These switched-mode power supply devices embed a full set of protection functions(overcurrent, overvoltage, over-temperature) to increase the MTBF and reduce the number of external components needed for power conversion.
Undervoltage lockout, soft-start, switching frequency, maximum duty cycle, and overcurrent protection limit are all adjustable using a minimum number of external components.
Also, circuit examples in which external components required by specific ICs and devices are positioned and optimized are provided by manufacturers, in the guise of evaluation circuits and demo circuits; these can be used to greatly speed up design.
The circuits are simple with only a few external components, but the boost convert requires an inductor and Schottky diode. Some competing boost converters integrate the Schottky diode, but usually with a reduction in efficiency.
R1245 includes a soft start circuit and latch or fold-back protection circuit. By simply using an inductor, resistors, a diode, and capacitors as external components, a high-efficiency step-down DC/DC converter can be easily configured.
Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, improved line and load specifications, fixed-frequency oscillator, Shutdown/Soft-start, output error flag, and flag delay.
This page also provides example applications and a typical application circuit, which can be used to determine whether or not the specific application for which the device being designed is taken into consideration. The required external components and the number of such components can be determined from the circuit; it is also possible to visualize the required components sizes.
The H-bridge of the AP1029ADN employs the P-N construction that eliminates the need for charge pump reducing the external parts, and its low on-resistance realizes high efficiency while keeping low consumption. An anomaly detection output pin, under voltage detection circuit, thermal shut down circuit and over-current protection circuit are integrated.
The operating frequency is pin-selectable and can be optimized for high efficiency or minimum external component size: at 650 kHz they provide 90% efficiency; at 1.3 MHz their circuit implementation occupies the smallest space, making them ideal for space-constrained environments in portable devices and liquid-crystal displays.
Sanken Electric has thus developed the SI-8000HFE Series step-down switching regulator ICs, built in a compact package(5-pin TO220F) and capable of supplying an output current of 5.5 A. The SI-8000HFE Series incorporates a phase correction circuit internally for stabilizing output voltage so that the six external components normally needed in the regulator circuit can be reduced to four.
This broad portfolio of ICs is composed of highly-specialized products to meet every market requirement: High-voltage technology together with high reliability, robustness and compactness for industrial and automotive applications High efficiency at any load and a high level of performance for consumer and computer products These buck regulators embed a full set of protection functions(overcurrent, overvoltage, over-temperature) to increase the MTBF and reduce the number of external components.
外付け部品点数を最大30個削減可能。
Eliminates up to 30 external components.
リップル対策の余計な外付け部品も不要です。
External parts to reduce ripple are not required.
MHzの固定周波数スイッチングによって、外付け部品の小型化が可能です。
The 1MHz fixed-frequency switching allows for tiny external components.
この結果、外付け部品点数とソリューションコストが大幅に削減されました。
In this way, the number of external components and the solution cost are substantially decreased.
高周波動作は、小型の外付け部品の使用およびノイズスペクトラム計画に重要です。
High-frequency operation is crucial for the use of small external components and noise-spectrum planning.
また、このアプリケーションで使用する外付け部品の数はできるだけ少なくしています。
The DS1803 digital potentiometer serves as the example device and a minimum number of external components is used in this application.
豊富な保護機能を搭載し、少ない外付け部品で3相ブラシレスモータを駆動できます。
Since the IC has the various protection functions, it can drive 3-phase brushless motor with few external components.
必要最小限の外付け部品と優れた保護機能により、業界トップの電力密度と機能を実現します。
Extensive protection features with minimum external components provide industry leading power density and functionality.
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