Murata Manufacturing Co., Ltd. has developed the "FlexiBK series (PE24110)" high-efficiency DC-DC converter IC for low rise applications below 1.2mm, which can output up to 12A with an input voltage of 3.3. This product is available in a 4.0 × 3.2mm QFN (Quad Flat No led package) package, suitable for thin applications below 1.2mm.
In recent years, in the communication infrastructure market, the consumption current of ASIC/DSP has continued to increase, while the core voltage has shown a downward trend. The duty cycle (1) of traditional DC-DC converters becomes narrower, resulting in a significant decrease in conversion efficiency. Therefore, it is required to achieve efficient conversion of DC-DC converters without relying on input/output potential differences.
Therefore, in applications that require high-density installation of thin POL (2) voltage regulators, optical transmission modules, core power supplies, ASIC/FGPA, and other applications that limit installation area and height, Murata has developed this product that significantly reduces dependence on inductor size and achieves high efficiency. In addition to integrating independently developed charge pump technology (3) with the innovative two-stage architecture of traditional DC-DC converter circuits, 89% high efficiency has been achieved through the formation of a 2-phase staggered circuit (4). The input voltage range is 3.0V to 3.45V, providing an output current of 12A for each device. The output voltage can be adjusted between 0.35 V and 0.7 V based on external feedback resistance.
main features ：
Output current upper limit 12A
Peak conversion efficiency of 89% (when using 3.3V input, 0.5V output, and 1.2mm height inductor)
By adopting an interleaved approach, extremely low input-output ripple and noise characteristics have been achieved
Adaptive Voltage Regulation (AVS) function via external DAC
Up to 4 devices can run in parallel
Built in FET switch
In order to solve the power related problems faced by customers, we have developed a thin and high-efficiency step-down DC-DC converter. PE24110 has excellent performance in peak efficiency, output current, and output voltage, providing an ideal power solution for low output voltage applications
notes:
Duty cycle: The proportion of power on time relative to the total cycle time. When it is a DC-DC converter, it is determined by the ratio of input voltage to output voltage.
POL: The abbreviation for Point of Load. DC-DC converters configured as dedicated power circuits near electronic devices such as FPGA and ASIC.
Charge pump technology: a voltage conversion circuit composed of capacitors and semiconductor switches.
Interleaving method: A circuit method that allows the same circuit network configured in parallel to work sequentially without duplication.
