ZHCSNO6B February 2023 – March 2024 TPS628301 , TPS628302 , TPS628303 , TPS628304
PRODUCTION DATA
The TPS62830x is a family of low-voltage step-down converters available in 1-, 2-, 3- and 4-A versions. These devices use a DCS-Control scheme which transitions seamlessly from pulse-width modulation (PWM) at medium and high output currents to pulsed-frequency modulation (PFM) at low output currents. During PWM operation, the devices switch at 2 MHz; during PFM operation, the switching frequency varies with the load current and reduces as the load current decreases. For applications that require the lowest possible output voltage ripple or a constant switching frequency, a high logic level on the MODE pin forces the devices to use PWM under all load conditions (at the expense of lower efficiency at low output currents). An external resistor-divider sets the output voltage anywhere from 0.5 V to 4.5 V and the nominal switching frequency is 2 MHz with a controlled variation over the input voltage range.
Device variants are available that support both hiccup and latch-off protection behavior.
The TPS62830x devices offer two significant advantages compared to previous devices in this series: Transient performance has improved significantly by usage of a fast comparator in both PFM and PWM modes, and EMI is reduced by an on-chip decoupling capacitor and an optimized gate driver.