MC33937
MC33937 is Three phase field effect transistor pre-driver manufactured by NXP Semiconductors.
description
The 33937A is a field effect transistor (FET) predriver designed for three phase motor control and similar applications. It meets the stringent requirements of automotive applications and is fully AEC-Q100 grade 1 qualified.
The IC contains three high-side FET predrivers and three low-side FET predrivers. Three external bootstrap capacitors provide gate charge to the high-side FETs.
The IC interfaces to a MCU via six direct input control signals, an SPI port for device setup and asynchronous reset, enable and interrupt signals. Both 5.0 and 3.0 V logic level inputs are accepted and 5.0 V logic level outputs are provided. The integrated circuit (IC) uses SMARTMOS technology.
2 Features and benefits
- Extended operating range from 6.0 V to 58 V covers 12 V and 42 V systems
- Gate drive capability of 1.0 A to 2.5 A
- Fully specified from 8.0 V to 40 V, covers 12 and 24 V automotive systems
- Device protection against reverse charge-injection from CGD and CGS of external FETs
- Dead time is programmable via the SPI port
- Simultaneous output capability enabled via safe SPI mand
- AEC-Q100 grade 1 qualified
3 Applications
Automotive systems:
- Cooling fan
- Water pump
- Actuator controls
- Fuel pump
- Electro-hydraulic and electric power steering
- Engine and transmission control
- Motor control
- Braking pump
- Belt starter generator
- Turbo pump
NXP Semiconductors
Three phase field effect transistor pre-driver
4 Ordering information
Table 1. Ordering information
Type number
Package
Name
Description
MC33937APEK HSOP54 Plastic, thermal enhanced small outline package; 54 terminals; 0.65 mm pitch; 7.5 mm x 17.9 mm x 2.33 mm body
Version SOT1747-4
5 Block diagram
VPUMP PGND
PUMP
MAIN CHARGE
PUMP
VPWR...
