GENERAL DEscriptION
The SGM62180 is a two-phase, synchronous Buck DC/DC converter with integrated power MOSFETs using two identical current balanced phases with peak current mode control. The SGM62180 is a perfect low profile solution for height restricted applications.
The Buck converter operates with phase delay to minimize the required input capacitance and reduce the EMI generation.
With a wide 4.5V to 16V input voltage range and a very low current (30μA), the SGM62180 is well suitable for systems powered by multi-cell Li-Ion batteries, particularly for 12V applications. It can deliver 6A continuous current which is equally shared between the phases. Dividing current between two phases allows the use of thinner inductors required for low profile designs.
The efficiency is automatically maximized in the full duty cycle range by adjusting the switching frequency to the optimal value depending on VIN and VOUT. The loss is also minimized at very light loads by the automatic activation of the power-save mode (PSM).
Other features include tracking, adjustable soft-start time, and power-good output signal. The SGM62180 can operate with duty cycle for very low dropout. It is also capable to work at high step-down ratios without duty cycle limitation.
This device is available in a tiny 24-bump Green WLCSP package with 0.5mm pin pitch.
FEATURES
Two-Phase with Phase Shift Operation
Peak Current Controlled Constant Off-Time Mode
Balanced Current Sharing
Wide 4.5V to 16V Operating Input Voltage Range
0.9V to 6V Adjustable Output Voltage Range
6A Maximum Continuous Output Current
30μA (TYP) Low Current
Power-Save Mode (PSM) Operation in Light Loads
Adjustable Soft-Start
Voltage Tracking Capability
Monotonic Start with Pre-biased Output
Power-Good Output
Hiccup Mode Over-Current Protection
Over-Temperature Protection with Auto Recovery
Available in a Green WLCSP-3.1×2.1-24B Package
APPLICATIONS
Low Profile POL Supply
Narrow Voltage DC (NVDC) Powered Systems
Battery Powered Systems with Dual/Triple Li-Ion Cells
Ultra-Portable and Embedded Tablet PC
Computing Network Solutions
Micro Servers, SSD