UCC28740QDRQ1
ActiveAUTOMOTIVE ULTRA LOW STANDBY, FLYBACK CONTROLLER WITH INTEGRATED HV STARTUP AND OPTOCOUPLER FEEDBACK
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UCC28740QDRQ1
ActiveAUTOMOTIVE ULTRA LOW STANDBY, FLYBACK CONTROLLER WITH INTEGRATED HV STARTUP AND OPTOCOUPLER FEEDBACK
Technical Specifications
Parameters and characteristics for this part
| Specification | UCC28740QDRQ1 |
|---|---|
| Fault Protection | Over Voltage, Current Limiting |
| Frequency - Switching [Max] | 100 kHz |
| Frequency - Switching [Min] | 170 Hz |
| Grade | Automotive |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 C |
| Output Isolation | Isolated |
| Package / Case | 0.154 in, 3.9 mm, 7 Leads |
| Package / Case | 8-SOIC |
| Qualification | AEC-Q100 |
| Supplier Device Package | 7-SOIC |
| Topology | Flyback |
| Voltage - Start Up | 21 V |
| Voltage - Supply (Vcc/Vdd) [Max] | 35 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 9 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | N/A | 1636 | $ 1.58 | |
| Texas Instruments | LARGE T&R | 1 | $ 1.21 | |
| 100 | $ 0.93 | |||
| 250 | $ 0.69 | |||
| 1000 | $ 0.49 | |||
Description
General part information
UCC28740-Q1 Series
The UCC28740-Q1 isolated-flyback power-supply controller regulates the output using an optical coupler to provide fast transient response to large-load steps.
An internal 700-V startup switch, dynamically controlled operating states, and a tailored modulation profile support ultra-low standby power without sacrificing startup time or output transient response.
Control algorithms in the UCC28740-Q1 allow operating efficiencies to meet or exceed applicable standards. The drive output 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.
Documents
Technical documentation and resources