UCD9244-EP Datasheet, PDF (1/44 Pages) Texas Instruments – UCD9244-EP Digital PWM System Controller with 4-Bit, 6-Bit, or 8-Bit VID Support

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UCD9244-EP
SLVSC86A – JANUARY 2014 – REVISED MARCH 2014
UCD9244-EP Digital PWM System Controller with 4-Bit, 6-Bit, or 8-Bit VID Support
1 Features
•1 Fully Configurable Four-Output Non-Isolated
DC/DC PWM Controller with support for
TMS320C6670™ and TMS320C6678™ DSP VID
interface
• Supports Switching Frequencies Up to 2MHz With
250 ps Duty-Cycle Resolution
• Up To 1mV Closed Loop Resolution
• Hardware-Accelerated, 3-Pole/3-Zero
Compensator with Non-Linear Gain for Improved
Transient Performance
• Supports Multiple Soft-Start and Soft-Stop
Configurations Including Prebias Start-up
• Supports Voltage Margining and Sequencing
• Sync In Terminal Aligns DPWM Clocks Between
Multiple UCD92xx Devices
• 12-Bit Digital Monitoring of Power Supply
Parameters Including:
– Input Current and Voltage
– Output Current and Voltage
– Temperature at Each Power Stage
– Auxiliary ADC Inputs
• Multiple Levels of Over-current Fault Protection:
– External Current Fault Inputs
– Analog Comparators Monitor Current Sense
Voltage
– Current Continually Digitally Monitored
• Over and Under-voltage Fault Protection
• Over-temperature Fault Protection
• Enhanced Nonvolatile Memory With Error
Correction Code (ECC)
• Device Operates From a Single Supply With an
Internal Regulator Controller That Allows
Operation Over a Wide Supply Voltage Range
• Supported by Fusion Digital Power™ Designer, a
Full Featured PC Based Design Tool to Simulate,
Configure, and Monitor Power Supply
Performance.
• Supports Defense, Aerospace, and Medical
Applications
– Controlled Baseline
– One Assembly and Test Site
– One Fabrication Site
– Available in Military (–55°C to 125°C)
Temperature Range
– Extended Product Life Cycle
– Extended Product-Change Notification
– Product Traceability
2 Applications
• Networking Equipment
• Telecommunications Equipment
• FPGA, DSP, and Memory Power
3 Description
The UCD9244 is a four-rail synchronous buck digital
PWM controller designed for non-isolated DC/DC
power applications. This device integrates dedicated
circuitry for DC/DC loop management with support for
up to four VID interfaces. Additionally, the UCD9244
has flash memory and a serial interface to support
configurability, monitoring and management.
Device Information
ORDER NUMBER
PACKAGE
BODY SIZE
UCD9244MRGCTEP QFN (64)
9mm × 9mm
Fusion Power Peripheral 4
EAp4
EAn4
Analog Front End
(AFE)
Compensator
3P/3Z IIR
Fusion Power Peripheral 3
EAp3
EAn3
Analog Front End
(AFE)
Compensator
3P/3Z IIR
Fusion Power Peripheral 2
EAp2
EAn2
Analog Front End
(AFE)
Compensator
3P/3Z IIR
EAp1
EAn1
Fusion Power Peripheral 1
Analog Front End
Compensator
Diff
Amp
Err
Ref
Amp
ADC
6 bit
IIR
3P/3Z
Coeff.
Regs
Digital
High Res
PWM
Digital
High Res
PWM
Digital
High Res
PWM
Digital
High Res
PWM
5
V33x
6
xGnd
BPCap
3.3V reg.
controller
& 1.8V
regulator
Addr0
Addr1
CS1A
CS2A
CS3A
CS4A
Temp1/ AuxADC1
Temp2/ AuxADC2
Temp3/ AuxADC3
Temp4/ AuxADC4
PMBus_Clk
PMBus_Data
PMBus_Alert
PMBus_Cntrl
nRESET
12-bit
ADC
260 ksps
PMBus
Analog Comparators
Ref 1
OC
DPWM1 ARM-7 core
Ref 2
Ref 3
OC
DPWM2
Flash
OC Memory with
DPWM3
ECC
Ref 4
Internal
Temp Sense
OC
DPWM4
Osc
POR/BOR
GPIO
VID
1-4
JTAG
DPWM4A
FLT 4A
DPWM3A
FLT 3A
DPWM2A
FLT 2A
DPWM1A
FLT 1A
SyncIn /JTAG_ TDI
PowerGood
VID1A
VID1B
VID1C
VID1S
VID2A
VID2B
VID2C
VID2S
VID3A
VID3B
VID3C
VID3S
VID4A/JTAG _TCK
VID4B/JTAG _TDO
VID4C/JTAG _TMS
VID4S
RCK
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.