STNRG011ATR - Digital Power Controller for SMPS | STMicroelectronics
MPN: STNRG011ATR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.7587 | $5.76 |
STNRG011ATR Overview
A digital power controller is a type of power management IC that uses digital signal processing to regulate output voltage and current, replacing traditional analog control loops. It sits within the hierarchy of power management ICs, which include linear regulators, switching regulators, and digital power controllers. Digital controllers offer advantages such as programmability, higher efficiency, and better transient response compared to analog counterparts.
Key features of the STNRG011ATR include a programmable switching frequency up to 1 MHz, an integrated high-voltage startup cell that reduces standby power consumption, and a digital control loop that can be configured via an I2C interface. The device also includes protection features such as overcurrent protection, overvoltage protection, and thermal shutdown, ensuring reliable operation in demanding environments.
The STNRG011ATR utilizes a digital control architecture with a dedicated state machine and a configurable PID compensator. This allows designers to optimize the control loop for specific power stage characteristics without changing external components. The integrated high-voltage startup cell enables fast startup and low standby power, making it ideal for applications requiring energy efficiency standards compliance.
Typical applications include AC-DC adapters, USB Power Delivery (USB-PD) chargers, and industrial power supplies. The device's digital control capability allows for precise voltage and current regulation, which is essential for USB-PD applications that require multiple output voltage levels. Its wide input voltage range and high switching frequency support compact transformer designs, reducing overall solution size.
When designing with the STNRG011ATR, ensure proper layout of the high-voltage startup cell and gate drive traces to minimize parasitic inductance. The I2C interface should be isolated from high-voltage areas to prevent noise coupling. Additionally, the thermal pad should be connected to a large copper area for effective heat dissipation.
Drop-in alternatives for STNRG011ATR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
STNRG011A
✅ Drop-In📋 Reference alternative (not in catalog)
NCP1562
⚡ Same Package ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STNRG011ATR Maximum Ratings & Electrical Characteristics
| Input Voltage Range | 8.5 V to 23 V |
| Switching Frequency | Up to 1 MHz |
| Gate Drive Source Current | 0.5 A |
| Gate Drive Sink Current | 0.8 A |
| High-Voltage Startup Cell | Integrated |
| Control Interface | I2C |
| Protection Features | OCP, OVP, Thermal Shutdown |
| Operating Temperature Range | -40C to +125C |
| Package | SO-16 |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Standby Power | Low (with HV startup) |
| Control Topology | Flyback, Buck, Boost |
| Digital Control Core | PID compensator |
STNRG011ATR Pin Configuration
| Pin 1 | VCC — Power supply input |
| Pin 2 | GND — Ground |
| Pin 3 | GATE — Gate drive output |
| Pin 4 | CS — Current sense input |
| Pin 5 | FB — Feedback input |
| Pin 6 | COMP — Compensation pin |
| Pin 7 | SDA — I2C data line |
| Pin 8 | SCL — I2C clock line |
| Pin 9 | HV — High-voltage startup cell input |
| Pin 10 | NC — No connect |
| Pin 11 | NC — No connect |
| Pin 12 | NC — No connect |
| Pin 13 | NC — No connect |
| Pin 14 | NC — No connect |
| Pin 15 | NC — No connect |
| Pin 16 | NC — No connect |
Typical Applications
STNRG011ATR is suitable for 6 applications: AC-DC Adapters, USB-PD Chargers, Industrial Power Supplies, LED Lighting Drivers, Battery Chargers, Server Power Supplies.
AC-DC Adapters
The STNRG011ATR is ideal for AC-DC adapters due to its high-voltage startup cell and digital control, which enable efficient power conversion and low standby power. In a typical adapter, the device regulates the output voltage and current, supporting various load conditions. Its high switching frequency allows for compact transformer designs, reducing the overall size of the adapter. The integrated protection features ensure reliable operation under fault conditions, making it suitable for consumer electronics.
Recommended
USB-PD Chargers
The STNRG011ATR is well-suited for USB-PD chargers, which require precise voltage and current regulation for multiple output levels. The digital control core allows for programmable output profiles, enabling compliance with USB-PD specifications. The high-voltage startup cell reduces standby power, meeting energy efficiency requirements. The device's high switching frequency supports small magnetic components, making it ideal for compact charger designs. Protection features such as OCP and OVP ensure safe operation during charging.
Recommended
Industrial Power Supplies
In industrial power supplies, the STNRG011ATR provides reliable and efficient power conversion for various loads. Its wide input voltage range and high switching frequency support diverse applications, from factory automation to process control. The digital control loop enables precise regulation, essential for sensitive industrial equipment. The device's robust protection features, including thermal shutdown, ensure reliable operation in harsh environments. The SO-16 package is suitable for space-constrained industrial designs.
Recommended
LED Lighting Drivers
The STNRG011ATR can be used in LED lighting drivers to provide constant current regulation, ensuring consistent brightness. Its digital control allows for dimming capabilities and precise current control, which is essential for LED applications. The high-voltage startup cell enables efficient startup and low standby power, beneficial for lighting systems with standby modes. The device's high switching frequency supports compact driver designs, making it suitable for LED bulbs and fixtures.
Recommended
Battery Chargers
The STNRG011ATR is suitable for battery chargers, providing precise voltage and current control for various battery chemistries. Its digital control loop allows for programmable charging profiles, optimizing charging efficiency and battery life. The high-voltage startup cell reduces standby power, making it ideal for chargers that remain connected to the mains. Protection features such as OCP and OVP ensure safe charging, preventing damage to the battery and the charger.
Recommended
Server Power Supplies
In server power supplies, the STNRG011ATR provides efficient and reliable power conversion for high-density computing environments. Its high switching frequency enables compact power stages, saving valuable board space. The digital control loop ensures tight voltage regulation, critical for server processors and memory. The device's protection features, including thermal shutdown, enhance system reliability. The wide input voltage range supports various AC and DC input configurations.
Recommended
Recommended Products Summary
Engineering reference data for STNRG011ATR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STNRG011A | NCP1562 |
|---|---|---|---|
| Package | SO-16 | SO-16 | SOIC-16 |
| Brand | STMicroelectronics | STMicroelectronics | onsemi |
Key Differentiators
- Integrated high-voltage startup cell (vs NCP1562)
- I2C control interface (vs NCP1562)
- Wide input voltage range (vs NCP1562)
Design Notes
Place the high-voltage startup cell input (HV pin) away from sensitive analog traces to prevent noise coupling. Use a dedicated ground plane for the power stage and keep the gate drive trace short and wide to minimize parasitic inductance.
The SO-16 package has a thermal resistance that requires adequate copper area for heat dissipation. For high-power applications, ensure the PCB has a large ground plane and consider adding thermal vias under the device to improve heat transfer.
Do not exceed the maximum input voltage of 23V. Ensure the I2C lines are properly pulled up and isolated from high-voltage areas. The compensation pin (COMP) should be connected to a suitable RC network as specified in the datasheet to ensure loop stability.
Compliance Information
RoHS compliance confirmed from STMicroelectronics product page. Other compliance data not available in provided sources.
