TPS65263-1Q1 4.5V-18V Input, Triple 3A/2A/2A Synchronous Buck Converter

Description

The TPS65263-1Q1 incorporates triple-synchronous buck converters with 4.0- to 18-V wide input voltage. 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 is adjustable from 200 kHz to 2.3 MHz with an external resistor. 180° out-of-phase operation between buck1 and buck2, buck3 (buck2 and buck3 run in phase) minimizes the input filter requirements.

The initial startup voltage of each buck can be set with external feedback resistors. The output voltage of buck2 can be dynamically scaled from 0.68 to 1.95 V in 10-mV steps with I²C-controlled 7 bits VID. The VID voltage transition slew rate is programmable with 3-bits control through I²C bus to optimize overshoot/undershoot during VID voltage transition.

Each buck in TPS65263-1Q1 can be I²C controlled for enabling/disabling output voltage, setting the pulse skipping mode (PSM) or forced continuous current (FCC) mode at light load condition and reading the power-good status, overcurrent warning, and die temperature warning.

The TPS65263-1Q1 features overvoltage, overcurrent, short-circuit, and overtemperature protection.

Features

Qualified for Automotive Applications
AEC-Q100 Qualification With the Following Results:
- Device Temperature Grade 1: –40°C to 125°C Operating Junction Temperature Range
- Device HBM ESD Classification Level H2
- Device CDM ESD Classification Level C4B
Operating Input Voltage Range 4.0- to 18-V Maximum Continuous Output Current 3 A/2 A/2 A
I²C Controlled 7-Bits VID Programmable Output Voltage from 0.68 to 1.95 V With 10-mV Voltage Step for Buck2
I²C Controlled VID Voltage Transition Slew Rate for Buck2
I²C Read Back Power Good Status, Overcurrent Warning and Die Temperature Warning
I²C Compatible Interface With Standard Mode (100 kHz) and Fast Mode (400 kHz)
Feedback Reference Voltage 0.6 V ±1%
Adjustable Clock Frequency from 200 kHz to 2.3 MHz
FCC Mode (Default)
External Clock Synchronization
Dedicated Enable and Soft-Start Pins for Each Buck
Output Voltage Power Good Indicator
Thermal Overloading Protection

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Parametrics

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Part number	Order	Vin (Min) (V)	Vin (Max) (V)	Vout (Min) (V)	Vout (Max) (V)	Iout (Max) (A)	Regulated outputs (#)	Switching frequency (Min) (kHz)	Switching frequency (Max) (kHz)	Iq (Typ) (mA)	Features	Control mode	Duty cycle (Max) (%)	Operating temperature range (C)	Rating	Package Group	Type	Package size: mm2:W x L (PKG)
TPS65263-1Q1	Order now	4	18	0.6	16	3	3	200	2300	0.6	Enable Frequency Synchronization Light Load Efficiency Phase Interleaving Power Good Synchronous Rectification UVLO Adjustable Adaptive/Dynamic Voltage Scaling Soft Start Adjustable	Current Mode	100	-40 to 125	Automotive	VQFN \| 32	Converter	32VQFN: 25 mm2: 5 x 5 (VQFN \| 32)
TPS65263-Q1	Order now	4	18	0.6	16	3	3	200	2300	0.6	Enable Frequency Synchronization Light Load Efficiency Phase Interleaving Power Good Synchronous Rectification UVLO Adjustable Adaptive/Dynamic Voltage Scaling Soft Start Adjustable	Current Mode	100	-40 to 125	Automotive	VQFN \| 32	Converter	32VQFN: 25 mm2: 5 x 5 (VQFN \| 32)
TPS65268-Q1	Order now	4	8	0.6	6	3	3	200	2300	0.6	Enable Forced PWM Frequency Synchronization Over Current Protection Power Good Synchronous Rectification Tracking UVLO Adjustable Soft Start Adjustable	Current Mode	100	-40 to 125	Automotive	VQFN \| 32	Converter	32VQFN: 25 mm2: 5 x 5 (VQFN \| 32)

TPS65263-1Q1 (ACTIVE) 4.5V-18V Input, Triple 3A/2A/2A Synchronous Buck Converter

Description

Features

Parametrics