TPS65265 Series

4.5- to 17-V Input Voltage, 5-A/3-A/2-A Output Current Triple Buck Converter

Catalog

4.5- to 17-V Input Voltage, 5-A/3-A/2-A Output Current Triple Buck Converter

Part	Output Configuration	Function	Voltage - Input (Max) [Max]	Current - Output	Number of Outputs	Topology	Mounting Type	Output Type	Voltage - Input (Min) [Min]	Voltage - Output (Min/Fixed)	Operating Temperature [Min]	Operating Temperature [Max]	Frequency - Switching [Max]	Frequency - Switching [Min]	Supplier Device Package	Package / Case	Voltage - Output (Max) [Max]	Synchronous Rectifier
Texas Instruments TPS65265RHBT	Positive	Step-Down	17 V	2 A 3 A 5 A	3	Buck	Surface Mount	Adjustable	4.5 V	0.6 V	-40 °C	125 ¯C	2.3 MHz	250 kHz	32-VQFN (5x5)	32-VFQFN Exposed Pad	17 V
Texas Instruments TPS65265RHBR	Positive	Step-Down	17 V	2 A 3 A 5 A	3	Buck	Surface Mount	Adjustable	4.5 V	0.6 V	-40 °C	125 ¯C	2.3 MHz	250 kHz	32-VQFN (5x5)	32-VFQFN Exposed Pad	17 V

Catalog

4.5- to 17-V Input Voltage, 5-A/3-A/2-A Output Current Triple Buck Converter

Key Features

• Operating input voltage range 4.5 V to 17 VFeedback reference voltage 0.6 V ±1.33%Continuous output current 5 A/3 A/2 AAdjustable clock frequency from 250 kHz to 2.3 MHzExternal synchronization oscillator120° out of phase for Buck1, Buck2, Buck3Dedicated enable pins for each buckFixed SS time for each buck (2.4 ms)Automatic power-up, power-down sequence and adjustable interval time between bucks (6 combinations)Support Pulse Skipping Mode (PSM) and Forced Continuous Current Mode (FCCM)Output voltage power-good indicator and adjustable delay timeThermal overloading protection32-pin QFN (RHB) 5-mm × 5-mm packageOperating input voltage range 4.5 V to 17 VFeedback reference voltage 0.6 V ±1.33%Continuous output current 5 A/3 A/2 AAdjustable clock frequency from 250 kHz to 2.3 MHzExternal synchronization oscillator120° out of phase for Buck1, Buck2, Buck3Dedicated enable pins for each buckFixed SS time for each buck (2.4 ms)Automatic power-up, power-down sequence and adjustable interval time between bucks (6 combinations)Support Pulse Skipping Mode (PSM) and Forced Continuous Current Mode (FCCM)Output voltage power-good indicator and adjustable delay timeThermal overloading protection32-pin QFN (RHB) 5-mm × 5-mm package

Description

The TPS65265 incorporates triple synchronous buck converters with 4.5-V to 17-V wide input voltage range that encompassed most intermediate bus voltage operating off 5-, 9-, 12- or 15-V power bus or battery. The converter with constant frequency peak current mode is designed to simplify its application while giving designers options to optimize the system according to targeted applications. The switching frequency of the converters can be adjustable from 250 kHz to 2.3 MHz with an external resistor or external clock. 120° out-of-phase operation between Buck1, Buck2, and Buck3 minimizes the input filter requirements. The TPS65265 operates in pulse skipping mode (PSM) with driving MODE pin to high or leaving float and operates in force continuous current mode (FCC) with connecting MODE pin to GND. PSM mode provides high efficiency by reducing switching losses at light load and FCC mode reduces noise susceptibility and RF interference. The TPS65265 is available in a 32-pin thermal enhanced QFN (RHB) 5-mm × 5-mm thin package. The TPS65265 incorporates triple synchronous buck converters with 4.5-V to 17-V wide input voltage range that encompassed most intermediate bus voltage operating off 5-, 9-, 12- or 15-V power bus or battery. The converter with constant frequency peak current mode is designed to simplify its application while giving designers options to optimize the system according to targeted applications. The switching frequency of the converters can be adjustable from 250 kHz to 2.3 MHz with an external resistor or external clock. 120° out-of-phase operation between Buck1, Buck2, and Buck3 minimizes the input filter requirements. The TPS65265 operates in pulse skipping mode (PSM) with driving MODE pin to high or leaving float and operates in force continuous current mode (FCC) with connecting MODE pin to GND. PSM mode provides high efficiency by reducing switching losses at light load and FCC mode reduces noise susceptibility and RF interference. The TPS65265 is available in a 32-pin thermal enhanced QFN (RHB) 5-mm × 5-mm thin package.