Analog Devices Inc./Maxim Integrated

The ADuM4136 is a single-channel gate driver specifically optimized for driving insulated gate bipolar transistors (IGBTs). Analog Devices, Inc.,iCoupler®technology provides isolation between the input signal and the output gate drive.Operation with unipolar or bipolar secondary supplies is possible, allowing negative gate drive if needed.The Analog Devices chip scale transformers also provide isolated communication of control information between the high voltage and low voltage domains of the chip. Information on the status of the chip can be read back from dedicated outputs. Control of resetting the device after a fault on the secondary side is performed on the primary side of the device.Integrated onto the ADuM4136 is a desaturation detection circuit that provides protection against high voltage short-circuit IGBT operation. The desaturation protection contains noise reducing features such as a 312 ns (typical) masking time after a switching event to mask voltage spikes due to initial turn-on. An internal 537 μA (typical) current source allows low device count, and the internal blanking switch allows the addition of an external current source if more noise immunity is needed.The secondary UVLO is set to 12 V with common IGBT threshold levels taken into consideration.ApplicationsMOSFET/IGBT gate driversPhotovoltaic (PV) invertersMotor drivesPower supplies

The ADuM41371is a single-channel gate driver specifically optimized for driving insulated gate bipolar transistors (IGBTs). Analog Devices, Inc.,iCoupler®technology provides isolation between the input signal and the output gate drive.The Analog Devices chip scale transformers also provide isolated communication of control information between the high voltage and low voltage domains of the chip. Information on the status of the chip can be read back from the dedicated fault outputs. The ADuM4137 provides isolated fault reporting for overcurrent events, remote temperature overheating events, undervoltage lockout (UVLO), and thermal shutdown (TSD)Integrated onto the ADuM4137 is an overcurrent detection feature that protects the IGBT in case of overcurrent events. The split emitter overcurrent detection is coupled with a high speed, two-level turn off in case of faults.The ADuM4137 provides a Miller clamp control signal for the external metal-oxide semiconductor field effect transistor (MOSFET) to provide robust IGBT turn off with a single rail supply when the gate voltage drops below 2.0 V (typical) and above GND2. Operation with unipolar secondary supplies is possible, with or without the Miller clamp operation.A low gate voltage detection circuit can trigger a fault if the gate voltage does not go above the internal threshold (VVL) within the time allowed from turn on (tDVL). This circuit allows detection of IGBT device failures that exhibit gate shorts or other causes of weak drive.The secondary falling UVLO is set to 11.24 V (typical) for common IGBT two-level plateau voltage levels.The ADuM4137 provides for in field programming of temperature. Two temperature sensor pins allow isolated monitoring of system temperatures at the IGBTs, sensing diode gains and offsets by means of a serial port interface (SPI) bus on the primary side of the device. Values are stored on an EEPROM located on the secondary side. Additionally, programming is available for specific voltage offsets, temperature sensing reporting frequencies, and important delays.The ASC pin on the secondary side on the ADuM4137 allows the driver to be switched on from the secondary side if no faults are present.ApplicationsMOSFET/IGBT gate driversPhotovoltaic (PV) invertersMotor drivesPower supplies1Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329. Other patents pending.

The ADuM4138 is a single-channel gate driver optimized for driving insulated gate bipolar transistors (IGBTs). Analog Devices, Inc.,iCoupler®technology provides isolation between the input signal and the output gate drive.The Analog Devices chip scale transformers also provide isolated communication of control information between the high voltage and low voltage domains of the chip. Information on the status of the chip can be read back from the dedicated outputs.The ADuM4138 includes an isolated flyback controller, allowing simple secondary voltage generation.Overcurrent detection is integrated in the ADuM4138 to protect the IGBT in case of desaturation and/or overcurrent events. The overcurrent detection is coupled with a high speed, two-level turn off function in case of faults.The ADuM4138 provides a Miller clamp control signal for a metal-oxide semiconductor field effect transistor (MOSFET) to provide IGBT turn off, with a single rail supply when the Miller clamp voltage threshold drops below 2 V (typical) above GND2. Operation with unipolar secondary supplies is possible with or without the Miller clamp operation.A low gate voltage detection circuit can trigger a fault if the gate voltage does not rise above the internal threshold within the time allowed after turn on (12.8 µs typical). The low voltage detection circuit detects IGBT device failures that exhibit gate shorts or other causes of weak drive.Two temperature sensor pins, TS1 and TS2, allow isolated monitoring of system temperatures at the IGBTs. The secondary undervoltage lockout (UVLO) is set to 11.2 V (typical) in accordance with common IGBT threshold levels.A serial peripheral interface (SPI) bus on the primary side of the device provides in field programming of temperature sensing diode gains and offsets to the ADuM4138. Values are stored on an electrically erasable programmable read-only memory (EEPROM) located on the secondary side of the device. In addition, programming is available for specific VDD2voltages, temperature sensing reporting frequencies, and overcurrent blanking times.The ADuM4138 provides isolated fault reporting for overcurrent events, remote temperature overheating events, UVLO, thermal shutdown (TSD), and desaturation detection.ApplicationsMOSFET and IGBT gate driversPhotovoltaic (PV) invertersMotor drivesPower supplies

The ADuM4221/ADuM4221-1/ADuM4221-2are 4 A isolated, half bridge gate drivers that employ the Analog Devices, Inc.,iCoupler®technology to provide independent and isolated high-side and low-side outputs. The ADuM4221/ADuM4221-1/ADuM4221-2 provide 5700 V rms isolation in an increased creepage wide body, 16-lead SOIC_IC. Combining high speed CMOS and monolithic transformer technology, these isolation components provide outstanding performance characteristics superior to the alternatives, such as the combination of pulse transformers and gate drivers.The isolators operate with a logic input voltage ranging from 2.5 V to 6.5 V, providing compatibility with lower voltage systems. In comparison to gate drivers employing high voltage level translation methodologies, the ADuM4221/ADuM4221-1/ADuM4221-2 offer the benefit of true, galvanic isolation between the input and each output.The ADuM4221/ADuM4221-1/ADuM4221-2 each have built in overlap protection and allow dead time adjustment. A single resistor between the dead time pin (DT) and the GND1pin sets the dead time on the secondary side between the high-side and the low-side outputs.An internal thermal shutdown (TSD) sets outputs low if the internal temperature on the ADuM4221/ADuM4221-1/ADuM4221-2 exceeds the TSD temperature. As a result, the ADuM4221/ADuM4221-1/ADuM4221-2 provide reliable control over the switching characteristics of the insulated gate bipolar transistor (IGBT)/metal-oxide semiconductor field effect transistor (MOSFET) configurations over a wide range of positive or negative switching voltages.ApplicationsSwitching power suppliesIsolated IGBT/MOSFET gate drivesIndustrial invertersGallium nitride (GaN)/silicon carbide (SiC) compatible1Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,239. Other patents pending.

TheADuM4221/ADuM4221-1/ADuM4221-2 are 4 A isolated, half bridge gate drivers that employ the Analog Devices, Inc.,iCoupler®technology to provide independent and isolated high-side and low-side outputs. The ADuM4221/ADuM4221-1/ADuM4221-2 provide 5700 V rms isolation in an increased creepage wide body, 16-lead SOIC_IC. Combining high speed CMOS and monolithic transformer technology, these isolation components provide outstanding performance characteristics superior to the alternatives, such as the combination of pulse transformers and gate drivers.The isolators operate with a logic input voltage ranging from 2.5 V to 6.5 V, providing compatibility with lower voltage systems. In comparison to gate drivers employing high voltage level translation methodologies, the ADuM4221/ADuM4221-1/ADuM4221-2 offer the benefit of true, galvanic isolation between the input and each output.The ADuM4221/ADuM4221-1/ADuM4221-2 each have built in overlap protection and allow dead time adjustment. A single resistor between the dead time pin (DT) and the GND1pin sets the dead time on the secondary side between the high-side and the low-side outputs.An internal thermal shutdown (TSD) sets outputs low if the internal temperature on the ADuM4221/ADuM4221-1/ADuM4221-2 exceeds the TSD temperature. As a result, the ADuM4221/ADuM4221-1/ADuM4221-2 provide reliable control over the switching characteristics of the insulated gate bipolar transistor (IGBT)/metal-oxide semiconductor field effect transistor (MOSFET) configurations over a wide range of positive or negative switching voltages.ApplicationsSwitching power suppliesIsolated IGBT/MOSFET gate drivesIndustrial invertersGallium nitride (GaN)/silicon carbide (SiC) compatible1Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,239. Other patents pending.

TheADuM5410/ADuM5411/ADuM5412are quad-channel digital isolators withisoPower®, integrated, isolated dc-to-dc converters. Based on the Analog Devices, Inc.,iCoupler®technology, the dc-to-dc converters provide regulated, isolated power that is adjustable between 3.15 V and 5.25 V.The ADuM5410/ADuM5411/ADuM5412 eliminate the need for a separate, isolated dc-to-dc converter in low power, isolated designs. TheiCoupler chip scale transformer technology is used for isolated logic signals and for the magnetic components of the dc-to-dc converters. The result is a small form factor, total isolation solution.The ADuM5410/ADuM5411/ADuM5412 isolators provide four independent isolation channels in a variety of channel configurations and data rates (see the Ordering Guide for more information).ApplicationsRS-232 transceiversPower supply startup bias and gate drivesIsolated sensor interfacesIndustrial PLCs

TheADuM5410/ADuM5411/ADuM5412 are quad-channel digital isolators withisoPower®, integrated, isolated dc-to-dc converters. Based on the Analog Devices, Inc.,iCoupler®technology, the dc-to-dc converters provide regulated, isolated power that is adjustable between 3.15 V and 5.25 V.The ADuM5410/ADuM5411/ADuM5412 eliminate the need for a separate, isolated dc-to-dc converter in low power, isolated designs. TheiCoupler chip scale transformer technology is used for isolated logic signals and for the magnetic components of the dc-to-dc converters. The result is a small form factor, total isolation solution.The ADuM5410/ADuM5411/ADuM5412 isolators provide four independent isolation channels in a variety of channel configurations and data rates (see the Ordering Guide for more information).ApplicationsRS-232 transceiversPower supply startup bias and gate drivesIsolated sensor interfacesIndustrial PLCs