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TPS55386PWPR Datasheet(PDF) 1 Page - Texas Instruments |
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TPS55386PWPR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 41 page 1 FEATURES CONTENTS DESCRIPTION APPLICATIONS 1 2 3 4 16 15 14 13 PVDD2 BOOT2 SW2 BP PVDD1 BOOT1 SW1 GND TPS55383 5 6 7 12 11 10 SEQ ILIM2 FB2 EN1 EN2 FB1 OUTPUT1 OUTPUT2 V IN UDG-08045 8 9 COMP2 COMP1 TPS55383 ,, TPS55386 www.ti.com ......................................................................................................................................................................................... SLUS818 – SEPTEMBER 2008 3-A DUAL NON-SYNCHRONOUS CONVERTER WITH INTEGRATED HIGH-SIDE MOSFET AND EXTERNAL COMPENSATION 23 • 4.5-V to 28-V Input Range Device Ratings 2 • Output Voltage 0.8 V to 90% of Input Voltage Electrical Characteristics 4 Device Information 10 • Output Current Up to 3 A Application Information 13 • Two Fixed Switching Frequency Versions: Design Examples 30 – TPS55383: 300 kHz Additional References 39 – TPS55386: 600 kHz • Three Selectable Levels of Overcurrent Protection (Output 2) The TPS55383 and TPS55386 are dual output, • 0.8-V 1.75% Voltage Reference non-synchronous buck converters capable of • 2.1-ms Internal Soft Start supporting 3-A output applications that operate from a • Dual PWM Outputs 180° Out-of-Phase 4.5-V to 28-V input supply voltage, and require output voltages between 0.8 V and 90% of the input voltage. • Ratiometric or Sequential Startup Modes • Configurable as Dual Output or Two-Channel With an internally-determined operating frequency Single Output Multiphase for 6 amp Capability and soft start time, these converters provide many features with a minimum of external components. The • 85-mΩ Internal High-Side MOSFETs outputs of the two error amplifiers are accessible • Current Mode Control with External allowing user optimization of the feedback loop under Compensation a wide range of output filter characteristics. • Pulse-by-Pulse Overcurrent Protection Channel 1 overcurrent protection is set at 4.5 A, while Channel 2 overcurrent protection level is selected by • Thermal Shutdown Protection at +148°C connecting a pin to ground, to BP, or left floating. The • 16-Pin PowerPAD™ HTSSOP package setting levels are used to allow for scaling of external components for applications that do not need the full load capability of both outputs. • Set Top Box The outputs may be enabled independently, or • Digital TV configured to allow either ratiometric or sequential • Power for DSP startup sequencing. Additionally, the two outputs may be powered from different sources. • Consumer Electronics 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 PowerPAD is a trademark of Texas Instruments. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2008, 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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