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Diodes Incorporated AP3108LSS9-13
- Part No.:
- AP3108LSS9-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Power Supply Controllers, Monitors
- Package:
- 10-SOP (0.154", 3.90mm Width), 9 Leads
- Datasheet:
-
AP3108LSS9-13.pdf
- Description:
- ACDC SINGLE ENDED CONT SSOP-9 T&
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
AP3108LSS9-13 from Diodes Incorporated is a current-mode PWM controller for offline AC-DC power supplies, delivering ultra-low standby power (<15 μA startup current), green-mode frequency modulation (22–65 kHz), and integrated high-voltage startup (700 V HV pin) with X-CAP discharge. It enables constant-voltage/constant-current (CV/CC) regulation when paired with AP4320 secondary-side controller in USB PD adapters and open-frame SMPS.
For engineers reviewing the AP3108LSS9-13 datasheet, AP3108LSS9-13 pinout, AP3108LSS9-13 application, or AP3108LSS9-13 equivalent, key selection criteria include its 2.5 V/V FB-to-SENSE gain ratio, 2.5 V primary OCP reference, 75% max duty cycle, VCC LDO operation across 10–50 V VCC_IN, and SSOP-9 (Type CJ) package with HV pin for line sensing and auto-discharge.
Technical Context
The AP3108LSS9-13 implements current-mode control with internal slope compensation and 250 ns leading-edge blanking on the SENSE pin. Its oscillator supports fixed-frequency (65 kHz) operation under heavy load and green-mode frequency foldback down to 22 kHz at light load-clamped to avoid audible noise.
It integrates an HV-startup circuit with dual charge currents (0.2 mA low-VCC, 1.8 mA high-VCC) and fault-mode current (95 µA), plus X-CAP discharge via HV pin with 1.7 mA typical sink current. The VCC LDO accepts 10–50 V input and regulates to 9.8–21 V depending on VCC_IN, enabling wide-output-voltage designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max switching frequency | 65 kHz - sets upper bound for transformer size and EMI filter design in 230 VAC systems |
| Green mode min frequency | 22 kHz - clamped lower limit prevents acoustic noise in no-load/standby operation |
| VCC LDO input range | 10–50 V VCC_IN - supports auxiliary winding designs across 5 V to 24 V output rails |
| Primary OCP reference | 2.50 V - precise internal reference for constant-output-current (COCP) control independent of line voltage |
| HV pin rating | 700 V - enables direct connection to rectified AC line for startup and X-CAP discharge without external components |
| FB-to-SENSE gain (KFB-CS) | 3.0 V/V (typ) - defines opto-coupler feedback scaling for accurate CV/CC crossover in dual-loop systems |
| Startup current (IST) | 1.5 μA (typ) - enables <30 mW no-load power in 65 W adapter designs meeting DOE VI/EU CoC Tier 2 |
Pinout & Package
AP3108LSS9-13 is housed in a lead-free, RoHS-compliant SSOP-9 (Type CJ) package with 0.65 mm pitch and exposed thermal pad (not electrically connected). Pin 1 is marked by a dot; top-view orientation follows JEDEC MO-187.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CTRL | Programmable protection input | Accepts external OTP or hiccup latch-off signal; low-threshold (1.0 V) and high-threshold (3.0 V) enable dual-level fault response |
| 2 FB | Opto-coupler feedback input | Receives error voltage from secondary-side controller; 20 kΩ input impedance enables stable loop compensation |
| 3 DEM | De-magnetization detection | Samples secondary rectifier conduction time (tONS) to compute real-time output current in COCP mode |
| 4 VCC_IN | LDO input supply | Wide-range (10–50 V) input to internal regulator; eliminates need for separate bias winding in multi-output designs |
| 5 GND | Signal ground reference | Common return for control logic, gate driver, and sense circuits; isolated from power ground in layout |
| 6 GATE | MOSFET gate driver output | 500 mA peak sink/source drives 1 Ω gate resistance with 150 ns rise time; clamped at 10.5 V to protect MOSFET gate oxide |
| 7 VCC | Internal supply rail | Regulated output of LDO (9.8–21 V); powers all internal blocks and provides bias for gate driver |
| 8 SENSE | Primary current sense input | Monitors RCS voltage with 250 ns LEB; 0.95 V max threshold prevents false triggering during transients |
| 9 HV | High-voltage line sense & startup | 700 V rated input senses AC line presence, initiates startup current, and discharges X-CAPs automatically at AC removal |
Key Features
| Feature | Design Value |
|---|---|
| Non-audible green mode | Frequency foldback clamped at 22 kHz avoids mechanical resonance in transformers and capacitors |
| X-CAP discharge function | 1.7 mA internal sink replaces 1 MΩ/0.5 W bleed resistors, cutting standby loss by ~15 mW in 65 W adapters |
| VCC maintain mode | 8.5 V UVLO hysteresis sustains operation during brown-out dips without restart glitches |
| Primary constant OCP (COCP) | Real-time Io = VREF × NP/(RCS × NS × KCC) enables precise short-circuit current limiting without secondary sensing |
| Line-compensated current sampling | Adjustable R1-based compensation corrects VCSM error caused by MOSFET turn-off delay across 90–264 VAC input range |
Applications
| USB-C PD Adapters | Industrial Open-Frame PSUs |
|---|---|
|
Use Scenario: 20–65 W single-port USB-C PD charger with 5/9/15/20 V output profiles and <30 mW no-load consumption. IC Role / Device Role / Timing Role: Primary-side PWM controller coordinating with AP4320 secondary-side IC to execute dynamic CV/CC switchover and burst-mode zero-power standby. Use Value: Enables DOE VI compliance via 1.5 μA startup current, 22 kHz green-mode floor, and X-CAP discharge eliminating external bleed resistors. |
Use Scenario: 48 V/3 A industrial power supply for PLC I/O modules requiring wide-input (85–264 VAC), high-reliability, and overtemperature recovery. IC Role / Device Role / Timing Role: Core PWM controller implementing brown-in/out protection (91–100 V thresholds), programmable external OTP, and soft-start with 3.8 ms ramp. Use Value: Delivers 85 °C continuous operation with 150 °C junction limit, VCC UVLO hysteresis preventing cycling during line sags, and FOCP/SSCP fault latching. |
| Smart Home Wall Adapters | LED Driver Power Stages |
|
Use Scenario: Compact 12 W wall plug-in adapter for smart speakers and IoT hubs, targeting <10 mm height and <150 mW standby. IC Role / Device Role / Timing Role: High-density PWM controller using SSOP-9 package and integrated HV startup to eliminate start-up resistor and reduce BOM count by 2 components. Use Value: Achieves 22 kHz minimum frequency and burst-mode VBURST = 1.2 V to suppress audible noise while maintaining <100 mW average standby power. |
Use Scenario: Constant-current LED driver for commercial lighting (24–48 V, 0.7 A) with dimming interface and surge immunity. IC Role / Device Role / Timing Role: Primary-side controller executing SOVP (4.8 V) and SUVP (0.57 V) on DEM pin to detect LED string open/short faults within 25 ms. Use Value: Provides precise 75 mV DEM threshold and 20–30 ms SUVP blank time to reject startup transients while ensuring fast fault shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP3106LSS9-13 | Lower max frequency (50 kHz), no X-CAP discharge, 3.5 V FB OCP threshold vs. 4.2 V | Lacks green-mode frequency foldback and HV-driven discharge; suited for cost-sensitive non-USB adapters | Select only if 50 kHz operation and absence of X-CAP discharge are acceptable in target design |
| ICE2QS03G | Fixed 65 kHz, no integrated HV startup, requires external start-up resistor and X-CAP bleed network | Higher BOM count and standby power; lacks line-compensated COCP and DEM-based SUVP/SOVP | Choose only when legacy ICE2 platform compatibility or specific Infineon qualification is required |
Compared with AP3106LSS9-13 and ICE2QS03G, the AP3108LSS9-13 uniquely combines X-CAP discharge, line-compensated COCP, and 22 kHz green-mode floor-enabling <30 mW standby and precise short-circuit current limiting without secondary sensing or external components.
Availability
AP3108LSS9-13 is available at Aetrix Electronics and suitable for USB-C PD adapters, industrial open-frame power supplies, and smart home wall chargers requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for AP3108LSS9-13 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 ICs for power management, signal integrity, and connectivity applications.
The AP3108LSS9-13 belongs to Diodes' high-efficiency AC-DC PWM controller product line, engineered specifically for ultra-low-standby, green-mode offline power supplies targeting USB PD, industrial SMPS, and energy-efficient consumer adapters.
FAQ
What is the purpose of the HV pin on the AP3108LSS9-13?
The HV pin serves three verified functions: (1) provides high-voltage startup current (0.2–1.8 mA) directly from rectified AC line, eliminating external start-up resistors; (2) senses AC line presence to trigger automatic X-CAP discharge (1.7 mA sink) upon AC removal; and (3) monitors line voltage for brown-in/out protection with 91–100 V thresholds. It is rated for 700 V DC and requires no external clamping.
How does the AP3108LSS9-13 achieve constant output current (COCP) without secondary current sensing?
The AP3108LSS9-13 calculates real-time output current using the product of sampled primary current (VCSM at 50% GATE on-time) and secondary conduction time (tONS/t derived from DEM pin), held constant at VREF = 2.50 V. This primary-side COCP method-combined with line-compensation via external R1-achieves ±5% current accuracy across 90–264 VAC input without secondary shunt or Hall sensors.
Can the AP3108LSS9-13 be used in designs requiring AEC-Q100 qualification?
No-the AP3108LSS9-13 is not AEC-Q100 qualified. Diodes Incorporated explicitly states in the datasheet that automotive-grade versions require specific change control, PPAP capability, and IATF 16949 manufacturing; this part is intended for industrial and consumer power supplies only. For automotive applications, contact Diodes directly for qualified alternatives like the AP3108Q series.
What is the role of the DEM pin beyond de-magnetization detection?
The DEM pin performs two critical roles: (1) detects transformer demagnetization to determine tONS for COCP calculation; and (2) enables secondary-side overvoltage (SOVP, 4.8 V threshold) and undervoltage (SUVP, 0.57 V threshold) protection with 25 ms blank time after startup. Its 75 mV internal threshold ensures reliable detection even with low-turn-ratio auxiliary windings.
AP3108LSS9-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 10-SOP (0.154", 3.90mm Width), 9 Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- Switching AC-DC Adapter/Charger
- Voltage - Input:
- 10V ~ 50V
- Voltage - Supply:
- 10V ~ 28V
- Current - Supply:
- 1.7 mA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-SSOP
AP3108LSS9-13 FAQ
1.How can I place an order for AP3108LSS9-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3108LSS9-13 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 AP3108LSS9-13 reliable?
The price and inventory of AP3108LSS9-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3108LSS9-13 is usually 5 days.
3.What payment methods are accepted for AP3108LSS9-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3108LSS9-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3108LSS9-13?
AP3108LSS9-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3108LSS9-13 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 AP3108LSS9-13?
For technical support, including AP3108LSS9-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3108LSS9-13 requirements.
6.How does Aetrix verify that AP3108LSS9-13 is sourced from the original manufacturer or authorized distributors?
All AP3108LSS9-13 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 AP3108LSS9-13 meets industry standards.
7.What is the process for return or replacement of AP3108LSS9-13?
All AP3108LSS9-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP3108LSS9-13, 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 AP3108LSS9-13 part is unused and in its original packaging.
Return procedure for AP3108LSS9-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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