TPS40130DBTR Datasheet, PDF (1/39 Pages) Texas Instruments – TWO-PHASE, SYNCHRONOUS BUCK CONTROLLER WITH INTEGRATED MOSFET DRIVERS

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TPS40130
SLUS602B – JUNE 2004 – REVISED SEPTEMBER 2005
TWO-PHASE, SYNCHRONOUS BUCK CONTROLLER WITH INTEGRATED MOSFET
DRIVERS
FEATURES
• Two-Phase Interleaved Operation
• 3-V to 40-V Power Stage Operation Range
• Supports Up to 6-V V_OUT With External Divider
• Requires VIN5 @ 50 mA, Typical, Depending
on External MOSFETs and Switching
Frequency
• 1-µA Shutdown Current
• Programmable Switching Frequency up to 1
MHz/Phase
• Current Mode Control with Forced Current
Sharing
• Better than 1% Internal 0.7-V Reference
• Resistive Divider Sets Direct Output Over
Voltage Threshold and Sets Input
Undervoltage Lockout
• True Remote Sensing Differential Amplifier
• Resistive or Inductor’s DCR Current Sensing
• 30-pin TSSOP or 32-Pin QFN Packages
• Can Be Used with TPS40120 to Provide a 6-Bit
Digitally Controlled Output
DBT PACKAGE
(TOP VIEW)
APPLICATIONS
• Graphic Cards
• Internet Servers
• Networking Equipment
• Telecommunications Equipment
• DC Power Distributed Systems
DESCRIPTION
The TPS40130 is a two-phase synchronous buck
controller that is optimized for low-output voltage,
high-output current applications powered from a
supply between 3 V and 40 V. A multi-phase
converter offers several advantages over a single
power stage including lower current ripple on the
input and output capacitors, faster transient response
to load steps, improved power handling capabilities,
and higher system efficiency.
Each phase can be operated at a switching
frequency up to 1 MHz, resulting in an effective
ripple frequency of up to 2 MHz at the input and the
output. The two phases operates 180 degrees
out-of-phase.
RHB PACKAGE
(TOP VIEW)
LDRV1
1
VIN5
2
SW1
3
HDRV1
4
BOOT1
5
OVSET
6
VOUT
7
GSNS
8
DIFFO
9
CS1
10
CSRT1
11
COMP
12
VREF
13
DROOP
14
FB
15
30
PGND
29
LDRV2
28
SW2
27
HDRV2
26
BOOT2
25
SS
24
UVLO
23
BP5
BOOT1
OVSET
VOUT
GSNS
32 31 30 29 28 27 26 25
1
24
2
23
3
22
4
21
NC
BOOT2
SS
UVLO
22
AGND
21
CS2
20
CSRT2
19
RT
18
PGOOD
17
ILIM
DIFFO
CS1
CSRT1
NC
5
20
6
19
7
18
89
10
11
12 13
14
15
17
16
BP5
AGND
CS2
CSRT2
16
EN/SYNC
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.
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 © 2004–2005, Texas Instruments Incorporated