Switch DC/DC convert circuit

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SSP9492

SSP9492 is a monolithically integrated switched-off step-down constant-voltage driver with programmable output current, which can operate over a wide input voltage range and has excellent load and linearity regulation. Safety protection mechanisms of SSP9492 include peak current limiting per cycle, soft-start, over-voltage protection, temperature protection and short circuit protection, etc. It is very suitable for wide voltage input buck use. The unique soft-switching ZVS technology combined with the super junction medium-voltage MOSFET enables efficiency up to 93%. It supports typical circuit applications such as input 48V output 12V/2.5A, input 19V output 5V/4A, input 85V output 12V/2A, input 12V output 5V/3A.

SSP9323

SSP9323 is a high frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to provide a 3A continuous output current over a wide input supply range, with excellent load and line regulation. COT PSM control operation provides very fast transient response and easy loop design as well as very tight output regulation. The RY9320 requires a minimal number of readily available, external components and is available in a space saving ESOP-8 package.

SSP9322

SSP9322 is a high frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to provide a 2A continuous output current over a wide input supply range, with excellent load and line regulation. COT PSM control operation provides very fast transient response and easy loop design as well as very tight output regulation. The RY9320 requires a minimal number of readily available, external components and is available in a space saving SOT23-6 package.

SSP9302

The SSP9302 is a compact 5V Buck Converter which can deliver 1A output current. SSP9302 employs a proprietary control loop to achieve a fast transient load response. It keeps high converting efficiency in both light load and heavy load. SSP9302 is equipped with all kinds of protection, such as input over voltage protection, output short circuit protection, over current protection and over temperature protection. SSP9302 is consists of internal power tree generator, bandgap voltage reference module, under-Voltagelockout (UVLO) module, error amplifier, protection circuitry, driver block, current sensing block and two power MOSFETs. SSP9302 is housed in a SOT23-5 package.

SSP9301

The SSP9301 is a compact 5V Buck Converter which can deliver 1A output current. SSP9301 employs a proprietary control loop to achieve a fast transient load response. It keeps high converting efficiency in both light load and heavy load. SSP9301 is equipped with all kinds of protection, such as input over voltage protection, output short circuit protection, over current protection and over temperature protection. SSP9301 is consists of internal power tree generator, bandgap voltage reference module, under-Voltagelockout (UVLO) module, error amplifier, protection circuitry, driver block, current sensing block and two power MOSFETs. SSP9301 is housed in a SOT23-5 package.

SSP9312

The SSP9312 is a high frequency, synchronous, rectified,step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to achieve a 2A continuous output current over a wide input supply range, with excellent load and line regulation.The SSP9312 requires a minimal number of readily available, external components and is available in a space saving SOT23-6 package.

SSP9458

The SSP9458 is a monolithic, step-down, switch mode converter with a built-in power MOSFET. Capable of delivering up to 600mA of output current over a wide input supply range with excellent load and line regulation. At light loads, the regulator operates in low frequency to maintain high efficiency and low output ripple. The minimum input voltage may be as low as 4.5V and the maximum up to 60V, with even higher transient voltages. Fault condition protections include cycle-by-cycle current limiting and thermal shutdown. The SSP9458 requires a minimal number of readily-available external components. The SSP9458 is available in a SOT23-6 package.

SSP9467

The SSP9467 is a high frequency step-down switching regulator with integrated internal high-side, high voltage power MOSFET. It provides 3.0A output with current mode control for fast loop response and easy compensation. The wide 6V to 40V input range accommodates a variety of step-down applications, including those in automotive systems. A 110μA operational quiescent current allows use in battery-powered applications. High power conversion efficiency over a wide load range is achieved by scaling down the switching frequency at light load condition to reduce the switching and gate driving losses. The frequency foldback prevents inductor current runaway during startup and thermal shutdown provides reliable, fault tolerant operation. The SSP9467 is available in thermally enhanced ESOIC8 package.

SSP9452

The SSP9452 is a monolithic, step-down, switch-mode converter with a built-in power MOSFET. It achieves a 1.0A peak-output current over a wide input supply range.Current-mode operation provides a fast transient response and eases loop stabilization. The wide input range (5V to 40V) provides high efficiency output of 1.0A current. Low shutdown mode quiescent current of 2μA(or less) is suitable for battery-powered applications. High efficiency at light load condition is achieved by scaling down the switching frequency to reduce the switching and gate driving losses.The frequency folding technique helps prevent the inductance current from running out of control at startup. Hot shutdown provides reliable, fault tolerant operation.

SSP8613

The SSP8613 is the industry’s first 5-lead SOT-23 current mode DC/DC converter. Intended for small, low power applications, it operates from an input voltage as lowas 1.2V and switches at 2.0MHz, allowing the use oftiny, low cost capacitors and inductors 2mm or less in height. Its small size and high switching frequency enables the complete DC/DC converter function to take up less than 0.2 square inches of PC board area. Multiple output power supplies can now use a separate regulator for each output voltage, replacing cumbersome quasi-regulated ap-proaches using a single regulator and a custom trans-former.A constant frequency, internally compensated current mode PWM architecture results in low, predictable output noise that is easy to filter. The high voltage switch on the SSP8613 is rated at 36V, making the device ideal for boost converters up to 34V as well as for Single-Ended Primary Inductance Converter (SEPIC) and flyback designs. The device can generate 5V at up to 200mA from a 3.3V supply or 5V at 175mA from four alkaline cells in a SEPIC design. The SSP8613 is available in the 5-leadSOT-23 package.

Switch DC/DC convert circuit

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