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Texas Instruments UCC28720 | Demoboard PMP8678
High Voltage Input (184Vac…707Vac) to 12V@1A, 3.3V@100mA Non-isolated Flyback Reference Design
Overview
| Topology | Flyback Converter |
| Input voltage | 184-275 V |
| Output 1 | 12 V / 1 A |
| IC revision | C |
Description
The UCC28720 is a quasi resonant controller and is specialized to drive high voltage BJTs. When the drain voltage is higher than 1KV, BJTs are the best choice for low to mid power flyback converters. In this case two voltages are supplied: 12V@1A and 3.3V@100mA.
Features
- Over 84% efficiency at full load
- Over 70% efficiency at 10% load
- Provides 12V and 3.3V outputs
- Works continuously up to 440Vac input and survives 1KVpeak surge
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IR (A) | ISAT (A) | RDC max. (Ω) | VT (V (AC)) | fres (MHz) | Version | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 74408942470 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-SPC SMT Power Inductor | 47 | 0.66 | 1 | 0.608 | – | 10 | SMT | SMT | ||
 | 768772102 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TI HV Radial Leaded Wire Wound Inductor (High Voltage) | 1000 | 0.5 | 0.55 | 2.08 | – | 1.8 | Standard | THT | ||
 | 750314382 | SPEC | 4 files | Active i| Production is active. Expected lifetime: >10 years. | Flyback Transformer | 4500 | – | 0.48 | – | 3300 | – | – | THT |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 74408942470 | SPEC | |
| 768772102 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | |
| 750314382 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IR (A) | ISAT (A) | RDC max. (Ω) | VT (V (AC)) | fres (MHz) | Version | Mount | Samples |
|---|
