U2008B-MFPY - Bipolar Phase-Control IC for AC Motors | Microchip
MPN: U2008B-MFPY ✓ Hoạt độngU2008B-MFPY Tóm tắt
A phase-control IC is an analog/mixed-signal controller that delays the firing angle of a semiconductor switch (typically a triac) on each half-cycle of the AC mains, regulating the RMS voltage delivered to a load. Within the broader power-management hierarchy, the U2008B-MFPY belongs to the motor-driver and motion-controller IC family, which in turn sits under PMIC (Power Management IC) and discrete-semiconductor-driver categories. This sub-category is used universally in consumer appliances, power tools, and light-industrial motor controllers where cost-sensitive variable-speed AC motor drive is required.
Key features include full-wave load-current sensing for closed-loop torque regulation, automatic mains-voltage compensation to maintain constant motor speed across 110 V to 240 V mains, switchable soft-start or load-current sensing, and built-in voltage/current synchronization to the AC line. Internal voltage and current references provide a self-contained solution that typically needs only a triac, an RC timing network, and a sense resistor externally. Operating temperature range is -10 °C to +125 °C, suiting appliance and industrial environments.
Typical applications include universal-motor speed control in washing machines, vacuum cleaners, hand-held power tools, fans, and small pumps. According to the Atmel/Microchip datasheet, the IC's load-current feedback enables torque compensation, while the mains-compensation loop rejects ±20% line variation, ensuring constant motor speed regardless of supply fluctuations. The bipolar process technology gives robust transient immunity typical of mature appliance-class controllers.
When designing with this device, route the triac gate drive and the AC sense lines away from the mains to avoid dv/dt-induced misfires, and use a proper snubber on the triac. Always consult the manufacturer datasheet for the recommended sense-resistor value and RC timing network, as these set the soft-start time and the firing-angle range.
Bộ thay thế dễ dàng lắp đặt cho U2008B-MFPY — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
U2008B-MFP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
U2008B-MFPG3
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
U2010B-MFP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
U2010B-MFPG3
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
U2008B-MFPG3Y
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
U2008B-MFPY Tỷ lệ tối đa & tính chất điện
| Manufacturer | Microchip Technology (formerly Atmel / Telefunken Semiconductors) |
| Product Type | Bipolar Phase-Control IC / AC Motor Controller |
| Số lượng đầu ra | 1 |
| Cấu trúc | Phase-control, full-wave with triac gate drive |
| Supply Voltage (VCC) | 14.5 V to 16.5 V |
| Load Voltage (Mains) | Mains-coupled, externally triac-limited |
| Nhiệt độ hoạt động | -10 °C to +125 °C |
| Hộp | 8-pin SOIC (SO-8) |
| Kiểu lắp đặt | Surface Mount |
| Mains Compensation | Yes, automatic |
| Load-Current Sensing | Yes, full-wave |
| Bắt đầu mềm | Yes, variable / switchable |
| Overload Protection | Yes (load-current feedback) |
| Voltage/Current Synchronization | Yes, internal to AC line |
Cấu hình chân U2008B-MFPY
| Chân 1 | VS / SYNC — Mains voltage synchronization / supply sense input |
| Chân 2 | RC — External RC timing network sets firing angle |
| Chân 3 | SENSE — Load-current sensing input (full-wave) |
| Chân 4 | GND — Ground |
| Chân 5 | GATE — Triac gate drive output |
| Chân 6 | REF — Internal reference / compensation network |
| Chân 7 | SS/LS — Soft-start / load-sense select |
| Chân 8 | VCC — +14.5 V to +16.5 V supply |
Ứng dụng tiêu biểu
U2008B-MFPY phù hợp cho 6 Áp dụngs: Washing-Machine Universal-Motor Speed Control, Vacuum-Cleaner Suction-Motor Control, Hand-Held Power-Tool Speed Control, Kitchen-Appliance Motor Control (Mixers, Blenders), Ceiling-Fan and Exhaust-Fan Speed Regulation, Small Pump and Compressor Speed Drive.
Washing-Machine Universal-Motor Speed Control
The U2008B-MFPY's full-wave load-current sensing and mains-compensated phase control make it a natural fit for washing-machine drum-motor drive. The IC closes a torque-control loop via an external sense resistor, holding constant drum speed through wash-spin transitions even as laundry load changes. Its 14.5-16.5 V single-rail supply derives cheaply from the AC mains via a dropping resistor, eliminating the need for an auxiliary switching converter, while the integrated soft-start prevents drum-impact current spikes at the start of each cycle.
Được đề xuất
Vacuum-Cleaner Suction-Motor Control
Hand-stick and canister vacuum cleaners rely on universal motors whose suction must stay roughly constant as filter loading changes. The U2008B-MFPY senses load current continuously and adjusts the triac firing angle to maintain target RPM, so the user perceives steady suction even as the filter clogs. Its -10 to +125 °C operating range tolerates the hot air near the motor, and the small SO-8 footprint suits the cramped handle-mounted control PCB typical of cordless vacuums.
Được đề xuất
Hand-Held Power-Tool Speed Control
Drills, jigsaws, and angle grinders use the U2008B-MFPY to provide trigger-proportional speed with soft-start. The IC's variable soft-start prevents the dangerous torque kick when the trigger is pulled from standstill, protecting gearboxes and clutches. Because the part needs only an external triac, a sense resistor, and an RC network, the total BOM cost is well below an MCU-based solution, which is decisive in cost-sensitive consumer power tools.
Được đề xuất
Kitchen-Appliance Motor Control (Mixers, Blenders)
Countertop mixers and blenders use small universal motors whose speed the user sets with a rotary knob. The U2008B-MFPY's mains-compensation holds the selected speed across brown-out and over-voltage events on unstable mains, while its soft-start limits inrush so the kitchen appliance does not trip the house breaker on cold-start. Operating up to 125 °C, the IC sits safely inside the appliance housing near the motor without additional cooling.
Được đề xuất
Ceiling-Fan and Exhaust-Fan Speed Regulation
Ceiling fans and bathroom exhaust fans use shaded-pole or small universal motors that can be phase-angle modulated for stepless speed control. The U2008B-MFPY drives the external triac to vary the RMS voltage on the motor winding, giving smooth speed ramps instead of the discrete steps produced by capacitor-style fan switches. Its overload-protection feature, derived from load-current sensing, can also be wired to shut down on stalled-rotor conditions, adding a safety net for unattended fans.
Được đề xuất
Small Pump and Compressor Speed Drive
Aquarium pumps, bilge pumps, and small diaphragm compressors benefit from the U2008B-MFPY's closed-loop load-current feedback, which keeps flow rate constant despite head-pressure variation. The IC's automatic mains compensation rejects ±20% line variation, so a 110 V pump running on a 130 V generator still delivers rated flow. The 8-pin SOIC footprint makes the controller PCB a small module that can be retrofitted into existing pump housings without mechanical redesign.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho U2008B-MFPY — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | U2008B-MFP | U2008B-MFPG3 | U2008B-MFPG3Y | U2010B-MFP | U2010B-MFPG3 |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology (formerly Atmel / TFK) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-8 | SOIC-8 - same | SOIC-8 - same | SOIC-8 - same | SOIC-8 - same | SOIC-8 - same |
| Supply Voltage (VCC) | 14.5 V to 16.5 V | 14.5 V to 16.5 V | 14.5 V to 16.5 V | 14.5 V to 16.5 V | 14.5 V to 16.5 V | 14.5 V to 16.5 V |
| Operating Temperature | -10 °C to +125 °C | -10 °C to +125 °C | -10 °C to +125 °C | -10 °C to +125 °C | -10 °C to +125 °C | -10 °C to +125 °C |
| Topology | Phase-control, full-wave load-current sensing | Phase-control, full-wave (same die) | Phase-control, full-wave (same die) | Phase-control, full-wave (same die) | Phase-control, improved regulation | Phase-control, improved regulation |
| Soft Start | Yes, variable / switchable | Yes, variable / switchable | Yes, variable / switchable | Yes, variable / switchable | Yes, programmable | Yes, programmable |
| Mains Compensation | Yes, automatic | Yes, automatic | Yes, automatic | Yes, automatic | Yes, automatic (improved accuracy) | Yes, automatic (improved accuracy) |
| Lifecycle Status | Active (legacy Atmel/TFK silicon) | Active (legacy Atmel/TFK silicon) | Active (legacy Atmel/TFK silicon) | Active (legacy Atmel/TFK silicon) | Active (newer variant) | Active (newer variant) |
Bảo phân biệt quan trọng
- Full integration of phase control + load-current feedback in a single analog IC (vsDiscrete RC phase-control circuits)
- Automatic mains-voltage compensation built in (vsMCU-based phase-angle drives)
- Switchable soft-start / load-current sensing (vsFixed-function competitors)
Ghi chú thiết kế
Route the triac gate-drive trace and the AC mains sense traces away from each other and away from the VCC rail. The IC's mains-synchronization input switches at high dv/dt; a coupling capacitance of even a few pF into the gate output can cause premature triac firing. Keep a clear creepage distance of at least 6 mm between mains-voltage traces and the low-voltage control section per IEC 60065 / IEC 60730 for household appliances.
Choose the external triac with adequate surge-current (ITSM) capability for the motor's locked-rotor inrush. A BTA16 is typically adequate for universal motors up to 1500 W; smaller BTA08 packages overheat on stall. Always add an RC snubber across the triac (typically 100 Ω + 100 nF) to prevent dv/dt retriggering, and size the sense resistor so that the IC's load-sense input does not exceed its absolute-maximum rating during motor stall.
The SO-8 package has a θJA of approximately 150 °C/W on a 1-oz 2-layer board with minimal copper. Because the U2008B-MFPY typically dissipates only 50-200 mW, no heatsink is required, but the external triac and sense resistor will run much hotter and dominate the thermal design. Estimate: at full 2 A RMS motor current, a BTA16 in TO-220 dissipates ~2 W and needs at least 10 cm² of copper pour or a clip-on heatsink to stay below 100 °C.
Thông tin tuân thủ
Compliance data not published in the verified web sources for the U2008B-MFPY; the part was originally released by Atmel in 1997 and later transferred to Telefunken Semiconductors before Microchip. The G3Y suffix typically denotes a lead-free / RoHS variant per Atmel/Microchip naming conventions, but verify with the manufacturer's product page before use.
