Home Power management AC/DC & DC/DC controllers (external FET)
Home
Power management
AC/DC & DC/DC controllers (external FET)

UCC39002

ACTIVE

Advanced 8 pin load share controller, 0°C to 70°C

Order now
Data sheet

UCC39002

ACTIVE
Data sheet Order now

Product details

Vin (max) (V) 14.25 Operating temperature range (°C) 0 to 70 Control mode Current Topology Buck, Flyback Rating Catalog Features 1% accuracy, Intel SSI load share specification compliant, Load Sharing, high-side or Low-side current sense
Vin (max) (V) 14.25 Operating temperature range (°C) 0 to 70 Control mode Current Topology Buck, Flyback Rating Catalog Features 1% accuracy, Intel SSI load share specification compliant, Load Sharing, high-side or Low-side current sense
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • High accuracy; capable of < 1% current-share error at full load
  • High-side or low-side (GND-referenced) current-sense capability
  • Ultra-low offset current-sense amplifier
  • Single-wire load-share bus
  • Full scale adjustability
  • Intel SSI load-share specification compliant
  • Disconnect from load-share bus at stand-by
  • Load-share bus protection against shorts to GND or to the supply rail
  • 8-pin VSSOP package minimizes space
  • Lead-free assembly
  • High accuracy; capable of < 1% current-share error at full load
  • High-side or low-side (GND-referenced) current-sense capability
  • Ultra-low offset current-sense amplifier
  • Single-wire load-share bus
  • Full scale adjustability
  • Intel SSI load-share specification compliant
  • Disconnect from load-share bus at stand-by
  • Load-share bus protection against shorts to GND or to the supply rail
  • 8-pin VSSOP package minimizes space
  • Lead-free assembly

The UCC29002 device family comprises advanced, high-performance, low-cost load-share controllers that provide all necessary functions to parallel multiple independent power supplies or DC-to-DC modules. Targeted for high-reliability applications in server, workstation, telecom, and other distributed power systems, the controller is suitable for N+1 redundant systems or high-current applications where off-the-shelf power supplies must be paralleled.

The BiCMOS UCC29002 is based on the automatic leader/follower architecture of predecessor UC3902 and UC3907 load-share controllers. The device is capable of better than 1% current-share error between modules at full load by using a very-low offset post-package-trimmed current-sense amplifier and a high-gain negative-feedback loop. With an amplifier common-mode range of 0V to the VDD supply rail, the current-sense resistor, RSHUNT, can be placed in either the GND return path or in the positive output rail of the power supply.

The UCC29002 device family comprises advanced, high-performance, low-cost load-share controllers that provide all necessary functions to parallel multiple independent power supplies or DC-to-DC modules. Targeted for high-reliability applications in server, workstation, telecom, and other distributed power systems, the controller is suitable for N+1 redundant systems or high-current applications where off-the-shelf power supplies must be paralleled.

The BiCMOS UCC29002 is based on the automatic leader/follower architecture of predecessor UC3902 and UC3907 load-share controllers. The device is capable of better than 1% current-share error between modules at full load by using a very-low offset post-package-trimmed current-sense amplifier and a high-gain negative-feedback loop. With an amplifier common-mode range of 0V to the VDD supply rail, the current-sense resistor, RSHUNT, can be placed in either the GND return path or in the positive output rail of the power supply.
filter Find other AC/DC & DC/DC controllers (external FET)
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 14
Type Title Date
* Data sheet UCC29002 and UCC39002 Advanced 8-Pin Load-Share Controller datasheet (Rev. J) PDF | HTML 04 Apr 2017
More literature Design review of a 2-kW parallelable power supply module 17 Aug 2016
More literature Design review of a 2-kW parallelable power supply module (PPT) 17 Aug 2016
Application note Synchronizing Three or More UCC28950 Phase-Shifted, Full-Bridge Controllers 13 Sep 2011
Application note Pre-biased Output Voltage Startup Operation of the UCC28950 01 Aug 2011
Application note Current Sharing in Redundant Systems 08 Jan 2010
User guide Using The UCC39002 With 3 PT4484 Modules (PR042 (Rev. B) 29 Jul 2009
Application note Load-Sharing TPS40050 Modules Using the UCC39002 Load-Share Controller 13 Apr 2004
User guide UCC39002 Advanced Load-Share Controller User's Guide, HPA027A (Rev. A) 09 Feb 2004
More literature 2003 Power Seminar - Paralleling Power 14 Jul 2003
Application note 48-VIN, 12-VOUT Loadshare System Using the UCC39002 with Three DC-DC Modules (Rev. A) 14 Feb 2003
Application note U-163 The UC3902 Load Share Controller and its Performance in Distributed Power (Rev. A) 13 Dec 2002
More literature Seminar 800 Topic 2 - Load Sharing With Paralleled Power Supplies 15 Feb 2001
Application note U-129 UC3907 Load Share IC Simplifies Parallel Power Supply Design 05 Sep 1999

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

UCC39002EVM — UCC39002 Evaluation Module

The UCC39002 is an advanced, high-performance load-share controller that provides all the necessary functions to parallel multiple independent power supplies or dc-to-dc modules. This load-share circuit is based upon the automatic master/slave architecture utilized in the UC3902 and UC3907 (...)

User guide: PDF
Not available on TI.com
Calculation tool

SLUC045 — MathCAD 2000 for Designing with UCC29002 Load Share Controller

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC controllers (external FET)
UCC29002 — Advanced 8 pin load share controller, -40°C to 105°C UCC39002 — Advanced 8 pin load share controller, 0°C to 70°C
Download
Calculation tool

SLUC684 — UCCX9002 Design Calculator -- Excel

Excel-based design calculator for load-share IC family UCCX9002
Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC controllers (external FET)
UCC29002 — Advanced 8 pin load share controller, -40°C to 105°C UCC39002 — Advanced 8 pin load share controller, 0°C to 70°C
Download
Gerber file

Gerber Files for UCC39002 and UCC29002

SLUC019.ZIP (129 KB)
Download
Package Pins CAD symbols, footprints & 3D models
PDIP (P) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos