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FAN7371 — High-Current High-Side Gate Drive IC
November 2009
FAN7371
High-Current High-Side Gate Drive IC
Features
!
Floating Channel for Bootstrap Operation to +600V
!
4A/4A Sourcing/Sinking Current Driving Capability
!
Common-Mode dv/dt Noise Canceling Circuit
!
3.3V and 5V Input Logic Compatible
!
Output In-phase with Input Signal
!
Under- Voltage Lockout for V
BS
!
25V Shunt Regulator on V
DD
and V
BS
!
8-Lead Small Outline Package (SOP)
Description
The FAN7371 is a monolithic high-side gate drive 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
S
=-9.8V (typical) for
V
BS
=15V.
The UVLO circuit prevents malfunction when V
BS
is
lower than the specified threshold voltage.
The high-current and low-output voltage drop feature
makes this device suitable for sustaine switch driver and
energy recovery switch driver in the Plasma Display
Panel application, motor drive inverter, switching power
supply, and high-power DC-DC converter applications.
8-SOP
Applications
!
High-Speed Gate Driver
!
Sustaine Switch Driver in PDP Application
!
Energy-Recovery Circuit Switch Driver in
PDP Application
!
High-Power Buck Converter
!
Motor Drive Inverter
Ordering Information
Part Number
FAN7371M
(1)
FAN7371MX
(1)
Package
8-SOP
Operating
Temperature Range
-40°C ~ 125°C
Eco Status
RoHS
Packing Method
Tube
Tape & Reel
Note:
1. These devices passed wave soldering test by JESD22A-111.
For Fairchild’s definition of Eco Status, please visit:
http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2008 Fairchild Semiconductor Corporation
FAN7371 Rev. 1.0.2
www.fairchildsemi.com
FAN7371 — High-Current High-Side Gate Drive IC
Typical Application Diagrams
15V
VS
15V
R
BOOT1
D
BOOT1
Q3
R3
R4
L1
5
C
BOOT1
R1
D
BOOT2
R2
Q1
8
7
6
5
C2
R5
C
BOOT2
R6
R8
4 GND
NC
5
6
Q2
Q4
R7
D1
D2
D4
C
BOOT3
D3
8
7
6
5
D
BOOT3
R
BOOT3
FAN7371
8 V
B
7
6
HO
V
S
NC
V
DD
1
IN
2
FAN7371
1
V
DD
IN
V
B
HO
V
S
NC
IN3
NC 3
GND 4
IN1
2
3 NC
4 GND
To Pannel
FAN7371
1
V
DD
IN
V
B
HO
V
S
FAN7371
8 V
B
7
HO
V
S
NC
V
DD
1
IN
2
C3
IN2
C1
2
IN4
3 NC
NC 3
GND 4
Energy Recovery Circuit Part
Sustain Drive Part
FAN7371 Rev.03
Figure 1. Floated Bidirectional Switch and Half-Bridge Driver: PDP application
15V
R
BOOT
D
BOOT
V
IN
FAN7371
1 V
DD
PWM
C1
V
B
8
HO
R1
2 IN
3 NC
4 GND
7
C
BOOT
R2
L1
V
S
6
NC
5
D1
C2
V
OUT
FAN7371 Rev.01
Figure 2. Step-Down (Buck) DC-DC Converter Application
© 2008 Fairchild Semiconductor Corporation
FAN7371 Rev. 1.0.2
2
www.fairchildsemi.com
FAN7371 — High-Current High-Side Gate Drive IC
Internal Block Diagram
V
DD
GND
1
25V
V
DD
UVLO
Shoot-through current
compensated gate driver
8
V
B
4
PULSE
GENERATOR
IN
2
110K
NOISE
CANCELLER
R
S
R
Q
7
25V
HO
6
Pins 3 and 5 are no connection.
FAN7371 Rev.04
V
S
Figure 3. Functional Block Diagram
Pin Configuration
V
DD
IN
NC
GND
1
2
3
4
8
V
B
HO
V
S
NC
FAN7371
7
6
5
FAN7371 Rev.01
Figure 4. Pin Configuration (Top View)
Pin Definitions
Pin #
1
2
3
4
5
6
7
8
Name
V
DD
IN
NC
GND
NC
V
S
HO
V
B
Supply Voltage
Description
Logic Input for High-Side Gate Driver Output
No Connection
Ground
No Connection
High-Voltage Floating Supply Return
High-Side Driver Output
High-Side Floating Supply
© 2008 Fairchild Semiconductor Corporation
FAN7371 Rev. 1.0.2
3
www.fairchildsemi.com
FAN7371 — High-Current High-Side Gate Drive IC
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only. T
A
=25°C unless otherwise specified.
Symbol
V
S
V
B
V
HO
V
DD
V
IN
dV
S
/dt
P
D
θ
JA
T
J
T
STG
T
A
Notes:
2
Characteristics
High-Side Floating Offset Voltage
High-Side Floating Supply Voltage
(2)
High-Side Floating Output Voltage
Low-Side and Logic Supply Voltage
(2)
Logic Input Voltage
Allowable Offset Voltage Slew Rate
Power Dissipation
(3, 4, 5)
Thermal Resistance
Junction Temperature
Storage Temperature
Operating Ambient Temperature
Min.
V
B
-V
SHUNT
-0.3
V
S
-0.3
-0.3
-0.3
Max.
V
B
+0.3
625.0
V
B
+0.3
V
SHUNT
V
DD
+0.3
± 50
0.625
200
Unit
V
V
V
V
V
V/ns
W
°C/W
°C
°C
°C
-55
-55
-40
+150
+150
+125
3
4
5
This IC contains a shunt regulator on V
DD
and V
BS
with a normal breakdown voltage of 25V. Please note that this
supply pin should not be driven by a low-impedance voltage source greater than the V
SHUNT
specified in the
Electrical Characteristics section
Mounted on 76.2 x 114.3 x 1.6mm PCB (FR-4 glass epoxy material).
Refer to the following standards:
JESD51-2: Integral circuits thermal test method environmental conditions, natural convection, and
JESD51-3: Low effective thermal conductivity test board for leaded surface mount packages.
Do not exceed power dissipation (P
D
) under any circumstances.
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
V
BS
V
S
V
HO
V
IN
V
DD
Parameter
High-Side Floating Supply Voltage
High-Side Floating Supply Offset Voltage
High-Side Output Voltage
Logic Input Voltage
Supply Voltage
Min.
V
S
+10
6-V
DD
V
S
GND
10
Max.
V
S
+20
600
V
B
V
DD
20
Unit
V
V
V
V
V
© 2008 Fairchild Semiconductor Corporation
FAN7371 Rev. 1.0.2
4
www.fairchildsemi.com
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