UCC25701PWG4 vs STR-X6757N
| Part Number |
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| Category | PMIC - AC DC Converters, Offline Switchers | PMIC - AC DC Converters, Offline Switchers |
| Manufacturer | Texas Instruments | Sanken |
| Description | IC OFFLINE SW MULT TOP 14TSSOP | IC OFFLINE SWITCH FLYBACK TO3P |
| Package | Tube | Bulk |
| Series | - | STR-X6700 |
| Operating Temperature | -55°C ~ 150°C (TJ) | -20°C ~ 125°C (TA) |
| Mounting Type | Surface Mount | Through Hole |
| Package / Case | 14-TSSOP (0.173\", 4.40mm Width) | TO-3P-7 Full Pack, Formed Leads |
| Supplier Device Package | 14-TSSOP | TO-3P |
| Topology | Boost, Flyback, Forward | Flyback |
| Voltage - Supply (Vcc/Vdd) | 9V ~ 15V | 9.7V ~ 35V |
| Frequency - Switching | 700kHz | 19kHz ~ 25kHz |
| Control Features | Soft Start, Sync | Soft Start |
| Power (Watts) | - | - |
| Voltage - Breakdown | - | 500V |
| Internal Switch(s) | No | Yes |
| Output Isolation | Isolated | Isolated |
| Voltage - Start Up | 13 V | 18.2 V |
| Duty Cycle | 99% | - |
| Fault Protection | Current Limiting | Current Limiting, Over Load, Over Voltage |
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1. What is an AC/DC converter in a PMIC and what does it do?
An AC/DC converter is a power management IC that converts alternating current (AC) to direct current (DC). It is commonly used in home appliances, industrial equipment, and consumer electronics to provide a stable DC power supply for the circuit.
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2. 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.
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3. How efficient is an AC/DC converter?
The efficiency of AC/DC converters is usually between 70%-95%, depending on the design, topology and load conditions of the converter. Switching power supply topologies are generally more efficient.
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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.
