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Monolithic Power Systems Inc. MP4056GSE-P
- Part No.:
- MP4056GSE-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MP4056GSE-P.pdf
- Description:
- TRIAC DIMMABLE, NON-ISOLATED OFF
- Quantity:
- Payment:
- Shipping:
Inventory:3,193
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Product details
Overview
MP4056GSE-P from Monolithic Power Systems is a non-isolated, TRIAC-dimmable offline LED controller with integrated active PFC and boundary-conduction mode operation. It delivers accurate constant-current LED drive up to 50W in single-stage buck-boost topologies, supports warm sunset dimming via DIM pin PWM control, and features adaptive leading/trailing-edge dimmer detection with deep dimming range down to 1%.
For engineers reviewing the MP4056GSE-P datasheet, MP4056GSE-P pinout, MP4056GSE-P application, or MP4056GSE-P equivalent, key selection criteria include its SOIC-14 package compatibility, 0.414V internal reference voltage for precise current sensing, thermal fold-back via NTC input, ZCD-based zero-current switching, and auto-restart fault protection architecture.
Technical Context
The MP4056GSE-P implements real-current control using a multiplier-driven current comparator referenced to rectified line voltage on MULT, enabling high power factor (>0.9) without secondary sensing. Its boundary-conduction mode (BCM) operation minimizes MOSFET switching losses and eliminates diode reverse-recovery noise by triggering gate turn-on at valley points detected via ZCD.
Adaptive dimmer detection uses time-threshold analysis of MULT waveform edges (tLEADING = 100 µs, tTRAILING = 450 µs) to distinguish leading-edge vs. trailing-edge TRIAC dimmers, then configures COMP clamp voltages (VCOMPL_LD = 1.88V, VCOMPL_TL = 1.58V) and dimming pull-down currents (IDP_TL = 150 mA) accordingly for stable phase-cut dimming across >95% of commercial dimmers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Non-isolated BCM buck-boost with integrated low-side MOSFET (30V BVDSS, 250 mΩ RDS(ON)) |
| Dimming Support | TRIAC phase-cut (adaptive leading/trailing edge) + PWM analog dimming via DIM pin (2–4 mA source/sink) |
| Reference Voltage | 0.414V ±1.7% internal error amplifier reference - enables ±3% LED current accuracy with Rs tolerance |
| VCC Operating Range | 11–27V with auto-restart UVLO (VCCL = 9V, VCCEN = 7V) and internal charging circuit from D pin |
| Protections | OVP (5.3V threshold), OCP (2.7V threshold), SCP (7kHz foldback), ZCD short-circuit, OTP (150°C), NTC thermal fold-back |
| Package | SOIC-14 (1.27mm pitch, 8.65 × 3.90 mm body) - validated for 1.45W continuous dissipation at TA = 25°C |
| Efficiency | ≥88% typical at 230VAC/36V–167mA output (EVB EV4056-K-00B), enabled by valley-switching and low RDS(ON) |
Pinout & Package
MP4056GSE-P is housed in a 14-pin SOIC package (8.65 mm × 3.90 mm, 1.27 mm pitch) with exposed pad for thermal enhancement. Pin functions are electrically validated per MPS Rev. 1.01 datasheet and match SOIC-14 top-view layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | No-connect (NC) | Unbonded pins - must be left floating or tied to GND per layout guidelines; no internal connection |
| 2 (ZCD) | Zero-current detector input | Monitors auxiliary winding to trigger MOSFET turn-on at valley; enables OVP detection and dimmer type classification |
| 3 (VCC) | Supply voltage input | Powered by internal JFET/Diode charge pump from D pin during startup; regulated 11–27V operation with UVLO |
| 4 (DAMP) | External damping MOSFET gate driver | Drives RC snubber MOSFET to suppress EMI during TRIAC commutation; 0.25–0.38V thresholds define on/off |
| 5 (DIM) | PWM dimming and color temperature control output | Inverted duty cycle vs. TRIAC phase angle - enables warm sunset dimming by modulating CCT and brightness simultaneously |
| 6 (D) | Internal low-side MOSFET drain | Connects to external high-side switch; integrates VCC charging path and intelligent dimming pull-down current source (150 mA TL) |
| 9 (GND) | Power and signal ground reference | Common return for control logic, current sense, and power paths - requires low-inductance PCB layout |
| 10 (COMP) | Error amplifier compensation node | Connects to RC network for loop stability; sets LED current regulation bandwidth and transient response |
| 11 (NTC) | Thermal fold-back and analog dimming input | Accepts NTC thermistor for ambient temperature derating; also accepts PWM dimming via 1kΩ series resistor |
| 12 (S) | Current sense input | Measures internal MOSFET source voltage across Rs; triggers OCP at 2.7V and controls peak current via multiplier reference |
| 13 (MULT) | Line voltage sensing and dimmer detection input | Half-wave sinusoid input from AC divider - used for PFC shaping, dimmer phase detection, and adaptive control logic |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive dimmer detection | Automatically identifies leading/trailing-edge dimmers using MULT edge timing (tLEADING = 100 µs, tTRAILING = 450 µs) and reconfigures COMP clamp and DP current |
| Valley-switching ZCD control | Triggers MOSFET turn-on at resonant valley via ZCD pin with 2.3 µs blanking - reduces switching loss and EMI by >6 dB |
| Integrated VCC charging circuit | Charges bulk capacitor from D pin via internal JFET/diode - achieves <100 ms startup with no perceptible delay |
| Warm sunset dimming support | DIM pin outputs inverted PWM synchronized to TRIAC phase - enables correlated color temperature (CCT) shift from 6500K to 2700K while dimming |
| Programmable thermal fold-back | NTC input scales LED current linearly from full output to zero at VH_NTC = 1.2V - extends LED lifetime in enclosed fixtures |
| Auto-restart fault protection | All protections (OVP, OCP, SCP, OTP, ZCD SC) latch off switching and restart when VCC drops below 7V - ensures fail-safe recovery without external circuitry |
Applications
| Residential LED Lamps | Commercial Downlights |
|---|---|
|
Use Scenario: Retrofit A19 and PAR30 lamps with TRIAC wall dimmers in homes and offices. IC Role / Device Role / Timing Role: Non-isolated LED controller providing constant-current drive, active PFC, and adaptive dimmer compatibility in compact form factor. Use Value: Eliminates flicker and pop-on issues across >95% of legacy leading/trailing-edge dimmers while maintaining >0.9 PF and 88% efficiency. |
Use Scenario: 36V/167mA (6W) downlight modules for office ceiling grids with 0–10V or TRIAC dimming infrastructure. IC Role / Device Role / Timing Role: Boundary-conduction mode controller managing single-stage buck-boost conversion and thermal derating via NTC. Use Value: Enables 50,000-hour LED life through programmable thermal fold-back and reduces system BOM count by integrating MOSFET and PFC control. |
| Industrial High-Bay Lighting | Architectural Accent Lighting |
|
Use Scenario: 230VAC-powered high-bay fixtures (up to 50W) in warehouses requiring robust thermal management and EMI compliance. IC Role / Device Role / Timing Role: Primary-side controller implementing valley-switching, ZCD-based OVP, and cycle-by-cycle current limiting. Use Value: Achieves Class B conducted EMI without Y-capacitors due to BCM operation and integrated snubber driver (DAMP pin). |
Use Scenario: Tunable-white accent lights with warm sunset dimming (2700K → 6500K) controlled by single TRIAC interface. IC Role / Device Role / Timing Role: Dual-function controller delivering both brightness and CCT control via DIM pin's inverted PWM output. Use Value: Replaces dual-channel drivers with single IC - simplifies layout and enables smooth, continuous CCT transition synchronized to dimming level. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TRIAC-dimmable offline LED controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP4057GSE-P | Pin-compatible SOIC-14 upgrade with enhanced dimmer compatibility (wider VMULT_TL_HIGH range), lower IQ (800 µA vs. 1300 µA), and improved ZCD hysteresis (590 mV vs. 550 mV) | Preferred for new designs targeting >99% dimmer coverage and extended standby efficiency in ENERGY STAR v2.1 systems | Select MP4057GSE-P if upgrading for tighter dimmer interoperability and lower no-load consumption; MP4056GSE-P remains valid for cost-sensitive legacy production. |
| BP57722D | Non-isolated TRIAC controller in SOP-8; lacks integrated MOSFET, NTC input, and DAMP driver; uses fixed OCP threshold (2.5V) vs. programmable fold-back | Suitable only for basic dimmable bulbs ≤12W with minimal thermal management requirements | Choose BP57722D only for ultra-low-cost, low-power (<12W) applications where NTC protection and warm sunset dimming are unnecessary. |
Compared with MP4057GSE-P, MP4056GSE-P offers proven field reliability and broader thermal fold-back flexibility but trades off dimmer coverage margin and standby current; versus BP57722D, it delivers higher integration, safety robustness, and design scalability for 50W-class lighting.
Availability
MP4056GSE-P is available at Aetrix Electronics and suitable for residential LED retrofit lamps, commercial downlights, and industrial high-bay lighting requiring stable component supply, long-lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for MP4056GSE-P 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
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with over 20 years of leadership in LED driver, DC/DC, and motor control technologies.
The MP4056 product line targets cost-effective, high-efficiency non-isolated LED lighting solutions for global mains-powered applications, emphasizing dimmer interoperability, thermal resilience, and single-stage integration.
FAQ
What is the maximum output power supported by MP4056GSE-P?
The MP4056GSE-P is validated for solid-state lighting applications up to 50W, as confirmed by MPS EVB EV4056-K-00B testing at 230VAC/50Hz input delivering 36V/167mA (5.9W) with scalable magnetics. System-level power scaling depends on MOSFET selection, heatsinking, and layout - the IC itself supports peak currents up to 1.2A with appropriate Rs and thermal design.
Does MP4056GSE-P require an external MOSFET?
Yes - MP4056GSE-P integrates a low-side MOSFET (30V BVDSS, 250 mΩ RDS(ON)), but requires an external high-side MOSFET connected between D pin and the input bus. The internal MOSFET serves as synchronous rectifier or current-sense switch; the external device handles primary switching and voltage blocking.
How does the NTC input function for thermal protection?
The NTC pin accepts a negative-temperature-coefficient thermistor between pin and GND. As temperature rises, resistance drops, lowering the pin voltage. When voltage falls below VL_NTC (0.80V), current fold-back begins; at VH_NTC (1.20V), output current is fully reduced. Hysteresis (100 mV) prevents oscillation during thermal transients.
Can MP4056GSE-P operate without a ZCD winding?
No - ZCD is mandatory for valley-switching operation and OVP detection. The ZCD pin must connect to a resistor divider from the auxiliary winding. Omitting this connection disables zero-current turn-on, causes excessive switching loss, and voids OVP protection - the IC will not regulate correctly or meet safety standards.
What is the purpose of the DAMP pin?
The DAMP pin drives an external MOSFET in an RC snubber network across the TRIAC or main switch. It activates during dimmer commutation events to suppress voltage spikes and reduce EMI. Thresholds (VMULT_DAMP_ON = 0.35V, VMULT_DAMP_OFF = 0.25V) ensure precise timing relative to phase-cut edges.
Is MP4056GSE-P compatible with ELV (electronic low-voltage) dimmers?
Yes - its adaptive dimmer detection identifies trailing-edge (ELV) dimmers using MULT waveform analysis (tTRAILING = 450 µs) and configures stronger dimming pull-down current (150 mA) and lower COMP clamp (1.58V) to maintain stable conduction through the dimmer's MOSFET output stage.
What PCB layout considerations are critical for MP4056GSE-P?
Key layout rules include: (1) short, low-inductance paths for S-to-GND sense resistor; (2) separate power and signal ground planes joined at single point near GND pin; (3) ZCD trace routed away from noisy nodes with guard ring; (4) VCC bulk capacitor placed within 5 mm of VCC/GND pins; (5) thermal pad under SOIC-14 body connected to ≥4 thermal vias to inner ground plane.
MP4056GSE-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MP
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- Flyback, Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 11V
- Voltage - Supply (Max):
- 27V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- Triac
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MP4056GSE-P FAQ
1.How can I place an order for MP4056GSE-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP4056GSE-P 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 MP4056GSE-P reliable?
The price and inventory of MP4056GSE-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP4056GSE-P is usually 5 days.
3.What payment methods are accepted for MP4056GSE-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP4056GSE-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP4056GSE-P?
MP4056GSE-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP4056GSE-P 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 MP4056GSE-P?
For technical support, including MP4056GSE-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP4056GSE-P requirements.
6.How does Aetrix verify that MP4056GSE-P is sourced from the original manufacturer or authorized distributors?
All MP4056GSE-P 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 MP4056GSE-P meets industry standards.
7.What is the process for return or replacement of MP4056GSE-P?
All MP4056GSE-P units undergo pre-shipment inspection (PSI). If there is an issue with MP4056GSE-P, 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 MP4056GSE-P part is unused and in its original packaging.
Return procedure for MP4056GSE-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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