ICE2QR4765 650V QR PWM Controller for Bitmain APW8 APW9 APW12 PSU
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ICE2QR4765 Quasi-Resonant PWM Controller for Bitmain APW8/APW9/APW12 Power Supply
The ICE2QR4765 is an integrated AC/DC quasi-resonant PWM controller with an embedded 650V CoolMOS® power switch, commonly used in the Bitmain APW8, APW9 and APW12 power supply units. It is designed for compact, efficient off-line SMPS applications and is ideal as a replacement controller chip during PSU repair and refurbishment.
Based on the QR CoolSET™ platform, the ICE2QR4765 combines a power transistor, startup cell and current-mode flyback controller in a single DIP-8 package, simplifying layout and reducing component count in high-density power supplies.
Key Features
- Integrated 650V CoolMOS® power switch
- Quasi-resonant (QR) current-mode flyback control
- Optimized for off-line SMPS up to around 16W design power
- Reduced switching losses and improved efficiency
- Wide AC input range capability via flyback topology
- Compact DIP-8 through-hole package for easy replacement
- Suitable for Bitmain APW8/APW9/APW12 PSU repair and other low-power SMPS
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | ICE2QR4765 |
| Product Category | AC/DC Converter |
| Function | Quasi-resonant PWM flyback controller with integrated MOSFET |
| Topology | QR current-mode flyback SMPS |
| Integrated Switch Voltage Rating | 650V |
| Package | DIP-8, through-hole |
| Typical SMPS Power Level | Up to approx. 16W design power |
| Qualification | AEC-Q100 |
| Product Type | AC/DC Converter, PWM Controller |
| Subcategory | PMIC – Power Management IC |
| Part Aliases | SP000644950 / ICE2QR4765XK / ICE2QR4765XKLA1 |
| Packaging Form | Tube |
| Unit Weight | Approx. 557 mg |
Typical Applications
- Bitmain APW8, APW9 and APW12 PSU repair and refurbishment
- Standby and auxiliary power supplies in ASIC miners
- Low- to medium-power off-line adapters and chargers
- Consumer SMPS such as set-top boxes, small TV/monitor supplies, meters and auxiliary rails
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