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 1 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. 4 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 • FAX: (408) 222-4895 www.supertex.com