MIC4606
85V Full-Bridge MOSFET Drivers with
Adaptive Dead Time and Shoot-Through
Protection
Features
General Description
5.5V to 16V gate drive supply voltage range
The MIC4606 is an 85V full-bridge MOSFET driver that
Advanced adaptive dead time
features adaptive dead time and shoot-through protection.
The adaptive dead time circuitry actively monitors both Intelligent shoot-through protection
sides of the full-bridge to minimize the time between high-
MIC4606-1: 4 Independent TTL inputs
side and low-side MOSFET transitions, thus maximizing
MIC4606-2: 2 PWM inputs
power efficiency. Antishoot-through circuitry prevents
Enable input for on/off control
erroneous inputs and noise from turning both MOSFETs of
On-chip bootstrap diodes
each side of the bridge on at the same time.
Fast 35ns propagation times
The MIC4606 also offers a wide 5.5V to 16V operating
Drives 1000pF load with 20ns rise and fall times
supply range to maximize system efficiency. The low 5.5V
operating voltage allows longer run times in battery-
Low power consumption: 235A total quiescent current
powered applications. Additionally, the MIC4606s
Separate high- and low-side undervoltage protection
adjustable gate drive sets the gate drive voltage to V for
DD
40C to +125C junction temperature range
optimal MOSFET R , which minimizes power loss due
DS(ON)
to the MOSFETs R .
DS(ON)
Applications
The MC4606-1 features four independent inputs while the
Full-bridge motor drives
MIC4606-2 utilizes two PWM inputs, one for each side of
Power inverters
the H-bridge. The MIC4606-1 and MIC4606-2 are
High Voltage step-down regulators
available in a 16 pin 4 4 QFN package with an operating
temperature range of -40C to 125C.
Distributed power systems
Stepper motors
Datasheets and support documentation are available on
Micrels web site at: www.micrel.com.
Typical Application
85V Motor Drive Configuration
Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC4606
Ordering Information
(1)
Part Number Input Version Junction Temperature Range Package
MIC4606-1YML TTL Dual Inputs 40 to +125C 16-Pin 44 QFN
MIC4606-2YML TTL Single PWM Inputs 40 to +125C 16-Pin 44 QFN
Note:
1. QFN is a GREEN, RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
Pin Configuration
MIC4606-1 MIC4606-2
16-Pin 4mm x 4mm QFN (ML)
(Top View)
Revision 1.0
September 8, 2014 2