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TPS543C20RVFT

40A stackable synchronous buck SWIFT converter, ACM, 3/0.9mΩ NexFET, 5x7mm LQFN-40

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Pieza del fabricante：

TPS543C20RVFT

Paquete：

40-LQFN-CLIP (5.0 × 7.0 × 0.9 mm, 0.5mm pitch)

Marca：
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Descripción

Productos

The TPS543C20RVFT is a 4V to 14V input, 40A synchronous step-down SWIFT converter from Texas Instruments, packaged in a 40-pin LQFN-CLIP (RVF) 5 × 7 mm package. It features internally compensated advanced current-mode control with adaptive internal compensation, integrated 3 mΩ/0.9 mΩ stacked NexFET power stage, and stackable architecture allowing two devices to deliver up to 80A with current sharing and clock synchronization.

Especificaciones

Función 40A Stackable Synchronous Buck SWIFT Converter
Input Voltage 4V to 14V
Output Voltage 0.6V to 5.5V (adjustable)
Corriente de salida 40A continuous (single), 80A (2x stacked)
Integrated FETs 3 mΩ (HS) / 0.9 mΩ (LS) stacked NexFET
Control Mode Advanced Current Mode (ACM) with adaptive compensation
Switching Frequency 300 kHz to 2 MHz (pin-strap programmable)
Reference Voltage 0.6V to 1.1V (pin-strap, 0.5% accuracy)
Stacking 2× for 80A with current/voltage share and CLK sync
Paquete 40-LQFN-CLIP (5 × 7 mm)
Temperatura de funcionamiento -40°C to +125°C (junction)

Características

  • Internally compensated advanced current mode control for easy design
  • Integrated 3 mΩ/0.9 mΩ stacked NexFET power stage with lossless current sensing
  • Stackable: two devices for 80A with current share, voltage share, and clock sync
  • Pin-strap programmable switching frequency and reference voltage
    • Asynchronous Pulse Injection (API) and body braking for improved transient performance
    • Differential remote voltage sensing for accurate output regulation

    Aplicaciones

    • Data center server CPU and GPU core power delivery
    • High-current FPGA and ASIC POL regulation
    • Storage controller and network processor power
    • Artificial intelligence accelerator power rails
    • Telecom blade server point-of-load conversion

The TPS543C20 is a 40A synchronous step-down converter employing internally compensated emulated peak-current-mode (ACM) control for EMI-sensitive point-of-load applications. The device integrates a 3 mΩ/0.9 mΩ stacked NexFET power stage with lossless low-side current sensing, delivering up to 40A in a compact 5 × 7 mm PowerStack package. Two TPS543C20 devices can be stacked together for up to 80A output with current sharing, voltage sharing, and clock synchronization. The internal integrator and directly amplifying ramp tracking loop eliminate the need for external compensation over a wide range of operating frequencies, simplifying system design. Optional API and body braking features improve transient performance by reducing undershoot and overshoot respectively.

The TPS543C20 uses an advanced current mode (ACM) control architecture with adaptive internal compensation. The inner current loop senses the inductor current through the low-side NexFET’s RDS(on) for lossless current sensing. The outer voltage loop compares the remotely sensed output voltage (via differential VSENSE pins) with the pin-strap programmable reference (0.6V to 1.1V) and drives the current loop through an internal integrator. The adaptive compensation network automatically adjusts its parameters based on the programmed switching frequency and output filter characteristics, eliminating the need for external compensation components. When stacking two devices, the master device drives the COMP signal to the slave, ensuring current sharing between phases. The API feature injects additional pulses during load step-up transients to reduce output voltage undershoot, while body braking shortens the body diode conduction time during step-down transients to minimize overshoot.

Pin Nombre Tipo Función
1-4 VIN Potencia Input supply (4-14V)
5-8 SW Salida Switch node — connect to inductor
9-12 PGND Potencia Power ground
13 BST Potencia Bootstrap — cap to SW
14 VCC Salida Internal 5V LDO output — bypass to GND
15 ES Entrada Enable — active high
16 PGOOD Salida Power good open-drain output
17 VSENSE+ Entrada Differential remote sense positive
18 VSENSE- Entrada Differential remote sense negative
19 COMP E/S Error amplifier output / stack share
20 SS Salida Soft start — external cap to GND
21 FSW1/FSW0 Entrada Frequency pin-strap programming
22 VSET1/VSET0 Entrada Reference voltage pin-strap programming
23 SYNC E/S Clock sync in/out for stacking
24 ILIM Entrada Current limit set resistor
25-30 AGND/PGND Potencia Analog and power ground
31-40 VIN/SW/PGND Potencia Additional power pins
EP Almohadilla térmica Potencia Exposed pad — connect to GND plane
  • 12V to 0.8V core power for 200W+ server CPU at 40A per phase
  • Stacked 80A GPU core power delivery with two TPS543C20 devices
  • AI accelerator VDD core rail requiring ultra-fast transient response
  • Network processor 12V-to-1.0V POL with differential remote sensing
  • Data center storage controller high-current DDR5 VDDQ regulation
Fabricante Número de pieza Paquete Notas
TI TPS545B20RVFT LQFN-40 25A variant, same family
Infineon XDPE15284 QFN-56 Digital 80A multi-phase controller
Renesas ISL69260 QFN-56 Digital 60A multi-phase PMBus
Monolithic Power MP87568 QFN-28 30A integrated buck
onsemi NCP53376 QFN-48 60A integrated power stage
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Garantía de calidad

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Envíos y pagos

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

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Contact Information

Email: info@ic-vendor.com

Tel / WhatsApp: +86 13760382860

Servicio y embalaje

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

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Electronic components are sensitive to static electricity, collision, moisture and dust. We adopt industry-standard anti-static packaging solutions to fully ensure the integrity of goods during transportation and storage.

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@ic-vendor.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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