OrderMP18831
Active Part Numbers:
MP18831-A4BGY-Z MP18831-A4BGY-P MP18831-A4BGSE-Z MP18831-A4BGSE-P MP18831-A4CGY-Z MP18831-A4CGY-P MP18831-A4BGLU-Z MP18831-A4BGLU-P MP18831-A4CGSE-Z MP18831-A4CGSE-P
Meaning of P & Z 
Evaluation Tools
MP18851 Evaluation Kit Isolated, Dual-Input Control, Independent Dual-Channel Gate Driver
The MP18851 is an isolated, dual-channel gate driver solution with up to 4A of source and sink peak current capability. The gate driver is designed to drive power switching devices with a short propagation delay and minimal pulse-width distortion.
By utilizing MPS's proprietary capacitive-based isolation technology, the driver can provide up to 5kVRMS withstand voltage (per UL 1577) (SOIC wide-body package option). The MP18851 can also provide a common-mode transient immunity (CMTI) rating above 100kV/μs between the input side and output driver. These advanced features enable high efficiency, high power density, and robustness in a wide variety of power applications.
The MP18851 integrates fully independent dual gate drivers in one package. Each output can be grounded to the separated grounds, or connected to a positive or negative voltage reference. The secondary topology can be configured as a half-bridge high-side (HS) and low-side (LS) driver, or as dual drivers each controlled by two independent input signals.
A wide primary-side VDDI supply voltage (VDDI) range makes the driver suitable to be interfaced with 3.3V and 5V digital controllers. The secondary-side driver can accept up to a 30V supply. All of the supply voltage pins feature multiple under-voltage lockout (UVLO) protection options.
The MP18851 is available in SOIC-16 NB (narrow body), SOIC-16 WB (wide body), and LGA-13 (5mmx5mm) packages.
Isolated, PWM-Input Control, High-Side/Low-Side Half-Bridge Gate Driver
MP18831 Resources
-
FLYBACK VS. LLC POWER SUPPLIES: HIGH-VOLTAGE CONVERTERS SERIESIsolated gate drivers are key parts of power converters, and require isolated power supplies to provide the gate driving voltage without breaking the isolation barrier. One of the most frequently used topologies for these applications is the flyback converter. However, increased leakage inductance caused by minimizing the interwinding capacitance loosens the coupling between the primary and second...
-
ISOLATED POWER CONVERSION FOR HIGH-POWER POWER SUPPLIESMPS’s isolated high-power solutions enable power conversion for high-power power supplies. This example uses a 3kW AC/DC totem-pole power supply and an isolated LLC DC/DC converter. Featured components include the MPF32010 totem-pole controller, MP18831 isolated gate driver, MID1W0505A isolated power supply, MPF32020 LLC controller, MP27622 4-channel digital isolator, and MPQ27811 4-channel digita...
-
POWERING 5G: PFC + LLC POWER SUPPLY SOLUTIONThe development of 5G networks brings new and exciting challenges for the powering of base stations. The MPS solution for powering 5G combines high power and high efficiency within a 1U-sized rack mount casing. It is made up of two core blocks: a totem-pole topology power factor correction (PFC) stage, and a resonant LLC DC/DC converter that ensures stable and efficient power delivery to the outpu...
-
DRIVE SAFE: ISOLATED GATE DRIVERS FOR HIGH-POWER APPLICATIONSNew technological and market trends are constantly pushing for smaller solutions with higher power capabilities. The advancement of electric vehicles, renewable energy microgrids, massive energy storing, and high-power telecom applications have significantly increased power density requirements. Voltage and power levels that were previously reserved for specific, high-power applications are becom...
-
DC FAST CHARGING SYSTEM: MAXIMIZING POWER DENSITY WITH AN LLC TRANSFORMER DRIVERAs the world strives for carbon neutrality, electric vehicles (EVs) are rapidly taking market share from internal combustion engine vehicles. However, one of the issues with electric vehicles is range anxiety, as customers are unsure of how long they will be able to drive without the car needing to be charged. To combat this, governments around the world are massively investing in charging infrast...
-
MPS'S ISOLATED MEDIUM- AND HIGH-POWER POWER SUPPLY PRODUCTSOur lives are undergoing tremendous changes amidst the emergence of carbon neutrality, 5G, artificial intelligence (AI), and big data. The advent of the 5G era has transformed the design concepts of many power supply products, in that it has significantly increased the demand for medium- and high-power power supplies. Due to the increase in data traffic, communication frequency, and transmission ...
-
BUILDING POWER SYSTEMS WITH THE MP188XX ISOLATED GATE DRIVER SERIESPower is essential to 5G communication, data centers, photovoltaic inverters, on-board power supplies, charging piles, and LED control systems. Across these power systems, an isolated gate driver is required to drive the switch tube efficiently and reliably for power conversion. An isolated gate driver is characterized by a small charger and large gate transmission. These drivers are widely use...
-
ISOLATED GATE DRIVERS USE CASE: PORTABLE POWER STATIONSIn this use case, we’ll consider the application of isolated gate drivers in portable power stations. The isolated gate driver enables the charging module and inverter to be combined, which helps shrink the size of these portable power stations. Portable power stations are becoming more and more common as lithium batteries continue to get cheaper and cheaper. For years, people have been using ...
-
HIGH-VOLTAGE PFC: UNDERSTANDING BRIDGELESS POWER FACTOR CORRECTION (PFC) FEATURING THE MPF32010 CONTROLLERNew applications requiring better efficiency and higher power density are increasing demand for components with bidirectional operation, able to transmit power to and from the grid without affecting efficiency. Totem-pole topology offers several advantages over traditional bridged power factor correction (PFC) because it requires fewer semiconductor components. As such, it has become an increasing...
-
GATE DRIVING FOR HIGH-VOLTAGE CONVERTERS: UNDERSTANDING ISOLATED GATE DRIVERSGate drivers control the commutation of power switches, such as field-effect transistors, and are used in many high-voltage applications, including solar inverters, uninterruptible power supplies, charging stations, and on-board chargers. Isolating the power path from the sensitive control signals protects the user and prevents malfunctions. Electrical isolation barriers can be implemented in thre...
-
GATE DRIVING FOR HIGH-VOLTAGE CONVERTERS: GATE DRIVER PROTECTIONS – COMMON MODE TRANSIENT IMMUNITY (CMTI)Common-mode transient isolation (CMTI) protects the circuit by preventing high-frequency voltage components from coupling past the isolation barrier. Insufficient CMTI means high-power noise could be coupled across the isolated gate driver, generating a current loop and charge at the switch gate, leading to a failed CMTI test. Not meeting CMTI requirements can also cause serious circuit malfunctio...
-
MPS'S ISOLATED POWER SOLUTIONS PROMOTE CARBON NEUTRALITYThe revolution for a carbon-neutral era goes beyond an environmental commitment. With premiums on energy-saving solutions that reduce emissions, markets and individual companies are shifting their industrial and energy infrastructures to produce unique and environmentally conscious products. Across various power categories (e.g. photovoltaic and wind power generation, energy storage, battery manag...
-
POWER SUPPLY SOLUTION FOR 5G TELECOM AND OUTDOOR WIRELESS APPLICATIONSThe development of 5G networks brings new challenges for powering base stations. MPS has developed a powerful new power supply solution for 5G telecom applications that ensures stable and efficient power delivery, accurate current sensing, and highly efficient power factor correction to maintain a stable output voltage amid large load variations. This solution implements: Several innovative, hi...
-
HOW INTEGRATION IS ADVANCING INNOVATIONS IN POWER MANAGEMENTAs modern devices become smarter and more customizable, consumers are also demanding that they be smaller and more powerful. This has driven demand for technology that can manage thermals with ever-higher power densities as processing power increases. MPS is innovating and creating highly integrated converters and controllers with cutting-edge efficiency and power density. By integrating the entir...
Learn about our Evaluation Kit
Log in to your account
Create New Account