UCC39002

ACTIVE

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

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.

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Design & development

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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
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
Gerber file

Gerber Files for UCC39002 and UCC29002

SLUC019.ZIP (129 KB)
Package Pins CAD symbols, footprints & 3D models
PDIP (P) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian

Ordering & quality

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