Fairchild FAN73901 service manual

FAN73901 High- and Low-Side, Gate-Drive IC

FAN73901 — High- and Low Side, Gate-Drive IC

August 2008

Features

 Floating Channels for Bootstrap Operation to +600V  Typically 2.5A/2.5A Sourcing/Sinking Current Driving

Capability

 Common-Mode dv/dt Noise Canceling Circuit  Built-in Under-Voltage Lockout for Both Channels  Matched Propagation Delay for Both Channels  3.3V and 5V Input Logic Compatible  Output In-Phase with Input

Applications

 Half-Bridge Driver  HID Lamp Ballast  SMPS  Motor Driver

Description

The FAN73901 is a monolithic high- and low-side gatedrive IC, which can drive high-speed MOSFETs and IGBTs that operate up to +600V. It has a buffered output stage with all NMOS transistors designed for high pulse current driving capability and minimum cross-conduction.

Fairchild’s high-voltage process and common-mode noise canceling techniques provide stable operation of the high-side driver under high dv/dt noise circum stances. An advanced level-shift circuit offers high-side gate driver operation up to V V

=15V.

BS

The UVLO circuit prevents malfunction when VDD and

are lower than the specified threshold voltage.

V

BS

The high current and low output voltage drop feature make FAN73901 suitable for the switching power supply, motor driver, and high-power DC-DC converter applications.

8-SOP

=-9.8V (typical) for

S

-

Ordering Information

Operating

Part Number Package

FAN73901M

FAN73901MX Tape & Reel

For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.

8-SOP -40°C ~ 125°CRoHS

Temperature Range Eco Status Packing Method

Tube

Typical Application Circuit

HIN

Controller

LIN

1

2

3

FAN73901

HIN

LIN

COM

HO

FAN73901 — High- and Low Side, Gate-Drive IC

15V

R

BOOT

D

8

V

B

7

6

V

S

BOOT

R1

C

BOOT

Up to 600V

Q1

R2

Internal Block Diagram

FAN73901

1

HIN

200K

2

LIN

200K

4LO

5

V

DD

C1

OUTPUT

R3

Q2

R4

Figure 1. Application Circuit for Half-Bridge

UVLO

GENERATOR

PULSE

UVLO

NOISE

CANCELLER

DELAY

R

S

Q

DRIVER

Load

FAN73901 Rev.01

8

V

B

7

HO

6

V

S

5

V

DD

4

LO

3

COM

FAN73901 Rev.01

Figure 2. Functional Block Diagram

Pin Configuration

FAN73901 — High- and Low Side, Gate-Drive IC

1

HIN

2

LIN

FAN73901

COM

Pin Definitions

Pin # Name Description

1 HIN Logic Input for High-Side Gate Driver Output

2 LIN Logic Input for Low-Side Gate Driver Output

3 COM Low-Side Driver Return

4 LO Low-Side Driver Output

5 V

6 V

7 HO High-Side Driver Output

8 V

DD

S

B

3

4LO

FAN73901 Rev.01

Figure 3. Pin Assignments (Top View)

Low-Side and Logic Part Supply Voltage

High-Voltage Floating Supply Return

High-Side Floating Supply

8

V

B

HO

7

V

6

S

V

5

DD

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 Characteristics Min. Max. Unit

V

S

V

B

V

HO

V

DD

V

LO

V

IN

/dt Allowable Offset Voltage Slew Rate 50 V/ns

dV

S

P

D

θ

JA

T

J

T

STG

Notes:

1. Mounted on 76.2 x 114.3 x 1.6mm PCB (FR-4 glass epoxy material).

2. 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

3. Do not exceed P

High-Side Floating Supply Offset Voltage VB-25 VB+0.3 V

High-Side Floating Supply Voltage -0.3 625.0 V

High-Side Floating Output Voltage HO VS-0.3 VB+0.3 V

Low-Side and Logic Fixed Supply Voltage -0.3 25.0 V

Low-Side Output Voltage LO -0.3 VDD+0.3 V

Logic Input Voltage (HIN and LIN) -0.3 VDD+0.3 V

Power Dissipation

(1)(2)(3)

Thermal Resistance, Junction-to-Ambient 200 °C/W

Junction Temperature +150 °C

Storage Temperature +150 °C

under any circumstances.

D

=25°C, unless otherwise specified.

A

0.625 W

FAN73901 — High- and Low Side, Gate-Drive IC

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

B

V

S

V

HO

V

DD

V

LO

V

IN

T

A

High-Side Floating Supply Voltage VS+10 VS+20 V

High-Side Floating Supply Offset Voltage 6-V

High-Side Output Voltage V

DD

S

600 V

V

B

Low-Side and Logic Supply Voltage 10 20 V

Low-Side Output Voltage COM V

Logic Input Voltage (HIN and LIN) COM V

DD

Operating Ambient Temperature -40 +125 °C

V