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The new DC/DC converters leverage original Nano Pulse Control™ technology to achieve an unprecedented step-down ratio combined with stable operation and high efficiency. Qualification under the AEC-Q100 automotive standard has also been acquired, guaranteeing high reliability even under harsh vehicle environments. 1. Enables stable operation without overshoot even during battery voltage fluctuations. ROHM's new products suppress voltage overshoot to less than 1/10th of conventional products when the input voltage drops below the output set voltage, keeping the output voltage to the specified voltage before fluctuation occurred. This allows users to eliminate additional capacitors typically required as a countermeasure for overshoot, ensuring stable operation even in sudden battery voltage drop such as cranking. 2. High efficiency over a wide range of load currents contributes to lower power consumption These new power supply ICs simultaneously achieve high efficiency and fast response. Conventional power supply ICs require large drive currents to ensure fast response, making it difficult to provide both high efficiency and fast response at light loads. The BD9P series utilizes a new control method to deliver faster response at lower drive currents than standard products (Figure 4). This translates to 92 percent conversion efficiency at heavy loads (at 1A output current) and 85 percent efficiency at light loads (1mA). Providing leading-class efficiency at both light and heavy loads reduces power consumption while driving and when the engine is stopped. Figure 4: The BD9P series utilizes a new control method to deliver sufficiently faster response at lower drive currents than that of standard products. (Source: ROHM Semiconductors) 30 key Features