My Inquiry
My Account
Diodes Incorporated AP39811AS7-13
- Part No.:
- AP39811AS7-13
- Manufacturer:
- Diodes Incorporated
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Datasheet:
-
AP39811AS7-13.pdf
- Description:
- IC OFFLINE SWITCH FLYBACK 7SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,988
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP39811AS7-13 from Diodes Incorporated is a primary-side regulated (PSR) flyback power switcher integrating a 650V N-channel MOSFET and controller for shaver charger applications. It delivers slant IV curve control without opto-coupler or secondary feedback, achieves ≤75mW no-load input power, operates in PFM/AM hybrid mode, and provides valley-on switching with built-in transformer saturation protection and VCC overvoltage protection.
For engineers reviewing the AP39811AS7-13 datasheet, AP39811AS7-13 pinout, AP39811AS7-13 application, or AP39811AS7-13 equivalent, key selection considerations include slant IV curve programmability via FB–CPR resistor, ±3% VCS jitter for EMI reduction, 2.35V FB threshold tolerance, 600mV typical peak current sense threshold, and SO-7 package thermal resistance of 78°C/W.
Technical Context
The AP39811AS7-13 implements primary-side regulation using auxiliary winding voltage sampling during tONS to derive output voltage and current-enabling CV, SV (slanted voltage), and CC modes without secondary sensing. Its dual-mode control (PFM + AM) maintains switching frequency above 20kHz across load range to suppress audible noise.
Valley-on turn-on reduces switching losses and introduces natural frequency jitter; combined with active ±3% VCS reference dithering over 12-cycle pattern, it improves conducted and radiated EMI performance. Line compensation is implemented via internal RLC network (60Ω) and external RFB1 to correct primary peak current variation across universal AC input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS Rating | 650V - supports universal AC input (85–265VAC) with margin for surge and ringing |
| RDS(on) | 9Ω - enables low conduction loss in DCM flyback at ≤1A continuous drain current |
| VFB Threshold | 2.35V ±50mV - sets precise CV regulation point; sampled during tSAMPLE (55–60% of tONS) |
| VCS_H | 600mV typ - peak current limit for full-load CC mode; defines maximum energy per cycle |
| tVAL-ON | 32μs typ - minimum off-time window enabling valley-switching at high efficiency and low EMI |
| VCC(OVP) | 32V typ - protects internal bias circuitry from bulk-cap overvoltage or startup overshoot |
| θJA | 78°C/W - defines thermal derating on standard FR-4 PCB with 1in² copper pour |
Pinout & Package
AP39811AS7-13 is housed in a 7-pin SOIC package (SO-7) with exposed drain pads for thermal enhancement and high-voltage isolation between primary and control circuitry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Multi-function feedback input | Samples auxiliary winding voltage for CV/SV regulation, detects tONS for CC control, senses line voltage and cable drop via internal resistive divider |
| 2 CPR | Cable compensation reference | Connects externally to FB via resistor to program slant IV slope; voltage here scales output voltage downward under increasing load |
| 3 VCC | Bias supply input | Accepts 10–28V DC; powers internal regulator, driver, and protection circuits; triggers UVLO shutdown below 6.8V |
| 4 SOURCE | MOSFET source terminal & current sense node | Connects to RCS current-sense resistor; provides primary-side current feedback to VCS comparator with 300ns leading-edge blanking |
| 5,6 DRAIN | MOSFET drain terminal | High-side switch node connected to primary winding; rated for 650V breakdown; shares thermal path with package backside |
| 7 GND | Signal ground reference | Return path for control logic, error amplifier, and driver; must be separated from power ground to avoid noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Primary-side regulation | Eliminates opto-coupler and TL431, reducing BOM count by ≥3 components and improving long-term reliability in compact shaver chargers |
| Slant IV curve control | Enables programmable transition from constant voltage to slanted voltage to constant current-meeting IEC 62368-1 touch-current limits for personal grooming devices |
| Valley-on switching | Reduces turn-on loss by >30% vs. hard-switching and lowers EMI peaks by spreading spectral energy across 10–500kHz band |
| Integrated protections | Includes VCC OVP, FB OVP, bulk-cap open detection, transformer anti-saturation (via primary peak current limiting), and OTP with 30°C hysteresis |
| Line compensation | Compensates for fixed propagation delay (~150ns) across 85–265VAC input, maintaining ±3% CC accuracy without trimming |
Applications
| Shaver Charger | Personal Care Device Adapter |
|---|---|
|
Use Scenario: Compact, sealed AC/DC adapter powering rotary or foil shavers with USB-C or proprietary barrel connector. IC Role / Device Role / Timing Role: Primary-side PSR controller and 650V power switch; regulates slant IV curve to meet IEC 62368-1 touch-current safety thresholds during battery charging. Use Value: Enables <75mW no-load power and eliminates opto-coupler-reducing size, cost, and failure risk while meeting global energy efficiency standards (DoE Level VI, CoC Tier 2). |
Use Scenario: Low-power (<10W) wall-mounted adapter for electric toothbrushes, hair trimmers, or epilators requiring safe, low-leakage output. IC Role / Device Role / Timing Role: Flyback controller implementing valley-on switching and multi-segment AM/PFM to maintain >20kHz operation across full load range and prevent audible coil whine. Use Value: Achieves 85%+ average efficiency at 20–100% load and passes EN 55032 Class B conducted EMI without Y-cap or common-mode choke. |
| Low-Power Universal Input PSU | Compact Medical Charging Module |
|
Use Scenario: 5–8W isolated power supply for IoT sensors, smart home hubs, or BLE peripherals operating from global AC mains. IC Role / Device Role / Timing Role: Integrated PSR switcher with built-in line compensation and cable compensation-enabling consistent CC/CV behavior across 85–265VAC and varying cable lengths. Use Value: Reduces design validation time by eliminating secondary feedback loop tuning; supports rapid certification with pre-qualified protection set (OTP, OVP, TSP). |
Use Scenario: Patient-facing charging module for portable medical devices (e.g., glucose meters, pulse oximeters) requiring reinforced isolation and low leakage current. IC Role / Device Role / Timing Role: Safety-critical PSR controller enforcing strict slant IV profile to limit touch current to <0.1mA under fault conditions per IEC 60601-1 3.1. Use Value: Integrates transformer saturation protection and bulk-cap open detection-preventing hazardous overheating during component aging or winding faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar primary-side regulated flyback switcher applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP6004DJ-LF-Z | 650V MOSFET, but lacks slant IV control and CPR pin; uses fixed-frequency PWM instead of PFM/AM hybrid | Requires external op-amp and opto-coupler for CV/SV/CC transitions; not certified for shaver-specific IV curves | Prefer when system needs fixed-frequency EMI control and has space for secondary feedback |
| LNK3206P | No integrated MOSFET gate driver; external 650V MOSFET required; no valley-on or VCS jitter features | Higher BOM count and layout complexity; cannot achieve <75mW no-load power without additional circuitry | Prefer for legacy designs already using LNK3xxx platform and needing minimal IC change |
Compared with MP6004DJ-LF-Z and LNK3206P, AP39811AS7-13 uniquely integrates slant IV programmability, valley-on switching, and ±3% VCS jitter-delivering certified shaver compliance, lower EMI, and <75mW no-load power in a single SO-7 package without secondary components.
Availability
AP39811AS7-13 is available at Aetrix Electronics and suitable for shaver charger design, personal care device adapters, and compact medical charging modules requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.
Supply support for AP39811AS7-13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The AP39811AS7-13 belongs to Diodes' PSR Switcher product line, engineered specifically for ultra-compact, low-noise, safety-certified AC/DC converters in personal care and portable medical equipment.
FAQ
What is the purpose of the CPR pin on AP39811AS7-13?
The CPR pin enables slant IV curve programming by accepting a resistor-connected voltage from the FB pin. This creates a load-dependent compensation voltage (VCPR) that decreases output voltage linearly beyond the CV-to-SV inflection point-critical for meeting IEC 62368-1 touch-current limits in shaver chargers without secondary circuitry.
How does AP39811AS7-13 achieve <75mW no-load input power?
It combines ultra-low ICC_OPR (550μA typ), valley-on switching to minimize turn-on loss, and intelligent PFM/AM mode selection that drops switching frequency only to ~10kHz at light loads-while maintaining sufficient burst-mode control to keep standby dissipation below 75mW on 230VAC input with standard 100kΩ VCC startup network.
Does AP39811AS7-13 require an external current-sense resistor?
Yes-AP39811AS7-13 requires an external current-sense resistor (RCS) connected between SOURCE pin and power ground. This resistor converts primary current into a voltage sensed by the internal VCS comparator; typical values range from 0.8Ω to 2.2Ω depending on target peak current and desired VCS_H margin.
Can AP39811AS7-13 be used in non-shaver applications?
Yes-it supports any low-power (<10W), isolated flyback application requiring primary-side regulation, such as IoT sensor power supplies or compact medical chargers. However, its slant IV control, CPR pin, and optimized protection set are specifically validated for shaver-class safety and efficiency requirements per IEC 62368-1 Annex G.
AP39811AS7-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Isolation:
- Isolated
- Internal Switch(s):
- Yes
- Voltage - Breakdown:
- 650V
- Topology:
- Flyback
- Voltage - Start Up:
- 16 V
- Voltage - Supply (Vcc/Vdd):
- 10V ~ 28V
- Duty Cycle:
- -
- Frequency - Switching:
- -
- Power (Watts):
- -
- Fault Protection:
- Current Limiting, Open Loop, Over Load, Over Temperature, Over Voltage
- Control Features:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 7-SO
- Mounting Type:
- Surface Mount
AP39811AS7-13 FAQ
1.How can I place an order for AP39811AS7-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP39811AS7-13 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AP39811AS7-13 reliable?
The price and inventory of AP39811AS7-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP39811AS7-13 is usually 5 days.
3.What payment methods are accepted for AP39811AS7-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP39811AS7-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP39811AS7-13?
AP39811AS7-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP39811AS7-13 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AP39811AS7-13?
For technical support, including AP39811AS7-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP39811AS7-13 requirements.
6.How does Aetrix verify that AP39811AS7-13 is sourced from the original manufacturer or authorized distributors?
All AP39811AS7-13 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AP39811AS7-13 meets industry standards.
7.What is the process for return or replacement of AP39811AS7-13?
All AP39811AS7-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP39811AS7-13, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AP39811AS7-13 part is unused and in its original packaging.
Return procedure for AP39811AS7-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP39811AS7-13 Tags
-
LNK6407D-TL
Power Integrations
-
LNK3204D-TL
Power Integrations
-
SR10LG-G
Microchip Technology
-
TNY285DG-TL
Power Integrations
-
LNK304DN-TL
Power Integrations
-
TNY285KG-TL
Power Integrations
-
LNK3206D-TL
Power Integrations
-
LNK623DG-TL
Power Integrations
-
TNY286PG
Power Integrations
-
LNK624DG-TL
Power Integrations
-
LNK604DG-TL
Power Integrations
-
UCC28704DBVR-1
Texas Instruments
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
