LM5027MH/NOPB

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LM5027MH/NOPB, from Texas Instruments, is a fully - featured high - frequency synchronous buck regulator controller for driving a wide range of high - frequency, high - efficiency power conversion applications. It can be used in a variety of situations including low – voltage, high-current power supplies, battery powered devices, server power supplies and automotive power supplies. Extensive protection features make it an ideal choice for applications requiring both protection and control of the power conversion stage. The device supports adjustable output voltages, power tracking, and programmable overload protection.

The LM5027MH/NOPB consists of two stages, a voltage control loop and a pulse width modulation (PWM) controller. The voltage control loop senses an external voltage reference, adjusts an internal oscillator, and then generates either a fixed or adjustable high frequency sawtooth current. This current is monitored by a phase-lock loop (PLL), which is then used to control the output voltage of the regulator. The PWM controller takes the output from the PLL and generates the drive signals necessary to control the buck converter circuitry.

The LM5027MH/NOPB features adjustable soft-start and output voltage sensing, as well as over-current, over-voltage, and under-voltage protection. The device also features a power-good signal, which indicates when the load current has reached its desired level. The LM5027MH/NOPB is capable of driving a wide range of high frequency, high efficiency power conversion applications, including laptop power supplies, automotive applications, and a variety of other DC-DC switching controllers. A variety of diagnostic features and extensive protection circuitry simplify design and operation.

The LM5027MH/NOPB is a current mode, synchronous buck regulator controller that operates over a wide input voltage range of 4.5V to 28V. The device can be used to generate both fixed and adjustable output voltages up to 28V. The device is programmed using a precision resistor network, allowing for simple setup and fast, efficient operation. The device has a number of adjustable features, allowing the user to customize the power system output to meet their requirements.

The LM5027MH/NOPB features an integrated PWM generator that is optimized for high-frequency switching. The device can operate in either discontinuous-conduction (DCM) or continuous-conduction mode (CCM). Additionally, the device has a wide range of adjustable operating parameters, including pulsewidth modulation (PWM) frequency, current limit and power-good threshold, over-voltage, and under-voltage thresholds. The LM5027MH/NOPB is available in several packages, including a lead-free, 28-lead thin small outline package (TSOP-28).

In summary, the LM5027MH/NOPB is a fully-featured, high-frequency synchronous buck regulator controller from Texas Instruments, capable of driving a wide range of high-frequency, high-efficiency power conversion applications. It features adjustable soft-start, adjustable output voltage sensing and extensive protection features such as current limit, power-good threshold and over/under voltage thresholds. The device is available in several packages, including a lead-free, 28-lead thin small outline package (TSOP-28).

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