TPS6287B25中文资料德州仪器数据手册PDF规格书

1 Features

• Input voltage range: 2.7V to 6V

• Family of pin-to-pin compatible devices: 10A, 15A,

20A, 25A, and 30A

• Three selectable output voltage ranges from 0.4V

to 1.675V

– 0.4V to 0.71875V with 1.25mV steps

– 0.4V to 1.0375V with 2.5mV steps

– 0.4V to 1.675V with 5mV steps

• Output voltage accuracy: ±0.8%

• Internal power MOSFETs: 2.6mΩ and 1.5mΩ

• Adjustable soft start

• External compensation

• Selectable start-up output voltage through the

VSET1 and VSET2 pins

– 0.4V to 0.775V with 25mV of steps

– 0.8V to 1.55V with 50mV of steps

• Selectable switching frequency of 1.5MHz,

2.25MHz, 2.5MHz, or 3MHz through FSEL pin only

for TPS6287BxxJE2 (see Table 4-2)

• Forced PWM or power save mode operation

• Start-up output voltage selection by external

resistor or I2C

• I2C-compatible interface with up to 3.4MHz

• Optional stacked operation for increased output

current capability

• Differential remote sense

• Thermal pre-warning and thermal shutdown

• Output discharge

• Optional spread spectrum clocking

• Power-good output with window comparator

2 Applications

• FPGA, ASIC and digital core supply

• Optical networks

• Storage

3 Description

The TPS6287B10, TPS6287B15, TPS6287B20,

TPS6287B25, and TPS6287B30 are a family of pinto-

pin, 10A, 15A, 20A, 25A, and 30A synchronous

step-down DC/DC converters with I2C interface and

differential remote sense. All devices offer high

efficiency and ease of use. Low-resistance power

switches allow up to 30A output current at high

ambient temperature. The devices can operate in

stacked mode to deliver higher output currents or to

spread the power dissipation across multiple devices.

The TPS6287Bx family implements an enhanced

DCS-control scheme that combines fast transient

response with fixed-frequency operation. Devices can

operate in power save mode for maximum efficiency,

or forced-PWM mode for best transient performance

and lowest output voltage ripple.

An optional remote sensing feature maximizes voltage

regulation at the point-of-load, and the device

achieves ±0.8% DC voltage accuracy for the full

output voltage range.

The I2C compatible interface offers several control,

monitoring and warning features, such as voltage

monitoring and temperature related warnings. The

output voltage can be quickly adjusted to adapt the

load´s power consumption to the performance needs.

The default start-up voltage is resistor selectable

through the VSET1 and VSET2 pins.