L6566BHTR - Multimode SMPS PWM Controller, 16-SO | STMicroelectronics
MPN: L6566BHTR ✓ فعالL6566BHTR جائزہ
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.
کے لیے ڈراپ اِن متبادل L6566BHTR — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں L6566BHTR (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Topology, Mounting Type, High-Voltage Start-up, Operating Temperature.
L6566BTR
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →L6599ATTR
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
NCP1337DR2G
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ICE3A2065Z
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →CS51024EDR16
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
L6566BHTR زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Product Type | Current-mode primary PWM controller |
| ٹوپولوجی | 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 |
| کوئیسینٹ کرنٹ | 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 |
| پیکیج | 16-SOIC (0.154", 3.90 mm width) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| Packaging | Cut Tape (CT) / Tape & Reel |
| آپریٹنگ درجہ حرارت | -40 °C to +150 °C (junction) |
| ہیلوجن فری | Compliant |
| RoHS | Compliant |
L6566BHTR پن کنفیگریشن
| پن 1 | HV — High-voltage start-up input (800 V rated) |
| پن 2 | VCC — Supply voltage (8 V to 23 V) |
| پن 3 | REF — Internal 5 V reference output |
| پن 4 | FB — Feedback input from optocoupler / TL431 |
| پن 5 | CS — Current-sense input (peak current mode) |
| پن 6 | RT/CT — Timing resistor / capacitor for switching frequency |
| پن 7 | GND — Ground |
| پن 8 | OUT — Gate drive output to power MOSFET |
| پن 9 | VCC — Supply voltage (8 V to 23 V) - second bond |
| پن 10 | NC — Not connected (per datasheet) |
| پن 11 | DRAIN — Internal MOSFET drain connection for valley detection |
| پن 12 | SS — Soft-start programming input |
| پن 13 | DIS — Latch-disable input (latched OVP/OCP) |
| پن 14 | PFC — PFC interface (disable / enable coordination) |
| پن 15 | LINE — Line-voltage sensing for feed-forward |
| پن 16 | GND — Ground (second bond) |
عام استعمالات
L6566BHTR کے لیے موزوں ہے 6 ایپلیکیشنs: 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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا L6566BHTR — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | 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 |
اہم امتیازی خصوصیات
- On-board 800 V high-voltage start-up eliminates external start-up resistor chain (بمقابلہUC3842 family)
- Multimode operation (fixed-frequency + quasi-resonant valley-skipping) (بمقابلہNCP1337DR2G)
- 3 mA quiescent current with advanced burst-mode for sub-100 mW standby (بمقابلہCS51024EDR16)
ڈیزائن نوٹس
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.
تعمیل کی معلومات
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.
