Monolithic Power Systems Inc. MP6922AGSE-P

Overview

MP6922AGSE-P from Monolithic Power Systems is a dual-channel, fast-turn-off intelligent rectifier IC designed for synchronous rectification in LLC resonant converters. It drives two N-channel MOSFETs, regulates forward voltage drop to 30mV, achieves 20ns total turn-off delay, supports up to 300kHz switching, and includes reverse-current protection and light-load latching. It operates across 8V–24V VDD and targets high-efficiency AC-DC adapters.

For engineers reviewing the MP6922AGSE-P datasheet, MP6922AGSE-P pinout, MP6922AGSE-P application, or MP6922AGSE-P equivalent, key selection criteria include its 30mV V_DS regulation accuracy, 20ns turn-off propagation delay, SOIC8 package thermal resistance (θ_JA = 90°C/W), light-load <600μA quiescent current, and dual-channel independent sensing architecture for CCM/CrCM/DCM operation.

Technical Context

The MP6922AGSE-P implements adaptive gate control with blanking-based timing windows: 1μs minimum ON-time and 1.6μs OFF-time blanking prevent shoot-through during fast transients. Its dual-channel architecture independently senses V_D1/V_S1 and V_D2/V_S2, enabling asymmetric load handling in center-tapped or full-wave LLC topologies.

Reverse-current protection activates when the RCP pin voltage exceeds 3.0V (typical), latching both gate drivers for 150μs (typical) to suppress shoot-through during high-frequency CCM operation. The light-load mode uses an external resistor on the LL pin (SOIC14 only) or internal timing (SOIC8/SOIC8E) to enter latch-off after 160μs delay when conducting period falls below 2.2μs.

Key Specifications

Pinout & Package

MP6922AGSE-P is housed in an 8-pin SOIC package (SOIC8) with exposed pad not connected internally (PGND tied externally). Pin functions are validated per Monolithic Power Systems Rev. 1.04 datasheet.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel synchronous rectifier applications.

Compared with NCP4306DR2G, MP6922AGSE-P delivers tighter 30mV regulation and integrated protection in one package; versus discrete MOSFETs, it eliminates external timing components and guarantees 20ns turn-off consistency across temperature and process variation.

Availability

MP6922AGSE-P is available at Aetrix Electronics and suitable for AC-DC adapters, LCD/PDP TV power supplies, and telecom SMPS requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP6922AGSE-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 design centers in the US, China, and Taiwan.

The MP6922A product line targets high-efficiency LLC resonant converter secondary-side synchronous rectification, emphasizing fast turn-off, precise V_DS regulation, and robust protection for energy-efficient power supplies.

FAQ

What is the maximum allowable V_D1/V_D2 voltage for MP6922AGSE-P?

The absolute maximum rating for V_D1 and V_D2 is +180V relative to V_S1/V_S2. This rating is validated per the datasheet's Absolute Maximum Ratings table and supports operation in high-voltage LLC secondaries without external clamping. Exceeding this voltage risks permanent damage to the internal high-voltage JFET input stage.

Does MP6922AGSE-P require external components for basic operation?

Yes - MP6922AGSE-P requires a minimum set of external components: decoupling capacitor on VDD, pull-up resistor on EN if active-high enable is used, and optional RC network on LL pin (not applicable to SOIC8 package). No external timing capacitors or gate resistors are needed for standard operation, as all timing is internally generated.

How does the light-load latch-off function reduce power consumption?

The light-load mode detects when MOSFET conducting time falls below 2.2μs, then latches off both gate drivers after a 160μs delay. This reduces total IC supply current to <600μA, directly meeting Energy Star 0.5W standby requirements without compromising full-load efficiency or regulation accuracy.

Can MP6922AGSE-P operate in continuous-conduction mode (CCM)?

Yes - MP6922AGSE-P supports CCM, CrCM, and DCM operation. Its 20ns turn-off delay and blanking circuitry allow safe gate turn-off during fast current zero-crossings in CCM, while reverse-current protection prevents shoot-through when current reverses before gate turn-off completes.

What is the thermal shutdown behavior of MP6922AGSE-P?

When junction temperature exceeds 150°C, MP6922AGSE-P pulls both VG1 and VG2 low and halts switching. Operation resumes automatically once junction temperature drops to 120°C due to 30°C hysteresis, preventing thermal cycling and ensuring robust protection during overload or poor heatsinking conditions.

Is MP6922AGSE-P compatible with logic-level MOSFETs?

Yes - MP6922AGSE-P drives both standard and logic-level N-channel MOSFETs. Its gate driver delivers 14.5V (typical) high-side output when VDD >16V and VDD−2.2V when VDD <16V, ensuring full enhancement of MOSFETs with V_GS(th) as low as 1.0V while maintaining safe V_GS limits.

What package variants exist for the MP6922A family?

The MP6922A is offered in three packages: SOIC8 (MP6922AGSE-P), SOIC8E with exposed thermal pad (MP6922AGN), and SOIC14 with dedicated LL and RCP pins (MP6922AGS). MP6922AGSE-P uses the standard SOIC8 footprint without exposed pad; thermal performance is characterized at θ_JA = 90°C/W.