SGM6620

The SGM6620 family is a 20A valley switch current limit synchronous Boost converter designed for high power applications. The device integrates a 9.8mΩ (TYP) high-side MOSFET to maximize the efficiency and reduce overall solution size for portable applications. To further maximize the power density, the SGM6620 family supports daisy chain operation. 

The device supports a wide input voltage range from 2.05V to 23V, which is suitable for various input source such as single-cell or multi-cell Lithium batteries, or USB PD3.0 input voltage range up to 20V. The SGM6620 family supports a wide programmable output voltage range from 4.5V to 25V. 

The SGM6620 family uses adaptive constant on-time valley current control topology to regulate the output voltage. The device offers operation mode selection via the MODE pin. Configuring to auto PFM mode, the device consumes minimal current at light load, and automatically switches to pulse width modulation (PWM) mode in moderate to heavy load condition. Configuring to forced PWM (FPWM) mode, the device operates in PWM mode across the entire load range to maintain consistent output voltage ripple for noise sensitive applications. The switching frequency in the PWM mode is 290kHz (TYP) for SGM6620 family. The SGM6620A offers light load ultrasonic mode to clamp the PFM frequency above 30kHz (TYP). The SGM6620 family offers the flexibility to select the main low-side power FET. The device integrates an internal gate driver with 500mA sourcing current and 1A sinking current capability. 

The device also integrates various protection features, such as output over-voltage protection (OVP), cycle-by-cycle over-current protection (OCP), and thermal shutdown. 

The SGM6620 family is available in a Green TQFN- 2.5×3-14AL package.