UCC3895DWG4 vs ICE2QR4765GXUMA1
| Part Number |
|
|
| Category | PMIC - AC DC Converters, Offline Switchers | PMIC - AC DC Converters, Offline Switchers |
| Manufacturer | Texas Instruments | Infineon Technologies |
| Description | IC OFFLINE SW FULL-BRDG 20SOIC | IC OFFLINE SWITCH FLYBACK 12DSO |
| Package | Tape & Reel (TR) | -Reel® |
| Series | - | CoolMOS™, CoolSET™-Q1 |
| Operating Temperature | 0°C ~ 70°C (TA) | -40°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 20-SOIC (0.295\", 7.50mm Width) | 12-BSOP (0.295\", 7.50mm Width) |
| Supplier Device Package | 20-SOIC | PG-DSO-12 |
| Function | - | - |
| Topology | Phase-Shifted Full-Bridge | Flyback |
| Output Type | PWM | - |
| Output Configuration | Positive | - |
| Number of Outputs | 1 | - |
| Output Phases | 1 | - |
| Voltage - Supply (Vcc/Vdd) | 10V ~ 16.5V | 10.5V ~ 27V |
| Frequency - Switching | 1MHz | 52kHz |
| Duty Cycle (Max) | 100% | - |
| Synchronous Rectifier | - | - |
| Clock Sync | Yes | - |
| Control Features | Frequency Control, Soft Start, Sync | - |
| Serial Interfaces | - | - |
| Power (Watts) | - | 29 W |
| Voltage - Breakdown | - | 650V |
| Internal Switch(s) | - | Yes |
| Output Isolation | - | Isolated |
| Voltage - Start Up | - | 18 V |
| Duty Cycle | - | 50% |
| Fault Protection | - | Current Limiting, Over Load, Over Temperature, Over Voltage |
-
1. What is an offline switching power supply and how is it different from other AC/DC converters?
An offline switching power supply (Offline Switcher) is an AC/DC converter that can directly obtain power from the mains without an external transformer. It is suitable for inputs with a wide voltage range and usually has efficient switching regulation.
-
2. What are some common applications of PMIC AC/DC converters?
PMIC AC/DC converters are widely used in scenarios that require AC power to DC, such as chargers, adapters, LED driver power supplies, industrial control equipment, smart home devices, and battery management systems.
-
3. How important is power factor correction (PFC) for AC/DC converters?
Power factor correction (PFC) is very important for meeting energy regulations and improving power efficiency, especially in high-power applications. PFC circuits can reduce the harmonic interference of equipment to the power grid.
-
4. How to improve the efficiency of AC/DC converters?
Choose a more efficient switching topology (such as resonant or quasi-resonant topology), use more efficient semiconductor devices (such as GaN or SiC transistors), and optimize circuit design to reduce switching losses and heat losses.
