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TPS54040DGQR

42V 0.5A buck converter, 200mOhm FET, 100kHz-2.5MHz, 116uA IQ, MSOP-10 PowerPAD, Eco-Mode

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Pieza del fabricante：

TPS54040DGQR

Paquete：

HVSSOP-10 with PowerPAD (3.00 x 3.00 x 1.00 mm)

Marca：
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Compromiso de calidad
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Descripción

Productos

The TPS54040DGQR from Texas Instruments is a 42V input, 0.5A step-down DC/DC converter with integrated high-side MOSFET in an MSOP-10 PowerPAD package. Featuring current-mode control, 116µA IQ Eco-Mode, and adjustable switching frequency from 100kHz to 2.5MHz.

Especificaciones

Input Voltage 3.5 V to 42 V
Corriente de salida 0.5 A
Output Voltage 0.8 V to 39 V (adjustable)
High-Side FET 200 mΩ integrated
Switching Frequency 100 kHz to 2.5 MHz (adjustable)
Corriente de reposo 116 µA typical (operating)
Shutdown Current 1.3 µA typical
Control Mode Current mode
Duty Cycle (max) 98%
Reference Voltage 0.8 V
Características Eco-Mode, PWRGD, slow start, sync
Paquete MSOP-10 with PowerPAD
Temperatura de funcionamiento -40°C to +150°C

Características

  • 3.5V to 42V wide input range with integrated 200mΩ high-side MOSFET
  • 116µA operating quiescent current with pulse-skip Eco-Mode for light-load efficiency
  • 100kHz to 2.5MHz adjustable switching frequency with external clock synchronization
  • Adjustable slow start/sequencing and UV/OV power good output
  • Adjustable UVLO voltage and hysteresis via enable pin resistors
  • MSOP-10 PowerPAD package for excellent thermal performance

Aplicaciones

  • 12V and 24V industrial and commercial low-power buck regulation
  • Aftermarket auto accessories: video, GPS, entertainment systems
  • Wide-input-range distributed power supply point-of-load conversion

The TPS54040DGQR from Texas Instruments is a 42V, 0.5A step-down DC/DC converter with an integrated 200mOhm high-side N-channel MOSFET in a compact MSOP-10 PowerPAD package. The device uses current-mode control providing simple external compensation and flexible component selection. The wide 3.5V to 42V input voltage range supports operation from 12V, 24V, and 48V nominal supply rails. The adjustable switching frequency (100kHz to 2.5MHz) allows optimization of efficiency versus component size. At light loads, the pulse-skip Eco-Mode reduces operating quiescent current to 116uA. In shutdown, supply current drops to just 1.3uA. An open-drain power good output indicates when the output voltage is within 93% to 107% of nominal.

The TPS54040DGQR is a current-mode step-down (buck) DC/DC converter. The inner current loop controls peak inductor current cycle-by-cycle, while the outer voltage loop adjusts the current setpoint for output regulation. Current-mode control provides input voltage feed-forward, simplified compensation, and cycle-by-cycle current limiting. The integrated 200mOhm N-channel MOSFET switches the input voltage to the inductor during on-time. A bootstrap circuit provides gate drive voltage above VIN. At light loads, Eco-Mode enters pulse-skip mode for improved efficiency. An external resistor on RT/CLK sets the switching frequency or accepts an external clock for synchronization. The SS/TR pin capacitor sets the output voltage ramp time during startup.

Pin Nombre Función
1 BOOT Bootstrap capacitor (to PH)
2 VIN Input supply (3.5-42V)
3 ES Enable (float=on, low=off, UVLO adj)
4 SS/TR Slow start / tracking
5 RT/CLK Frequency set / external sync
6 PWRGD Power good output (open drain)
7 VSENSE Output voltage feedback (0.8V ref)
8 COMP Error amplifier output / compensation
9 GND Suelo
10 PH Switch node (to inductor)
  • 12V/24V industrial buck conversion to 5V or 3.3V at up to 0.5A in MSOP-10
  • Automotive aftermarket accessory power supply with wide input range
  • Low-power distributed point-of-load regulation with Eco-Mode standby
Fabricante Número de pieza Paquete Notas
TI TPS54060ADGQR MSOP-10 0.5A, 60V input
TI TPS54160ADGQR MSOP-10 1.5A, 60V input
TI TPS54040ADGQR MSOP-10 Improved enable threshold
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