MAX16932BATIU/V+

Voltage - Supply (Vcc/Vdd):	3.5 V ~ 42 V
Supplier Device Package:	28-TQFN (5x5)
Package / Case:	28-WFQFN Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Enable, Frequency Control, Power Good
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	98.5%
Frequency - Switching:	1MHz ~ 2.2MHz, 500kHz ~ 1.1MHz
Series:	Automotive, AEC-Q100
Output Phases:	2
Number of Outputs:	2
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tube

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Introduction

The MAX16932BATIU/V + is a low-voltage, low-power, full-featured DC-DC Switching Controller designed for step-down and step-up applications. It features an integrated Buck controller and high-performance PWM control with a current mode scheme to provide high-precision, dynamic, and fast regulation. The integrated Buck controller with an input current limit of 5A, offers a wide range of output current rating and all modes can be operated over wide Vin-Vout, and with fast overcurrent detection.

Application Field

The MAX16932BATIU/V + is suitable for a variety of trending applications, such as consumer and applications related energy efficiency, cellular computing, smart watches, and portable devices. The MAX16932BATIU/V + offers low Iq operation and very low startup current to support power sequencing in application systems. The high efficiency mode of operation and dynamic voltage regulation ensure superior performance. The device’s high-precision current limit improves thermal margin, thus avoiding system over-temperature shutdown.

Working Principle

The MAX16932BATIU/V + operates as a synchronous buck converter. It provides an integrated gate driver that requires no external bias supply. The device offers an adjustable current limit, over-current protection, and programmable soft start. The MAX16932BATIU/V + is designed to start up with a low current levels of only 3 mA.The MAX16932BATIU/V + uses a two-wire Current Mode with Peak Current Mode control scheme. Switch current lamps are sensed by the SenseFET, which regulates the switch current. When the sensed current reaches the current limit threshold, the PWM cell signals the switch to turn off, thus limiting switch current. This limits the peak current and, thus, output current.The MAX16932BATIU/V + employs an advanced digital implementation of the duty cycle control, which improves the system’s response time and, thus, minimizes the effects of drops in input voltage. The input voltage is monitored and the duty cycle is adjusted to maintain an output voltage.

Conclusion

The MAX16932BATIU/V + is an easy to program and easy to implement digital switching controller for DC-DC applications. It offers a wide operating range, improved power efficiency, and thermal performance. The device provides a complete DC/DC solution and requires fewer external components, reducing system cost. When combined with a suited MOSFET, the MAX16932BATIU/V + ensures optimal performance and board-level performance with a minimally external components count.

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