MLX83202 Datasheet, PDF (1/35 Pages) Melexis Microelectronic Systems – Automotive NFET pre-drivers

MLX83202/MLX83203
Automotive NFET pre-drivers
Features and Benefits
 Level shifting between micro-controller PWM outputs
and 3 external N-FET half-bridges
 100% PWM operation
 Low offset, low drift, fast current sense amplifier
 Operating range VSUP = [4.5, 28] V, 45V Abs. Max
 Fault interrupt & feedback to microcontroller
 Under & overvoltage protection
 Overtemperature protection
 VDS and VGS external FET monitoring
 Sleep mode with low quiescent current
 Compatible with 3V and 5V micro-controllers
 Charge-pump provides NFET reverse polarity drive
Application Examples
 Fail-safe applications
 Low-torque control applications
 BLDC sine wave applications (PMSM)
Ordering Information
Part No.
MLX83202
MLX83202
MLX83203
MLX83203
Temperature Code
K (-40°C to 125°C)
K
K
K
Package Code
LQ (QFN32, 5x5mm)
PF (TQFP48, 7x7mm)
LQ (QFN32, 5x5mm)
PF (TQFP48, 7x7mm)
Option code
AAA 000
AAA 000
AAA 000
AAA 000
Comment
25 Ohm 3HB (*)
25 Ohm 3HB (*)
8 Ohm 3HB
8 Ohm 3HB (*)
(*): Derivatives of MLX83203KLQAAA-000 available on high volume request
1 Functional Diagram
2 General Description
The MLX83202/MLX83203 family of pre-drivers is
designed to drive high-current N-type FET 3-phase
motor control applications.
The built-in EEPROM allows extensive configurability
of the pre-driver without the need for external
resistors and SPI interface programming. This
reduces the package pin count to only 32.
All output voltages are monitored for failure
conditions. The microcontroller is informed of the
failure condition via a fast serial interface.
The device comprises a current shunt amplifier, with
a high gain bandwidth (GBW), offering a fast settling
time with low noise. This makes the pre-drivers ideal
for precise torque control applications like e.g.
electrical power steering and brake by wire.
A combination of bootstrap and charge pump enables
driving 6 NFETs, with gate charges up to
400nC/NFET with a minimum of device self-heating.
The IC reset level below 4.5V allows for low-voltage
operation.
3901083203
Rev 2.2
Page 1 of 35
Prelim. Data Sheet
4 Dec 2013