Analog Devices / Maxim Integrated MAX20812 Step-Down Switching Regulator

Analog Devices Inc. MAX20812 Step-Down Switching Regulator has an input voltage range of 2.7V to 16V and a 500kHz to 3MHz configurable switching frequency. ADI MAX20812 delivers up to 6A of load current per output. The two outputs can be connected in parallel as a single-output, dual-phase regulator that supports up to 12A load current.

ADI MAX20812 Step-Down Switching Regulator utilizes fixed-frequency, current-mode control with internal compensation. The dual-switching regulators operate at 180° out-of-phase. The MAX20812 features a selectable advanced modulation scheme (AMS) to provide improved dynamic load transient performance.

Additionally, the device also offers selectable discontinuous current mode (DCM) operation to improve light-load efficiency. Operation settings and configurable features are selected by connecting pin-strap resistors from the PGM_ pins to ground.

The MAX20812 integrates multiple protections, including positive and negative overcurrent, output overvoltage, and overtemperature protection. These features are integrated into a compact 3.5mm x 4.6mm FC2QFN package.

Features

High power density with low component count
- Dual-output or dual-phase operation
- Single-supply operation with integrated LDO for bias generation
- Optional 2.5V to 5.5V external bias for higher efficiency
- Compact 3.5mm x 4.6mm, 21-Pin, FC2QFN package
- Internal compensation
Wide operating range
- 2.7V to 16V Input voltage range
- 0.5V to 5.8V Output voltage range
- 500kHz to 3MHz Configurable switching frequency
- -40°C to +125°C Junction temperature range
- Three pin-strap programming pins to select different configurations
- Independent enable and power good for each output

Optimized performance and efficiency
- 92.5% Peak efficiency with V_DDH = 12V, V_OUT = 1.8V, and f_SW = 1MHz
- Interleaved 180° out-of-phase operation
- Selectable AMS to improve load transient
- Selectable DCM to improve light load efficiency
- Active current balancing for dual-phase operation

Applications

Communications equipment
Networking equipment
Servers and storage equipment
Point-of-load voltage regulators

µP Chipsets
Memory VDDQ
I/O Pins of an FPGA/DSP/MCU

Analog Devices / Maxim Integrated MAX20812 Step-Down Switching Regulator

Features

Applications

Simplified Application Circuits

Block Diagram

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