Datasheet UCC33420 (Texas Instruments) - 9

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UCC33420 www.ti.com
SLUSFK1E – JANUARY 2024 – REVISED FEBRUARY 2025
6.9 Electrical Characteristics (continued)
Over operating temperature range (TJ = –40°C to 150°C), VVINP = 5.0V, CIN1 = COUT1 = 15nF, CIN2 = 10µF, COUT2 = 22µF SEL connected to VCC, VEN/FLT = 5.0V unless otherwise noted. All typical values at VVINP=5.0V, TA = 25°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
fSw DC-DC Converter switching frequency 64.5 MHz
PRIMARY SIDE THERMAL SHUTDOWN
Primary-side over-temperature shutdown TSDP_R 150 165 ºC rising threshold Primary-side over-temperature shutdown TSDP_F 130 ºC falling threshold Primary-side over-temperature shutdown TSDP_H 20 ºC hysteresis
EN/FLT PIN
VEN_R Enable voltage rising threshold EN/FLT = 0V to 5.0V 2.1 V VEN_F Enable voltage falling threshold EN/FLT = 5.0V to 0V 0.8 V IEN Enable Pin Input Current EN/FLT = 5.0V 10 uA With a minimum 18kΩ (10% tolerance) VFLT EN/FLT pin voltage when faults occur 0.5 V resistor connected to EN/FLT pin EN/FLT pull down interval when faults tFault EN/FLT > 0.5V , Fault occur 200 us occur
VCC OUTPUT VOLTAGE (Secondary-side. All voltages with respect to GNDS)
VINP = 5.0V, SEL = VCC, Iout = 0 - 4.85 5 5.15 V 300mA Isolated supply regulated output voltage VINP = 5.0V, SEL = GNDS, I V out = 0 - CC 5.34 5.5 5.67 V 200mA Isolated supply regulated output voltage VINP = 4.5V - 5.5V; VCC = 5.0V / 5.5V -4 4 % accuracy VINP = 4.5V - 5.5V; VCC =5.0V, Iout = 4 12 mV/V 150mA VCC_Line Vcc DC line regulation VINP = 4.5V - 5.5V; VCC = 5.5V, Iout = 4 12 mV/V 150mA VINP = 5.0V; VCC = 5.0V, Iout = 0-300mA 0.5 0.7 % VCC_Load Vcc DC load regulation VINP = 5.0V; VCC = 5.5V, Iout = 0-200mA 0.5 0.7 % VCC_Rippl 20-MHz bandwidth, VINP = 5.0V , VCC = Voltage ripple on isolated supply output e 5.0V, Iout = 300mA, TA=25°C (1) 50 75 mV VINP = 5.0V, VCC = 5.0V, I EFF Efficiency P out = 300mA, VCC to PVINP 59 % TA = 25°C VINP = 5.0V, VCC = 5.0V, TA = 25°C, Iout = 70mA (1) 450 600 us VCC_Rise VCC rise time from 10% - 90% VINP = 5.0V, VCC = 5.5V, TA = 25°C, Iout = 70mA (1) 450 650 us
VCC UVP UNDER -VOLTAGE PROTECTION (Secondary-side. All voltages with respect to GNDS)
VCC under-voltage protection threshold KVCC_UVP VCC = 5.0V, V ratio UVP = VCC * 90% 90 % VUVP_H VCC under-voltage protection hysteresis VCC = 5.0V 79 100 121 mV VUVP_H VCC under-voltage protection hysteresis VCC = 5.5V 87 110 133 mV
VCC OVP OVER -VOLTAGE PROTECTION (Secondary-side. All voltages with respect to GNDS)
VVCC_OV VCC over-voltage protection rising VCC = 5.0V 5.45 5.5 V P_R threshold VVCC_OV VCC over-voltage protection hysteresis VCC = 5.0V 0.1 V P_H VVCC_OV VCC over-voltage protection rising VCC = 5.5V 5.9 5.96 V P_R threshold Copyright © 2025 Texas Instruments Incorporated Submit Document Feedback 9 Product Folder Links: UCC33420 Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Device Comparison 5 Pin Configuration and Functions 6 Specifications 6.1 Absolute Maximum Ratings 6.2 ESD Ratings 6.3 Recommended Operating Conditions 6.4 Thermal Information 6.5 Power Ratings 6.6 Insulation Specifications 6.7 Safety-Related Certifications 6.8 Safety Limiting Values 6.9 Electrical Characteristics 6.10 Typical Characteristics 7 Detailed Description 7.1 Overview 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 Enable and Disable 7.3.2 Output Voltage Soft-Start 7.3.3 Output Voltage Steady-State Regulation 7.3.4 Protection Features 7.3.4.1 Input Under-Voltage and Over-Voltage Lockout 7.3.4.2 Output Under-Voltage Protection 7.3.4.3 Output Over-Voltage Protection 7.3.4.4 Over-Temperature Protection 7.3.4.5 Fault Reporting and Auto-Restart 7.3.5 VCC Load Recommended Operating Area 7.3.6 Electromagnetic Compatibility (EMC) Considerations 7.4 Device Functional Modes 8 Application and Implementation 8.1 Application Information 8.2 Typical Application 8.2.1 Design Requirements 8.2.2 Detailed Design Procedure 8.3 Power Supply Recommendations 8.4 Layout 8.4.1 Layout Guidelines 8.4.2 Layout Example 9 Device and Documentation Support 9.1 Device Support 9.1.1 Third-Party Products Disclaimer 9.2 Documentation Support 9.2.1 Related Documentation 9.3 Receiving Notification of Documentation Updates 9.4 Support Resources 9.5 Trademarks 9.6 Electrostatic Discharge Caution 9.7 Glossary 10 Revision History 11 Mechanical and Packaging Information