ADUM4138 Series

High Voltage, Isolated IGBT Gate Driver with Isolated Flyback Controller

Catalog

High Voltage, Isolated IGBT Gate Driver with Isolated Flyback Controller

Part	Supplied Contents	Contents	Type	Utilized IC / Part	Primary Attributes	Function	Package / Case [custom]	Package / Case [custom]	Package / Case	Supplier Device Package	Grade	Current - Peak Output	Number of Channels	Approval Agency	Mounting Type	Propagation Delay tpLH / tpHL (Max) [Max] [custom]	Propagation Delay tpLH / tpHL (Max) [Max] [custom]	Common Mode Transient Immunity (Min) [Min]	Rise / Fall Time (Typ) [custom]	Rise / Fall Time (Typ) [custom]	Technology	Voltage - Output Supply [Max]	Voltage - Output Supply [Min]
Analog Devices EVAL-ADUM4138EBZ	Board(s)	Board(s)	Power Management	ADuM4138	1-Channel (Single)	Gate Driver
Analog Devices ADUM4138WBRNZ							7.5 mm	0.295 in	28-BSSOP	28-SOIC-W-FP	Automotive	6 A	1	CSA UL VDE	Surface Mount	121 ns	130 ns	150 kV/µs	100 ns	95 ns	Magnetic Coupling	25 V	12 V

Catalog

High Voltage, Isolated IGBT Gate Driver with Isolated Flyback Controller

Key Features

• 6 A (typical) peak drive output capability

• Internal turn off NFET, on resistance: <1 Ω

• Internal turn on PFET, on resistance: <1.2 Ω

• 2 overcurrent protection methodsDesaturation detectionSplit emitter overcurrent detection

• Desaturation detection

• Split emitter overcurrent detection

• Miller clamp output with gate sense input

• Isolated fault output

• Isolated temperature sensor readback

• Propagation delayRising: 95 ns typicalFalling: 100 ns typical

• Rising: 95 ns typical

• Falling: 100 ns typical

• Minimum pulse width: 74 ns

• Operating junction temperature range: −40°C to +150°C

• VDD1and VDD2UVLO

• Minimum external tracking (creepage): 8.3 mm (pending)

• Safety and regulatory approvals5000 V rms for 1 minute per UL 1577CSA Component Acceptance Notice 5ADIN V VDE V 0884-10 (VDE V 0884-10):2006-12 VIORM= 849 VPEAK(reinforced/basic)

• 5000 V rms for 1 minute per UL 1577

• CSA Component Acceptance Notice 5A

• DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 VIORM= 849 VPEAK(reinforced/basic)

• Qualified for automotive applications

Description

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