SY88813VKG

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Linear-Amplifiers-Special Purpose are specialized in their intended application. SY88813VKG is an amplifier that falls into this category.

This voltage-controlled DC-DC gain block amplifier is utilized in switched-mode power-supply (SMPS) and DC-DC converter designs with its between amplifier stage, low quiescent current, and low output voltage range key features.

It operates with a wide input voltage range of 6V-40V and input-to-output difference of 5V-40V. This device is adjustable with an external resistor, where the voltage gains range from 20:1 to 150:1. SY88813VKG also limits input current with a very low quiescent current value.

SY88813VKG also has a very low open loop offset voltage (~200mV), which enables an increased power density, efficiency and dynamic range. Additionally, the feedback pin provides a way to match the average loop-gain and balance the system IMD performance.

SY88813VKG applies the operational amplifiers to drive the external switch FETs and optimize the signal-to-noise ratio. This makes it perfect for DC-DC converter designs and switching amplifier applications.

SY88813VKG has two major external components, an N-channel MOSFET and an inductor. The MOSFET will be used to switch on and off the voltage gain that needs to be implemented in an SMPS or DC-DC converter. The inductor is connected to a voltage source, The voltage is adjusted using an external resistor. The inductor stores energy while the MOSFET is ON and re-energizes it while the MOSFET is off.

The main functionality of SY88813VKG is to control the input voltage and convert it to a desired voltage level. The voltage is controlled by changing the pulse width of the control signal sent to the gate of the MOSFET. The on-board op-amp will limit the input current by controlling the MOSFET switch on-off time. When the input current exceeds the set limit, the op-amp will reduce the pulse width and reduce the input current.

SY88813VKG can also be used for voltage-follower applications. In these applications, the gain of the amplifier is set equal to the input voltage. This can be used to supply independent and isolated power supplies to multiple loads with different voltage levels.

SY88813VKG is a versatile voltage-controlled gain block amplifier that is optimized for the power-supply and DC-DC converter designs. It offers a very low quiescent current and wide voltage range from 6V-40V. Its adjustable gain from 20:1 to 150:1.

It has a very low open loop offset voltage and is perfect for switching amplifier and voltage-follower applications. The on-board op-amp will limit the input current and make it suitable for applications like SMPS and DC-DC converters.

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