Microchip Technology, Inc. High Speed 4-Channel MOSFET Driver MD1822

Description
MD1822 is a high speed, four channel MOSFET driver designed to drive high voltage P- and N-channel MOSFETs for medical ultrasound applications and other applications requiring a high output current for a capacitive load. The high-speed input stage of the MD1822 can operate from a 1.8 to 5.0V logic interface with an optimum operating input signal range of 1.8 to 3.3V. An adaptive threshold circuit is used to set the level translator switch threshold to the average of the input logic 0 and logic 1 levels. The input logic levels may be ground referenced, even though the driver is putting out bipolar signals. The level translator uses a proprietary circuit, which provides DC coupling together with high-speed operation. The output stage of the MD1822 has separate power connections enabling the output signal L and H levels to be chosen independently from the supply voltages used for the majority of the circuit. As an example, the input logic levels may be 0 and 1.8V, the control logic may be powered by +5.0 and -5.0V, and the output L and H levels may be varied anywhere over the range of -5.0 to +5.0V. The output stage is capable of peak currents of up to ±2.0A, depending on the supply voltages used and load capacitance present. The PE pin serves a dual purpose. First, its logic H level is used to compute the threshold voltage level for the channel input level translators. Second, when PE is low, the outputs are disabled, with the A & C output high and the B & D output low. This assists in properly precharging the AC coupling capacitors that may be used in series in the gate drive circuit of an external PMOS and NMOS transistor pair. Additional Features Mixed inversion MOSFET driver 6.0ns rise and fall time 2.0A peak output source/sink current 1.8 to 5.0V input CMOS compatible 5.0 to 10V total supply voltage Smart logic threshold Low jitter design Four matched channels Drives two P- and two N-channel MOSFETs Outputs can swing below ground Low inductance, quad flat no-lead package High performance, thermally enhanced packaging
  • High Speed 4-Channel MOSFET Driver - MD1822 - Microchip Technology, Inc.
    Microchip Technology, Inc.
Description
MD1822 is a high speed, four channel MOSFET driver designed to drive high voltage P- and N-channel MOSFETs for medical ultrasound applications and other applications requiring a high output current for a capacitive load. The high-speed input stage of the MD1822 can operate from a 1.8 to 5.0V logic interface with an optimum operating input signal range of 1.8 to 3.3V. An adaptive threshold circuit is used to set the level translator switch threshold to the average of the input logic 0 and logic 1 levels. The input logic levels may be ground referenced, even though the driver is putting out bipolar signals. The level translator uses a proprietary circuit, which provides DC coupling together with high-speed operation. The output stage of the MD1822 has separate power connections enabling the output signal L and H levels to be chosen independently from the supply voltages used for the majority of the circuit. As an example, the input logic levels may be 0 and 1.8V, the control logic may be powered by +5.0 and -5.0V, and the output L and H levels may be varied anywhere over the range of -5.0 to +5.0V. The output stage is capable of peak currents of up to ±2.0A, depending on the supply voltages used and load capacitance present. The PE pin serves a dual purpose. First, its logic H level is used to compute the threshold voltage level for the channel input level translators. Second, when PE is low, the outputs are disabled, with the A & C output high and the B & D output low. This assists in properly precharging the AC coupling capacitors that may be used in series in the gate drive circuit of an external PMOS and NMOS transistor pair. Additional Features Mixed inversion MOSFET driver 6.0ns rise and fall time 2.0A peak output source/sink current 1.8 to 5.0V input CMOS compatible 5.0 to 10V total supply voltage Smart logic threshold Low jitter design Four matched channels Drives two P- and two N-channel MOSFETs Outputs can swing below ground Low inductance, quad flat no-lead package High performance, thermally enhanced packaging
Datasheet
Datasheet Summary
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The MD1822 is a high-speed, four-channel MOSFET driver designed to drive high-voltage P-channel and N-channel MOSFETs for medical ultrasound and other capacitive load applications. It features two inverting and two non-inverting outputs with 6 ns rise and fall times, and peak source and sink currents of 2 A. The device operates with a logic input range of 1.8 V to 5 V and a total supply voltage of 5 V to 10 V, with separate power connections for output high and low levels enabling bipolar output swings from -5 V to +5 V. It is packaged in a 16-lead QFN with a 3 mm x 3 mm footprint and includes a power enable (PE) pin for output control and adaptive threshold logic. The device meets RoHS compliance and operates from -20 °C to +85 °C ambient temperature.

Datasheet Summary
Powered by GS/AI

The MD1822 is a high-speed, four-channel MOSFET driver designed to drive high-voltage P-channel and N-channel MOSFETs for medical ultrasound and other capacitive load applications. It features two inverting and two non-inverting outputs with 6 ns rise and fall times, and peak source and sink currents of 2 A. The device operates with a logic input range of 1.8 V to 5 V and a total supply voltage of 5 V to 10 V, with separate power connections for output high and low levels enabling bipolar output swings from -5 V to +5 V. It is packaged in a 16-lead QFN with a 3 mm x 3 mm footprint and includes a power enable (PE) pin for output control and adaptive threshold logic. The device meets RoHS compliance and operates from -20 °C to +85 °C ambient temperature.

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Supplier Links
High Speed 4-Channel MOSFET Driver - MD1822 - Microchip Technology, Inc.
Microchip Technology, Inc.
Chandler, AZ, United States
High Speed 4-Channel MOSFET Driver
MD1822
High Speed 4-Channel MOSFET Driver MD1822
MD1822 is a high speed, four channel MOSFET driver designed to drive high voltage P- and N-channel MOSFETs for medical ultrasound applications and other applications requiring a high output current for a capacitive load. The high-speed input stage of the MD1822 can operate from a 1.8 to 5.0V logic interface with an optimum operating input signal range of 1.8 to 3.3V. An adaptive threshold circuit is used to set the level translator switch threshold to the average of the input logic 0 and logic 1 levels. The input logic levels may be ground referenced, even though the driver is putting out bipolar signals. The level translator uses a proprietary circuit, which provides DC coupling together with high-speed operation. The output stage of the MD1822 has separate power connections enabling the output signal L and H levels to be chosen independently from the supply voltages used for the majority of the circuit. As an example, the input logic levels may be 0 and 1.8V, the control logic may be powered by +5.0 and -5.0V, and the output L and H levels may be varied anywhere over the range of -5.0 to +5.0V. The output stage is capable of peak currents of up to ±2.0A, depending on the supply voltages used and load capacitance present. The PE pin serves a dual purpose. First, its logic H level is used to compute the threshold voltage level for the channel input level translators. Second, when PE is low, the outputs are disabled, with the A & C output high and the B & D output low. This assists in properly precharging the AC coupling capacitors that may be used in series in the gate drive circuit of an external PMOS and NMOS transistor pair. Additional Features Mixed inversion MOSFET driver 6.0ns rise and fall time 2.0A peak output source/sink current 1.8 to 5.0V input CMOS compatible 5.0 to 10V total supply voltage Smart logic threshold Low jitter design Four matched channels Drives two P- and two N-channel MOSFETs Outputs can swing below ground Low inductance, quad flat no-lead package High performance, thermally enhanced packaging

MD1822 is a high speed, four channel MOSFET driver designed to drive high voltage P- and N-channel MOSFETs for medical ultrasound applications and other applications requiring a high output current for a capacitive load. The high-speed input stage of the MD1822 can operate from a 1.8 to 5.0V logic interface with an optimum operating input signal range of 1.8 to 3.3V. An adaptive threshold circuit is used to set the level translator switch threshold to the average of the input logic 0 and logic 1 levels. The input logic levels may be ground referenced, even though the driver is putting out bipolar signals. The level translator uses a proprietary circuit, which provides DC coupling together with high-speed operation. The output stage of the MD1822 has separate power connections enabling the output signal L and H levels to be chosen independently from the supply voltages used for the majority of the circuit. As an example, the input logic levels may be 0 and 1.8V, the control logic may be powered by +5.0 and -5.0V, and the output L and H levels may be varied anywhere over the range of -5.0 to +5.0V. The output stage is capable of peak currents of up to ±2.0A, depending on the supply voltages used and load capacitance present. The PE pin serves a dual purpose. First, its logic H level is used to compute the threshold voltage level for the channel input level translators. Second, when PE is low, the outputs are disabled, with the A & C output high and the B & D output low. This assists in properly precharging the AC coupling capacitors that may be used in series in the gate drive circuit of an external PMOS and NMOS transistor pair.

Additional Features

  • Mixed inversion MOSFET driver
  • 6.0ns rise and fall time
  • 2.0A peak output source/sink current
  • 1.8 to 5.0V input CMOS compatible
  • 5.0 to 10V total supply voltage
  • Smart logic threshold
  • Low jitter design
  • Four matched channels
  • Drives two P- and two N-channel MOSFETs
  • Outputs can swing below ground
  • Low inductance, quad flat no-lead package
  • High performance, thermally enhanced packaging
Supplier's Site Datasheet

Technical Specifications

  Microchip Technology, Inc.
Product Category Metal-Oxide Semiconductor FET (MOSFET)
Product Number MD1822
Product Name High Speed 4-Channel MOSFET Driver
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