PGND

PGND

0.1µF

C3

0.01µF

C5

100µF

C6

PGND

10.0k

R4

PWRGD

4.7µF

C2

AGND

1.5µH

L1

10µF

C1

1.0k

R1

1.0k

R2

C4

EN

1

SDA

2

SCL

3

A1

4

A0

5

VIN

6

PVIN

7

PVIN

8

PGND

9

PGND

10

11

12

13

14

SW

15

SW

16

SW

17

VBST

18

PGOOD

19

VREG5

20

GND

SS

VOUT

VFB

U1

TPS56520

AGND

1.0k

R3

18.2k

R5

22k

R6

PGND

3.3 V

VOUT

VIN

2.2µF

TPS56720

TPS56920

SDA

SCL

A1

A0

SDA

SCL

A1

A0

µProcessor

VIN

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

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.

TPS56C20, TPS56920, TPS56720, TPS56520

SLVSCB6D – NOVEMBER 2013 – REVISED FEBRUARY 2016

TPS56x20 4.5V to 17V Input, 12A/9A/7A/5A Output, Synchronous Step-Down Voltage

Regulator with Voltage Scaling

1

1 Features

1

•

D-CAP2™ Control

–

Input Voltage Range: 4.5V to 17V

–

Switching Frequency: 500kHz

–

Optimized for a 1.0µH to 2.2µH Inductor

•

±1% Output Voltage Accuracy

•

–

Output Voltage (VID): 0.6V to 1.87V in 10mV

–

Auto-Skip Eco-mode™ ON/OFF (Light-load)

–

Current Limit Target: 40% to 160%

–

Enabling IC, Reading-back Power-good

–

Hiccup Mode Protection ON/OFF

•

IC Terminal Features

–

Start-up by Using External Resistors

Output Voltage with VFB Pin: 0.6V to 1.87V

–

Adjustable Soft-start,

Monotonic Pre-Biased Start-up

–

Power-good

–

•

Cycle-by-Cycle Overcurrent Limiting Control

•

Thermal Shutdown (TSD)

•

Undervoltage Lockout (UVLO)

•

TSSOP Package (PWP) with PowerPAD™

2 Applications

•

Media Processors for Consumer Applications:

Digital TVs, Set Top Boxes (STB, DVD/Blu-ray

Player, Cable/Satellite Modem)

•

SoC Processors

•

High Density Power Distribution Systems

3 Description

The TPS56X20 is a synchronous DC-DC converter IC

(integrated circuit) with a voltage scaling control to

power up micro-processors (MCUs) requiring core

the output voltage can be programmed/scaled by VID

This step-down (buck) converter employs an adaptive

on-time D-CAP2 mode control which provides a very

fast transient response with no external components.

Unlike traditional voltage-/current-mode controls, the

D-CAP2 supports seamless transition between PWM

mode for higher load and Eco-mode™ for light load.

Eco-mode maintains high efficiency in light-load.

Device Information

PART NUMBER

PACKAGE

BODY SIZE

TPS56C20

HTSSOP (24)

7.80 mm × 4.40 mm

TPS56920

HTSSOP (20)

6.50 mm × 4.40 mm

TPS56720

TPS56520

Typical Application Circuit