UCC38C50 Series

Commercial, 30-V, low-power current-mode PWM controller, 7-V/6.6-V UVLO, 100% duty cycle

Catalog

Commercial, 30-V, low-power current-mode PWM controller, 7-V/6.6-V UVLO, 100% duty cycle

Part	Output Phases	Supplier Device Package	Clock Sync	Operating Temperature [Min]	Operating Temperature [Max]	Function	Mounting Type	Voltage - Supply (Vcc/Vdd)	Frequency - Switching	Output Type	Control Features	Duty Cycle (Max) [Max]	Output Configuration	Package / Case	Package / Case [y]	Package / Case [x]	Synchronous Rectifier	Number of Outputs
Texas Instruments UCC38C50DR	1	8-SOIC		0 °C	85 °C	Step-Down Step-Up Step-Up/Step-Down	Surface Mount	30 V	1 MHz	Transistor Driver	Current Limit Dead Time Control Enable Frequency Control Soft Start	100 %	Positive	8-SOIC	3.9 mm	0.154 in		1

Catalog

Commercial, 30-V, low-power current-mode PWM controller, 7-V/6.6-V UVLO, 100% duty cycle

Key Features

• Undervoltage lockout options to support both Si and SiC MOSFET applications30-V VDD absolute maximum voltage1-MHz maximum fixed frequency operation50-µA startup current, 75-µA maximumLow operating current: 1.3 mA (at f OSC = 52 kHz)Fast 35-ns, cycle-by-cycle overcurrent limiting±1-A peak driving currentRail-to-rail output25-ns rise time20-ns fall time±1% accurate 2.5-V error amplifier referencePin-to-pin compatible and drop-in replacement for UCCx8C4xFunctional Safety-CapableDocumentationavailable to aid functional safety system designUndervoltage lockout options to support both Si and SiC MOSFET applications30-V VDD absolute maximum voltage1-MHz maximum fixed frequency operation50-µA startup current, 75-µA maximumLow operating current: 1.3 mA (at f OSC = 52 kHz)Fast 35-ns, cycle-by-cycle overcurrent limiting±1-A peak driving currentRail-to-rail output25-ns rise time20-ns fall time±1% accurate 2.5-V error amplifier referencePin-to-pin compatible and drop-in replacement for UCCx8C4xFunctional Safety-CapableDocumentationavailable to aid functional safety system design

Description

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-V gs, 18-V gs, or 15-V gs SiC MOSFETs, while also allowing for the exclusion of an external LDO. The UCCx8C5x family is offered in 8-pin VSSOP (DGK), and 8-pin SOIC (D) packages. 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-V gs, 18-V gs, or 15-V gs SiC MOSFETs, while also allowing for the exclusion of an external LDO. The UCCx8C5x family is offered in 8-pin VSSOP (DGK), and 8-pin SOIC (D) packages.