Datasheet ADuM4138 (Analog Devices)

High Voltage, Isolated IGBT Gate Driver with Isolated Flyback Controller Data Sheet ADuM4138 FEATURES
and low voltage domains of the chip. Information on the status of the chip can be read back from the dedicated outputs.
6 A (typical) peak drive output capability Internal turn off NFET, on resistance: <1 Ω
The ADuM4138 includes an isolated flyback controller,
Internal turn on PFET, on resistance: <1.2 Ω
allowing simple secondary voltage generation.
2 overcurrent protection methods
Overcurrent detection is integrated in the ADuM4138 to
Desaturation detection
protect the IGBT in case of desaturation and/or overcurrent
Split emitter overcurrent detection
events. The overcurrent detection is coupled with a high speed,
Miller clamp output with gate sense input
two-level turn off function in case of faults.
Isolated fault output Isolated temperature sensor readback
The ADuM4138 provides a Miller clamp control signal for a
Propagation delay
metal-oxide semiconductor field effect transistor (MOSFET) to
Rising: 95 ns typical
provide IGBT turn off, with a single rail supply when the Miller
Falling: 100 ns typical
clamp voltage threshold drops below 2 V (typical) above GND2.
Minimum pulse width: 74 ns
Operation with unipolar secondary supplies is possible with or
Operating junction temperature range: −40°C to +150°C
without the Miller clamp operation.
VDD1 and VDD2 UVLO
A low gate voltage detection circuit can trigger a fault if the gate
Minimum external tracking (creepage): 8.3 mm (pending)
voltage does not rise above the internal threshold within the
Safety and regulatory approvals
time allowed after turn on (12.8 μs typical). The low voltage
5000 V rms for 1 minute per UL 1577
detection circuit detects IGBT device failures that exhibit gate
CSA Component Acceptance Notice 5A
shorts or other causes of weak drive.
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
Two temperature sensor pins, TS1 and TS2, allow isolated
VIORM = 849 VPEAK (reinforced/basic)
monitoring of system temperatures at the IGBTs. The secondary
Qualified for automotive applications
undervoltage lockout (UVLO) is set to 11.2 V (typical) in
APPLICATIONS
accordance with common IGBT threshold levels.
MOSFET and IGBT gate drivers
A serial peripheral interface (SPI) bus on the primary side of
Photovoltaic (PV) inverters
the device provides in field programming of temperature
Motor drives
sensing diode gains and offsets to the ADuM4138. Values are
Power supplies
stored on an electrically erasable programmable read-only
GENERAL DESCRIPTION
memory (EEPROM) located on the secondary side of the device. In addition, programming is available for specific VDD2 voltages, The ADuM4138 is a single-channel gate driver optimized for temperature sensing reporting frequencies, and overcurrent driving insulated gate bipolar transistors (IGBTs). Analog blanking times. Devices, Inc., iCoupler® technology provides isolation between the input signal and the output gate drive. The ADuM4138 provides isolated fault reporting for overcurrent events, remote temperature overheating events, UVLO, thermal The Analog Devices chip scale transformers also provide isolated shutdown (TSD), and desaturation detection. communication of control information between the high voltage Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329. Other patents pending.
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ELECTRICAL CHARACTERISTICS SPI TIMING SPECIFICATIONS SPI Timing Diagram PACKAGE CHARACTERISTICS REGULATORY INFORMATION (PENDING) INSULATION AND SAFETY-RELATED SPECIFICATIONS DIN V VDE V 0884-10 (VDE V 0884-10):2016-12 INSULATION CHARACTERISTICS (PENDING) RECOMMENDED OPERATING CONDITIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION APPLICATIONS INFORMATION PCB LAYOUT ISOLATED FLYBACK CONTROLLER SPI AND EEPROM OPERATION SPI Programming USER REGISTER MAP USER REGISTER BITS OFFSET_2[5:0] Bits GAIN_2[5:0] Bits OFFSET_1[5:0] Bits GAIN_1[5:0] Bits CONFIGURATION REGISTER BITS OT_FAULT_OP Bit OT_FAULT_SEL Bit OC_TIME_OP Bit OC_2LEV_OP Bits LOW_T_OP Bit OC_BLANK_OP Bit tBLANK[3:0] Bits ECC_OFF_OP Bit FLYBACK_V[3:0] Bits T_RAMP_OP Bit PWM_OSC Bit CONTROL REGISTER BITS ECC2_DBL_ERR Bit ECC2_SNG_ERR Bit ECC1_DBL_ERR Bit ECC1_SNG_ERR Bit PROG_BUSY Bit SIM_TRIM Bit PROPAGATION DELAY RELATED PARAMETERS PROTECTION FEATURES Primary Side UVLO Fault Reporting Overcurrent Detection High Speed, Two-Level, Turn Off Miller Clamp Desaturation Detection Thermal Shutdown Isolated Temperature Sensor POWER DISSIPATION INSULATION LIFETIME DC CORRECTNESS AND MAGNETIC FIELD IMMUNITY TYPICAL APPLICATION CIRCUIT OUTLINE DIMENSIONS ORDERING GUIDE AUTOMOTIVE PRODUCTS