Isolated mosfet driver MICROCHIP HT0440LG-G featuring dual outputs and internal clock disable function
Product Overview
The Supertex HT0440 is a dual, high voltage, isolated MOSFET driver utilizing Supertexs proprietary HVCMOS technology. It is designed to drive discrete MOSFETs configured as bidirectional or unidirectional switches, capable of driving N-channel MOSFETs as high-side switches up to 400V. The device 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 can be disabled by an external clock signal to the CLK pin, allowing for tailored power dissipation and AC characteristics. The HT0440 requires no external power supplies, as the internal supply voltage is derived from the logic inputs A or B when they are at logic high.
Product Attributes
- Brand: Supertex inc.
- Website: www.supertex.com
- Technology: HVCMOS
- Certifications: RoHS compliant package (-G denotes lead-free / RoHS compliant)
Technical Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Input to output isolation voltage (VISO) | ±400V | --- |
| Output to output isolation voltage (VCISO) | ±700V | --- |
| Logic input voltage (VA, VB) | -0.5 to +7.0V | --- |
| Maximum junction temperature | +125°C | --- |
| Storage temperature | -55°C to +150°C | --- |
| External clock frequency (CLK) | 0.5 - 2.0 MHz | --- |
| Clock input high voltage (VIHCLK) | 3.15 - 5.5V | --- |
| Clock input low voltage (VILCLK) | 0 - 0.5V | --- |
| Logic input high voltage (VIH) | 3.15 - 5.5V | --- |
| Logic input low voltage (VIL) | 0 - 0.5V | --- |
| Operating temperature (TA) | -40 to +85 °C | --- |
| Turn-ON delay time (td(ON)) | - - 50 µs | CLK = 0V, CL = 600pF |
| Rise time (tr) | - - 650 µs | See timing diagram and test circuit |
| Turn-OFF delay time (td(OFF)) | - - 150 µs | --- |
| Fall time (tf) | - - 3.0 ms | --- |
| Total logic high input current (IHA + IHB) | - - 300 µA | VA = 3.5V, VB = 3.5V, CLK = 0V |
| Total logic high input current (IHA + IHB) | - - 500 µA | VA = 3.5V, VB = 3.5V, CLK = 500kHz |
| Total logic high input current (IHA + IHB) | - - 2.0 mA | VA = 3.5V, VB = 3.5V, CLK = 2.0MHz |
| Total logic high input current (IHA + IHB) | - - 1.0 mA | VA = 5.5V, VB = 5.5V, CLK = 0V |
| Total logic high input current (IHA + IHB) | - - 2.0 mA | VA = 5.5V, VB = 5.5V, CLK = 500kHz |
| Output voltage (VOUTA, VOUTB) | 6.0 - - V | VA = 3.15V, VB = 3.15V, CLK = 0V, no load |
| Output voltage (VOUTA, VOUTB) | 5.0 - - V | VA = 3.15V, VB = 3.15V, CLK = 500kHz, no load |
| Output voltage (VOUTA, VOUTB) | 6.0 - - V | VA = 3.15V, VB = 3.15V, CLK = 2.0MHz, no load |
| Output voltage (VOUTA, VOUTB) | 10.0 - - V | VA = 4.5V, VB = 4.5V, CLK = 0V, no load |
| Output voltage (VOUTA, VOUTB) | 8.0 - - V | VA = 4.5V, VB = 4.5V, CLK = 500kHz, no load |
| Logic low input A current (IILA) | - - 10 µA | VA = 0.5V, VB = high |
| Logic low input B current (IILB) | - - 10 µA | VA = high, VB = 0.5V |
| Quiescent current (IILQ) | - - 10 µA | VA = 0.5V, VB = 0.5V |
| Typical Thermal Resistance (10-Lead DFN) | 40 °C/W | θja |
| Typical Thermal Resistance (8-Lead SOIC) | 101 °C/W | θja |
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