Digital PWM Controllers


IDT’s smart digital PWM controller chipsets provide designers with a complete range of high efficiency digital power solutions to meet low, medium, and high power requirements. Configurability via hardware or software ensures optimum flexibility and reusability of the design. The solutions offer optional communications for telemetry and fault reporting, allowing easier implementation in smart managed systems to meet system reliability, energy efficiency, and regulatory requirements.

Download White Paper: Controller Scalability Methods for Digital Point of Load Converters (PDF)

Programmability at your Fingertips

IDT’s digital PWM controller solutions are supported by the easy-to-use PC-based Pink Power Designer™ design optimizer tool. A key advantage of this software and IDT’s digital power architecture is the ability to make real time trade-offs between performance, size, and cost. The software helps to maintain design investment as the resulting digital power solution can be easily migrated to meet different power requirements.

Digital PWM Controllers for Point-of-load Applications

IDT’s digital PWM controllers are designed for high-current, non-isolated DC/DC step-down point of load (POL) converter applications. The digital PWM controller ICs have been optimized for maximum efficiency when used with IDT’s DrMOS devices. Reference designs and application instructions enable a high performance, turnkey, digital POL converter (digital DC/DC) solution without extensive engineering development. Solutions are available in single-phase or dual-phase configurations.

Digital PWM Controllers for the Murata Power Solution

IDT’s ZSPM1025x and ZSPM1035x single-phase digital PWM controller ICs for non-isolated DC/DC supplies, combined with Murata Power Solution’s single-phase 25A and 35A surface-mount power blocks, provide a quick route to proven, high-performance digital regulator solutions.

IDT’s easy-to-use software enables solutions that have fully customizable output voltage and output capacitance. PMBus™ digital communications is optionally available for monitoring, configurable protection and sequencing.

About Digital Power and Digital Power Controllers

Digital power refers to the implementation of a digital control loop in a DC-DC regulated power supply application (also known as a digital dc-dc converter or digital regulator). Unlike an analog control loop, the digital pulse-width modulation (PWM) controller IC uses an analog-to-digital converter (ADC) to monitor the output of the voltage regulator. Then, the digital PWM controller IC, using specialized digital control algorithms, intelligently adjusts the gate drive voltages applied to the switches in the switching regulator circuit to produce a well-regulated power source. Digital power controller implementations provide advantages in their ease of programmability and ability to use highly-sophisticated control loop algorithms to optimize line and load regulation in various applications.

About Digital DC-DC Point-of-Load Converters

For the most accurate voltage regulator performance, it can be advantageous to place the DC-DC voltage regulator in close proximity to where the output will be connected; in other words, at the point-of-load. This helps to minimize AC and DC losses, along with unwanted noise due to long traces. The digital PWM controller (also known and digital power controller) need not be physically located next to the power switches themselves, providing advantages for layout in densely populated PCBs. A low-current connection is used to monitor the digital regulator's output at the point of load (POL) for the most accurate control.