High-Voltage Synchronous Buck Control IC Minimises EMI

The MIC2130/1 are high-voltage PWM synchronous buck controllers. The new MIC2131 implements a feature to minimise EMI, which is critical for systems that need to be compliant with EMI standards.

Both devices are voltage-mode controllers with a fast hysteretic control loop employed during fast line and load transients. The internal gate drivers are designed to drive high-current MOSFETs.

The MIC2130/1 can produce output voltages down to 0.7V with input voltages from 8V to 40V and implement fixed-frequency PWM control. The active anti-shoot-through drive scheme means a wide range of external MOSFETs may be used while maintaining optimum efficiency.

TheMIC2130 andMIC2131 are available in a 16-pin 4mmx 4mmMLF® package, as well as 16-pin e-TSSOP, with a junction temperature range from -40 °C to 125 °C.

 

FEATURES Adjustable output voltages down to 0.7V Fixed 150kHz and 400kHz frequency options Excellent line and load regulation due to fast hysteretic control loop during transients Adaptive gate drive allows efficiencies over 95% Programmable current limit with no sense resistor Senses low-side MOSFET current Internal drivers allow 15A output current Power-good output allow simple sequencing Programmable soft-start pin Output over-voltage protection Programmable input under-voltage lockout

APPLICATIONS DC/DC point-of-use power industrial/medical Printer-head drivers Automotive systems Telecom systems LCD/plasma TVs

 

 

Micrel / MIC2130/1