TPS40130 Datasheet, PDF (1/33 Pages) Texas Instruments – TWO-PHASE, SYNCHRONOUS BUCK CONTROLLER WITH INTEGRATED MOSFET DRIVERS

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TPS40130
SLUS602 – JUNE 2004 – REVISED AUGUST 2004
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 Package
• Can Be Used with TPS40120 to Provide a 6-Bit
Digitally Controlled Output
APPLICATIONS
• Graphic Cards
• Internet Servers
• Networking Equipment
• Telecommunications Equipment
• DC Power Distributed Systems
LDRV1
VIN5
SW1
HDRV1
BOOT1
OVSET
VOUT
GSNS
DIFFO
CS1
CSRT1
COMP
VREF
DROOP
FB
DBT PACKAGE
(TOP VIEW)
1
30
2
29
3
28
4
27
5
26
6
25
7
24
8
23
9
22
10
21
11
20
12
19
13
18
14
17
15
16
PGND
LDRV2
SW2
HDRV2
BOOT2
SS
UVLO
BP5
AGND
CS2
CSRT2
RT
PGOOD
ILIM
EN/SYNC
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 con-
verter 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.
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, Texas Instruments Incorporated