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The ZL9101M is a 12A, variable output, step-down PMBus-compliant digital power supply. Included in the module is a high-performance digital PWM controller, power MOSFETs, an inductor and all the passive components required for a highly integrated DC/DC power solution. This power module has built-in auto-compensation algorithms, which eliminates the need for manual compensation design work. The ZL9101M operates over a wide input voltage range and supports an output voltage range of 0.6V to 3.6V, which can be set by external resistors or via PMBus. This high-efficiency power module is capable of delivering 12A. Only bulk input and output capacitors are needed to finish the design. The output voltage can be precisely regulated to as low as 0.6V with ±1% output voltage regulation over line, load and temperature variations.

The ZL9101M features auto compensation, internal soft-start, auto-recovery overcurrent protection, an enable option and prebiased output start-up capabilities.

The ZL9101M is packaged in a thermally enhanced, compact (15mmx15mm) and low profile (3.5mm) overmolded QFN package module suitable for automated assembly by standard surface mount equipment. The ZL9101M is RoHS compliant.

Figure 1 represents a typical implementation of the ZL9101M. For PMBus operation, it is recommended to tie the Enable pin (EN) to SGND.

Key Features

• Complete digital switch mode power supply
• Fast transient response
• Auto compensating PID filter
• External synchronization
• Output voltage tracking
• Current sharing
• Programmable soft-start delay and ramp
• Overcurrent/undercurrent protection
• PMBus compliant

Applications

• Server, telecom, and datacom
• Industrial and medical equipment
• General purpose point-of-load