MLX83202 Datasheet, PDF (2/35 Pages) Melexis Microelectronic Systems – Automotive NFET pre-drivers

MLX83202/MLX83203
Automotive NFET pre-drivers
Table of Contents
1 Functional Diagram ____________________________________________________________________1
2 General Description ___________________________________________________________________1
3 Glossary of Terms _____________________________________________________________________3
4 Absolute Maximum Ratings _____________________________________________________________3
5 Pin Definitions and Descriptions _________________________________________________________4
6 Electrical Specifications ________________________________________________________________5
7 Block diagram and application circuit ___________________________________________________10
7.1 Pinout schematics ________________________________________________________________12
7.2 Ground connections_______________________________________________________________13
8 Description__________________________________________________________________________14
8.1 Supply system ___________________________________________________________________14
8.2 Sleep mode ______________________________________________________________________14
8.2.1 Sleep mode status overview ______________________________________________________15
8.3 Enable input _____________________________________________________________________16
8.4 Protection and diagnostic functions _________________________________________________16
8.4.1 Drain-source voltage monitoring ___________________________________________________16
8.4.2 Programmable dead time_________________________________________________________16
8.4.3 Supply overvoltage shutdown _____________________________________________________16
8.4.4 Regulated supply overvoltage shutdown _____________________________________________16
8.4.5 Undervoltage warnings __________________________________________________________17
8.4.6 Over temperature warning ________________________________________________________17
8.4.7 EEPROM error warning __________________________________________________________17
8.4.8 ICOM diagnostics interface _______________________________________________________17
8.4.9 Pre-driver output state summary ___________________________________________________19
8.5 EEPROM programming ____________________________________________________________20
8.5.1 Memory map __________________________________________________________________20
8.5.2 SPI communication _____________________________________________________________21
8.6 Current sense amplifier ____________________________________________________________25
8.7 FET driver implementation _________________________________________________________27
8.7.1 Normal operation _______________________________________________________________27
8.7.2 FET driver during sleep mode _____________________________________________________28
8.8 Charge pump_____________________________________________________________________28
8.9 100% PWM with bootstrap __________________________________________________________29
9 Standard information regarding manufacturability of Melexis products with different soldering
processes ____________________________________________________________________________30
10 ESD Precautions ____________________________________________________________________30
11 Package Information _________________________________________________________________31
11.1 Package data QFN32 (5x5, 32 leads) ________________________________________________31
11.2 Package data TQFP48_EP 7x7 (48 leads, exposed pad) _______________________________32
11.3 Package Marking ________________________________________________________________33
12 Disclaimer _________________________________________________________________________34
3901083203
Rev 2.2
Page 2 of 35
Prelim. Data Sheet
4 Dec 2013