TPS65653-Q1 Automotive 4-MHz, dual 3-A buck converters with integrated switches |

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Automotive 4-MHz, dual 3-A buck converters with integrated switches

Automotive 4-MHz, dual 3-A buck converters with integrated switches - TPS65653-Q1


The TPS65653-Q1 is designed to provide a tight power specification for noise sensitive applications, such as radar. The device contains two step-down DC/DC converters and general-purpose digital-output signals. The device is controlled by an I2C-compatible serial interface and by an enable signal.

The automatic PWM/PFM (AUTO mode) operation gives high efficiency over a wide output-current range. The TPS65653-Q1 supports remote voltage sensing to compensate IR drop between the regulator output and the point-of-load (POL) thus improving the accuracy of the output voltage. In addition the switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances.

The TPS65653-Q1 device supports programmable start-up and shutdown delays and sequences including GPO signals synchronized to the enable signal. During start-up and voltage change, the device controls the output slew rate to minimize output voltage overshoot and the in-rush current.


  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Input voltage: 2.8 V to 5.5 V
  • Two high-efficiency step-down DC/DC converters:
    • Output voltage: 1 V to 3.36 V
    • Maximum output current 3 A
    • Programmable output-voltage slew rate from 0.5 mV/µs to 10 mV/µs
    • 4-MHz Switching frequency
    • Spread-spectrum mode and phase interleaving for EMI reduction
  • Configurable general-purpose output signals (GPO, GPO2)
  • I2C-compatible interface supporting standard (100 kHz), fast (400 kHz), fast+ (1 MHz), and high-speed (3.4 MHz) modes
  • Interrupt function with programmable masking
  • Programmable power-good signal (PGOOD)
  • External clock input to synchronize switching
  • Output short-circuit and overload protection
  • Overtemperature warning and protection
  • Overvoltage protection (OVP) and undervoltage lockout (UVLO)
  • 28-pin, 5-mm × 5-mm VQFN package with wettable flanks

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Part number Order Regulated outputs (#) Processor supplier Processor name Vin (Min) (V) Vin (Max) (V) Step-up DC/DC controller Step-down DC/DC controller LDO Step-up DC/DC converter Step-down DC/DC converter Iout (Max) (A) Iq (Typ) (mA) Features Rating Operating temperature range (C) Configurability Package Group Package size: mm2:W x L (PKG)
TPS65653-Q1 Order now 2     Texas Instruments     AWR1843     2.8     5.5     0     0     0     0     2     3     0.009     Enable Pin
I2C Control
Power Good
Power Sequencing
Spread-Spectrum Clock (SSC) Generation
Thermal Shutdown
UVLO Adjustable    
Automotive     -40 to 125     Factory programmable
Software configurable    
VQFN | 28     28VQFN: 25 mm2: 5 x 5 (VQFN | 28)