TPS65263-1Q1

ACTIVE

4.0-V to 18-V input, triple 3-A/2-A/2-A synchronous buck converter

TPS65263-1Q1

ACTIVE

Product details

Rating Automotive Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4 Vin (max) (V) 18 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2300 Features Adaptive/Dynamic Voltage Scaling, Enable, Frequency synchronization, Light Load Efficiency, Phase Interleaving, Power good, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 16 Iq (typ) (µA) 600 Duty cycle (max) (%) 100
Rating Automotive Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4 Vin (max) (V) 18 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2300 Features Adaptive/Dynamic Voltage Scaling, Enable, Frequency synchronization, Light Load Efficiency, Phase Interleaving, Power good, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 16 Iq (typ) (µA) 600 Duty cycle (max) (%) 100
VQFN (RHB) 32 25 mm² 5 x 5
  • 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
  • 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

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 start-up 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 and 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.

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 start-up 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 and 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.

Download View video with transcript Video

Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS65263EVM-645 — TPS65263EVM Evaluation Module

The TPS65263EVM-645 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS65263. The EVM contains input and output connectors as well as control jumpers to ease evaluation of device features.

User guide: PDF
Not available on TI.com
Package Pins CAD symbols, footprints & 3D models
VQFN (RHB) 32 Ultra Librarian

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos