In the automotive power supply design, when the power supply solution of low pressure, larger current is done directly from the car battery (typically 24V to 36V), thereby causing a large conversion loss and space waste. At this time, a low pressure (maximum 6V input voltage), a larger current output, dual channel (2A / 2A or 3A / 1A) buck transformer can solve your worries. To this end, MPS's MPQ2166 products came into being.
MPQ2166 has the low pressure, larger current, dual channel, and light load alternative continuous, intermittent two modes, etc., so that it is very suitable for applications where the point load power supply is applied; 60μA low static current is also very applicable. Applicable applications for long-term standby applications such as automotive dashboards, car E-CALL; up to 3MHz, which makes it use when used in car entertainment facilities; in addition to this, it also owns High frequency efficient and superior thermal performance, there are two different packages: QFN-18 (2 mmx3mm) and QFN-18 (2.5mmmmmmm), of course, in order to improve welding reliability, you can also choose the industry's new trend. WETTABLE FLANK version.
Figure 1: MPQ2166 typical application circuit
Figure 1 is its typical application circuit, easy to use it is its characteristic. For a dual-channel antihyperture, its application circuit looks very simple.
1 60μA low static current
The quantitative current of MPQ2166 is only 60μA, and the current is turned off at a hundred NA level. This makes MPQ2166 have a unique advantage in applications that require long-term standby applications, such as automotive meter display (seat display, light display, engine oil display, engine temperature display, etc.).
In addition, such a low static current also greatly increases the efficiency of the chip in a light load state.
2 high frequency efficient
The maximum operating frequency can reach 3MHz, and the medium wave band is successfully avoided, and the interference of the audio is reduced. The most difficult thing is to be in such a high operating frequency, its peak efficiency is still higher than 90%.
Figure 2: MPQ2166 efficiency curve
VIN = 3.6V, Vout = 1.8V, IOUT = 0.5A, even at 2.25 MHz such high frequency operation, the highest efficiency has reached 93%. Such a high efficiency, even the old driver is sighing!
3 superior thermal performance
High efficiency is naturally accompanied by superior thermal performance (VIN = 5V, Vout1 = 1.8V, Vout2 = 1.2V, L1 = L2 = 1.5μH, FSW = 2.25MHz, Ta = 25 ° C), temperature rise 18 ⁰C. Hey, I am a bit cold! This makes MPQ2166 to adapt to many ambient temperature.
Figure 3: MPQ2166 temperature rise curve
4 low pressure, larger output current, dual channel
The maximum 6V input voltage, 2A / 2A or 3A / 1A larger output current makes the MPQ 2166 ideal for point load power applications in the in-vehicle power supply. This greatly reduces the transfer loss. The feature of the dual channel greatly improves the efficiency and spatial utilization of the design.
5 max 100% duty cycle
The MPQ2166 can realize a real 100% duty cycle, and it has a lower upper and lower tubes (55mΩ and 20mΩ, respectively, make it better Low Drop-OUT performance. "
MPS Other Car Low Pressure Buckle Solutions
The low-voltage car solution in the above table is a single channel buffer. If the MPQ2166 does not fully meet your design needs, then other low-voltage antihypertensive solutions can be found in the above table, which believes that 0.6a to 4a is such a wide output. The current range, there is always one to make you favor.
Typical application, reading
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