Power Electronics / Power Management


DC-DC converter with integrated H-bridge

10 October 2018 Power Electronics / Power Management

Diodes Incorporated’s new AP72200 is a high-current synchronous buck/boost DC-DC converter with integrated high-side and low-side H-bridge MOSFETs. It delivers up to 97% efficiency with 1% voltage regulation accuracy, low quiescent current and very low output ripple.

The AP72200 employs proprietary buck/boost current-mode control technology to achieve excellent voltage regulation and a continuous output current of up to 2 A. The design allows for seamless transition between buck and boost operation while the wide 2,3 V to 5,5 V input voltage range provides flexibility of supply and produces between 2,6 V and 5,14 V output voltage.

The high level of integration, along with low quiescent current and wide input voltage range, make the device well suited for a wide range of portable applications including smartphones, tablets and other battery-operated consumer devices.

Many of the features of the AP72200 are user-configurable through an industry standard I²C interface, which can operate in standard mode, fast mode, fast-mode plus and high-speed mode. This includes programmable output voltage ramp-up and ramp-down slew rates, output active discharge, over-voltage protection threshold and over-current threshold.

The AP72200 can also be configured to operate in PWM or PFM mode, as well as in ultrasonic mode, which reduces the switching frequency to avoid the generation of sub-harmonic frequencies in the region of 20 kHz that can cause interference in the audible frequency range. The buck/boost output can also be disabled using the I²C interface, allowing a master device to control the operation of the regulator across a standard I²C bus. The output voltage can be set to between 2,60 V and 5,14 V in 0,02 V increments by programming the device over I²C.

The integrated H-bridge MOSFETs feature extremely low RDS(ON) of 25 mΩ and a shutdown current of less than 1 μA. Quiescent current is as low as 20 μA when operating in non-switching mode and a typical of 29 μA in PFM mode. The switching frequency in continuous switching mode is typically 2,5 MHz, dropping to 27 kHz in ultrasonic mode.

For more information contact Dirk Venter, Altron Arrow, +27 11 923 9600, [email protected], www.arrow.altech.co.za



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Bringing Bluetooth Channel Sounding to automotive and beyond with KW47
Altron Arrow Telecoms, Datacoms, Wireless, IoT
NXP’s new Channel Sounding-certified KW47 and MCX W72 wireless MCUs are set to help automakers with distance measurement, bringing an additional ranging solution for car access and autonomous systems, and will be utilised across a broader spectrum of applications.

Read more...
Wi-Fi 6 and Bluetooth LE coprocessor module
Altron Arrow Telecoms, Datacoms, Wireless, IoT
The ST67W611M1 from STMicroelectronics boasts an all-in-one design which, together with its capabilities, contribute to making it an attractive choice for IoT edge devices requiring a single-chip solution.

Read more...
Wi-Fi 6 plus Bluetooth LE SoC
Altron Arrow Telecoms, Datacoms, Wireless, IoT
Silicon Labs’ SiWx917M SoC is the company’s lowest power Wi-Fi 6 SoC, ideal for ultra-low power IoT wireless devices using Wi-Fi, Bluetooth, Matter, and IP networking for secure cloud connectivity.

Read more...
3-terminal filters for automotive applications
RS South Africa Power Electronics / Power Management
TDK has expanded its YFF series of 3-terminal filters for automotive applications to include higher voltages up to 35 V and higher capacitances up to 4,7 µF.

Read more...
Simple battery charger ICs for any chemistry
Altron Arrow Editor's Choice Power Electronics / Power Management
The LTC4162 is a highly integrated, high voltage multi-chemistry synchronous monolithic step-down battery charger and PowerPath manager with onboard telemetry functions and optional maximum power point tracking.

Read more...
Why your PoE budget could make or break your next installation
Power Electronics / Power Management
In South Africa’s often unpredictable networking environments, understanding and planning your PoE budget is essential for system reliability, customer satisfaction, and long-term scalability.

Read more...
Five-minute EV charging a reality
Power Electronics / Power Management
Successfully demonstrated in Beijing recently at the Shanghai auto show, BYD claimed to add 400 km of range in just five minutes of charging.

Read more...
The evolution of power management in electronics
TRX Electronics Power Electronics / Power Management
The Mibbo MPS Series metal-encased power supplies deliver solid, efficient power in a durable package that’s built to last.

Read more...
Power and precision in a compact package
Conical Technologies Power Electronics / Power Management
The Mibbo MPS Series metal-encased power supplies deliver solid, efficient power in a durable package that’s built to last.

Read more...
Robust PoE module
CST Electronics Power Electronics / Power Management
The Ag59800-LPB high power, IEEE 802.3bt compliant, PD module from Silvertel offers typical efficiency of 95% making it an ideal choice for higher power, space-constrained applications.

Read more...