The UCCx8C5x family of devices are high-performance current-mode PWM controllers that can drive both Si and SiC MOSFETs in various applications. The UCCx8C5x family is a more efficient and robust version of the UCCx8C4x.
The UCCx8C5x family has new UVLO thresholds that allow for reliable SiC MOSFET operation (UCC28C56-59), in addition to existing UVLO thresholds for continued Si MOSFET support (UCCx8C50-55).
VDD absolute maximum voltage rating is extended from 20 V to 30 V for optimally driving the gate of 20-Vgs, 18-Vgs, or 15-Vgs SiC MOSFETs, while also allowing for the exclusion of an external LDO.
PARAMETER | UCCx8C4x | UCCx8C5x |
---|---|---|
Supply current at 52 kHz | 2.3 mA | 1.3 mA |
Startup current (max) | 100 µA | 75 µA |
VDD abs max | 20 V | 30 V |
Reference Voltage Accuracy | ±2% | ±1% |
UVLO and DMAX for Si FET | 6 options | 6 options |
UVLO and DMAX for SiC FET | none | 6 options |
Smallest package option | VSSOP (8) | VSSOP (8) |
The UCCx8C5x family is offered in 8-pin VSSOP (DGK), and 8-pin SOIC (D) packages.
PART NUMBER | PACKAGE(1) | BODY SIZE (NOM) |
---|---|---|
UCC28C50, UCC28C51 UCC28C52, UCC28C53, UCC28C54, UCC28C55, UCC38C50, UCC38C51 UCC38C52, UCC38C53 UCC38C54, UCC38C55 | SOIC (8) | 3.91 mm × 4.90 mm |
VSSOP (8) | 3.00 mm × 3.00 mm | |
UCC28C56H, UCC28C56L UCC28C57H, UCC28C57L, UCC28C58, UCC28C59 | SOIC (8) | 3.91 mm × 4.90 mm |
Changes from Revision B (February 2023) to Revision C (March 2023)
UVLO | Junction Temperature (TJ) (°C) | Maximum duty cycle | ||
---|---|---|---|---|
Turn on at 14.5 V Turn off at 9 V for off-line applications | Turn on at 8.4 V Turn off at 7.6 V for dc/dc applications | Turn on at 7 V Turn off at 6.6 V for battery applications | ||
UCC28C52 | UCC28C53 | UCC28C50 | –40 to 125 | 100% |
UCC38C52 | UCC38C53 | UCC38C50 | 0 to 85 | |
UCC28C54 | UCC28C55 | UCC28C51 | –40 to 125 | 50% |
UCC38C54 | UCC38C55 | UCC38C51 | 0 to 85 |
UVLO | Junction Temperature (TJ) (°C) | Maximum duty cycle | ||
---|---|---|---|---|
Turn on at 18.8 V Turn off at 15.5 V Suitable for HV applications using GEN-I SiC MOSFET | Turn on at 18.8 V Turn off at 14.5 V Suitable for HV applications using GEN-II SiC MOSFET | Turn on at 16 V Turn off at 12.5 V Suitable for HV applications using GEN-III SiC MOSFET | ||
UCC28C56H | UCC28C56L | UCC28C58 | –40 to 125 | 100% |
UCC28C57H | UCC28C57L | UCC28C59 | –40 to 125 | 50% |