SUTEX HT0440LG Dual high voltage isolated mosfet driver Datasheet

HT0440
Dual High Voltage Isolated MOSFET Driver
Ordering Information
Input to Output
Isolation Voltage
Package Option
8-Pin Narrow Body SOIC
±400V
HT0440LG
Features
General Description
❏
±400V input to output isolation
❏
±700V isolation between outputs
❏
No external voltage supply required
❏
Dual isolated output drivers
❏
Option of internal or external clock
The Supertex HT0440 is a dual high voltage isolated driver
utilizing Supertex’s proprietary HVCMOS® technology. It is designed to drive discrete MOSFETs configured as bi-directional or
unidirectional switches. It can drive N-channel MOSFETs as high
side switches up to 400V. The HT0440 generates two independent DC isolated voltages to the outputs, VOUTA and VOUTB when
logic inputs A and B are at logic high. The internal clock of the
HT0440 can be disabled by applying an external clock signal to
the CLK pin. This allows the power dissipation and AC characteristics to be tailored to meet specific needs. The CLK pin should be
connected to ground when not in use. The HT0440 does not
require any external power supplies. The internal supply voltage
is supplied by either of the two logic inputs A or B when they are
at logic high.
Applications
❏
Telecommunications
❏
Modems
❏
Solid state relays
❏
High side switches
❏
High end audio switches
❏
Avionics
❏
ATE
Pin Configuration
Absolute Maximum Ratings1
Input to Output Isolation Voltage, VISO
Logic Input Voltage, VA, VB
Operating Temperature
Storage Temperature
Soldering Temperature2
±400V
–0.5 to +7.0V
–40°C to +85°C
–55°C to +150°C
A
1
8
B
300°C
CLK
2
7
GND
–VOUTA
3
6
–VOUTB
+VOUTA
4
5
+VOUTB
Note:
1. All voltages are referenced to ground.
2. Distance of 1.6mm from case for 10 seconds.
top view
SO-8
For detailed circuit and application information, please
refer to application note #AN-D26.
Note: See Package Outline section for dimensions.
12/13/01
Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability
indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to
workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the
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Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.
HT0440
Electrical Characteristics
(Over recommended operating conditions, TA = 25°C unless otherwise specified)
DC Characteristics
Symbol
IIHA + IIHB
VOUTA,
VOUTB
Parameter
Min
Typ
Total logic high input current
Output Voltage
Max
Unit
Conditions
300
µA
VA = 3.5V, VB = 3.5V, CLK = 0V
500
µA
VA = 3.5V, VB = 3.5V,
CLK = 500KHz
2.0
mA
VA = 3.5V, VB = 3.5V,
CLK = 2.0MHz
1.0
mA
VA = 5.5V, VB = 5.5V, CLK = 0V
2.0
mA
VA = 5.5V, VB = 5.5V,
CLK = 500KHz
6.0
V
VA = 3.15V, VB = 3.15V,
CLK = 0V, no load
5.0
V
VA = 3.15V, VB = 3.15V,
CLK = 500KHz, no load
6.0
V
VA = 3.15V, VB = 3.15V,
CLK = 2.0MHz, no load
10.0
V
VA = 4.5V, VB = 4.5V,
CLK = 0V, no load
8.0
V
VA = 4.5V, VB = 4.5V,
CLK = 500KHz, no load
IILA
Logic low input A current
10
µA
VA = 0.5V, VB = high
IILB
Logic low input B current
10
µA
VA = high, VB = 0.5V
IILQ
Quiescent current
10
µA
VA = 0.5V, VB = 0.5V
VISO
Input to output isolation voltage
±400
V
VCISO
Output to output isolation voltage
±700
V
AC Characteristics
Symbol
Parameter
Min
Typ
Max
Unit
Conditions
td(ON)
Turn on delay time
50
µs
See timing diagram and test circuit
tr
Rise time
650
µs
CLK = 0V, CL = 600pF
td(OFF)
Turn off delay time
150
µs
tf
Fall time
3.0
ms
Max
Unit
Recommended Conditions
Symbol
Parameter
Min
Typ
CLK
External clock frequency
0.5
2.0
MHz
VIHCLK
Clock input high voltage
3.15
5.5
V
VILCLK
Clock input low voltage
0
0.5
V
VIH
Logic input high voltage
3.15
5.5
V
VIL
Logic input low voltage
0
0.5
V
TA
Operating temperature
-40
+85
°C
2
Conditions
HT0440
Truth Table
A
B
CLK
VOUTA
VOUTB
Internal Clock
0
0
0
Off
Off
Off
0
Off
On
On
0
0
On
Off
On
1
1
0
On
On
On
0
0
Clk
Off
Off
Off
Clk
Off
On
Off
0
Clk
On
Off
Off
1
Clk
On
On
Off
0
0
1
Block Diagram
Isolation
Barrier
CLK
2
Driver
A
A
1
8
B
Logic &
Internal
Clock
Driver
B
10R
10R
R
4
R
3
R
5
R
6
7
GND
R=158KΩ ±47%
Timing Diagram
4.5V
VA, VB
50%
50%
0V
90%
90%
VOUTA, VOUTB
10%
10%
td(ON) tr
td(OFF) tf
3
+
VOUTA
–
+
VOUTB
–
HT0440
Test Circuit
4.5V
1
A
0V
8
VOUTA
B
4
+
–
3
VOUTA
CL =
600pF
HT0440
2
7
CLK
GND
VOUTB
5
+
–
6
VOUTB
CL =
600pF
12/13/010
©2001 Supertex Inc. All rights reserved. Unauthorized use or reproduction prohibited.
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1235 Bordeaux Drive, Sunnyvale, CA 94089
TEL: (408) 744-0100 • FAX: (408) 222-4895
www.supertex.com
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