High Voltage, Isolated IGBT Gate Driver
with Fault Detection
Data Sheet
ADuM4137
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.
FEATURES
6 A peak drive output capability
Internal turn off NFET, on resistance: <0.95 Ω
Internal turn on PFET, on resistance: <1.18 Ω
Split emitter overcurrent detection
Miller clamp output with gate sense input
Isolated fault output
Isolated temperature sensor read back
Propagation delay
Rising: 105 ns typical
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.
Falling: 107 ns typical
Minimum pulse width: 70 ns
A low gate voltage detection circuit can trigger a fault if the gate
voltage does not go above the internal threshold (VDVL) 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.
Operating junction temperature range (−40°C to +150°C)
DD1 and VDD2 UVLO
V
ASC input
8.3 mm creepage distance
The secondary falling UVLO is set to 11.24 V (typical) for
common IGBT two-level plateau voltage levels.
Safety and regulatory approvals
5 kV rms for 1 minute per UL 1577
CSA Component Acceptance Notice 5A
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
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.
V
IORM = 849 VPEAK (reinforced/basic)
AEC-Q100 qualified for automotive applications
APPLICATIONS
MOSFET/IGBT gate drivers
Photovoltaic (PV) inverters
Motor drives
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.
Power supplies
GENERAL DESCRIPTION
The ADuM41371 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.
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).
1 Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329. Other patents pending.
Rev. 0
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