MC33889DDW

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Applications:	Automotive
Interface:	CAN
Voltage - Supply:	5.5 V ~ 18 V
Package / Case:	28-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	28-SOIC
Mounting Type:	Surface Mount
Base Part Number:	MC33889

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

MC33889DDW Application Field and Working Principle

MC33889DDW is an interface device from NXP (formerly known as Freescale) for three lower power and low voltage systems. It is a highly integrated dual-channel very low power (VLPP) synchronous bridge driver. It was designed to provide low voltage (1.8V-3.3V) operation together with the lowest possible power dissipation and tolerates voltages ranging from 5V to 33Vdc. The device is designed to provide full-featured, low duty cycle performance, while enabling simple and versatile control of bridge circuits.

Applications

The MC33889DDW is suited for a variety of applications including pulse width modulation (PWM) motor control, linear motor control, brushless DC (BLDC) motor control, DC-to-DC switching regulators, LED lighting, and portable power sources. With its versatile control functions and compact physical size, the MC33889DDW is an ideal solution for low-voltage applications requiring high power density.

Features

The MC33889DDW includes several powerful features for control applications. The dual channel bridge driver includes 16-bit user programmable input tuning, PWM frequency control and adjustable slew rate. The device also includes an adjustable dead time control, an adjustable frequency modulated pulse width modulation (FMPWM) to reduce audible noise, thermal shut down protection and a low jitter synchronization mode. Also included is a fault detection system and status registers to allow monitoring of channel status, over voltage, over current, bridge heating and external port activities.

Working Principle

The MC33889DDW uses a PWM algorithm to generate the bridge signals. The PWM algorithm provides a variable duty cycle for each bridge. This variable duty cycle is determined by either the input control pins, the user-programmable inputs or the frequency modulation (FM) PWM control. The PWM algorithm can use either continuous or synchronized PWM output signals. With the FM PWM, the duty cycle or period of the pulses is modulated to reduce the audible noise. The MC33889DDW’s dual-channel bridge driver has a voltage-controlled bridge that can be used to generate bridge drive signals. By setting the adjustment registers, the user can adjust the wide-body swing and gate current. In addition, the bridge drive width can be set to one of four options; Power Mode (slow and quiet), Turbo Mode (fast and loud), Linear Mode (sine output wave) or Normal Mode (normal mode). The MC33889DDW provides full protection for the bridges by employing an onboard thermal shut-down feature. This feature will automatically shut-down the bridge when it reaches a given temperature limit, protecting the bridge from overheating.

Conclusion

The MC33889DDW is a powerful device for motor control applications because of its advanced features, small size and low power operation. It is highly configurable, allowing users control over various output bridge signals and bridge protection functions. Its ability to operate at low voltage and low power, as well as its ability to respond to a user’s application needs, makes the MC33889DDW a great choice for applications requiring a bridge driver.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description