 Industrial Inverter – Sewing Machine, Power Tool  General-Purpose Three-Phase Inverter

Description

The FAN73892 is a monolithic three-phase 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 protection functions include under-voltage lockout and inverter over-current trip with an automatic faultclear function. Over-current protection that terminates all six outputs can be derived from an external currentsense resistor. An open-drain fault signal is provided to indicate that an over-current or under-voltage shutdown has occurred. The UVLO circuits prevent malfunction when VDD and VBS are lower than the threshold voltage.

Output drivers typically source and sink 350mA and 650mA, respectively; which is suitable for three-phase half-bridge applications in motor drive systems.

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

S

28-SOIC

Ordering Information

Part Number Package Operating Temperature Packing Method

FAN73892MX

Note:

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

(1)

28-SOIC -40 to +125°C Tape & Reel

Typical Application Diagram

Figure 1. 3-Phase BLDC Motor Drive Application

Internal Block Diagram

FAN73892 — 3-Phase Half-Bridge Gate-Drive IC

FAN73892M

I

SOFT

I

SOFT

V

HO1

V

LO1

COM

V

HO2

V

LO2

V

HO3

V

LO3

B1

S1

DD

B2

S2

B3

S3

28

27

26

1

16

13

24

23

22

15

COM

20

19

18

14

2

50K

HIN2

3

HIN3

4

LIN1

5

LIN2

6

LIN3

7

INPUT NOISE

50K

[ t

FLTIN

50K

SHOOT-THROUGH

50K

PREVENTION

DEAD-TIME

50K

[ D

FILTER

=250ns ]

=300ns ]

T

UHIN

V

DD

ULIN

U Phase Driver

V

DD

VHIN

ENABLE INPUT

EN

10

8

12

150K

FO

Vss

[ t

FILTER

FLTEN

=250ns ]

VLIN

V

DD

WHIN WLIN

NOISE

CANCELLER

UVLO

V Phase Driver

W Phase Driver

UVLO

R S

DELAY

R

Q

50K

HIN1

COM

V

DD_UVLO

Fault

V

REF

i

RCIN

11

RCIN

V

RCIN,TH

V

RCIN,HYS

= 3.3V

= 0.7V

Q R

SET

DOMINANT

LATCH

S

SOFT-OFF

CS_COMP

3.3V

LEB

0.5V

I

SOFT

CS

9

Protection Circuit

Figure 2. Functional Block Diagram

Pin Configuration

Pin Definitions

FAN73892 — 3-Phase Half-Bridge Gate-Drive IC

Figure 3. Pin Assignments

Pin Name Description

1 V

2 Logic Input 1 for high-side gate 1 driver 3 Logic Input 2 for high-side gate 2 driver 4 Logic Input 3 for high-side gate 3 driver 5 Logic Input 1 for low-side gate 1 driver 6 Logic Input 2 for low-side gate 2 driver 7 Logic Input 3 for low-side gate 3 driver

8 Fault output with open drain (indicates over-current and low-side under-voltage)

9 CS Analog input for over-current shutdown

10 EN Logic input for shutdown functionality

11 RCIN An external RC network input used to define the fault-clear delay

12 VSS Logic ground

13 COM Low-side driver return

14 LO3 Low-side gate driver 3 output

15 LO2 Low-side gate driver 2 output

16 LO1 Low-side gate driver 1 output

17, 21, 25 NC No connect

18 VS3 High-side driver 3 floating supply offset voltage

19 HO3 High-side driver 3 gate driver output

20 VB3 High-side driver 3 floating supply

22 VS2 High-side driver 2 floating supply offset voltage

23 HO2 High-side driver 2 gate driver output

24 VB2 High-side driver 2 floating supply

26 VS1 High-side driver 1 floating supply offset voltage

27 HO1 High-side driver 1 gate driver output

28 VB1 High-side driver 1 floating supply

DD

HIN1

HIN2

HIN3

LIN1

LIN2

LIN3

FO

Logic and low-side gate driver power supply voltage

FAN73892 — 3-Phase Half-Bridge Gate-Drive IC

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 conditions may affect device reliability. The absolute maximum ratings are stress ratings only. T

Symbol Parameter Min. Max. Unit

VS High-Side Floating Offset Voltage V

VB High-Side Floating Supply Voltage -0.3 625.0 V

VDD Low-Side and Logic-Fixed supply voltage -0.3 25.0 V

VHO High-Side Floating Output Voltage V

VLO Low-Side Floating Output Voltage V

VIN Input Voltage ( , , CS, and EN) -0.3 5.5 V

VFO Fault Output Voltage ( ) -0.3 VDD+0.3 V

PW

High-Side Input Pulse Width 500 ns

HIN

dVS/dt Allowable Offset Voltage Slew Rate ±50 V/ns

PD Power Dissipation

θJA Thermal Resistance 70 °C/W

TJ Junction Temperature 150 °C

T

Storage Temperature -55 150 °C

STG

Notes:

2. Mounted on 76.2 x 114.3 x 1.6mm PCB (FR-4 glass epoxy material). Refe r to the following standards: JESD51-2: Integral circuit’s thermal test method environmental conditions, natural convection; JESD51-3: Low effective thermal conductivity test board for leaded surface-mount packages.

3. Do not exceed maximum power dissipation (P

HINx

LINx

FO

(2,2)

1.4 W

=25°C, unless otherwise specified.

A

V

HO1,2,3

-0.3 VDD+0.3 V

LO1,2,3

) under any circumstances.

D

B1,2,3

S1,2,3

-25 V

-0.3 V

+0.3 V

B1,2,3

+0.3 V

B1,2,3

Recommended Operating Conditions

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

Symbol Parameter Min. Max. Unit

V

High-Side Floating Supply Voltage V

B1,2,3

V

High-Side Floating Supply Offset Voltage 6-VDD 600 V

S1,2,3

VDD Low-Side and Logic Fixed Supply Voltage 10 20 V

V

High-Side Output Voltage V

HO1,2,3

V

Low-Side Output Voltage COM VDD V

LO1,2,3

VFO Fault Output Voltage ( ) VSS V

FO

VCS Current-Sense Pin Input Voltage VSS 5 V

VIN Logic Input Voltage ( and ) VSS 5 V

HIN1,2,3

LIN1,2,3

VSS Logic Ground -5 5 V

TA Ambient Temperature -40 +125 °C

S1,2,3

+10 V

V

+20 V

S1,2,3

V

B1,2,3

V

DD

Electrical Characteristics

V

BIAS (VDD

COM and are applicable to all six channels. The V applicable to the respective output leads: HO1,2,3 and LO1,2,3. The V V

BSUV

Symbol Parameter Condition Min. Typ. Max. Unit

Low-Side Power Supply Section

V

Bootstrapped Power Supply Section

V

Gate Driver Output Section

Logic Input Section

Enable Control Section (EN)

V

, V

parameters are referenced to V

I

Quiescent VDD Supply Current V

QDD

I

Operating VDD Supply Current f

PDD

DDUV+

DDUV-

DDHYS

BSUV+

BSUV-

BSHYS

ILK Offset Supply Leakage Current V

I

Quiescent VBS Supply Current V

QBS

I

Operating VBS Supply Current f

PBS

VOH High-Level Output voltage, V

VOL Low-Level Output voltage, VO I

IO+ Output HIGH Short-Circuit Pulse Current

IO- Output LOW Short-Circuit Pulsed Current

VS

VIH Logic "0" Input Voltage , 2.5 V

VIL Logic "1" Input Voltage , 0.8 V

I

IN+

I

IN-

RIN

EN+

V

EN-

I

EN+

I

EN-

) = 15.0V and TA = 25°C unless otherwise specified. The VIN and IIN parameters are referenced to

BS1,2,3

.

S1,2,3

VDD Supply Under-Voltage Positive-Going Threshold

V

Supply Under-Voltage Negative-Going

DD

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

BIAS-VO

Allowable Negative VS Pin Voltage for HIN Signal Propagation to HO

and IO parameters are referenced to V

O

=0V or 5V, EN=0V 200

LIN1,2,3

=20kHz, rms Value 500

LIN1,2,3

parameters are referenced to COM. The

DDUV

VDD=Sweep 7.5 8.5 9.3 V

=Sweep 7.0 8.0 8.7 V

V

DD

VDD=Sweep 0.5 V

V

=Sweep 7.5 8.5 9.3 V

BS1,2,3

V

=Sweep 7.0 8.0 8.7 V

BS1,2,3

V

=Sweep 0.5 V

BS1,2,3

B1,2,3=VS1,2,3

HIN1,2,3

I

=0mA (No Load) 100 mV

O

=0mA (No Load) 100 mV

O

(4)

V

=15V, VIN=0V with PW≤10µs

O

(4)

VO=0V, VIN=5V with PW≤10µs

=600V 10

=0V or 5V, EN=0V 10 50 80

=20kHz, rms Value 200 320 480

-9.8 -7.0 V

and COM and are

S1,2,3

μA

250 350 mA

500 650 mA

HIN1,2,3 LIN1,2,3

HIN1,2,3

Logic Input Bias Current (HO=LO=HIGH)

Logic Input Bias Current (HO=LO=LOW)

Logic Input Pull-Up Resistance

LIN1,2,3

VIN=0V 100

VIN=5V 8.5 25

50

μA

KΩ

Enable Positive-Going Threshold Voltage 2.5 V

Enable Negative-Going Threshold Voltage 0.8 V

Logic Enable “1” Input Bias Current

Logic Enable “0” Input Bias Current

=5V (Pull-Down=150KΩ)

V

EN

VEN=0V 2

33

μA

FAN73892 — 3-Phase Half-Bridge Gate-Drive IC

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Fairchild FAN73892 service manual

Specifications and Main Features

Frequently Asked Questions

User Manual