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Product Advantage ▼
1. Full universal AC input range from 85V to 265V, compatible with global household power grids, stable operation under different grid voltages.
2. Built-in 700V high-voltage power MOSFET, high withstand voltage, effectively resist instantaneous voltage surge and improve product safety margin.
3. Integrated internal high-voltage startup circuit, no external startup resistor needed, reduce peripheral BOM quantity and PCB layout difficulty.
4. Equipped with 16ms soft-start circuit, suppress startup surge current, avoid instantaneous impact damage to peripheral circuit components.
5. Internal high & low voltage power compensation circuit, keep consistent maximum output power under low and high AC input voltage conditions.
6. Proprietary self-power supply patent technology, transformer without auxiliary winding required, simplify transformer processing and lower magnetic material cost.
7. Built-in frequency jitter modulation circuit, disperse switching noise, greatly reduce EMI filter configuration and EMC debugging cycle cost.
8. Comprehensive multi-protection design: over voltage, over temperature, over current, overload, output open-circuit and short-circuit automatic lockout protection to avoid power supply burnout.
Technical Parameters ▼
Attribute | Specification |
|---|---|
Product Category | AC-DC Controllers & |
Isolation Type | Isolated |
Operating Voltage | 4.65V~5.25V |
Switching Frequency | 61kHz~69kHz |
Output Current | N/A |
Power Dissipation (Pd) | 1W |
Max Duty Cycle | 70% |
MOSFET Withstand Voltage | 700V |
Topology | Flyback |
Function Features | Light load high |
Operating Temperature | -20℃~+140℃ |
Operating Mode | PWM Modulation |
Output Voltage | N/A |
Feedback Method | Secondary Side |
Product Uses ▼
1. Power supply for DVD, VCR and Set-Top Box (STB)
This series of AC-DC flyback control ICs is perfectly matched with household audio and video equipment power boards. It adopts wide universal voltage input to adapt to unstable household grid voltage in various regions. Built-in complete multi-protection circuits can effectively avoid equipment damage caused by voltage surges or short circuits. The low standby power design meets energy efficiency standards for home entertainment devices, and the highly integrated structure simplifies PCB layout to reduce the overall volume of built-in power modules of DVD players, video recorders and TV set-top boxes.
2. Power adapters & battery chargers
Suitable for developing all kinds of low and medium power wall-mounted adapters and USB charging power supplies. The patented self-power supply technology removes the need for transformer auxiliary windings, cutting BOM costs and transformer processing difficulty. Internal frequency jitter circuit lowers EMI debugging cost for manufacturers, and the soft-start function suppresses startup surge current to protect charging equipment and lithium batteries. Widely used in router adapters, monitor power supplies, mobile device chargers and small digital device power modules.
3. LED driving power supply
Ideal drive core IC for various low-to-medium power LED lighting products such as LED strip lights, desk lamps, ceiling lamps and small spotlights. Ultra-low standby power consumption reduces long-term energy loss of lighting equipment. Comprehensive over-temperature, short-circuit and over-voltage protection can prevent LED beads from burning out due to abnormal current and voltage. Simple peripheral circuits help lighting manufacturers control production costs, and the full-range AC input design supports global commercial and household LED lighting power supply development.
FAQ ▼
Q1: Does this IC require a transformer auxiliary vinding?
A: No, it adopts proprietary self-power supply design. You don't need auxiliary winding on the transformer or external startup resistors, which greatly simplifies transformer manufacturing, cuts PCB peripheral components and reduces overall material cost for your power supply products.
Q2: Can the chip work normally under unstable global AC voltage?
A: Yes, it supports full 85-265V universal AC input with built-in high-low voltage power compensation. It maintains stable rated output power under fluctuating grid voltage, perfectly matching household power grids of most countries and regions worldwide.
Q3: What protective functions are integrated inside the power chip?
A: This flyback IC equips complete multi-protection circuits including OVP, OTP, OCP, overload and short-circuit lockout protection. It will automatically stop switching once abnormal conditions appear to avoid burnout of the power supply and connected terminal electronic.
Q4: Is there an EMI optimization design on the chip?
A: It has built-in frequency jitter modulation circuit to scatter switching noise spectrum. It reduces the configuration requirement of peripheral EMI filters, shortens your EMC debugging cycle and lowers the extra testing and production cost brought by electromagnetic.
