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Monolithic Power Systems Inc. MP4653GY-P
- Part No.:
- MP4653GY-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MP4653GY-P.pdf
- Description:
- LIPS CC/CV MODE LED DRIVER FOR L
- Quantity:
- Payment:
- Shipping:
Inventory:2,511
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Product details
Overview
MP4653GY-P from Monolithic Power Systems is a secondary-side CC/CV-mode LLC resonant controller for large-size TV LED backlighting, delivering two 180° phase-shifted gate drive signals (GL/GR) to external MOSFETs via gate-drive transformer, operating from 9–30V input, with integrated analog/PWM dimming control, audible-noise-eliminating continuous gate drive during PWM dimming, and dual-loop regulation of LED current (via IFB) and DC bus voltage (via VFB).
For engineers reviewing the MP4653GY-P datasheet, MP4653GY-P pinout, MP4653GY-P application, or MP4653GY-P equivalent, this controller is selected for high-reliability, large-panel LCD TV backlight systems requiring simultaneous constant-current LED string regulation and stable 400V bus voltage generation for auxiliary DC/DC conversion - with real-time fault protection across LED strings and bus stage.
Technical Context
The MP4653GY-P implements frequency-modulated LLC control using dual independent error amplifiers (ICOMP for LED current, VCOMP for bus voltage), where the higher output dictates operating frequency; PWMIN toggles between CC mode (LED current regulated at PWM ON) and CV mode (bus voltage regulated at PWM OFF), while maintaining continuous GL/GR switching to suppress acoustic noise.
It integrates real-time protection circuitry including open/short LED detection (VLED1–VLED4, SSD), bus overvoltage/overcurrent (VFB, VOCP), thermal shutdown, and hiccup-mode recovery timers tied to ICOMP/VCOMP node charging/discharging currents (1.6–2.4 µA), with programmable soft-start (SS/FSET pins) and burst-mode operation triggered by VFB/IFB thresholds exceeding 1.1× reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 9 V to 30 V - powers directly from TV main 12V rail or standby 5V via UVLO threshold of 4.35 V. |
| Gate Drive Output | GL/GR with 9 V supply (VCC), 2 Ω pull-down / 7.5 Ω pull-up - drives external MOSFETs through gate-drive transformer without buffer. |
| LED Current Regulation | IFB pin regulates average voltage to 0.2 V ±4% - sets LED current via external sense resistor; supports 0–100% analog dimming (0–1.18 V on A-Dim). |
| Bus Voltage Regulation | VFB pin samples bus voltage during PWM ON; holds reference for CV mode during PWM OFF - enables stable 400 V DC bus for downstream 12 V/5 V converters. |
| Operating Frequency Range | 35.6 kHz to 2.8 MHz (typ.) - dynamically adjusted by CC/CV loop outputs; minimum set by RFSET/RSS_FSET network (e.g., 40 kΩ → 38.6 kHz). |
| Fault Protection Coverage | Dual-stage: LED open/short-to-GND (SSD, VLEDx), bus OVP (2.4 V threshold, 2.3 µs delay), bus OCP (–100 mV VOCP), thermal shutdown - all trigger hiccup recovery. |
| PWM Dimming Interface | PWMIN accepts 100 Hz–2 kHz signal; PWMOUT drives external dimming MOSFET directly - enables high-contrast, flicker-free dimming with zero-audible-noise gate continuity. |
Pinout & Package
MP4653GY-P is housed in a SOIC-20 package with exposed pad (thermal enhancement), rated for –40°C to +125°C junction temperature and 1.7 W max power dissipation at TA = +25°C (θJA = 72°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SS | Soft Start & Frequency Bias | Sets startup ramp and operating frequency with FSET; pulled low during bus fault - disables switching until hiccup timer resets. |
| 2 FSET | Frequency Programming Input | Current-sourced node; combined with SS determines LLC resonance frequency - enables precise tuning of light output vs. efficiency trade-off. |
| 3 VOCP | Bus Stage Overcurrent Sense | Detects secondary-side bus current; triggers protection when voltage drops below –100 mV - safeguards against short-circuit on 400 V bus winding. |
| 4 VFB | DC Bus Voltage Feedback | Sampled during PWM ON interval; used as CV reference during PWM OFF - enables accurate bus regulation without dedicated sampling circuitry. |
| 5 VCOMP | Voltage Loop Compensation & Hiccup Timer | Connects to RC network for CV loop stability; internal current source charges/discharges (1.6–2.4 µA) during bus fault - defines hiccup period. |
| 6 ICOMP | Current Loop Compensation & Hiccup Timer | Connects to RC network for CC loop stability; same hiccup timing mechanism as VCOMP - ensures coordinated recovery after LED string fault. |
| 7 IFB | LED Current Feedback Input | Accepts voltage from LED sense resistor; regulated to 0.2 V - direct mapping to LED current (e.g., 100 mV = 500 mA with 0.2 Ω Rsense). |
| 8 SSD | LED String Short Detection | Senses secondary current imbalance; trips at –200 mV - detects partial LED string short to ground before catastrophic failure. |
| 9–12 VLED4–VLED1 | LED String Voltage Monitoring | Four independent inputs monitor per-string voltage; detect open/short conditions and inter-string voltage mismatch - critical for multi-string reliability. |
| 13 A-Dim | Analog Dimming Control | 0–1.18 V input linearly scales LED current - enables smooth, low-frequency brightness adjustment without PWM artifacts. |
| 14 PWMIN | PWM Dimming Command Input | 100 Hz–2 kHz logic-level signal - selects CC/CV mode and synchronizes dimming; high = CC mode (LED on), low = CV mode (bus regulation only). |
| 15 VIN | Main Supply Input | 9–30 V input with internal UVLO (4.35 V); bypassed with ≥0.1 µF ceramic capacitor - powers internal regulator and logic circuits. |
| 16 PWMOUT | Dimming MOSFET Gate Driver | Direct 9 V output driving external N-MOSFET - eliminates need for level shifter; fast rise/fall supports >2 kHz PWM dimming. |
| 17 VCC | Internal Regulator Output | 9.4 V (typ.) regulated supply for gate drivers and core logic; bypassed with ≥1 µF ceramic capacitor - ensures stable drive under load transients. |
| 18 GL | Gate Drive Output A | 180° phase-shifted complementary drive signal - drives one side of LLC half-bridge; 2 Ω pull-down / 7.5 Ω pull-up capability. |
| 19 GND | Power & Signal Reference | Common return for all analog/digital circuits - must be low-inductance connection to minimize noise coupling into IFB/VFB paths. |
| 20 GR | Gate Drive Output B | 180° phase-shifted complementary drive signal - drives opposite side of LLC half-bridge; identical drive strength to GL. |
Key Features
| Feature | Design Value |
|---|---|
| Real LIPS Secondary-Side Control | Eliminates primary-side optocoupler and associated latency - enables tighter bus voltage regulation and faster transient response in isolated LLC topologies. |
| Continuous Gate Drive During PWM Dimming | GL/GR remain active in both PWM ON and OFF intervals - prevents audible coil whine and maintains system stability during brightness transitions. |
| Dual-Mode CC/CV Frequency Control | Single-frequency control loop adapts to LED current demand (CC) or bus voltage demand (CV) - simplifies design vs. dual-controller solutions. |
| Comprehensive LED String Protection | Covers open, short-to-GND, short-between-strings, and overcurrent - uses VLED1–VLED4 differential sensing and SSD current monitoring for full coverage. |
| Integrated Hiccup-Mode Recovery | ICOMP/VCOMP nodes serve as fault timers with programmable charge/discharge currents - ensures safe restart after overvoltage, overcurrent, or thermal events. |
| Wide Analog Dimming Range | 0–1.18 V A-Dim input maps linearly to 0–100% LED current - supports legacy analog dimming interfaces without external DAC or op-amp. |
Applications
| LCD TV Backlight System | Large-Format Monitor Power Supply |
|---|---|
|
Use Scenario: 55-inch+ LCD TV with four parallel LED strings and 400 V DC bus powering 12 V/5 V auxiliary rails. IC Role / Device Role / Timing Role: Secondary-side LLC controller regulating both LED current (CC mode) and bus voltage (CV mode) in time-sliced fashion synchronized to PWM dimming. Use Value: Enables >90% system efficiency, 10,000:1 contrast ratio via PWM+analog dimming, and elimination of audible noise during brightness changes. |
Use Scenario: Commercial-grade flat-panel monitor with dynamic local dimming requiring precise per-zone current control and stable bus voltage. IC Role / Device Role / Timing Role: Real LIPS controller managing frequency-modulated LLC stage with independent feedback loops for LED current and bus regulation. Use Value: Delivers <±1% LED current accuracy across temperature, supports burst-mode operation at light load, and provides hiccup recovery from LED string faults. |
| Street Lighting LED Driver | Video Wall Backlight Module |
|
Use Scenario: Outdoor LED street lamp with 400 V bus, multiple LED strings, and requirement for IP67-rated driver with robust fault handling. IC Role / Device Role / Timing Role: Primary controller for isolated LLC topology, providing CC/CV regulation, analog dimming for dusk-to-dawn control, and comprehensive overvoltage/overcurrent protection. Use Value: Ensures >50,000-hour lifetime via thermal foldback, withstands line surges via bus OVP/OCP, and maintains regulation during wide input voltage variation (9–30 V). |
Use Scenario: High-brightness indoor video wall with 16+ LED strings per module, requiring synchronized dimming and fault-isolation across zones. IC Role / Device Role / Timing Role: Multi-string LED controller with VLED1–VLED4 monitoring and SSD detection - enables per-string health reporting and graceful degradation. Use Value: Prevents single-string failure from disabling entire module; supports hot-swap maintenance and meets UL Class 2 safety requirements via secondary-side control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LLC-based TV LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP4654GY-P | Pin-compatible upgrade with enhanced EMI performance, lower quiescent current (1.6 mA vs. 2.5 mA), and extended VCC UVLO hysteresis (300 mV vs. 240 mV). | Preferred for new designs targeting CISPR-15 compliance and standby power <100 mW; retains identical CC/CV architecture and protection features. | Select MP4654GY-P for next-generation TV platforms requiring stricter EMC and energy efficiency; MP4653GY-P remains valid for cost-sensitive legacy production. |
| UCC25710PWR | TI's LLC resonant controller lacks integrated analog dimming, requires external PWM-to-analog converter; no built-in SSD or VLEDx monitoring - needs discrete protection circuitry. | Suitable for industrial LED drivers where analog dimming is unused and protection is implemented externally; not drop-in for TV backlight with multi-string fault coverage. | Choose UCC25710PWR only if system already includes external dimming DAC and string protection ICs - MP4653GY-P delivers full integration with lower BOM count. |
Compared with MP4654GY-P, MP4653GY-P offers identical functional scope but slightly higher standby current and narrower UVLO hysteresis; versus UCC25710PWR, it delivers complete TV-ready integration - eliminating 3–4 external components while enabling real-time multi-string diagnostics and seamless analog+PWM dimming.
Availability
MP4653GY-P is available at Aetrix Electronics and suitable for LCD TV backlight systems, large-format monitor power supplies, outdoor street lighting drivers, and video wall backlight modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MP4653GY-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 expertise in DC/DC converters, LED drivers, motor drivers, and battery management solutions.
The MP4653 belongs to MPS's Real LIPS™ family of secondary-side LLC controllers, designed specifically for high-efficiency, low-noise, and highly reliable LED backlighting in large-panel consumer displays and commercial lighting systems.
FAQ
What is the purpose of the SS and FSET pins working together?
The SS (Soft Start) and FSET (Frequency Set) pins form a dual-node current-sourcing interface that jointly determines the LLC operating frequency. The total sourcing current into both pins sets the oscillator frequency, while the RC network on SS (Rss + Css) controls startup ramp rate and initial frequency slew - ensuring controlled inrush current and avoiding transformer saturation during power-up.
How does the MP4653GY-P eliminate audible noise during PWM dimming?
Unlike conventional controllers that halt switching during PWM OFF intervals, MP4653GY-P maintains continuous GL/GR gate drive in both PWM ON and OFF states. This keeps the LLC resonant tank energized, preventing mechanical vibration of magnetics and capacitors - eliminating the 100–2000 Hz audible whine common in LED backlight systems.
Can the MP4653GY-P regulate both LED current and bus voltage simultaneously?
No - it regulates them time-multiplexed: during PWM ON intervals, the CC loop dominates and regulates LED current via IFB; during PWM OFF intervals, the CV loop dominates and regulates bus voltage via VFB. The frequency is always determined by the more demanding loop output, ensuring both targets are met without conflict.
What protection mechanisms activate during an open LED string fault?
An open LED string causes VLEDx voltage to rise above 2.4 V threshold (OVP_LED), triggering immediate shutdown. Simultaneously, IFB voltage collapses, causing ICOMP to discharge and enter hiccup mode. The controller halts GL/GR outputs, pulls SS low, and cycles ICOMP between 0.45 V and 3 V using internal 2 µA current sources until fault clears.
Is external compensation required on ICOMP and VCOMP pins?
Yes - both ICOMP and VCOMP require external RC compensation networks connected to GND. These networks stabilize the CC and CV control loops respectively; typical values are 1 nF capacitor with 10 kΩ resistor for mid-band gain peaking control, though exact values depend on transformer leakage inductance and bus capacitance per application layout.
Does the MP4653GY-P support burst mode operation?
Yes - burst mode activates independently in both CC and CV loops when IFB or VFB exceeds 1.1× their respective reference voltages and ICOMP/VCOMP voltages fall below threshold. This skips switching cycles to reduce light output and improve light-load efficiency, with hysteresis (70–110 mV) preventing chatter.
What is the function of the SSD pin in LED string protection?
The SSD (Short String Detection) pin monitors secondary-side current imbalance across LED strings. When voltage drops below –200 mV - indicating partial short between LED+ and LED– or to GND - the controller immediately disables GL/GR, asserts hiccup timer on ICOMP, and holds shutdown until reset via SS pin release or power cycle.
MP4653GY-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MP
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- Half-Bridge
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 9V
- Voltage - Supply (Max):
- 30V
- Voltage - Output:
- -
- Current - Output / Channel:
- 2A
- Frequency:
- 20kHz ~ 250kHz
- Dimming:
- Analog, PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
MP4653GY-P FAQ
1.How can I place an order for MP4653GY-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP4653GY-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 MP4653GY-P reliable?
The price and inventory of MP4653GY-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP4653GY-P is usually 5 days.
3.What payment methods are accepted for MP4653GY-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP4653GY-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP4653GY-P?
MP4653GY-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP4653GY-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 MP4653GY-P?
For technical support, including MP4653GY-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP4653GY-P requirements.
6.How does Aetrix verify that MP4653GY-P is sourced from the original manufacturer or authorized distributors?
All MP4653GY-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 MP4653GY-P meets industry standards.
7.What is the process for return or replacement of MP4653GY-P?
All MP4653GY-P units undergo pre-shipment inspection (PSI). If there is an issue with MP4653GY-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 MP4653GY-P part is unused and in its original packaging.
Return procedure for MP4653GY-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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