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TPS40090PWRG4 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS40090PWRG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 31 page PW RHD 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 CS1 CS2 CS3 CS4 CSCN ILIM DROOP REF COMP FB DIFFO VOUT EN/SYNC VIN BP5 PWM1 PWM2 PWM3 PWM4 GND RT SS PGOOD GNDS FB DIFFO VOUT NC GNDS PGOOD NC 28 CS2 27 CS1 26 NC 25 NC 24 EN/SYNC 23 VIN 22 BP5 8 9 10 11 12 13 14 TPS40090 TPS40091 www.ti.com SLUS578B – OCTOBER 2003 – REVISED MAY 2006 HIGH-FREQUENCY, MULTIPHASE CONTROLLER Check for Samples: TPS40090, TPS40091 1 FEATURES PW PACKAGE 2 • Two-, Three-, or Four-Phase Operation (TOP VIEW) • 5-V to 15-V Operating Range • Programmable Switching Frequency Up to 1-MHz/Phase • Current Mode Control With Forced Current Sharing(1) (1) Patent pending. • 1% Internal 0.7-V Reference • Resistive Divider Set Output Voltage • True Remote Sensing Differential Amplifier • Resistive or DCR Current Sensing • Current Sense Fault Protection RHD PACKAGE • Programmable Load Line (BOTTOM VIEW) • Compatible with UCC37222 Predictive Gate Drive ™ Technology Drivers • 24-Pin Space-Saving TSSOP Package • 28-Pin QFN Package • TPS40090: Binary Outputs • TPS40091: 3-State Outputs APPLICATIONS • Internet Servers • Network Equipment • Telecommunications Equipment • DC Power Distributed Systems DESCRIPTION The TPS4009x is a two-, three-, or four-phase programmable synchronous buck controller that is optimized for low-voltage, high-current applications powered by a 5-V to 15-V distributed supply. A multi-phase converter offers several advantages over a single power stage including lower current ripple on the input and output capacitors, faster transient response to load steps, improved power handling capabilities, and higher system efficiency. Each phase can be operated at a switching frequency up to 1-MHz, resulting in an effective ripple frequency of up to 4-MHz at the input and the output in a four-phase application. A two-phase design operates 180 degrees out-of-phase, a three-phase design operates 120 degrees out-of-phase, and a four-phase design operates 90 degrees out-of-phase as shown in Figure 1. The number of phases is programmed by connecting the de-activated phase PWM output to the output of the internal 5-V LDO. In two-phase operation the even phase outputs should be de-activated. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 Predictive Gate Drive is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2003–2006, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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