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UCD7230RGWT Datasheet(PDF) 2 Page - Texas Instruments |
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UCD7230RGWT Datasheet(HTML) 2 Page - Texas Instruments |
2 / 26 page DLY SRE AGND 3V3 UCD7230 IN VDD DPWMB0 UCD9112 A0 I0 CLF ILIM DPWMA0 RB1/TMRI1 OUT1 CSBIAS SW 6 5 4 2 COMMUNICATION (Programming& StatusReporting) 1 VIN 10 7 9 8 OUT2 2 1 3 2 2 ADC2 RB0 AD33 EAP EAM VOUT VOUT VD25 RST ADC3 AVSS 2 1 RNEG RPOS GSENSE GSENSE 20 18 CS+ 15 PVDD 19 17 BST 16 12 NEG 14 PGND 13 11 POS UCD7230 SLUS741D – NOVEMBER 2006 – REVISED JANUARY 2010 www.ti.com The UCD7230 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 UCD95xx and the power stage. With cycle-by-cycle current limit protection, the UCD7230 device protects the power stage from faulty input signals or excessive load currents. The UCD7230 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 UCD7230 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 UCD7230 includes a 3.3-V, 10-mA linear regulator to provide power to digital controllers such as the UCD91xx. The UCD7230 is compatible with standard 3.3-V I/O ports of the UCD91xx, the TMS320TM family DSPs, mCs, or ASICs. The UCD7230 is offered in PowerPAD™ HTSSOP or space-saving QFN packages. Package pin out has been carefully designed for optimal board layout SIMPLIFIED APPLICATION DIAGRAMS Figure 1. Single-Phase Synchronous Buck Converter using UCD9112 and one UCD7230 2 Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): UCD7230 Obsolete Device |
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