-550V Full Bridge Gate Driver
Features
•
•
•
•
•
•
Full Bridge Gate Driver
Internal High Voltage Level Shift Function
Negative 550V Lamp Supply Voltage
3V to 12V CMOS Logic Compatible
8V to 12V Input Supply Voltage
No External Bootstrap Capacitors Needed
MX6895
Description
Built on Clare’s high voltage integrated circuit (HVIC)
technology, the MX6895 combines high-side and
low-side N-channel power MOSFET drivers in a full
bridge configuration. The circuit is optimally configured
to be used as a commutator for High Intensity
Discharge (HID) lamps.
Applications
•
•
•
•
•
•
Commutator for High Intensity Discharge Lamps
Vehicle Head Lamps
Outdoor/Street Lighting
Multimedia Projectors
Retail Accent Lighting
Warehouse Lighting
Ordering Information
Part
MX6895BE
MX6895BETR
Description
SOIC-16 Tube (49/Tube)
SOIC-16 Tape & Reel (2500/Reel)
Pb
Functional Block Diagram and Typical Application Circuit
V
DD
+10V
8
V
DD
16
250Ω
RoHS
2002/95/EC
e
3
GND
INA
7
1
INA
CONTROL
LOGIC
INB
G2
14
G1
250Ω
M1
V
Z
=18V
IGNITER
250Ω
M2
INB
6
13
A1
GATE
DRIVERS
2
A2
G4
4
V
Z
=18V
G3
11
250Ω
M3
V
Z
=18V
-550VDC
M4
V
PP
9
V
PP
V
Z
=18V
July 29, 2011
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1
MX6895
1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Package Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Pin Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Thermal Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5 Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.6 DC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7 AC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
3
3
3
4
4
4
5
2. Functional Block Diagram and Truth Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3. Input / Output Switching Waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4. Manufacturing Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Moisture Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 ESD Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4 Mechanical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
8
8
8
9
2
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July 29, 2011
MX6895
1 Specifications
1.1 Package Pinout
1.2 Pin Description
Pin#
Name
G2
A2
NC
G4
NC
INB
INA
V
DD
V
PP
NC
G3
NC
A1
G1
NC
GND
Description
High-Side Gate Driver 2 Output
High-Side Gate Driver 2
Floating DC Power Return
No Connection
Low-Side Gate Driver 4 Output
No Connection
Control Input for High-Side Driver 2 and
Low-Side Driver 3
Control Input for High-Side Driver 1 and
Low-Side Driver 4
Logic Power Supply
High-Voltage Negative Lamp Supply
No Connection
Low-Side Gate Driver 3 Output
No Connection
High-Side Gate Driver 1
Floating DC Power Return
High-Side Gate Driver 1 Output
No Connection
Ground
1 - G2
2 - A2
3 - NC
4 - G4
5 - NC
6 - INB
7 - INA
8 - V
DD
16 - GND
15 - NC
14 - G1
13 - A1
12 - NC
11 - G3
10 - NC
9 - V
PP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ESD Warning:
ESD (electrostatic discharge) sensitive
device. Although the MX6895 features proprietary
ESD protection circuitry, permanent damage may be
sustained if it is subjected to high energy electrostatic
discharges. Proper ESD precautions are
recommended to avoid performance degradation or
loss of functionality.
Note:
The exposed thermal pad of the device package
must be connected to GND (ground).
1.3 Absolute Maximum Ratings
Parameter
Power Supply Voltage Range
Lamp Supply Voltage, Max
Input Voltage
Symbol
V
DD
V
PP
V
INA
, V
INB
V
G1
-V
A1
V
G2
-V
A2
V
G3
-V
PP
V
G4
-V
PP
P
D
T
J
C
ISS(LOAD)
T
STG
Min
-0.3
-
-0.3
Typ
-
-
-
Max
15
-550
V
DD
+0.3
Units
V
V
V
Gate Driver Output Voltage
-0.3
-
20
V
Power Dissipation
Operating Junction Temperature
Input Capacitance of External Power
Transistors
Storage Temperature
-
-
0.4
-50
-
-
-
-
2.9
150
1.5
150
W
°C
nF
°C
Absolute maximum electrical ratings are at 25°C.
Voltages with respect to GND=0V.
Absolute maximum ratings are stress ratings. Stresses in
excess of these ratings can cause permanent damage to
the device. Functional operation of the device at conditions
beyond those indicated in the operational sections of this
data sheet is not implied.
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MX6895
1.4 Thermal Characteristics
Parameter
Thermal Resistance, Junction-to-Ambient
1
1
Symbol
R
JA
Minimum
-
Typical
42
Maximum
-
Unit
°C/W
4-layer PCB
1.5 Recommended Operating Conditions
Parameter
Power Supply Voltage
Lamp Supply Voltage
Logic Input Voltage, High
Logic Input Voltage, Low
Ambient Temperature
Symbol
V
DD
V
PP
V
INAH
, V
INBH
V
INAL
, V
INBL
T
A
Min
8
-50
2.5
0
-40
Typ
10
-
V
DD
0
-
Max
12
-550
V
DD
0.5
105
Units
V
V
V
V
°C
1.6 DC Electrical Characteristics
Parameter
Power Supply Current
Power Supply Current
Power Supply Current
High Input Current
Low Input Current
High-Side Gate Driver
Output Voltage
High-Side Gate Driver
Output Voltage
Low-Side Gate Driver
Output Voltage
High-Side Gate Driver
Output Source Current
Low-Side Gate Driver
Output Source Current
Conditions
V
DD
=10V, V
PP
= -85V, V
INA
=V
DD
, V
INB
=V
DD
V
DD
=10V, V
PP
= -85V, V
INA
=V
DD
, V
INB
=V
DD
V
DD
=10V, V
PP
= -85V, V
INA
=2.5V, V
INB
=2.5V
V
INAH
=10V, V
INBH
=10V
V
INAL
=0V, V
INBL
=0V
V
DD
=8V, V
PP
= -85V, V
A1
=V
A2
=0V
V
DD
=10V, V
PP
= -85V, V
A1
=V
A2
=0V
V
DD
=8V to 10V, V
PP
= -85V
V
DD
=10V, V
PP
= -85V, V
A1
=V
A2
=0V, V
G1
-V
A1
=0V,
V
G2
-V
A2
=0V
V
DD
=8V to 10V, V
PP
= -85V, V
G3
-V
PP
=0V,
V
G4
-V
PP
=0V
Symbol
I
DD
I
PP
I
DD
I
INAH
, I
INBH
I
INAL
, I
INBL
(V
G1
-V
A1
), (V
G2
-V
A2
)
(V
G1
-V
A1
), (V
G2
-V
A2
)
(V
G3
-V
PP
), (V
G4
-V
PP
)
(I
G1
, I
G2)
(I
G3
, I
G4
)
Min
-
-
-
-
-
7
9
7
-
-
Typ
1
0.8
1.5
-
-
-
-
16
-3.9
-14
Max
2
2
4
10
10
8
10
18
-
-
Units
mA
mA
mA
A
A
V
V
V
mA
mA
4
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July 29, 2011
MX6895
1.7 AC Electrical Characteristics
Test Conditions: V
DD
=10V, V
PP
=-85V, V
A1
=V
A2
=0V, T
A
=25° unless otherwise specified.
Parameter
Operating Frequency
High-Side ON Time @ V
OUT
=5V
High-Side OFF Time @ V
OUT
=2V
Low-Side ON Time @ V
OUT
=5V
Low-Side OFF Time @ V
OUT
=2V
Notes:
Conditions
-
C
LOAD
=1nF, R
S
=0
C
LOAD
=1nF, R
S
=250
C
LOAD
=1nF, R
S
=0
C
LOAD
=1nF, R
S
=250
C
LOAD
=1nF, R
S
=0
C
LOAD
=1nF, R
S
=250
C
LOAD
=1nF, R
S
=0
C
LOAD
=1nF, R
S
=250
Symbol
f
OP
t
ONH
t
OFFH
t
ONL
t
OFFL
Minimum
-
-
-
-
-
-
-
-
-
Typical
0.5
3.48
3.77
0.31
0.66
2.46
2.44
0.29
0.76
Maximum
-
-
-
-
-
-
-
-
-
Units
kHz
s
s
s
s
1. V
OUT
is the voltage on C
LOAD
at the defined time.
2. V
OUT
= V
G1
-V
A1
, or V
OUT
= V
G2
-V
A2
, or V
OUT
= V
G3
-V
PP
, or V
OUT
= V
G4
-V
PP
Figure 1. AC Test Circuit
8
V
DD
GND
16
1
7
6
G2
INA
14
G1
INB
A1
A2
G4
11
G3
9
V
PP
CL
R
S
13
2
4
CL
R
S
R
S
CL
V
G1
-V
A1
V
A1
V
A2
V
G2
-V
A2
MX6895
R
S
CL
V
G4
-V
PP
V
G3
-V
PP
V
pp
Figure 2. AC Switching Waveforms
High
Low
t
V
G1
-V
A1
V
G2
-V
A2
V
G3
-V
PP
V
G4
-V
PP
C
LOAD
=1nF
2V
t
t
ON
t
OFF
5V
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