HT0440 SUTEX | Alldatasheet
Document overview
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Technical content
Features
❏ ±400V input to output isolation ❏ ±700V isolation between outputs ❏ No external voltage supply required ❏ Dual isolated output drivers ❏ Option of internal or external clock
Applications
❏ Telecommunications ❏ Modems ❏ Solid state relays ❏ High side switches ❏ High end audio switches ❏ Avionics ❏ ATE Absolute Maximum Ratings1 Input to Output Isolation Voltage, VISO ±400V Logic Input Voltage, VA, VB –0.5 to +7.0V Operating Temperature –40 °C to +85°C Storage Temperature –55 °C to +150°C Soldering Temperature2 300°C Note: 1. All voltages are referenced to ground. 2. Distance of 1.6mm from case for 10 seconds. Pin Configuration For detailed circuit and application information, please refer to application note #AN-D26. General Description The Supertex HT0440 is a dual high voltage isolated driver utilizing Supertex’s proprietary HVCMOS® technology. It is de- signed 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 indepen- dent DC isolated voltages to the outputs, V OUTA 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 character- istics 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. AB CLK GND OUTA –VOUTB +VOUTA +VOUTB Input to Output Package Option Isolation Voltage 8-Pin Narrow Body SOIC ±400V HT0440LG 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 liabi lity 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 c hange without notice. For the latest product specifications, refer to the Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most curre nt databook or to the Legal/Disclaimer page on the Supertex website.
Electrical Characteristics
(Over recommended operating conditions, TA = 25°C unless otherwise specified) DC Characteristics Symbol Parameter Min Typ Max Unit Conditions IIHA + IIHB Total logic high input current 300 µAV A = 3.5V, VB = 3.5V, CLK = 0V 500 µAV A = 3.5V, VB = 3.5V, CLK = 500KHz 2.0 mA V A = 3.5V, VB = 3.5V, CLK = 2.0MHz 1.0 mA V A = 5.5V, VB = 5.5V, CLK = 0V 2.0 mA V A = 5.5V, VB = 5.5V, CLK = 500KHz VOUTA, Output Voltage 6.0 V V A = 3.15V, VB = 3.15V, VOUTB CLK = 0V, no load 5.0 V V A = 3.15V, VB = 3.15V, CLK = 500KHz, no load 6.0 V V A = 3.15V, VB = 3.15V, CLK = 2.0MHz, no load 10.0 V V A = 4.5V, VB = 4.5V, CLK = 0V, no load 8.0 V V A = 4.5V, VB = 4.5V, CLK = 500KHz, no load IILA Logic low input A current 10 µAV A = 0.5V, VB = high IILB Logic low input B current 10 µAV A = high, VB = 0.5V IILQ Quiescent current 10 µAV A = 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 Recommended Conditions Symbol Parameter Min Typ Max Unit Conditions 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 HT0440
90% 10% 50% 50% 90% 10% 4.5V VOUTA, VOUTB td(ON) tr td(OFF) tf VA, VB Logic & Internal Clock Driver A Driver B VOUTA VOUTB CLK A B GND Isolation Barrier 10R R R R R10R R=158KΩ ±47% Truth Table AB CLK V OUTAV OUTB Internal Clock
000 O f f O ff Off
00 O f f O n O n
00 O n O f f O n
110 O n On On
00 Clk Off Off Off
0 Clk Off On Off
0 Clk On Off Off
11 Clk On On Off
CL = 600pF VOUTB CL = 600pF 4.5V 0V V OUTA A B VOUTB CLK GND
1235 Bordeaux Drive, Sunnyvale, CA 94089
TEL: (408) 744-0100 • FAX: (408) 222-4895 www.supertex.com 12/13/010 ©2001 Supertex Inc. All rights reserved. Unauthorized use or reproduction prohibited.