UCC28700 Series

Compact primary-side regulation PWM controller with automotive grade

Catalog(4 parts)

Part	Board Type	Voltage - Output▲▼	Utilized IC / Part	Main Purpose	Regulator Topology	Current - Output▲▼	Voltage - Input▲▼	Voltage - Input▲▼	Outputs and Type	Outputs and Type▲▼	Power - Output▲▼	Supplied Contents	Mounting Type	Operating Temperature▲▼	Operating Temperature▲▼	Fault Protection	Frequency - Switching▲▼	Frequency - Switching▲▼	Voltage - Start Up▲▼	Voltage - Supply (Vcc/Vdd)▲▼	Voltage - Supply (Vcc/Vdd)▲▼	Output Isolation	Supplier Device Package	Package / Case	Topology	Grade	Qualification
Texas Instruments UCC28700EVM-068 UCC28700 - AC/DC, Primary Side 1, Isolated Outputs Evaluation Board	Fully Populated	5 V	UCC28700	AC/DC, Primary Side	Flyback	1 A	100 Vrms	240 Vrms	Isolated	1 ul	5 W	Board(s)
Texas Instruments UCC28700DBVT Converter Offline Flyback Topology 1kHz ~ 130kHz SOT-23-6													Surface Mount	125 °C	-20 °C	Current Limiting, Over Voltage	1000 Hz	130000 Hz	21 V	35 V	9 V	Isolated	SOT-23-6	SOT-23-6	Flyback
Texas Instruments UCC28700DBVR Converter Offline Flyback Topology 1kHz ~ 130kHz SOT-23-6													Surface Mount	125 °C	-20 °C	Current Limiting, Over Voltage	1000 Hz	130000 Hz	21 V	35 V	9 V	Isolated	SOT-23-6	SOT-23-6	Flyback
Texas Instruments UCC28700QDBVRQ1 Converter Offline Flyback Topology 1kHz ~ 130kHz SOT-23-6													Surface Mount	125 °C	-40 °C	Current Limiting, Over Voltage	1000 Hz	130000 Hz	21 V	35 V	9 V	Isolated	SOT-23-6	SOT-23-6	Flyback	Automotive	AEC-Q100

Key Features

• Qualified for Automotive ApplicationsAEC-Q100 Qualified with the Following Results:Device Temperature Grade 1: –40°C to 125°CDevice HBM Classification Level 2: ±2 kVDevice CDM Classification Level C4B: 750 VFunctional Safety-CapableDocumentationavailable to aid functional safety system design< 30-mW Standby Power ConsumptionPrimary-Side Regulation (PSR) Eliminates Opto-Coupler±5% Voltage and Current Regulation130-kHz Maximum Switching FrequencyQuasi-Resonant Valley-Switching Operation for Highest Overall EfficiencyPatent-Pending Frequency-Jitter Scheme to Ease EMI ComplianceWide VDD Range Allows Small Bias CapacitorClamped Gate-Drive Output for MOSFETProtection Functions: Overvoltage, Low-Line, and OvercurrentProgrammable Cable CompensationSOT23-6 PackageQualified for Automotive ApplicationsAEC-Q100 Qualified with the Following Results:Device Temperature Grade 1: –40°C to 125°CDevice HBM Classification Level 2: ±2 kVDevice CDM Classification Level C4B: 750 VFunctional Safety-CapableDocumentationavailable to aid functional safety system design< 30-mW Standby Power ConsumptionPrimary-Side Regulation (PSR) Eliminates Opto-Coupler±5% Voltage and Current Regulation130-kHz Maximum Switching FrequencyQuasi-Resonant Valley-Switching Operation for Highest Overall EfficiencyPatent-Pending Frequency-Jitter Scheme to Ease EMI ComplianceWide VDD Range Allows Small Bias CapacitorClamped Gate-Drive Output for MOSFETProtection Functions: Overvoltage, Low-Line, and OvercurrentProgrammable Cable CompensationSOT23-6 Package

Description

The UCC28700-Q1 of flyback power supply controllers provides Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current. Low start-up current, dynamically controlled operating states and a tailored modulation profile support very low standby power without sacrificing start-up time or output transient response. Control algorithms in the UCC28700-Q1 allows operating efficiencies to meet or exceed applicable standards. The output drive interfaces to a MOSFET power switch. Discontinuous Conduction Mode (DCM) with valley switching reduces switching losses. Modulation of switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges. The controllers have a maximum switching frequency of 130 kHz and always maintain control of the peak-primary current in the transformer. Protection features help keep primary and secondary component stresses in check. The UCC28700-Q1 allows the level of cable compensation to be programmed. The UCC28700-Q1 of flyback power supply controllers provides Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current. Low start-up current, dynamically controlled operating states and a tailored modulation profile support very low standby power without sacrificing start-up time or output transient response. Control algorithms in the UCC28700-Q1 allows operating efficiencies to meet or exceed applicable standards. The output drive interfaces to a MOSFET power switch. Discontinuous Conduction Mode (DCM) with valley switching reduces switching losses. Modulation of switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges. The controllers have a maximum switching frequency of 130 kHz and always maintain control of the peak-primary current in the transformer. Protection features help keep primary and secondary component stresses in check. The UCC28700-Q1 allows the level of cable compensation to be programmed.