Two-Stage Buck Regulators Drive Low-Output-Voltage Core Apps
The PE24111 expands pSemi’s portfolio of two-stage buck regulators aimed at applications that demand high efficiency in a low-profile form factor (<1.2 mm), offering high efficiency and low ripple. Made up of a two-phase interleaved charge pump along with an interleaved buck-regulator stage, the solution greatly reduces the dependency on inductance for high-efficiency solutions in small-footprint and height-constrained form factors.
Selected using external feedback resistors or an external DAC, the output voltage can be adjusted between 0.35 and 0.85 V for low-profile point-of-load regulators, high-density optical transceiver modules, core supplies, ASICs, and FGPAs. For higher power delivery, the PE24111 can be connected in parallel, at up to four devices, with synchronization capability.
The device's low height and compact footprint are due to a novel two-stage design combining a capacitor-divider charge-pump with dual-phase buck regulators.
