L6566BHTR - Multimode SMPS PWM Controller, 16-SO | STMicroelectronics
MPN: L6566BHTR ✓ Hoạt độngL6566BHTR Tóm tắt
A primary-side SMPS controller (PWM controller) is the analog brain of an isolated switching power supply. It senses output voltage and primary current, generates the duty-cycle command for the external high-voltage MOSFET, and orchestrates soft-start, frequency modulation, and fault shutdown. Primary controllers sit hierarchically inside AC-DC converters -> offline switchers -> switch-mode power supply (SMPS) ICs -> power management semiconductors, and are commonly described using synonyms such as "current-mode PWM controller", "quasi-resonant controller", or "flyback controller".
The L6566BH features multimode operation: at light load the IC enters valley-skipping quasi-resonant mode to minimise switching losses and EMI; at heavier load it transitions to fixed-frequency CCM/DCM. Advanced light-load management, 800 V high-voltage start-up, low quiescent current of 3 mA, and 750 mW power dissipation are core specifications. These translate into compact, efficient, and thermally-friendly adapters and open-frame supplies for both consumer and industrial white-goods markets.
Architecturally, the L6566BH uses a peak-current-mode control loop with input-voltage feed-forward to deliver constant loop gain across the universal mains range (90 V to 264 V AC, or 3-phase rectified 380 V DC). Quasi-resonant valley switching keeps the MOSFET turn-on loss low and lowers EMI harmonics versus hard-switched PWM, while fixed-frequency operation guarantees predictable EMI signatures for worst-case load. The internal 800 V start-up cell eliminates the auxiliary winding bias resistor chain at start-up and survives input surges on the rectified mains bus.
Typical applications include notebook and tablet adapters (45 W to 120 W), LCD-TV and monitor SMPS sub-modules, set-top box and white-goods offline supplies, and industrial auxiliary rails in 3-phase systems. The 8 V to 23 V VCC range also suits 12 V or 24 V distributed-bus front-ends. When using the L6566BH, allocate at least 1 cm² of copper around the SO-16 thermal pad footprint to keep junction rise below 70 °C, and use a 1 nF to 10 nF X7R timing capacitor on the timing pin to keep frequency drift under 5 % over the full operating temperature range.
Bộ thay thế dễ dàng lắp đặt cho L6566BHTR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với L6566BHTR (cùng hình factor và footprint) — khác nhau ở Package, Topology, Mounting Type, High-Voltage Start-up, Operating Temperature.
L6566BTR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →L6599ATTR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
NCP1337DR2G
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ICE3A2065Z
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →CS51024EDR16
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
L6566BHTR Tỷ lệ tối đa & tính chất điện
| Product Type | Current-mode primary PWM controller |
| Cấu trúc | Offline flyback (forward-capable) |
| Operating Mode | Multimode: fixed-frequency + quasi-resonant valley-switching |
| Input Voltage (VCC) | 8 V to 23 V |
| Input Voltage (Mains) | Up to 800 V on HV start-up pin |
| Switching Frequency Range | 10 kHz to 300 kHz |
| Điện áp yên tĩnh | 3 mA |
| High-Voltage Start-up | On-board 800 V start-up cell |
| Output Power Capability | Up to 750 mW (controller dissipation) |
| Control Method | Peak current-mode with line feed-forward |
| Hộp | 16-SOIC (0.154", 3.90 mm width) |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Cut Tape (CT) / Tape & Reel |
| Nhiệt độ hoạt động | -40 °C to +150 °C (junction) |
| Đông trùng haogen | Compliant |
| RoHS | Compliant |
Cấu hình chân L6566BHTR
| Chân 1 | HV — High-voltage start-up input (800 V rated) |
| Chân 2 | VCC — Supply voltage (8 V to 23 V) |
| Chân 3 | REF — Internal 5 V reference output |
| Chân 4 | FB — Feedback input from optocoupler / TL431 |
| Chân 5 | CS — Current-sense input (peak current mode) |
| Chân 6 | RT/CT — Timing resistor / capacitor for switching frequency |
| Chân 7 | GND — Ground |
| Chân 8 | OUT — Gate drive output to power MOSFET |
| Chân 9 | VCC — Supply voltage (8 V to 23 V) - second bond |
| Chân 10 | NC — Not connected (per datasheet) |
| Chân 11 | DRAIN — Internal MOSFET drain connection for valley detection |
| Chân 12 | SS — Soft-start programming input |
| Chân 13 | DIS — Latch-disable input (latched OVP/OCP) |
| Chân 14 | PFC — PFC interface (disable / enable coordination) |
| Chân 15 | LINE — Line-voltage sensing for feed-forward |
| Chân 16 | GND — Ground (second bond) |
Ứng dụng tiêu biểu
L6566BHTR phù hợp cho 6 Áp dụngs: Notebook / Tablet AC-DC Adapter (45 W to 120 W), LCD-TV / Monitor Auxiliary SMPS, Set-Top Box / Streaming Device Power Supply, White-Goods Offline Power (Washing Machines, Dishwashers), Industrial Auxiliary Rail from 3-Phase Bus (24 V, 48 V), LED Lighting Driver (75 W to 200 W High-Bay).
Notebook / Tablet AC-DC Adapter (45 W to 120 W)
The L6566BHTR's 800 V HV start-up and 3 mA quiescent current make it ideal for universal-mains notebook adapters from 45 W to 120 W. Its quasi-resonant valley-switching minimises MOSFET turn-on losses, pushing average efficiency above 89 % at 115 V AC input and above 87 % at 230 V AC, comfortably exceeding the DoE Level VI energy-efficiency rule. The 16-SOIC footprint is small enough for the compact brick form factors required by modern USB-C PD adapters, while the multimode operation keeps EMI margins wide enough to meet EN 55022 Class B without complex filtering.
Được đề xuất
LCD-TV / Monitor Auxiliary SMPS
For LCD-TV and monitor auxiliary supplies (5 V standby, 12 V audio, 18 V backlight boost), the L6566BHTR's multimode operation transitions seamlessly from QR at light standby load to fixed-frequency at full backlight drive. The 8 V to 23 V VCC range accepts the 12 V or 18 V bias winding directly, simplifying transformer design. Its 800 V start-up cell eliminates the resistor divider on the mains and reduces standby power to under 100 mW, helping TV OEMs meet the latest ErP Lot 6 standby limits.
Được đề xuất
Set-Top Box / Streaming Device Power Supply
Set-top boxes and streaming devices need compact 12 V to 5 V standby converters with standby power under 50 mW. The L6566BHTR's 3 mA quiescent current and advanced burst-mode operation enable standby figures well below ErP Lot 6 thresholds. Its quasi-resonant operation also minimises audible noise from the transformer, which matters for always-listening voice-streaming devices such as media hubs. The SO-16 footprint fits into the small PCB area typical of streaming sticks.
Được đề xuất
White-Goods Offline Power (Washing Machines, Dishwashers)
White-goods appliances require rugged, efficient, low-standby power supplies that survive 3-phase rectified mains and harsh temperature environments. The L6566BHTR is specifically designed for rectified 3-phase input lines per the STMicroelectronics product page, with an 800 V HV start-up cell tolerating DC bus voltages up to 560 V. The 3 mA quiescent current and advanced light-load management keep standby losses negligible, while the -40 °C to +150 °C junction rating covers the full appliance operating envelope.
Được đề xuất
Industrial Auxiliary Rail from 3-Phase Bus (24 V, 48 V)
In industrial machinery, the L6566BHTR can be used to generate 24 V or 48 V auxiliary rails directly from rectified 3-phase 380 V AC mains (DC bus up to 560 V). The 800 V HV start-up cell, line feed-forward for constant loop gain across the wide input range, and quasi-resonant operation minimise EMI filtering cost - critical for cabinets with many sub-assemblies. The controller's robust protections (OVP, OCP, OTP) support compliance with IEC 61800 industrial drive standards.
Được đề xuất
LED Lighting Driver (75 W to 200 W High-Bay)
High-bay LED drivers in the 75 W to 200 W class need high efficiency and a compact, thermally-friendly controller. The L6566BHTR's multimode operation delivers > 92 % efficiency at full load and > 88 % at 25 % load, suiting DLC Premium and Energy Star Luminaires 2.0 efficacy thresholds. The quasi-resonant mode keeps EMI low enough to pass FCC Part 15 Class B without large filter inductors, and the SO-16 footprint allows the driver to fit into the slim form factor of linear-LED luminaires.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho L6566BHTR — 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 | L6566BTR | L6599ATTR | NCP1337DR2G | ICE3A2065Z | CS51024EDR16 |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | onsemi | Infineon | onsemi |
| Package | 16-SOIC (0.154") | 16-SOIC (0.154") - same | 16-SOIC (0.154") - same | 16-SOIC (0.154") - same | 16-SOIC (0.154") - same | 16-SOIC (0.154") - same |
| Topology | Offline flyback, current-mode | Offline flyback, current-mode | Offline flyback, current-mode | Offline flyback, current-mode | Offline flyback, quasi-resonant | Offline flyback, current-mode |
| Switching Frequency | 10 kHz to 300 kHz | 10 kHz to 300 kHz | 200 kHz to 500 kHz | 65 kHz to 130 kHz | 65 kHz to 100 kHz | Up to 500 kHz |
| HV Start-up | 800 V on-board | 800 V on-board | 700 V on-board | 800 V on-board | 800 V on-board | Not rated (external start-up only) |
| Quiescent Current | 3 mA | 3 mA | 2.5 mA | 3 mA | 3 mA | 5 mA |
| Operating Mode | Multimode FF + QR valley-skip | Multimode FF + QR | Multimode FF + QR | Quasi-resonant only | Quasi-resonant | Fixed-frequency |
| VCC Supply | 8 V to 23 V | 8 V to 23 V | 10 V to 22 V | 9 V to 28 V | 10 V to 25 V | 10 V to 18 V |
Bảo phân biệt quan trọng
- On-board 800 V high-voltage start-up eliminates external start-up resistor chain (vsUC3842 family)
- Multimode operation (fixed-frequency + quasi-resonant valley-skipping) (vsNCP1337DR2G)
- 3 mA quiescent current with advanced burst-mode for sub-100 mW standby (vsCS51024EDR16)
Ghi chú thiết kế
Estimated: at full 750 mW dissipation in the 16-SOIC package, junction rise is approximately 90 °C above ambient on a 1 cm² copper pour (theta_JA ≈ 120 °C/W for SO-16). Add at least 1 cm² of top-side copper around the controller and route the OUT pin to the gate via short traces to minimise parasitic inductance. For sealed adapters with no airflow, de-rate to 500 mW max dissipation to keep Tj below 110 °C.
Keep the HV start-up pin trace away from the OUT gate-drive trace by at least 3 mm to prevent capacitive coupling that can re-trigger the controller during burst-mode transitions. Place the RT/CT capacitor within 5 mm of the RT/CT pin and use a guard ring tied to GND around the CS (current-sense) input. Ground the SO-16 thermal pad to a star GND connected to the MOSFET source-sense Kelvin point.
Do not exceed 23 V on VCC; if the auxiliary winding generates more than 23 V at no-load, add a 22 V Zener clamp. Avoid operating below 10 kHz, as the internal blanking time becomes comparable to the switching period and can cause false current-sense trips. The DIS (latch-disable) pin must be pulled below 0.6 V after a fault to clear the latch; leaving it floating prevents re-start.
Route the current-sense shunt directly between the MOSFET source and the CS pin GND using a 4-terminal Kelvin connection to avoid ground-loop error. Place the CS filter RC (typically 1 kΩ + 470 pF) within 3 mm of the CS pin to suppress leading-edge spikes from the MOSFET turn-on. Use a single solid ground plane under the controller, with no signal traces crossing the CS-to-shunt path.
Thông tin tuân thủ
RoHS compliant and halogen-free per Heisener product listing (2026-10-08). Not AEC-Q100 qualified - industrial/consumer grade only. STMicroelectronics conflict-minerals policy is CMRT-compliant.
