UCD7230A Series

15.5 V, 2 MHz, 4 A synchronous buck MOSFET™ driver compatible with UCD92xx and improved power on

Catalog

15.5 V, 2 MHz, 4 A synchronous buck MOSFET™ driver compatible with UCD92xx and improved power on

Part	Function	Topology	Control Features	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Mounting Type	Output Phases	Operating Temperature [Min]	Operating Temperature [Max]	Frequency - Switching [Max]	Supplier Device Package	Package / Case	Package / Case [custom]	Package / Case	Number of Outputs	Output Configuration	Output Type	Frequency - Switching [Min]
Texas Instruments UCD7230PWPR	Step-Down	Buck	Current Limit Enable	15.5 V	4.5 V	Surface Mount	1	-40 °C	125 ¯C	2 MHz	20-HTSSOP	20-PowerTSSOP	4.4 mm	0.173 in	1	Positive	Transistor Driver
Texas Instruments UCD7230PWP	Step-Down	Buck	Current Limit Enable	15.5 V	4.5 V	Surface Mount	1	-40 °C	125 ¯C	2 MHz	20-HTSSOP	20-PowerTSSOP	4.4 mm	0.173 in	1	Positive	Transistor Driver
Texas Instruments UCD7230ARGWT	Step-Down	Buck	Current Limit Enable	15.5 V	4.75 V	Surface Mount	1	-40 °C	125 ¯C	2 MHz	20-VQFN (5x5)	20-VQFN Exposed Pad			1	Positive	Transistor Driver	200 kHz
Texas Instruments UCD7230RGWRG4	Step-Down	Buck	Current Limit Enable	15.5 V	4.5 V	Surface Mount	1	-40 °C	125 ¯C	2 MHz	20-VQFN (5x5)	20-VQFN Exposed Pad			1	Positive	Transistor Driver
Texas Instruments UCD7230RGWTG4	Step-Down	Buck	Current Limit Enable	15.5 V	4.5 V	Surface Mount	1	-40 °C	125 ¯C	2 MHz	20-VQFN (5x5)	20-VQFN Exposed Pad			1	Positive	Transistor Driver
Texas Instruments UCD7230RGWT	Step-Down	Buck	Current Limit Enable	15.5 V	4.5 V	Surface Mount	1	-40 °C	125 ¯C	2 MHz	20-VQFN (5x5)	20-VQFN Exposed Pad			1	Positive	Transistor Driver
Texas Instruments UCD7230ARGWR	Step-Down	Buck	Current Limit Enable	15.5 V	4.75 V	Surface Mount	1	-40 °C	125 ¯C	2 MHz	20-VQFN (5x5)	20-VQFN Exposed Pad			1	Positive	Transistor Driver	200 kHz

Catalog

15.5 V, 2 MHz, 4 A synchronous buck MOSFET™ driver compatible with UCD92xx and improved power on

Key Features

• Input from Digital Controller Sets Operating Frequency and Duty CycleUp to 2-MHz Switching FrequencyDual Current Limit Protection with Independently Adjustable ThresholdsFast Current Sense Circuit with Adjustable Blanking Interval Prevents Catastrophic Current LevelsDigital Output Current Limit FlagLow Offset, Gain of 48, Differential Current Sense Amplifier3.3-V, 10-mA Internal RegulatorDual TrueDrive™ High-Current Drivers10-ns Typical Rise/Fall Times with 2.2-nF Loads4.5-V to 15.5-V Supply Voltage RangeAPPLICATIONSDigitally-Controlled Synchronous-Buck Power Stages for Single and Multi-Phase ApplicationsEspecially Suited for Use with UCD91xx or UCD92xx ContollersHigh-Current Multi-Phase VRM/EVRD Regulators for Desktop, Server, Telecom and Notebook ProcessorsDigitally-Controlled Synchronous-Buck Power Supplies Using µCs or the TMS320 DSP FamilyTrueDrive is a trademark of Texas Instruments.Input from Digital Controller Sets Operating Frequency and Duty CycleUp to 2-MHz Switching FrequencyDual Current Limit Protection with Independently Adjustable ThresholdsFast Current Sense Circuit with Adjustable Blanking Interval Prevents Catastrophic Current LevelsDigital Output Current Limit FlagLow Offset, Gain of 48, Differential Current Sense Amplifier3.3-V, 10-mA Internal RegulatorDual TrueDrive™ High-Current Drivers10-ns Typical Rise/Fall Times with 2.2-nF Loads4.5-V to 15.5-V Supply Voltage RangeAPPLICATIONSDigitally-Controlled Synchronous-Buck Power Stages for Single and Multi-Phase ApplicationsEspecially Suited for Use with UCD91xx or UCD92xx ContollersHigh-Current Multi-Phase VRM/EVRD Regulators for Desktop, Server, Telecom and Notebook ProcessorsDigitally-Controlled Synchronous-Buck Power Supplies Using µCs or the TMS320 DSP FamilyTrueDrive is a trademark of Texas Instruments.

Description

The UCD7230A is one in the UCD7k family of digital control compatible drivers for applications utilizing digital control techniques or applications requiring fast local peak current limit protection. The UCD7230A is a MOSFET gate driver specifically designed for synchronous buck applications. It is ideally suited to provide the bridge between digital controllers such as the UCD91xx or the UCD92xx and the power stage. With cycle-by-cycle current limit protection, the UCD7230A device protects the power stage from faulty input signals or excessive load currents. The UCD7230A includes high-side and low-side gate drivers which utilize Texas Instrument’s TrueDrive output architecture. This architecture delivers rated current into the gate capacitance of a MOSFET during the Miller plateau region of the switching. Furthermore, the UCD7230A offers a low offset differential amplifier with a fixed gain of 48. This amplifier greatly simplifies the task of conditioning small current sense signals inherent in high efficiency buck converters. The UCD7230A includes a 3.3-V, 10-mA linear regulator to provide power to digital controllers such as the UCD91xx. The UCD7230A is compatible with standard 3.3-V I/O ports of the UCD91xx, the TMS320™ family DSPs, microprocessors, or ASICs. The UCD7230A is offered in the space-saving QFN package. Package pin out has been carefully designed for optimal board layout The UCD7230A is one in the UCD7k family of digital control compatible drivers for applications utilizing digital control techniques or applications requiring fast local peak current limit protection. The UCD7230A is a MOSFET gate driver specifically designed for synchronous buck applications. It is ideally suited to provide the bridge between digital controllers such as the UCD91xx or the UCD92xx and the power stage. With cycle-by-cycle current limit protection, the UCD7230A device protects the power stage from faulty input signals or excessive load currents. The UCD7230A includes high-side and low-side gate drivers which utilize Texas Instrument’s TrueDrive output architecture. This architecture delivers rated current into the gate capacitance of a MOSFET during the Miller plateau region of the switching. Furthermore, the UCD7230A offers a low offset differential amplifier with a fixed gain of 48. This amplifier greatly simplifies the task of conditioning small current sense signals inherent in high efficiency buck converters. The UCD7230A includes a 3.3-V, 10-mA linear regulator to provide power to digital controllers such as the UCD91xx. The UCD7230A is compatible with standard 3.3-V I/O ports of the UCD91xx, the TMS320™ family DSPs, microprocessors, or ASICs. The UCD7230A is offered in the space-saving QFN package. Package pin out has been carefully designed for optimal board layout