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BUCK CONTROLLER. UCD9112 Datasheet

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BUCK CONTROLLER. UCD9112 Datasheet
















UCD9112 CONTROLLER. Datasheet pdf. Equivalent













Part

UCD9112

Description

DIGITAL DUAL PHASE SYNCHRONOUS BUCK CONTROLLER



Feature


UCD9112 DIGITAL DUAL PHASE SYNCHRONOUS B UCK CONTROLLER VER. 0.5 SEPTEMBER 2006 • FEATURES • Digital dual phase sy nchronous buck PWM controller with 175p s PWM resolution • Digital control wi th programmable PID compensation • Du al-phase with current balancing capabil ity • Vin from 4.5V to 14.5V (UCD7230 ) • Vout from 1% to 99% of Vin • Pr ogrammable switching frequency, .
Manufacture

Texas Instruments

Datasheet
Download UCD9112 Datasheet


Texas Instruments UCD9112

UCD9112; capable of up to 2MHz/Phase • Programm able soft start and soft stop • Suppo rts pre-biased start-up • Internally trimmed 0.5% 800mV Reference • Remote sensing differential amplifier • Pow er supply monitoring via PMBus • Sing le bias supply (3.3V VDD) • Graphical user interface configuration • Inter nal thermal sensor • PMBus Support Query Voltage, Current, Faults, etc .


Texas Instruments UCD9112

■ Voltage Setting and Calibration ■ Protection Threshold Adjustment • 32- Pin QFN Package • DESCRIPTION The UC D9112 is dual-phase synchronous buck di gital PWM controller that supports poin t of load (POL) applications. The devic e is configured thru the use of a graph ical user interface (GUI). The loop com pensator is configurable with the GUI t o meet dynamic converter p.


Texas Instruments UCD9112

erformance allowing a single hardware de sign to cover a broad range of POL appl ications. In addition to digital contro l loop, the UCD9112 is able to monitor and manage power supply operating condi tions and report the status to the host system through PMBus. The management p arameters are configurable through GUI. The GUI also allows the power supply d esigner to easily .





Part

UCD9112

Description

DIGITAL DUAL PHASE SYNCHRONOUS BUCK CONTROLLER



Feature


UCD9112 DIGITAL DUAL PHASE SYNCHRONOUS B UCK CONTROLLER VER. 0.5 SEPTEMBER 2006 • FEATURES • Digital dual phase sy nchronous buck PWM controller with 175p s PWM resolution • Digital control wi th programmable PID compensation • Du al-phase with current balancing capabil ity • Vin from 4.5V to 14.5V (UCD7230 ) • Vout from 1% to 99% of Vin • Pr ogrammable switching frequency, .
Manufacture

Texas Instruments

Datasheet
Download UCD9112 Datasheet




 UCD9112
UCD9112
DIGITAL DUAL PHASE SYNCHRONOUS BUCK CONTROLLER
VER. 0.5 SEPTEMBER 2006
FEATURES
Digital dual phase synchronous buck
PWM controller with 175ps PWM
resolution
Digital control with programmable PID
compensation
Dual-phase with current balancing
capability
Vin from 4.5V to 14.5V (UCD7230)
Vout from 1% to 99% of Vin
Programmable switching frequency,
capable of up to 2MHz/Phase
Programmable soft start and soft stop
Supports pre-biased start-up
Internally trimmed 0.5% 800mV
Reference
Remote sensing differential amplifier
Power supply monitoring via PMBus
Single bias supply (3.3V VDD)
Graphical user interface configuration
Internal thermal sensor
PMBus Support
Query Voltage, Current, Faults, etc
Voltage Setting and Calibration
Protection Threshold Adjustment
32-Pin QFN Package
DESCRIPTION
The UCD9112 is dual-phase synchronous buck
digital PWM controller that supports point of load
(POL) applications. The device is configured thru
the use of a graphical user interface (GUI). The loop
compensator is configurable with the GUI to meet
dynamic converter performance allowing a single
hardware design to cover a broad range of POL
applications.
In addition to digital control loop, the UCD9112 is
able to monitor and manage power supply operating
conditions and report the status to the host system
through PMBus. The management parameters are
configurable through GUI. The GUI also allows the
power supply designer to easily configure the digital
control loop characteristics and generate the gain
and phase information for analysis using bode plots.
To ensure balanced outputs on each phase, the
UCD9112 incorporates a current balancing scheme.
The PWM output of the dual phase controller is
capable of operating at a switching frequency of up
to 2MHz with a relative phase adjustment of 180o.
The UCD7230 synchronous buck driver has been
designed to work with the UCD9112 controller to
provide a highly integrated digital power solution. In
addition to 4A output drive capability, the driver
integrates current limit, short circuit protection as well
as under-voltage lockout protection. The UCD7230
also has a 3.3V, 10mA linear regulator that provides
the supply current for the controller.
APPLICATIONS
Networking Equipment
Servers
Storage Systems
Telecommunications Equipment
DC Power Distributed Systems
Industrial / ATE
ORDERING INFORMATION
PACKAGE
QFN
PRODUCT PREVIEW information concerns products in the
formative or design phase of development. Characteristic data
and other specifications are design goals. Texas Instruments
reserves the right to change or discontinue these products
without notice.
TAPE AND REEL QTY
250
www.ti.com
PART NUMBER
UCD9112RHB
Copyright © 2001, Texas Instruments Incorporated
1




 UCD9112
UCD9112
DIGITAL DUAL PHASE SYNCHRONOUS BUCK CONTROLLER
VER. 0.5 SEPTEMBER 2006
Table of Contents
6.2.9 Output Voltage Soft Stop
19
Features
6.2.10 Power Good (PGOOD)
20
1 Device Information
1.1 System Block Diagram
3
6.3 Protection Commands
20
4
6.3.1 Input Under Voltage Protection
20
1.2 Example Dual Phase Implementation 5
6.3.2 Input Over Voltage Protection
21
1.3 Pin Assignment
5
6.3.3 Output Over Voltage Protection
21
1.4 Pin Functions
5
6.3.4 Output Under Voltage Protection
22
2 Device Ratings
7
6.3.5 Output Over Current Protection
23
2.1 Absolute Maximum Ratings
7
6.3.6 Over Temperature Protection
23
2.2 Recommended Operating Conditions 7
6.4 Status & Fault Reporting Commands
24
2.3 Electronic Discharge (ESD) Protection 7
6.5 Non-Volatile Storage Commands
24
3 Electrical Characteristics
8
6.6 Host data Storage Commands
25
4 Typical Characteristics
11
7 Dual Phase Current Balancing
25
5 Function Overview
11
8 GUI
26
5.1 Reset
11
9 Package Information
29
5.1.1 Power-on Reset
11
5.1.2 Brown-out Reset
11
List of Figures
5.1.3 Watchdog
11
Figure 1-1 UCD9112 Block Diagram
3
5.1.4 External Reset
11
Figure 1-2. UCD9112 with the UCD7230
4
5.2 Analog Inputs
12
Figure 1-3. UCD9112 Pin Assignment
5
5.2.1 Resolution
12
Figure 3-1 PMBus Timing Diagram
10
5.2.2 Input Impedance
12
Figure 5-1 Vaddr to PMBus address translation 13
5.3 PMBus Address
13
Figure 5-2 Output voltage sensing circuitry
15
5.4 PID Compensator
14
Figure 6-1 Current Gain and Offset
18
5.5 Output Voltage Sensing
6 PMBus interface
15
Figure 8-1 GUI Interface for POL Configuration 27
16
Figure 9-1 32-Pin PowerPADTM QFN Package 29
6.1 PMBus Timing
16
6.2 Output Configuration Commands
16
List of Tables
6.2.1 Remote ON/OFF
16
Table 1-1 UCD9112 Pin Descriptions
5
6.2.2 Output Voltage Set Point
16
Table 5-1Device reset voltage threshold
11
6.2.3 Output Voltage Calibration
17
Table 5-2 Analog input assignments
12
6.2.4 Margin up/down
17
Table 5-4 Configuration of PMBus addresses 14
6.2.5 Output Current Measurement
17
Table 7-1 Current balancing of two phases
26
6.2.6 Start up into Pre-Bias
18
6.2.7 Output Voltage Sequencing
18
6.2.8 Output Voltage Soft Start
19
PRODUCT PREVIEW information concerns products in the
formative or design phase of development. Characteristic data
and other specifications are design goals. Texas Instruments
reserves the right to change or discontinue these products
without notice.
www.ti.com
Copyright © 2001, Texas Instruments Incorporated
2




 UCD9112
UCD9112
DIGITAL DUAL PHASE SYNCHRONOUS BUCK CONTROLLER
VER. 0.5 SEPTEMBER 2006
1 DEVICE INFORMATION
1.1 BLOCK DIAGRAM
Figure 1-1. UCD9112 Block Diagram
PRODUCT PREVIEW information concerns products in the
formative or design phase of development. Characteristic data
and other specifications are design goals. Texas Instruments
reserves the right to change or discontinue these products
without notice.
www.ti.com
Copyright © 2001, Texas Instruments Incorporated
3




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