评估模块, 用于高电源密度 POL, 同步降压控制器
The is an evaluation module for LM27403 device. The LM27403 is a feature rich, easy to use, synchronous buck controller offering exceptional levels of integration and performance for superior efficiency in high power density, point of load POL DC to DC regulator solutions. The LM27403EVM-POL600 is a 600KHz synchronous buck DC to DC regulator showcasing high power density and high efficiency. A 20mm x 15mm module on a single side PCB uses a power block MOSFET. Accurate overcurrent protection is available by leveraging the inductor"s sub mohm DCR and MOSFET package resistance. A 2N3904 BJT senses temperature to compensate for the copper temperature coefficient and to provide a thermal shutdown function based on a desired temperature setpoint. Precision enable, power supply tracking, open drain power good indicator, remote sense and synchronization features are also provided. The module is solder mounted directly on the motherboard for maximum thermal performance.
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- Wide input voltage operating range of 3V to 20V
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- Configurable remote output voltage sensing for optimal load regulation performance
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- High conversion efficiency of 91% at 1.8V and 30A
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- Synchronizable to an external clock signal up to 1.2MHz
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- DCR current sensing with temperature compensation
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- 200A/in3 high current and power per unit volume
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- Single supply rail, no additional bias voltage required
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- Adjustable output voltage from 0.6V to 5.5V by changing "trim" resistance
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- Nominal output voltage of 1.8V with 1% feedback accuracy
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- Input circuit damping with optional electrolytic capacitor
ESD sensitive device, take proper precaution while handling the device.
Exercise care when touching the evaluation module while the fan is not running.