SG Micro introduces the SGM61061, a 6A high-efficiency synchronous buck converter. This device is suitable for battery-powered applications, point-of-load, processor power, optical modules, and HDD/SSD. The SGM61061 is a 2.8V to 5.5V synchronous buck converter using a constant on-time architecture, providing an efficient and compact optimized solution.
The device integrates switches capable of delivering up to 6A output current.
When the MODE input is below 0.4V or floating,
the SGM61061 enters pulse frequency modulation (PFM) mode. Under medium to heavy loads,
the device operates in pulse width modulation (PWM)
mode with a switching frequency of 1.4MHz (TYP).
During light loads, the device automatically enters power-saving mode (PSM), maintaining high efficiency across the entire load current range.
When the MODE input voltage is greater than 1.2V,
the SGM61061 operates in PWM mode over the entire load current range.
In shutdown mode, the current consumption drops to 1.5μA (maximum).
The SGM61061 can dynamically adjust the output voltage through
the MODE/VCON pin to meet situations requiring direct output voltage changes.
When the MODE/VCON pin receives an appropriate voltage value (0.6V to 1.1V),
the SGM61061 will operate in PWM mode with the internal reference voltage smoothly changing,
achieving a new output voltage without altering the external resistor divider.
The SGM61061 is packaged in an environmentally friendly TQFN-2×3-12L green package.
Figure 1 shows the application circuit of the SGM61061.