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Gate Drivers. UCD7230 Datasheet

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Gate Drivers. UCD7230 Datasheet
















UCD7230 Drivers. Datasheet pdf. Equivalent













Part

UCD7230

Description

Digital Control Compatible Synchronous Buck Gate Drivers



Feature


UCD7230 www.ti.com SLUS741D – NOVEMB ER 2006 – REVISED JANUARY 2010 Digit al Control Compatible Synchronous Buck Gate Drivers with Current Sense Condit ioning Amplifier Check for Samples: UC D7230 FEATURES 1 •2 Input from Digit al Controller Sets Operating Frequency and Duty Cycle • Up to 2-MHz Switchin g Frequency • Dual Current Limit Prot ection with Independently Ad.
Manufacture

Texas Instruments

Datasheet
Download UCD7230 Datasheet


Texas Instruments UCD7230

UCD7230; justable Thresholds • Fast Current Sen se Circuit with Adjustable Blanking Int erval Prevents Catastrophic Current Lev els • Digital Output Current Limit Fl ag • Low Offset, Gain of 48, Differen tial Current Sense Amplifier • 3.3-V, 10-mA Internal Regulator • Dual True Drive™ High-Current Drivers • 10-ns Typical Rise/Fall Times with 2.2-nF Lo ads • 4.5-V to 15.5-V Supply Vol.


Texas Instruments UCD7230

tage Range APPLICATIONS • Digitally-C ontrolled Synchronous-Buck Power Stages for Single and Multi-Phase Application s • Especially Suited for Use with UC D91xx or UCD95xx Contollers • High-Cu rrent Multi-Phase VRM/EVRD Regulators f or Desktop, Server, Telecom and Noteboo k Processors • Digitally-Controlled S ynchronous-Buck Power Supplies Using mC s or the TMS320TM DSP Fami.


Texas Instruments UCD7230

ly DESCRIPTION The UCD7230 is part of th e UCD7K family of digital control compa tible drivers for applications utilizin g digital control techniques or applica tions requiring fast local peak current limit protection. VIN VOUT BIAS I M AX CLF VDD CS BIAS CS+ BST OUT1 S W PVDD OUT2 PGND + IO UVLO IDLY 3V 3 AGND 3V3 REG Enable Blank Drive an d Dead-Time Contro.





Part

UCD7230

Description

Digital Control Compatible Synchronous Buck Gate Drivers



Feature


UCD7230 www.ti.com SLUS741D – NOVEMB ER 2006 – REVISED JANUARY 2010 Digit al Control Compatible Synchronous Buck Gate Drivers with Current Sense Condit ioning Amplifier Check for Samples: UC D7230 FEATURES 1 •2 Input from Digit al Controller Sets Operating Frequency and Duty Cycle • Up to 2-MHz Switchin g Frequency • Dual Current Limit Prot ection with Independently Ad.
Manufacture

Texas Instruments

Datasheet
Download UCD7230 Datasheet




 UCD7230
UCD7230
www.ti.com
SLUS741D – NOVEMBER 2006 – REVISED JANUARY 2010
Digital Control Compatible Synchronous Buck Gate Drivers with Current Sense
Conditioning Amplifier
Check for Samples: UCD7230
FEATURES
1
2 Input from Digital Controller Sets Operating
Frequency and Duty Cycle
• Up to 2-MHz Switching Frequency
• Dual Current Limit Protection with
Independently Adjustable Thresholds
• Fast Current Sense Circuit with Adjustable
Blanking Interval Prevents Catastrophic
Current Levels
• Digital Output Current Limit Flag
• Low Offset, Gain of 48, Differential Current
Sense Amplifier
• 3.3-V, 10-mA Internal Regulator
• Dual TrueDrive™ High-Current Drivers
• 10-ns Typical Rise/Fall Times with 2.2-nF
Loads
• 4.5-V to 15.5-V Supply Voltage Range
APPLICATIONS
• Digitally-Controlled Synchronous-Buck Power
Stages for Single and Multi-Phase
Applications
• Especially Suited for Use with UCD91xx or
UCD95xx Contollers
• High-Current Multi-Phase VRM/EVRD
Regulators for Desktop, Server, Telecom and
Notebook Processors
• Digitally-Controlled Synchronous-Buck Power
Supplies Using mCs or the TMS320TM DSP
Family
DESCRIPTION
The UCD7230 is part of the UCD7K family of digital
control compatible drivers for applications utilizing
digital control techniques or applications requiring fast
local peak current limit protection.
VIN
VOUT
BIAS
I MAX
CLF
VDD
CS
BIAS
CS+
BST
OUT1
SW
PVDD OUT2 PGND
+
IO
UVLO
IDLY
3V3
AGND
3V3
REG
Enable
Blank
Drive and Dead-Time
ControlLogic
(D;1-D)
Over
Curre nt
ILIM
Curre nt
Limit Logic
CLF
UCD7230
48x
+ 0.6 V
POS
NEG
ILIM /10
+
AO
IN
SRE
IDLY
DLY
ILOAD
PWM
SRE
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
TrueDrive, PowerPAD are trademarks of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006–2010, Texas Instruments Incorporated




 UCD7230
UCD7230
SLUS741D – NOVEMBER 2006 – REVISED JANUARY 2010
www.ti.com
The UCD7230 is a MOSFET gate driver specifically designed for synchronous buck applications. It is ideally
suited to provide the bridge between digital controllers such as the UCD91xx or the UCD95xx and the power
stage. With cycle-by-cycle current limit protection, the UCD7230 device protects the power stage from faulty
input signals or excessive load currents.
The UCD7230 includes high-side and low-side gate drivers which utilize Texas Instrument’s TrueDrive™ output
architecture. This architecture delivers rated current into the gate capacitance of a MOSFET during the Miller
plateau region of the switching. Furthermore, the UCD7230 offers a low offset differential amplifier with a fixed
gain of 48. This amplifier greatly simplifies the task of conditioning small current sense signals inherent in high
efficiency buck converters.
The UCD7230 includes a 3.3-V, 10-mA linear regulator to provide power to digital controllers such as the
UCD91xx. The UCD7230 is compatible with standard 3.3-V I/O ports of the UCD91xx, the TMS320TM family
DSPs, mCs, or ASICs.
The UCD7230 is offered in PowerPAD™ HTSSOP or space-saving QFN packages. Package pin out has been
carefully designed for optimal board layout
VIN
VOUT
GSENSE
COMMUNICATION
(Programming&
StatusReporting)
SIMPLIFIED APPLICATION DIAGRAMS
UCD9112
RB0
ADC3
DPWMA0
AD33
AVSS
VD25
DPWMB0
EAP
RB1/TMRI1
EAM
ADC2
RST
2
2
2
UCD7230
1 VDD
CS+ 20
2 SRE CSBIAS 19
3 IN
SW 18
4 3V3
5 AGND
6 DLY
OUT1 17
BST 16
PVDD 15
7 ILIM
8 CLF
9 I0
10 A0
OUT2 14
PGND 13
NEG 12
POS 11
2
RNEG
RPOS
1
VOUT
GSENSE
1
Figure 1. Single-Phase Synchronous Buck Converter using UCD9112 and one UCD7230
2
Copyright © 2006–2010, Texas Instruments Incorporated
Product Folder Link(s): UCD7230




 UCD7230
www.ti.com
VIN
VOUT
GSENSE
COMMUNICATION
(Programming &
Status Reporting)
UCD7230
SLUS741D – NOVEMBER 2006 – REVISED JANUARY 2010
UCD9112
RB0
ADC3
DPWMA0
AD33
AVSS
VD25
DPWMB0
EAP
RB1/TMRI1
EAM
ADC2
RST
DPWMA1
DPWMB1
RB3/TMRI0
ADC5
RB0
2
2
UCD7230
1 VDD
CS+ 20
2 SRE CSBIAS 19
3 IN
18
SW
4 3V3
5 AGND
6 DLY
OUT1 17
BST 16
PVDD 15
7 ILIM
8 CLF
9 I0
10 A0
OUT2 14
PGND 13
NEG 12
POS 11
2
RNEG1
UCD7230
1 VDD
CS+ 20
2
RB0
2 SRE CSBIAS 19
3 IN
2
SW 18
4 3V3
OUT1 17
5 AGND
BST 16
2
6 DLY
PVDD 15
7 ILIM
8 CLF
9 I0
10 A0
OUT2 14
PGND 13
NEG 12
POS 11
RNEG2
RPOS1
1
RPOS2
1
VOUT
GSENSE
1
2
Figure 2. Multi-Phase Synchronous Buck Converter using UCD9112 and two UCD7230
Copyright © 2006–2010, Texas Instruments Incorporated
3
Product Folder Link(s): UCD7230




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