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TPS543620RPYR

4-18V/6A sync buck SWIFT, internal comp, 5 freq options, HotRod VQFN-14, 0.5V ref

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Pieza del fabricante：

TPS543620RPYR

Paquete：

VQFN-HR-14 (2.5 x 3.0 x 0.9 mm, RPY package)

Marca：
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Descripción

Productos

The TPS543620RPYR from Texas Instruments is a 4V to 18V input, 6A synchronous SWIFT step-down converter with internally compensated advanced current mode control in a 14-pin HotRod VQFN package.

Especificaciones

Topology Synchronous Buck (SWIFT)
Input Voltage 4V to 18V
Output Voltage 0.5V to 5.5V (adjustable)
Corriente de salida 6A
Switching Frequency 500kHz / 750kHz / 1MHz / 1.5MHz / 2.2MHz (pin-selectable)
Reference Voltage 0.5V +/-1%
Control Mode Advanced Current Mode (internally compensated)
Synchronous Rectifier Yes (integrated)
Paquete 14-Pin VQFN-HR (2.5 x 3.0mm, HotRod)
Temperatura de funcionamiento -40 to +150 C (TJ)

Características

  • 6A output current in compact 2.5x3mm HotRod QFN
  • Internally compensated – no external compensation network
  • 5 frequency options via pin selection (no external resistor)
  • Spread spectrum option for EMI reduction
  • DCS-Control with forced PWM and auto PFM modes
  • Power-good output
  • 2V/line precision reference (0.5V +/-1%)

Aplicaciones

  • Point-of-load regulation for FPGAs/processors
  • Industrial 12V/24V to low-voltage conversion
  • Telecom and networking equipment
  • Embedded computing power supplies

The TPS543620RPYR from Texas Instruments is a 6A synchronous step-down DC/DC converter from the SWIFT (Switcher With Integrated FET Technology) family, featuring a wide 4V to 18V input range and an adjustable output from 0.5V to 5.5V. The device uses Advanced Current Mode (ACM) control with internal compensation, eliminating the need for external compensation components and simplifying design. The switching frequency can be selected from five options (500kHz, 750kHz, 1MHz, 1.5MHz, or 2.2MHz) via the FSEL pin configuration, allowing designers to optimize efficiency versus solution size without adding external frequency-setting resistors. The HotRod QFN package technology mounts the die with copper pillars directly to the leadframe, eliminating bond wire resistance and inductance for improved efficiency and lower EMI. The integrated high-side and low-side MOSFETs deliver up to 6A continuous output current in a compact 2.5×3.0mm footprint. The device supports both forced PWM mode (for tight output regulation and constant frequency) and auto PFM/PWM mode (for high efficiency at light loads). A spread spectrum option modulates the switching frequency to reduce peak EMI emissions. Protection features include cycle-by-cycle current limit, output overvoltage protection, undervoltage lockout, and thermal shutdown. A power-good (PG) output indicates when the output is within regulation. The 0.5V +/-1% reference voltage enables very low output voltages for modern processors.

The TPS543620RPYR operates as a synchronous buck converter using Advanced Current Mode (ACM) control. Key subsystems include: (1) Advanced Current Mode Control – a proprietary current-mode control scheme with internal Type-III compensation that maintains stability across a wide range of input voltages, output voltages, and inductor values without external compensation components; the emulated current ramp provides robust noise immunity; (2) Integrated Power MOSFETs – the HotRod QFN package directly connects the die to the leadframe through copper pillars, reducing parasitic inductance and resistance; the high-side MOSFET (VIN to SW) and low-side MOSFET (SW to GND) are both integrated; (3) Frequency Selection – the FSEL pin configures the switching frequency among five options; higher frequencies enable smaller inductors but reduce efficiency due to increased switching losses; (4) DCS-Control Topology – the device can operate in forced PWM mode (constant frequency regardless of load) or auto PFM/PWM mode (switches to PFM at light loads for higher efficiency); in PFM mode, the switching frequency decreases with load to minimize switching losses; (5) Protection – cycle-by-cycle current limit (negative and positive); OVP turns on the low-side MOSFET to discharge the output if VOUT exceeds setpoint; thermal shutdown at approximately 165C; UVLO prevents operation below 3.65V input.

Pin Nombre Función
1 VIN Input supply (4V to 18V)
2 SW Switch node (connect to inductor)
3 GND Power ground (thermal pad)
4 BOOT Bootstrap capacitor for high-side gate drive
5 FB Output voltage feedback (resistor divider)
6 ES Enable / UVLO adjust
7 SS Soft-start / spread spectrum select
8 MODO Mode select (FPWM vs auto PFM/PWM)
9 FSEL Frequency select (5 options via resistor to GND)
10 PG Power-good output (open-drain)
11-14 VIN/GND Additional power/ground connections
  • FPGA core power: 12V to 0.9V/1.0V at 6A for high-end FPGA core rail
  • Industrial 24V to 5V/3.3V: point-of-load conversion from 12V or 24V bus
  • Embedded computing: 12V input to 1.8V DDR3 memory supply at 6A
  • Telecom board: 5V/12V intermediate bus to low-voltage processor rails
Fabricante Número de pieza Paquete Notas
TI TPS543320RPYR VQFN-12 3A version, similar family
TI TPS54520RPYR VQFN-14 5A version, 4.5-17V input
Monolithic Power MPQ4430GQBE-AEC1-Z QFN-16 3.5-36V/3A, automotive
TI TPS62933DRLR VQFN-6 3.8-30V/3A, smaller footprint
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