0

10

20

30

40

50

60

70

80

90

100

0.01

0.1

1

10

Loading (A)

12V

24V

C020

Efficiency at V

= 5 V,

OUT

f

= 500 kHz

SW

TPS65286

SW_EN1

nFAULT2

SW_EN2

SW_OUT1

EN

SW_OUT2

SS

COMP

RLIM

AGND

VIN

+5V

SW_EN1

C10

C2

22

23

24

25

26

27

12

11

10

9

8

L1

MODE/

SYNC

14

28

RSET2

RSET1

FB

USB Data

USB Data

C8

C9

C3

R5

R7

nFAULT1

ENable

R8

13

R4

R3

R2

R5

C5

R6

FB

SW_EN2

C4

nFAULT2

C11

C7

FB

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

TPS65286

SLVSCG1 – MARCH 2014

TPS65286 Dual Power Distribution Switches With 4.5-V to 28-V Input Voltage,

6-A Output Current Synchronous Buck Regulator

1 Features

3 Description

1

•

Integrated Dual Power Distribution Switches:

6-A output current synchronous step down DCDC

–

2.5 V to 6 V Operating Input Voltage Range

converter, which is optimized for small designs

–

Integrated Back-to-Back Power MOSFETs

through high efficiency and integrating the high-side

With Typical 100-m

Ω On-Resistance

and

low-side

MOSFETs.

The

device

also

incorporates

dual

N-channel

MOSFET

power

–

Adjustable Current Limiting from 75 mA to

switches for power distribution systems. This device

2.7 A

provides a total power distribution solution, where

–

±6% Current-Limit Accuracy at 1.2 A (Typical)

precision current limiting and fast protection response

–

Latch-off Over Current Protection Versions

are required.

–

Reverse Input-Output Voltage Protection

A dual 100-m

Ω independent power distribution switch

limits the output current to a programmable current

–

Built-In Soft-Start

limit threshold between typical 50 mA~2.7 A by using

•

Integrated Buck DCDC Converter:

an external resistor. The current limit accuracy can be

–

4.5 V to 28 V Wide Input Voltage Range

achieved as tightly as ±6% at typical 1.2 A. The

–

Maximum Continuous 6-A Output Load

nFAULT output asserts low under over-current and

reverse-voltage conditions.

Current

–

Feedback Reference Voltage 0.6 V ±1%

Constant frequency peak current mode control in the

DCDC converter simplifies the compensation and

–

Fixed 500-kHz Switching Frequency

optimizes transient response. Cycle-by-cycle over-

–

Built-In Internal Soft-Start Time: 1 ms

current protection and operating in hiccup mode limit

–

Cycle-by-Cycle Current Limit

MOSFET power dissipation. When die temperature

exceeds thermal over loading threshold, the over

–

Adjustable Current Limit Threshold

temperature protection shuts down the device.

–

Output Over-Voltage Protection

–

External Clock Synchronization

Device Information

–

Over Temperature Protection

ORDER NUMBER

PACKAGE

BODY SIZE

TPS65286RHD

VQFN (28)

5 mm x 5 mm

2 Applications

•

USB Ports and USB Hubs

•

Digital TV

•

Computing Power

•

Laptop Dock

•

Car Infotainment

•

Monitoring

4 Simplified Schematic

Efficiency

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.