UCD7201 Status: ACTIVE

Product Information

Features

• Adjustable Current Limit Protection
• 3.3-V, 10-mA Internal Regulator
• DSP/µC Compatible Inputs
• Dual ±4-A TrueDrive High Current Drivers
• 10-ns Typical Rise and Fall Times with 2.2-nF Loads
• 20-ns Input-to-Output Propagation Delay
• 25-ns Current Sense-to-Output Propagation Delay
• Programmable Current Limit Threshold
• Digital Output Current Limit Flag
• 4.5-V to 15-V Supply Voltage Range
• Rated from -40°C to 105°C
• Lead(Pb)-Free Packaging
• APPLICATIONS
  • Digitally Controlled Power Supplies
  • DC/DC Converters
  • Motor Controllers
  • Line Drivers

TrueDrive, PowerPAD are trademarks of Texas Instruments.

Description

The UCD7201 is a member of the UCD7K family of digital control compatible drivers for applications utilizing digital control techniques or applications requiring fast local peak current limit protection.

The UCD7201 includes dual low-side ±4-A high-current MOSFET gate drivers. It allows the digital power controllers such as UCD9110 or UCD9501 to interface to the power stage in double ended topologies. It provides a cycle-by-cycle current limit function for both driver channels, a programmable threshold and a digital output current limit flag which can be monitored by the host controller. With a fast cycle-by-cycle current limit protection, the driver can turn off the power stage in the event of an overcurrent condition.

For fast switching speeds, the UCD7201 output stages use the TrueDrive™ output architecture, which delivers rated current of ±4 A into the gate of a MOSFET during the Miller plateau region of the switching transition. It also includes a 3.3-V, 10-mA linear regulator to provide power to the digital controller.

For similar applications requiring direct start-up capability from higher voltages such as the 48-V telecom input line, the UCD7601 includes a 110-V high-voltage startup circuit.

The UCD7K driver family is compatible with standard 3.3-V I/O ports of DSPs, Microcontrollers, or ASICs. UCD7201 is offered in PowerPAD™ HTSSOP-14 or space-saving QFN-16 packages.