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Monolithic Power Systems Inc. MP024GS-10-P
- Part No.:
- MP024GS-10-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Datasheet:
-
MP024GS-10-P.pdf
- Description:
- PRIMARY-SIDE REGULATOR WITH CV/C
- Quantity:
- Payment:
- Shipping:
Inventory:4,562
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Product details
Overview
MP024GS-10 from Monolithic Power Systems is a primary-side, constant-current/constant-voltage (CC/CV) flyback regulator with integrated 700V MOSFET and high-voltage start-up current source. It delivers accurate output regulation without optocoupler or secondary feedback, supports programmable cable compensation, operates in DCM with variable off-time control, and achieves <30mW no-load power consumption for USB-compliant low-power adapters.
For engineers reviewing the MP024GS-10 datasheet, MP024GS-10 pinout, MP024GS-10 application, or MP024GS-10 equivalent, key selection criteria include its 700V/4.5Ω internal MOSFET, VCC UVLO thresholds (19.4V on / 8.7V off), FB reference voltage (3.96V), programmable CP-based cable compensation, and full protection suite (OVP, OLP, OTP, SSP, OCkP).
Technical Context
The MP024GS-10 implements primary-side regulation using zero-current detection (ZCD) with 100mV threshold to enforce discontinuous conduction mode (DCM), eliminating need for auxiliary winding sensing. Its variable off-time peak-current control modulates switching frequency (75–110Hz min, up to ~54kHz) to maintain CV/CC regulation while providing natural EMI spectrum shaping.
Feedback is derived from an auxiliary winding via FB pin, with sampling time configurable via SS pin resistor (180–360ns typical) and cable compensation implemented through CP pin-where a 1µF capacitor enables proportional current-sinking into FB to offset voltage drop across output cables. Protection logic includes 128-cycle OLP detection, thermal shutdown at 140°C with 40°C hysteresis, and sensing-short detection via tONmax limit (25–55µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Integrated MOSFET | 700V breakdown voltage, 4.5Ω RDS(on) at 10V VCC - enables direct universal AC input (85–265Vac) without external HV switch. |
| VCC UVLO Thresholds | 19.4V turn-on / 8.7V turn-off - ensures reliable start-up from HV current source and graceful shutdown during brownout. |
| FB Reference Voltage | 3.96V ±60mV - sets precise CV regulation point for auxiliary-winding-derived output voltage feedback. |
| No-Load Power | <30mW - meets Energy Star Level VI and DOE VI standby requirements for wall adapters. |
| Thermal Shutdown | 140°C junction temperature with 40°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| Cable Compensation | CP pin accepts 1µF ceramic capacitor to generate VCP proportional to output current - enables automatic 5V output voltage correction over 0.5A–2A load range. |
| Minimum Switching Frequency | 75Hz (typical) - maintains DCM operation and stable regulation at light loads without audible noise. |
Pinout & Package
MP024GS-10 is housed in a SOIC8-7B package (7-pin variant with pin 3 omitted), optimized for compact offline flyback designs with creepage/clearance compliance. Thermal resistance θJA = 75°C/W enables 10W adapter operation at 50°C ambient in open-frame layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Primary-side feedback input | Samples auxiliary winding voltage to regulate output; triggers OLP if sampled below 1.4V for 128 cycles. |
| 2 GND | Power and signal reference | Common return for internal circuits, current sense resistor, and decoupling capacitors. |
| 4 DRAIN | Drain of integrated 700V MOSFET | Connects to primary transformer winding; supplies HV start-up current to VCC during initial power-up. |
| 5 SOURCE | Source of integrated MOSFET | Connects to current sense resistor (RS) for peak-current-mode control in both CV and CC modes. |
| 6 SS | Sampling time configuration | Resistor value selects FB sampling window (180–360ns) to align with end of secondary diode conduction. |
| 7 CP | Cable compensation control | 1µF capacitor enables output voltage droop compensation; resistor configuration sets DS-Max duty limit (0.3–0.5). |
| 8 VCC | Internal bias supply | Powered by HV current source until 19.4V reached; then supplied by auxiliary winding - UVLO protects against undervoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Primary-side CC/CV regulation | Eliminates optocoupler, TL431, and secondary-side feedback components - reduces BOM count by ≥4 parts and PCB area by >30%. |
| Programmable cable compensation | CP pin + 1µF capacitor enables automatic 50–100mV output voltage boost at full load - maintains USB spec compliance over 1.5m cable. |
| Integrated 700V MOSFET | 4.5Ω RDS(on) allows direct connection to 265Vac rectified bus - removes need for external HV switch and associated gate drive circuitry. |
| Variable off-time DCM control | Switching frequency varies inversely with load - ensures stable regulation from 0.1% to 100% load while minimizing EMI peaks. |
| Comprehensive protection suite | OVP (5.96V FB threshold), OLP (128-cycle detection), OTP (140°C), SSP (tONmax enforcement), OCkP (open-loop monitoring) - enables robust field reliability. |
Applications
| Smartphone Charging Adapter | USB-C Power Bank Charger |
|---|---|
|
Use Scenario: 5V/2A wall adapter for smartphones with tight size constraints and strict no-load power limits. IC Role / Device Role / Timing Role: Primary-side CC/CV controller managing flyback power stage, ZCD-based DCM timing, and cable-drop compensation. Use Value: Achieves <30mW no-load consumption and ±5% output regulation across line/load/temperature - meets IEC 62368-1 and ENERGY STAR requirements. |
Use Scenario: Compact 10W charging module inside portable power banks requiring high conversion efficiency and thermal resilience. IC Role / Device Role / Timing Role: Standalone flyback controller with integrated 700V MOSFET, enabling single-layer PCB layout and simplified transformer design. Use Value: Delivers 78% efficiency at 230Vac/2A and sustains operation up to 110°C ambient - eliminates need for heatsink or forced air cooling. |
| IoT Device Auxiliary Supply | Bluetooth Headset Wall Charger |
|
Use Scenario: 5V/0.5A auxiliary power supply for battery-powered IoT gateways requiring ultra-low standby power and long-term reliability. IC Role / Device Role / Timing Role: Primary-side regulator implementing variable-frequency DCM control and 140°C thermal shutdown with hysteresis. Use Value: Maintains 25mW no-load draw and survives 1000+ thermal cycles - extends product lifetime in unventilated enclosures. |
Use Scenario: Low-cost, CE-certified 5V/1A charger for Bluetooth headsets with stringent EMI limits and cost-sensitive BOM. IC Role / Device Role / Timing Role: CC/CV flyback controller using natural spectrum shaping via variable switching frequency to meet EN55022 Class B conducted EMI. Use Value: Passes EMI testing without Y-capacitor or common-mode choke - reduces bill-of-materials cost by $0.12/unit at volume. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar primary-side CC/CV flyback regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP023GS-10 | Lacks programmable cable compensation; fixed DS-Max = 0.4; identical 700V MOSFET and protection set. | Suitable only for fixed-cable-length applications where output voltage droop is pre-compensated in resistor divider. | Select when cable length is invariant and BOM simplification outweighs dynamic compensation benefit. |
| INN2214K | Higher integration: includes X-cap discharge, soft-start, and enhanced EMI filtering; 650V MOSFET; higher RDS(on) (6.5Ω). | Targets higher-reliability industrial adapters; requires larger transformer due to lower voltage rating and different control architecture. | Choose for designs needing integrated safety features and tighter EMI margins, accepting 15% lower max output power at 230Vac. |
Compared with MP024GS-10, MP023GS-10 sacrifices cable compensation flexibility for lower unit cost, while INN2214K trades off voltage rating and efficiency for broader safety integration - making MP024GS-10 optimal for cost-sensitive, high-volume USB adapter designs requiring adaptive cable compensation.
Availability
MP024GS-10 is available at Aetrix Electronics and suitable for smartphone charging adapters, USB-C power bank chargers, IoT auxiliary supplies, and Bluetooth headset wall chargers requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.
Supply support for MP024GS-10 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 DC/DC converters, LED drivers, and AC/DC controllers.
The MP024 product line delivers highly integrated, low-cost primary-side flyback regulators targeting universal-input, low-power (<15W) charging and adapter applications - emphasizing minimal external components, ultra-low standby power, and robust protection.
FAQ
What is the maximum continuous output power achievable with MP024GS-10 at 230Vac input?
The MP024GS-10 supports up to 13W continuous output power in open-frame configurations at 230Vac ±15%, limited by thermal shutdown at 150°C junction temperature. In enclosed non-ventilated adapters, derating to 10W is required to maintain safe operating temperature at 50°C ambient.
How does the CP pin implement cable compensation, and what external components are required?
The CP pin sinks current into the FB node proportional to output current when a 1µF ceramic capacitor is connected directly to GND. This creates a voltage-dependent current sink that offsets the FB divider's upper resistor, raising regulated output voltage to compensate for IR drop across USB cables. No resistor must be placed on CP for this function to activate.
Can MP024GS-10 operate with a 12V output instead of 5V, and what design changes are needed?
Yes - the FB resistor divider ratio must be recalculated to reflect the target output voltage and auxiliary winding turns ratio. For 12V output, ensure VFB remains at 3.96V under all conditions; adjust CP capacitor value and SS resistor to maintain accurate sampling timing and cable compensation scaling per the equations in the datasheet Section 18.
What protection mechanisms trigger hiccup mode versus hard shutdown?
Hiccup mode is entered upon OVP, OLP, OCkP, SSP, or OTP activation - the IC disables switching, waits for fault clearance, then attempts restart after a fixed delay. Hard shutdown occurs only during VCC UVLO (below 8.7V), where the HV current source re-engages but no switching resumes until VCC exceeds 19.4V again.
Is the SOIC8-7B package lead-free and RoHS-compliant?
Yes - MP024GS-10 is fully lead-free, halogen-free, and compliant with the EU RoHS Directive 2011/65/EU. MPS confirms green status on its official website under Quality Assurance, with JEDEC-standard MSL-3 moisture sensitivity level and 260°C peak reflow profile compatibility.
How does the SS pin resistor affect regulation accuracy in constant voltage mode?
The SS pin resistor sets the FB sampling window duration (180–360ns). Incorrect selection causes early or late sampling relative to secondary diode conduction end, introducing ±3% output voltage error. Optimal value ensures sampling occurs at the voltage plateau where Vaux most accurately reflects VOUT, as verified in the Electrical Characteristics table on page 5.
Does MP024GS-10 support synchronous rectification, and if so, how is it interfaced?
MP024GS-10 does not drive synchronous rectifiers directly. However, its auxiliary winding provides timing signals compatible with MPS's MP6906 SR controller. Connect MP6906's VDD to the same auxiliary winding used for FB feedback, and route its gate drive output to the SR MOSFET - enabling >2% efficiency gain at full load.
MP024GS-10-P 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
- Output Isolation:
- Isolated
- Internal Switch(s):
- Yes
- Voltage - Breakdown:
- 700V
- Topology:
- Flyback
- Voltage - Start Up:
- 19.4 V
- Voltage - Supply (Vcc/Vdd):
- 10V ~ 25V
- Duty Cycle:
- -
- Frequency - Switching:
- 75Hz ~ 40kHz
- Power (Watts):
- -
- Fault Protection:
- Open Loop, Over Load, Over Temperature, Over Voltage, Short Circuit, UVLO
- Control Features:
- Frequency Control, Soft Start
- Operating Temperature:
- -40°C ~ 110°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC-7B
- Mounting Type:
- Surface Mount
MP024GS-10-P FAQ
1.How can I place an order for MP024GS-10-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP024GS-10-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 MP024GS-10-P reliable?
The price and inventory of MP024GS-10-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP024GS-10-P is usually 5 days.
3.What payment methods are accepted for MP024GS-10-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP024GS-10-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP024GS-10-P?
MP024GS-10-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP024GS-10-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 MP024GS-10-P?
For technical support, including MP024GS-10-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP024GS-10-P requirements.
6.How does Aetrix verify that MP024GS-10-P is sourced from the original manufacturer or authorized distributors?
All MP024GS-10-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 MP024GS-10-P meets industry standards.
7.What is the process for return or replacement of MP024GS-10-P?
All MP024GS-10-P units undergo pre-shipment inspection (PSI). If there is an issue with MP024GS-10-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 MP024GS-10-P part is unused and in its original packaging.
Return procedure for MP024GS-10-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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