Single-/Dual-Supply, High Voltage Isolated
IGBT Gate Driver with Miller Clamp
Data Sheet
ADuM4135
FEATURES
GENERAL DESCRIPTION
4 A peak drive output capability
Output power device resistance: <1 Ω
Desaturation protection
Isolated desaturation fault reporting
Soft shutdown on fault
The ADuM4135 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 ADuM4135 includes a Miller clamp to provide robust
IGBT turn-off with a single-rail supply when the gate voltage
drops below 2 V (typical). Operation with unipolar or bipolar
secondary supplies is possible, with or without the Miller clamp
operation.
Miller clamp output with gate sense input
Isolated fault and ready functions
Low propagation delay: 55 ns typical
Minimum pulse width: 50 ns
Operating temperature range: −40°C to +125°C
Output voltage range to 30 V
Input voltage range from 2.5 V to 6 V
Output and input undervoltage lockout (UVLO)
Creepage distance: 7.8 mm minimum
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 is performed on the primary side of the device.
100 kV/µs common-mode transient immunity (CMTI)
20 year lifetime for 600 V rms or 1092 V dc working voltage
Safety and regulatory approvals
Integrated onto the ADuM4135 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 370 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.
5 kV ac for 1 minute per UL 1577
CSA Component Acceptance Notice 5A
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
V
IORM = 849 V peak (reinforced/basic)
APPLICATIONS
MOSFET/IGBT gate drivers
PV inverters
Motor drives
Power supplies
The secondary UVLO is set to 11.67 V (typical) with common
IGBT threshold levels taken into consideration.
FUNCTIONAL BLOCK DIAGRAM
16
V
1
SS2
V
SS1
V +
2V
TSD
1
ADuM4135
2
2
3
4
I
2
CLAMP
LOGIC
15 GATE_SENSE
V –
I
UVLO
READY
FAULT
14
13
V
V
OUT_ON
DD2
MASTER
LOGIC
PRIMARY
MASTER
LOGIC
SECONDARY
2
ENCODE
DECODE
DECODE
ENCODE
1
1
5
12
11
V
OUT_OFF
GND
9V
2
6
7
8
RESET
2
V
DD1
1
10
9
DESAT
V
SS1
V
SS2
1
UVLO
2
NOTES
1. GROUNDS ON PRIMARY AND SECONDARY SIDE ARE
ISOLATED FROM EACH OTHER.
Figure 1.
Rev. D
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