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Monolithic Power Systems Inc. MP4032-2GS-Z
- Part No.:
- MP4032-2GS-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Datasheet:
-
MP4032-2GS-Z.pdf
- Description:
- IC LED DRIVER OFFL TRIAC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,797
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Product details
Overview
MP4032-2GS-Z from Monolithic Power Systems is a TRIAC-dimmable, offline LED driver IC with fully integrated 600V MOSFET, operating in boundary-conduction mode to achieve >0.9 power factor, ±3% LED current accuracy, and flicker-free dimming down to 5% brightness. It delivers up to 18W output in non-isolated buck-boost topology for residential and commercial lighting.
For engineers reviewing the MP4032-2GS-Z datasheet, MP4032-2GS-Z pinout, MP4032-2GS-Z application, or MP4032-2GS-Z equivalent, key selection criteria include integrated high-voltage MOSFET rating (600V), real-current control architecture, ZCD-based zero-current switching, VCC auto-restart thresholds (7.5V fault recovery), and SOIC8-7A thermal resistance (θJA = 96°C/W).
Technical Context
The MP4032-2GS-Z implements proprietary real-current control by comparing CS-sensed inductor current against a sinusoidal reference derived from the MULT pin's rectified line voltage, enabling accurate LED current regulation independent of input voltage variation. Its boundary-conduction mode operation ensures valley-switching via ZCD detection (0.35V threshold, 2.45μs blanking), eliminating turn-on losses and reducing EMI.
TRIAC dimming is implemented through phase-angle detection on the MULT pin (VMULT_L = 0.15V, VMULT_H = 0.34V), with extended dimming range up to 76% phase conduction. Protection architecture includes cycle-by-cycle current limiting (VCS_CLAMP_H = 2.24V), over-voltage protection triggered at 5.30V on ZCD (with 1.95μs blanking), and thermal shutdown at 150°C with 50°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Integrated MOSFET | 600V BVDSS, 9.5Ω RDS(ON) @ 125°C - enables direct AC-line connection without external HV switch |
| Power Factor | >0.9 - achieved via multiplier-based real-current control and boundary-conduction mode |
| LED Current Accuracy | ±3% - enabled by internal 0.403V reference (VREF) and real-current sampling |
| Dimming Range | 5–100% brightness - supported by proprietary phase-detection with 0.15V/0.34V MULT thresholds |
| Startup Voltage | VCC_ON = 13.8V - DRAIN-pin charging enables fast start-up without external bias winding |
| Thermal Protection | 150°C shutdown with 50°C hysteresis - prevents permanent damage during sustained overload |
| Package Thermal Resistance | θJA = 96°C/W - defines maximum power dissipation (1.3W @ TA=25°C) in SOIC8-7A |
Pinout & Package
MP4032-2GS-Z is housed in an SOIC8-7A package - an industry-standard 8-pin surface-mount outline with exposed pad for enhanced thermal performance and 7 functional pins (Pin 7 is NC). The package supports reflow soldering per JESD22-A113 and provides θJC = 45°C/W junction-to-case thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 COMP | Loop compensation node | Connects RC network to stabilize current control loop; sets bandwidth and transient response |
| 2 MULT | Multiplier input | Accepts scaled rectified line voltage to generate sinusoidal current reference for PFC |
| 3 ZCD | Zero-current detection | Detects auxiliary winding zero-crossing (0.35V threshold) to trigger valley-switching |
| 4 VCC | Internal power supply | Supplies control logic and gate driver; auto-charged from DRAIN during startup |
| 5 GND | Analog and power ground | Common return for sensing, control, and gate drive; must be separated from power GND per layout guide |
| 6 CS | Current sense input | Senses MOSFET source voltage across external resistor to regulate peak inductor current |
| 8 DRAIN | Integrated MOSFET drain | Connects to rectified AC bus; supplies charging current to VCC and switches LED current path |
Key Features
| Feature | Design Value |
|---|---|
| Proprietary real-current control | Enables ±3% LED current regulation across line and temperature without secondary-side feedback |
| Boundary-conduction mode (BCM) | Eliminates hard-switching losses and reduces EMI by ensuring zero-current turn-on |
| Flicker-free TRIAC dimming | Extends dimming range to 5% via precise MULT pin phase detection and adaptive control loop |
| Integrated 600V MOSFET | Reduces BOM count and PCB area; eliminates external HV switch and associated gate drive complexity |
| Multi-level protection suite | Includes VCC UVLO (13.8V ON / 9.5V normal recovery / 7.5V fault recovery), OVP, SCP, OTP, and cycle-by-cycle current limit |
Applications
| Residential LED Lamps | Commercial Downlights |
|---|---|
Use Scenario: Retrofit A19 and PAR30 LED bulbs operating directly from 120/230VAC with leading-edge TRIAC dimmers. IC Role / Device Role / Timing Role: Offline LED driver controlling buck-boost converter with integrated 600V MOSFET and real-current regulation. Use Value: Enables flicker-free dimming to 5% brightness while maintaining >0.9 power factor and ±3% current accuracy across universal input. | Use Scenario: Fixed-output ceiling-mounted downlights in office and retail environments requiring EMI-compliant, dimmable drivers. IC Role / Device Role / Timing Role: Boundary-conduction mode controller synchronizing MOSFET switching to ZCD valley points for low-loss operation. Use Value: Reduces thermal stress and audible noise via zero-current switching, supporting 50,000-hour lifetime in enclosed fixtures. |
| Industrial Panel Lighting | Smart Home Lighting Modules |
Use Scenario: High-reliability LED panels in factory settings where wide ambient temperature (-40°C to +85°C) and surge immunity are critical. IC Role / Device Role / Timing Role: Protected LED driver with thermal shutdown (150°C), OVP (5.3V ZCD threshold), and short-circuit hiccup mode. Use Value: Maintains safe operation under brownout, open-load, and overvoltage conditions without external protection components. | Use Scenario: Compact, embedded LED modules in smart switches and multi-function hubs requiring minimal footprint and seamless dimmer compatibility. IC Role / Device Role / Timing Role: Single-stage PFC driver integrating MOSFET, startup charger, and dimming interface in SOIC8-7A. Use Value: Eliminates need for auxiliary winding and external HV switch, reducing solution size by >35% vs. two-stage alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar offline LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP4032-3GS-Z | Same architecture but optimized for higher output power (up to 25W); RDS(ON) = 7Ω @ 125°C | Better suited for 24–36V LED strings with >120mA current; requires larger heatsinking | Select when output power exceeds 18W or thermal margin is constrained |
| BP5629D | Non-integrated controller; requires external 600V MOSFET; no integrated DRAIN charger | Lacks fast startup capability; needs auxiliary winding for VCC; lower integration reduces BOM cost but increases layout complexity | Choose when design flexibility or cost sensitivity outweighs compactness and startup speed requirements |
Compared with MP4032-3GS-Z, the MP4032-2GS-Z trades 2Ω higher RDS(ON) for tighter thermal envelope in SOIC8-7A; versus BP5629D, it delivers faster startup, smaller footprint, and simplified transformer design at the cost of fixed MOSFET selection.
Availability
MP4032-2GS-Z is available at Aetrix Electronics and suitable for residential LED lamps, commercial downlights, and industrial panel lighting requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.
Supply support for MP4032-2GS-Z 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 expertise in DC/DC converters, LED drivers, and motor drivers.
The MP4032 product line targets cost-sensitive, high-volume offline LED lighting applications requiring single-stage PFC, TRIAC dimming, and integrated high-voltage switching - prioritizing reliability, efficiency, and design simplicity.
FAQ
What is the minimum off-time specification for MP4032-2GS-Z, and why does it matter?
The MP4032-2GS-Z enforces a minimum off-time of 5.3μs to cap maximum switching frequency and suppress high-frequency EMI. This parameter prevents uncontrolled frequency rise during low-line, high-dimming conditions - ensuring compliance with EN55015 conducted emissions limits and reducing stress on the integrated MOSFET and output diode.
How does the ZCD pin enable zero-current switching, and what is its voltage threshold?
The ZCD pin detects zero-current crossing via a resistor divider from the auxiliary winding, triggering MOSFET turn-on when voltage falls below 0.35V (typical) with 0.55V hysteresis. This ensures valley-switching, eliminating turn-on losses and reverse-recovery noise in the output diode - directly improving efficiency and EMI performance in boundary-conduction mode.
Can MP4032-2GS-Z operate without an auxiliary winding, and how is VCC powered after startup?
No - the auxiliary winding is required for sustained VCC operation after startup. During initial power-up, the DRAIN pin charges the VCC capacitor through an internal high-voltage charger until 13.8V is reached. Once switching begins, energy transferred via the auxiliary winding (rectified and filtered) takes over VCC supply, enabling continuous operation without external bias circuitry.
What is the role of the MULT pin in TRIAC dimming, and how is its voltage range defined?
The MULT pin receives a scaled version of the rectified AC line voltage to detect TRIAC firing angle. Its dimming detection window is defined by VMULT_L = 0.15V (falling edge) and VMULT_H = 0.34V (rising edge), allowing precise phase-angle measurement. A ceramic capacitor (2.2–8.2nF) filters high-frequency noise to ensure robust dimmer recognition across diverse leading-edge dimmer models.
How does the real-current control architecture differ from conventional average-current-mode control?
Real-current control samples instantaneous inductor current via the CS pin and compares it against a time-varying sinusoidal reference generated from the MULT pin - not a fixed DC setpoint. This forces the peak inductor current envelope to match the input voltage waveform, achieving inherent power factor correction and accurate LED current regulation without secondary-side feedback or complex digital compensation.
What protection features are latched versus auto-recovering, and how do they behave under fault?
Over-temperature (150°C) and over-voltage (ZCD > 5.3V) protections are latched - switching halts until VCC drops to 7.5V, triggering auto-restart. VCC UVLO (below 9.5V) and short-circuit conditions induce hiccup mode: intermittent restart attempts every ~130μs until fault clears. Cycle-by-cycle current limiting (2.24V CS clamp) is instantaneous and non-latching, preventing MOSFET destruction during transients.
MP4032-2GS-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 10.3V
- 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:
- 8-SOIC-7A
MP4032-2GS-Z FAQ
1.How can I place an order for MP4032-2GS-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP4032-2GS-Z 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 MP4032-2GS-Z reliable?
The price and inventory of MP4032-2GS-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP4032-2GS-Z is usually 5 days.
3.What payment methods are accepted for MP4032-2GS-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP4032-2GS-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP4032-2GS-Z?
MP4032-2GS-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP4032-2GS-Z 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 MP4032-2GS-Z?
For technical support, including MP4032-2GS-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP4032-2GS-Z requirements.
6.How does Aetrix verify that MP4032-2GS-Z is sourced from the original manufacturer or authorized distributors?
All MP4032-2GS-Z 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 MP4032-2GS-Z meets industry standards.
7.What is the process for return or replacement of MP4032-2GS-Z?
All MP4032-2GS-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP4032-2GS-Z, 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 MP4032-2GS-Z part is unused and in its original packaging.
Return procedure for MP4032-2GS-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP4032-2GS-Z Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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