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Diodes Incorporated AP3106MTR-G1
- Part No.:
- AP3106MTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Datasheet:
-
AP3106MTR-G1.pdf
- Description:
- IC OFFLINE SWITCH FLYBACK 7SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP3106MTR-G1 from Diodes Incorporated is a high-voltage start-up, current-mode PWM controller for offline AC/DC flyback converters, featuring programmable switching frequency (65 kHz typ.), green-mode light-load frequency reduction (down to ~28 kHz), 0.85 V current-sense threshold, and integrated HV startup circuit (2 mA typ. at 400 V). It delivers system-level protection including cycle-by-cycle OCP, VCC OVP (28 V), OTP (140 °C), brownout, and short-circuit protection in SO-7 package for LCD TV power supplies.
For engineers reviewing the AP3106MTR-G1 datasheet, AP3106MTR-G1 pinout, AP3106MTR-G1 application, or AP3106MTR-G1 equivalent, key selection considerations include its HV pin (600 V max) for direct bulk-capacitor startup, adaptive green-mode behavior below 26 kHz threshold to avoid acoustic noise, FB pin open-loop voltage (5.4 V typ.), and SO-7 thermal resistance (186 °C/W) for compact adapter designs.
Technical Context
The AP3106MTR-G1 implements current-mode control with internal slope compensation and leading-edge blanking (250 ns typ.) on the SENSE pin to suppress MOSFET switching noise. Its oscillator integrates frequency dithering (±6% center) to reduce EMI without external filters.
Green-mode operation dynamically lowers switching frequency under light load via FB voltage feedback, while maintaining minimum 26 kHz operation to prevent audible noise. Protection logic includes latched OTP shutdown, de-latch VCC reset (5.7 V typ.), and dual-delay timing blocks for OLP (35 ms) and brownout (45 ms).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 65 kHz typical (RI = 100 kΩ); externally programmable and trimmed for stable regulation across line/load. |
| Current Sense Threshold | 0.85 V typical; sets peak primary current limit with 2.5–3.5 V/V input-to-sense ratio for accurate OCP. |
| VCC UVLO Threshold | 16 V turn-on / 8.6 V turn-off; enables reliable startup from HV pin and low-power disable during brownout. |
| Green Mode Frequency | ~28 kHz at light load; reduces switching losses while staying above 26 kHz to eliminate audible transformer whine. |
| Thermal Shutdown | 140 °C with 20 °C hysteresis; provides robust overtemperature protection with automatic recovery after cooldown. |
| High-Voltage Pin Rating | 600 V absolute max; allows direct connection to rectified AC line for self-biased startup without auxiliary winding. |
| Gate Drive Current | ±500 mA peak output; sufficient to drive 7N60-class MOSFETs with fast rise/fall times (250 ns / 50 ns typ.). |
Pinout & Package
AP3106MTR-G1 is housed in a compact SO-7 package (6.2 mm × 4.0 mm × 1.75 mm) with exposed pad for thermal relief and 186 °C/W junction-to-ambient thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RI | Oscillator bias current input | Sets nominal switching frequency via external resistor; also controls soft-start time (4 ms typ.) and green-mode transition point. |
| 2 - FB | Voltage feedback input | Regulates output via optocoupler feedback; 2.1 V green-mode entry threshold and 1.15 V burst-mode trigger enable ultra-low standby power. |
| 3 - SENSE | Primary current sensing input | Monitors MOSFET source current through shunt; includes 250 ns LEB to reject switching spikes and ensure stable current-mode operation. |
| 4 - GND | Power and signal reference ground | Common return for internal bias, gate driver, and protection comparators; requires low-impedance PCB layout to avoid noise coupling. |
| 5 - GATE | MOSFET gate driver output | Push-pull driver capable of ±500 mA; clamped at 17.5 V to protect external MOSFET gate oxide during transients. |
| 6 - VCC | Internal supply rail | Powered initially by HV pin; regulated internally to 15.5–19.5 V clamp; UVLO ensures safe restart after brownout or overvoltage events. |
| 7 - HV | High-voltage startup input | Connects directly to bulk capacitor (+) rail; supplies 2 mA startup current up to 400 V, then disables to minimize no-load loss. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated HV startup circuit | Eliminates need for auxiliary winding or startup resistor network, reducing BOM count and no-load power by >30%. |
| Frequency dithering (±6%) | Spreads EMI energy across spectrum, enabling compliance with CISPR-22 Class B limits using minimal input filtering. |
| Adaptive green mode | Reduces switching frequency linearly under light load while maintaining >26 kHz to prevent audible transformer noise. |
| Comprehensive fault protection | Includes latched OTP, VCC OVP (28 V), brownout (105 V turn-on), COLP, SCP, and pin-fault detection (RI floating/short). |
| SO-7 thermal performance | 186 °C/W θJA enables full 550 mW dissipation at +85 °C ambient without heatsink in space-constrained adapters. |
Applications
| AC/DC Adaptor for Notebook | LCD Monitor Power Supply |
|---|---|
|
Use Scenario: 19 V/3.42 A universal input (90–264 VAC) flyback adaptor with <300 mW no-load consumption. IC Role / Device Role / Timing Role: Primary-side PWM controller managing MOSFET switching, feedback regulation via optocoupler, and green-mode frequency scaling. Use Value: HV pin startup eliminates auxiliary winding; 26 kHz minimum frequency prevents audible noise during video playback idle states. |
Use Scenario: 24 V/5 A open-frame power supply for 27-inch LCD monitor with dynamic dimming and standby wake-up. IC Role / Device Role / Timing Role: Current-mode controller executing constant-voltage regulation, burst-mode operation below 10% load, and thermal foldback. Use Value: Integrated OTP and VCC OVP ensure reliability during thermal stress; SO-7 footprint supports high-density PCB layout. |
| TV Standby Power Supply | Set-Top Box Auxiliary Rail |
|
Use Scenario: Dual-output (5 V/1 A + 3.3 V/0.5 A) standby converter meeting ENERGY STAR® Tier 2 <0.5 W consumption. IC Role / Device Role / Timing Role: Green-mode PWM controller regulating main 5 V rail and enabling zero-crossing synchronized burst mode for lowest standby loss. Use Value: FB pin burst threshold (1.15 V) and soft driving reduce EMI during standby; 15 µA start-up current minimizes leakage loss. |
Use Scenario: Isolated 3.3 V auxiliary rail powering USB host, IR receiver, and Ethernet PHY in cable set-top box. IC Role / Device Role / Timing Role: Flyback controller delivering precise 3.3 V regulation with tight line/load transient response via current-mode control. Use Value: Internal slope compensation and LEB ensure stable operation with wide input range (90–264 VAC) and variable output loading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP3125MTR-G1 | Same family; higher VCC OVP (30 V), tighter frequency tolerance (±3%), and improved brownout hysteresis (8 V vs. 5 V). | Preferred for 24 V output designs requiring enhanced VCC margin and tighter regulation under wide-line conditions. | Select when upgrading legacy AP3106 designs needing higher VCC OVP headroom and reduced frequency drift over temperature. |
| ICE2QS03G | Infineon quasi-resonant controller; lacks HV pin, requires auxiliary winding; fixed 65 kHz frequency; no frequency dithering. | Suitable for cost-sensitive, non-green-mode designs where EMI filtering budget allows larger input chokes. | Choose only if existing board uses auxiliary winding and design does not require HV startup or adaptive green mode. |
Compared with AP3125MTR-G1, the AP3106MTR-G1 offers lower start-up current (15 µA vs. 20 µA) and wider green-mode frequency range (28–65 kHz vs. 30–65 kHz), while ICE2QS03G requires external startup and lacks dithering-making AP3106 optimal for compact, low-noise, ultra-low-standby AC/DC systems.
Availability
AP3106MTR-G1 is available at Aetrix Electronics and suitable for LCD monitor power supplies, AC/DC adaptors, and open-frame switching power supplies requiring stable component supply, RoHS-compliant packaging, and long-term industrial lifecycle support.
Supply support for AP3106MTR-G1 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 manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and protection solutions for consumer, industrial, and computing markets.
The AP3106 belongs to Diodes' high-voltage green-mode PWM controller product line, designed specifically for energy-efficient offline flyback converters targeting ENERGY STAR® and EU CoC Tier 2 compliance.
FAQ
What is the purpose of the HV pin on the AP3106MTR-G1?
The HV pin connects directly to the positive terminal of the bulk capacitor to supply startup current (2 mA typ. at 400 V) before VCC reaches UVLO turn-on threshold (16 V). Once VCC is stable, the HV circuit disables automatically to minimize no-load power loss-eliminating the need for an external startup resistor or auxiliary winding.
How does the AP3106MTR-G1 achieve ultra-low standby power?
It combines adaptive green-mode frequency reduction (down to ~28 kHz), burst-mode operation below 1.15 V FB voltage, and ultra-low start-up current (15 µA max). These features reduce switching and gate-drive losses at light loads while maintaining >26 kHz operation to avoid audible noise-enabling sub-300 mW no-load consumption in optimized designs.
Can the AP3106MTR-G1 be used in continuous conduction mode (CCM) flyback designs?
Yes-the AP3106MTR-G1 supports both discontinuous (DCM) and continuous conduction mode flyback topologies. Its internal slope compensation and current-mode architecture ensure stable operation across CCM boundary conditions, provided external compensation networks are tuned per application note DN05011.
What protection features are latched versus auto-recoverable?
Over-temperature protection (OTP) and over-voltage protection on VCC (VOVP) are latched-requiring VCC discharge below UVLO off-threshold (8.6 V) to reset. Brownout, OLP, and short-circuit protection use timer-based auto-recovery (35 ms delay), allowing graceful restart after transient faults without manual intervention.
AP3106MTR-G1 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:
- Obsolete
- Output Isolation:
- Isolated
- Internal Switch(s):
- No
- Voltage - Breakdown:
- -
- Topology:
- Flyback
- Voltage - Start Up:
- 16 V
- Voltage - Supply (Vcc/Vdd):
- 10V ~ 25V
- Duty Cycle:
- 75%
- Frequency - Switching:
- 65kHz
- Power (Watts):
- -
- Fault Protection:
- Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit
- Control Features:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 7-SO
- Mounting Type:
- Surface Mount
AP3106MTR-G1 FAQ
1.How can I place an order for AP3106MTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3106MTR-G1 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 AP3106MTR-G1 reliable?
The price and inventory of AP3106MTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3106MTR-G1 is usually 5 days.
3.What payment methods are accepted for AP3106MTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3106MTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3106MTR-G1?
AP3106MTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3106MTR-G1 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 AP3106MTR-G1?
For technical support, including AP3106MTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3106MTR-G1 requirements.
6.How does Aetrix verify that AP3106MTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP3106MTR-G1 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 AP3106MTR-G1 meets industry standards.
7.What is the process for return or replacement of AP3106MTR-G1?
All AP3106MTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3106MTR-G1, 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 AP3106MTR-G1 part is unused and in its original packaging.
Return procedure for AP3106MTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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