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TPS56C20 Datasheet Preview

TPS56C20 Datasheet

Synchronous Step-Down Voltage Regulator

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TPS56C20, TPS56920, TPS56720, TPS56520
SLVSCB6E – NOVEMBER 2013 – REVISED DECEMBER 2017
TPS56x20 4.5V to 17V Input, 12A/9A/7A/5A Output, Synchronous Step-Down Voltage
Regulator with Voltage Scaling
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
• Features via I2C Compatible Interface
– 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
– I2C Address Programming (2bits)
• 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
voltage (VCORE) tune-ups. After the initial power-up,
the output voltage can be programmed/scaled by VID
codes sent over an I2C compatible bus.
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.
PART NUMBER
TPS56C20
TPS56920
TPS56720
TPS56520
Device Information
PACKAGE
BODY SIZE
HTSSOP (24)
7.80 mm × 4.40 mm
HTSSOP (20)
6.50 mm × 4.40 mm
Typical Application Circuit
3.3 V
R1 R2 R3
1.0kΩ 1.0kΩ 1.0kΩ
U1
TPS56520
TPS56720
TPS56920
1
EN
VFB
VIN SDA
2
SDA
VOUT
µProcessor SCL
3
A1 4
SCL
A1
SS
GND
A0 5
A0
VREG5
6
VIN
PGOOD
7
VIN
PVIN
VBST
C1
10µF
C2
4.7µF
8
PVIN
9
PGND
SW
SW
10
PGND
SW
PGND
AGND
20
19
18
17
16
15
14
13
11
12
PGND
PGND
R4
10.0k
PWRGD
R5
18.2kΩ
C4
2.2µF
C5
0.01µF
R6
22kΩ
C3
0.1µF
L1
AGND
1.5µH
VOUT
C6
100µF
PGND
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.




etcTI

TPS56C20 Datasheet Preview

TPS56C20 Datasheet

Synchronous Step-Down Voltage Regulator

No Preview Available !

TPS56C20, TPS56920, TPS56720, TPS56520
SLVSCB6E – NOVEMBER 2013 – REVISED DECEMBER 2017
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (Continued) ........................................ 3
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 6
7.1 Absolute Maximum Ratings ...................................... 6
7.2 ESD Ratings.............................................................. 6
7.3 Recommended Operating Conditions....................... 6
7.4 Thermal Information ................................................. 7
7.5 Electrical Characteristics........................................... 7
7.6 Timing Requirements ................................................ 9
7.7 Switching Characteristics .......................................... 9
7.8 Typical Characteristics ............................................ 10
8 Detailed Description ............................................ 15
8.1 Overview ................................................................. 15
8.2 Functional Block Diagram ....................................... 15
8.3 Feature Description................................................. 16
8.4 Device Functional Modes........................................ 18
8.5 Programming........................................................... 18
8.6 Register Maps ......................................................... 20
9 Applications and Implementation ...................... 24
9.1 Application Information............................................ 24
9.2 Typical Application .................................................. 24
10 Power Supply Recommendations ..................... 32
11 Layout................................................................... 32
11.1 Layout Guidelines ................................................. 32
11.2 Layout Example .................................................... 33
12 Device and Documentation Support ................. 34
12.1 Device Support...................................................... 34
12.2 Documentation Support ....................................... 34
12.3 Related Links ........................................................ 34
12.4 Trademarks ........................................................... 34
12.5 Electrostatic Discharge Caution ............................ 34
12.6 Glossary ................................................................ 34
13 Mechanical, Packaging, and Orderable
Information ........................................................... 34
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision D (February 2016) to Revision E
Page
• Changed TJ MAX from 125°C to 150°C in Absolute Maximum Ratings ................................................................................ 6
Changes from Revision C (July 2014) to Revision D
Page
• Deleted SWIFT™ From the datasheet title ........................................................................................................................... 1
• Moved the Storage Temperature to the Absolute Maximum Ratings ................................................................................... 6
• Changed Handling Ratings To: ESD Ratings ........................................................................................................................ 6
Changes from Revision B (March 2014) to Revision C
Page
• Changed Figure 57 image for clarification. .......................................................................................................................... 33
Changes from Revision A (January 2014) to Revision B
Page
• Changed to new data sheet format. ...................................................................................................................................... 1
• Added Device Information table ............................................................................................................................................ 1
• Added Table of Contents and moved Revision History to page 2. ....................................................................................... 2
• Moved Abs Max Ratings, Handling Ratings, Recommended Operating Conditions, Thermal Info, and Elec
Characteristics tables to the "Specifications" section ............................................................................................................ 6
Changes from Original (November 2013) to Revision A
Page
• Changed data sheet title to include "SWIFTTM Voltage Regulator..." .................................................................................... 1
2 Submit Documentation Feedback
Copyright © 2013–2017, Texas Instruments Incorporated
Product Folder Links: TPS56C20 TPS56920 TPS56720 TPS56520


Part Number TPS56C20
Description Synchronous Step-Down Voltage Regulator
Maker etcTI
Total Page 30 Pages
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