NON-SYNCHRONOUS CONVERTER. TPS55386 Datasheet

TPS55386 CONVERTER. Datasheet pdf. Equivalent

TPS55386 Datasheet
Recommendation TPS55386 Datasheet
Part TPS55386
Description DUAL NON-SYNCHRONOUS CONVERTER
Feature TPS55386; TPS55383, TPS55386 www.ti.com ......................................................................
Manufacture etcTI
Datasheet
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Texas Instruments TPS55386
TPS55383, TPS55386
www.ti.com ......................................................................................................................................................................................... SLUS818 – SEPTEMBER 2008
3-A DUAL NON-SYNCHRONOUS CONVERTER WITH INTEGRATED HIGH-SIDE MOSFET
AND EXTERNAL COMPENSATION
FEATURES
1
23 4.5-V to 28-V Input Range
Output Voltage 0.8 V to 90% of Input Voltage
Output Current Up to 3 A
Two Fixed Switching Frequency Versions:
– TPS55383: 300 kHz
– TPS55386: 600 kHz
Three Selectable Levels of Overcurrent
Protection (Output 2)
0.8-V 1.75% Voltage Reference
2.1-ms Internal Soft Start
Dual PWM Outputs 180° Out-of-Phase
Ratiometric or Sequential Startup Modes
Configurable as Dual Output or Two-Channel
Single Output Multiphase for 6 amp Capability
85-mInternal High-Side MOSFETs
Current Mode Control with External
Compensation
Pulse-by-Pulse Overcurrent Protection
Thermal Shutdown Protection at +148°C
16-Pin PowerPAD™ HTSSOP package
APPLICATIONS
Set Top Box
Digital TV
Power for DSP
Consumer Electronics
CONTENTS
Device Ratings
Electrical Characteristics
Device Information
Application Information
Design Examples
Additional References
2
4
10
13
30
39
DESCRIPTION
The TPS55383 and TPS55386 are dual output,
non-synchronous buck converters capable of
supporting 3-A output applications that operate from a
4.5-V to 28-V input supply voltage, and require output
voltages between 0.8 V and 90% of the input voltage.
With an internally-determined operating frequency
and soft start time, these converters provide many
features with a minimum of external components. The
outputs of the two error amplifiers are accessible
allowing user optimization of the feedback loop under
a wide range of output filter characteristics.
Channel 1 overcurrent protection is set at 4.5 A, while
Channel 2 overcurrent protection level is selected by
connecting a pin to ground, to BP, or left floating. The
setting levels are used to allow for scaling of external
components for applications that do not need the full
load capability of both outputs.
The outputs may be enabled independently, or
configured to allow either ratiometric or sequential
startup sequencing. Additionally, the two outputs may
be powered from different sources.
VIN
OUTPUT1
TPS55383
1 PVDD1 PVDD2 16
2 BOOT1 BOOT2 15
3 SW1
SW2 14
4 GND
BP 13
5 EN1
SEQ 12
6 EN2
ILIM2 11
7 FB1
FB2 10
8 COMP1 COMP2 9
OUTPUT2
UDG-08045
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.
PowerPAD is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
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 © 2008, Texas Instruments Incorporated



Texas Instruments TPS55386
TPS55383, TPS55386
SLUS818 – SEPTEMBER 2008 ......................................................................................................................................................................................... www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ORDERING INFORMATION(1)
DEVICE NUMBER
TPS55383PWP
TPS55383PWPR
TPS55386PWP
TPS55386PWPR
OPERATING FREQUENCY (kHz)
300
600
PACKAGE
Plastic 16-Pin HTSSOP
MEDIA
Tube
Tape and Reel
Tube
Tape and Reel
UNITS (Pieces)
90
2000
90
2000
(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
DEVICE RATINGS
ABSOLUTE MAXIMUM RATINGS(1)
Input voltage range
Tstg
TJ
PVDD1, PVDD2, EN1, EN2
BOOT1, BOOT2
SW1, SW2
SW1, SW2 transient (< 50ns)
BP
SEQ, ILIM2
COMP1, COMP2
FB1, FB2
SW1, SW2 output current
BP load current
Storage temperature
Operating temperature
Soldering temperature
VALUE
30
VSW+ 7
–2 to 30
–3 to 31
6.5
–0.3 to 6.5
–0.3 to 3.5
–0.3 to 3
7
35
–55 to +165
–40 to +150
+260
UNIT
V
A
mA
°C
(1) Permanent device damage may occur if Absolute Maximum Ratings are exceeded. Functional operation should be limited to the
Recommended DC Operating Conditions detailed in this data sheet. Exposure to conditions beyond the operational limits for extended
periods of time may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
VPVDD2
TJ
Input voltage
Operating junction
temperature
MIN
MAX
UNIT
4.5 28
V
–40 +125
°C
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Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS55383 TPS55386



Texas Instruments TPS55386
TPS55383, TPS55386
www.ti.com ......................................................................................................................................................................................... SLUS818 – SEPTEMBER 2008
ELECTROSTATIC DISCHARGE (ESD) PROTECTION
Human body model
CDM
Machine Model
MIN UNIT
2k
1.5k V
250
PACKAGE DISSIPATION RATINGS(1)(2)(3)
PACKAGE
Plastic 16-Pin HTSSOP (PWP)
THERMAL IMPEDANCE
JUNCTION-TO-THERMAL
PAD (°C/W)
2.07 (4)
TA = +25°C
POWER RATING (W)
1.6
TA = +85°C
POWER RATING (W)
1.0
(1) For more information on the PWP package, refer to TI Technical Brief (SLMA002A).
(2) TI device packages are modeled and tested for thermal performance using printed circuit board designs outlined in JEDEC standards
JESD 51-3 and JESD 51-7.
(3) For application information, see the Power Derating section.
(4) TJ-A = +40°C/W.
Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS55383 TPS55386
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