Fairchild FAN7380 service manual

FAN7380 Half-Bridge Gate Driver

February 2007

Features

 Floating Channel Designed for Bootstrapping

Operation to +600V

 Typically 90mA/180mA Sourcing/Sinking Current

Driving Capability for Both Channels

 Common-Mode dv/dt Noise Canceling Circuit  Extended Allowable Negative V

Signal Propagation at V

 V

& VBS Supply Range from 10V to 20V

CC

 UVLO Functions for Both Channels  TTL-Compatible Input Logic Threshold Levels  Matched Propagation Delay Below 50ns  Built-in 100ns Dead-Time Control Function  Output in Phase with Input Signal

CC=VBS

Swing to -9.8V for

S

=15V

Typical Applications

 Fluorescent Lamp Ballast  Compact Fluorescent Lamp Ballast

Description

The FAN7380 is a monolithic half-bridge gate drive IC for MOSFETs and IGBTs, which operate up to +600V. Fairchild’s high-voltage process and common-mode noise canceling technique give stable operation of highside driver under high-dv/dt noise circumstances. An advanced level-shift circuit allows high-side gate driver operation up to V

input logic level is compatible with standard TTL-series logic gates. The internal shoot-through protection circuit provides 100ns dead-time to prevent output switching devices from both conduction during transition periods. UVLO circuits for both channels prevent malfunction when V

threshold voltage. Output drivers typically source/sink at 90mA/180mA, respectively, which is suitable for fluorescent / compact fluorescent lamp ballast applications and the systems that require low di/dt noise.

and VBS are lower than the specified

CC

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

S

8-SOP

Ordering Information

Device Package Pb-Free Operating Temperature Packing

FAN7380M

FAN7380MX

Note:

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

FAN7380 Rev. 1.0.5

(1)

8-SOP Yes -40°C ~ +125°C

Tube

Tape & Reel

Typical Application Circuit

FAN7380 Half-Bridge Gate Driver

15V

LIN

HIN

Figure 1. Application Circuit for Fluorescent Lamp Ballast

Internal Block Diagram

C1

600V

D

R

1

LIN

2

HIN

V

3

CC

COM

4

BOOT

HO

V

LO

8

B

7

6

S

5

R1

C

BOOT

R3

Q1

R2

Q2

Load

R4

FAN7380 Rev.03

HIN

LIN

8

V

B

UVLO

GENERATOR

PULSE

SCHMITT TRIGGER

2

1

INPUT

SHOOT THOUGH

PREVENTION

{DEAD-TIME=100ns}

HS(ON/OFF)

LS(ON/OFF)

NOISE

CANCELLER

UVLO

R

S

DELAY

R

DRIVER

7

HO

Q

V

6

S

3

V

CC

DRIVER

LO

5

4

COM

FAN7380 Rev.02

Figure 2. Functional Block Diagram of FAN7380

FAN7380 Rev. 1.0.5 2

Pin Configuration

FAN7380 Half-Bridge Gate Driver

LIN

HIN HO

1

2

8

7

FAN7380

V

CC

3

4COM

FAN7380 Rev.02

Figure 3. Pin Configuration (Top View)

Pin Definitions

Pin # Name I/O Description

1 LIN I Logic Input for Low-Side Gate Driver Output

2 HIN I Logic Input for High-Side Gate Driver Output

3V

4 COM Logic Ground and Low-Side Driver Return

5 LO O Low-Side Driver Output

6V

7 HO O High-Side Driver Output

8V

CC

S

B

I Low-Side Supply Voltage

I High-Voltage Floating Supply Return

I High-Side Floating Supply

6

5

V

LO

B

S

FAN7380 Rev. 1.0.5 3

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

V

S

V

B

V

HO

V

CC

V

LO

V

IN

COM Logic ground V

/dt Allowable offset voltage slew rate 50 V/ns

dV

S

(2)(3)(4)

P

D

θ

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 VB-25 VB+0.3

High-side floating supply voltage -0.3 625

High-side floating output voltage HO VS-0.3 VB+0.3

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

Low-side output voltage LO -0.3 VCC+0.3

Logic input voltage (HIN, LIN) -0.3 VCC+0.3

Power dissipation 0.625 W

Thermal resistance, junction-to-ambient 200 °C/W

Junction temperature 150 °C

Storage temperature -50 150 °C

under any circumstances.

D

=25°C, unless otherwise specified.

A

-25 VCC+0.3

CC

V

FAN7380 Half-Bridge Gate Driver

Recommended Operating Ratings

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

B

V

S

V

HO

V

LO

V

IN

V

CC

T

A

High-side floating supply voltage VS+10 VS+20

High-side floating supply offset voltage 6-V

High-side (HO) output voltage V

CC

S

Low-side (LO) output voltage COM V

Logic input voltage (HIN, LIN) COM V

600

V

CC

B

Low-side supply voltage 10 20

Ambient temperature -40 125 °C

V

FAN7380 Rev. 1.0.5 4