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Buck-boost DC/DC is qualified for automotives

Posted: 24 Apr 2007 ?? ?Print Version ?Bookmark and Share

Keywords:buck-boost DC/DC converter? power-management IC? automotive-qualified DC/DC converter?

Texas Instruments Inc. has introduced an automotive-qualified DC/DC power-management IC that switches autonomously between buck and boost modes to provide a constant regulated output voltage of 5V.

The TPIC74100-Q1 operates over an input voltage range of 1.5-40V and simplifies design by eliminating the need for external components. The device also minimizes EMI in the system by implementing a clock modulator and adjustable slew rate.

The switch-mode regulator of the device has 5V 2 percent during normal mode and 5V 3 percent during low-power or crossover mode. The device's switching frequency of 440kHz (typical) is outside of the AM frequency band.

The device has an input operating range of 1.5-40V (Vdriver), which features the following: 1A load-current capability, 200mA load-current capability down to 2V input (Vdriver) and 120mA load-current capability down to 1.5V input (Vdriver). It also has disable and low-power operation modes to optimize power savings.

TPIC74100-Q1 has a reset function with deglitch timer and programmable delay that enables increased reliability in the system. The device also offers programmable alarm function for undervoltage detection and indication. It also comes available in a thermally-enhanced package for efficient heat management.

TPIC74100-Q1 voltage regulators are available today in volume in a 20-pin HTSSOP PowerPAD package. Pricing starts at $1.70 in quantities of 1,000 units.

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