MCP14A0902-E/MSVAO - 9A MOSFET Driver, MSOP-8 | Microchip
料号： MCP14A0902-E/MSVAO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.65 | $26.50 |
| 100 | $2.25 | $225.00 |
| 500 | $1.95 | $975.00 |
| 1,000 | $1.72 | $1,720.00 |
MCP14A0902-E/MSVAO 概述
A MOSFET gate driver is a specialized power-management IC that sits between a low-power control signal (from a microcontroller, PWM controller, or logic gate) and the gate of a power MOSFET. By providing high peak gate current, gate drivers drastically reduce transition losses in switching converters, motor drives, and Class-D audio stages. Within the broader hierarchy, MOSFET drivers belong to the gate-driver family under Power Management, sitting between analog controllers and the discrete power transistors they switch.
Key features include 9.0 A peak output drive current, low shoot-through current, fast rise/fall times, matched propagation delays between the two output channels, an enable pin for shutdown management, and a TTL/CMOS-compatible low-threshold input. The wide 4.5 V to 18 V supply range suits both 5 V logic rails and 12 V bus systems, while the small MSOP-8 footprint enables compact high-density layouts.
The device uses a CMOS push-pull output stage with internal logic-level translation, allowing a 3.3 V microcontroller to drive the gate of a 12 V N-channel MOSFET without level shifters. The matched propagation delay between channels minimizes dead-time in synchronous-rectifier and half-bridge topologies, while the 9 A peak current quickly charges large gate charges (Qg) typical of high-current MOSFETs.
Typical applications include DC-DC converter synchronous rectification, low-side and high-side MOSFET switching in motor control, Class-D audio amplifiers, power-supply OR-ing FET control, and high-current solenoid/relay drivers. The -VAO suffix indicates Microchip automotive-grade qualification, making it suitable for AEC-Q100-targeted designs.
When laying out the PCB, keep the driver within 10 mm of the MOSFET gate to minimize parasitic inductance, and place a 1 V-tze ceramic bypass capacitor close to the VDD pin. If using the enable pin for sequencing, add a 100 kV pull-down to define a default-off state during power-up glitches.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone Microchip datasheet, giving engineers a single decision-grade reference for sourcing and applying the MCP14A0902-E/MSVAO.
直接替换替代料： MCP14A0902-E/MSVAO ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
MCP14A0902-E/MS
✅ 直接替换📋 参考替代料（不在目录中）
MCP14A0901-E/MS
✅ 直接替换📋 参考替代料（不在目录中）
MCP14A0902T-E/MS
✅ 直接替换📋 参考替代料（不在目录中）
TC4427EOA
✅ 直接替换📋 参考替代料（不在目录中）
MCP14A0902-E/MSVAO 最大额定值与电气特性
| Peak Output Current | 9.0 A |
| 输出配置 | Non-inverting (MCP14A0902) |
| 输出数量 | 2 |
| Supply Voltage (VDD) | 4.5 V to 18 V |
| Input Threshold | Low-threshold, TTL/CMOS compatible |
| 使能引脚 | Yes (active-high) |
| Propagation Delay | Matched between outputs |
| Rise/Fall Time | Fast (see datasheet) |
| Shoot-Through Current | Low |
| 工作温度 | -40 to +125 °C (E suffix) |
| 封装 | 8-pin MSOP (MS) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| Automotive Qualification | VAO suffix - automotive grade |
| Family Variant | MCP14A0901 (inverting) / MCP14A0902 (non-inverting) |
MCP14A0902-E/MSVAO 引脚配置
| 引脚 1 | NC — Not connected (per datasheet) |
| 引脚 2 | IN — Logic input (non-inverting) |
| 引脚 3 | VDD — Supply voltage (4.5 V to 18 V) |
| 引脚 4 | OUT1 — Output channel 1 |
| 引脚 5 | OUT2 — Output channel 2 |
| 引脚 6 | EN — Enable (active high) |
| 引脚 7 | GND — Ground |
| 引脚 8 | NC — Not connected (per datasheet) |
典型应用
MCP14A0902-E/MSVAO 适用于 6 应用s: 12 V Synchronous Buck Converter, Automotive LED Headlamp Driver, Class-D Audio Amplifier Output Stage, BLDC Motor Drive Half-Bridge, Solenoid and Relay Driver, Power Supply OR-ing FET Control.
12 V Synchronous Buck Converter
The MCP14A0902-E/MSVAO drives the low-side and high-side N-channel MOSFETs in a 12 V-to-low-voltage synchronous buck converter. Its 9.0 A peak gate current rapidly charges typical 30-100 nC Qg MOSFETs in 10-30 ns, slashing switching losses at 300-500 kHz. The matched propagation delay between channels minimizes dead-time, limiting body-diode conduction and boosting efficiency by 2-4% versus discrete gate-drive schemes. The enable pin also enables power-sequenced start-up coordinated with upstream rails.
推荐
Automotive LED Headlamp Driver
In an automotive LED headlamp module powered from a 12 V bus, the MCP14A0902-E/MSVAO drives the switching MOSFET of a constant-current buck regulator that sets LED brightness. The -VAO suffix attests to automotive-grade qualification required by headlamp ECUs, and the wide 4.5 V to 18 V supply tolerates load-dump transients. With 9 A peak drive, the part easily switches the higher-Qg MOSFETs needed for multi-amp LED strings at frequencies up to 1 MHz, enabling small inductors and a compact PCB.
推荐
Class-D Audio Amplifier Output Stage
The MCP14A0902-E/MSVAO drives the half-bridge output MOSFETs in a Class-D audio amplifier, where its 9 A peak current supports fast switching of large gate charges needed for high-output-power stages (100 W and above). The matched propagation delay between the two outputs keeps dead-time symmetric, minimizing THD+Noise caused by asymmetric dead-time-induced body-diode conduction. The enable pin enables pop-free mute sequencing on power-up and power-down, critical for hi-fi audio.
推荐
BLDC Motor Drive Half-Bridge
In a brushless-DC (BLDC) motor driver, the MCP14A0902-E/MSVAO drives the low-side and high-side N-channel MOSFETs of one phase leg. The wide 4.5 V to 18 V supply accommodates battery packs of 6 S Li-ion (25.2 V max) with headroom for inductive flyback. The driver's matched delay between outputs keeps shoot-through currents below 1 A even at 50 kHz PWM, reducing thermal stress on the discrete MOSFETs and improving overall inverter efficiency by 1-3%.
推荐
Solenoid and Relay Driver
Industrial solenoid and relay coils often need rapid turn-on and turn-off for high-cycle-rate applications. The MCP14A0902-E/MSVAO drives the low-side MOSFET that switches a 12 V or 24 V inductive load, with its 9 A peak ensuring sub-microsecond gate transitions even with large MOSFETs. The matched delay between the two driver outputs lets designers use both channels in parallel for a 18 A effective peak current on a single coil. The wide supply headroom tolerates inductive kick without damage.
推荐
Power Supply OR-ing FET Control
In a redundant power-supply architecture, the MCP14A0902-E/MSVAO drives the OR-ing MOSFET that connects a backup supply to a shared load. The driver's low-threshold input allows direct control from a 3.3 V microcontroller GPIO without level-shifting. The 9 A peak current rapidly turns the OR-ing FET on during hot-swap events, minimizing inrush glitches. The enable pin is wired to the supply-good signal to disconnect the load on fault conditions.
推荐
推荐产品汇总
工程参考数据： MCP14A0902-E/MSVAO ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MCP14A0902-E/MS | MCP14A0901-E/MS | MCP14A0902T-E/MS | TC4427EOA |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | MSOP-8 (MS) | MSOP-8 (MS) - same | MSOP-8 (MS) - same | MSOP-8 (MS) - same | MSOP-8 (MS) - same |
| Peak Output Current | 9.0 A | 9.0 A | 9.0 A | 9.0 A | 1.5 A |
| Output Polarity | Non-inverting | Non-inverting | Inverting | Non-inverting | Non-inverting |
| Supply Voltage Range | 4.5 V to 18 V | 4.5 V to 18 V | 4.5 V to 18 V | 4.5 V to 18 V | 4.5 V to 18 V |
| Enable Pin | Yes (active-high) | Yes (active-high) | Yes (active-high) | Yes (active-high) | No |
| Automotive Grade | Yes (VAO suffix) | No (standard grade) | No (standard grade) | No (standard grade) | No |
| Matched Propagation Delay | Yes | Yes | Yes | Yes | No |
关键差异点
- Automotive-grade qualification with same silicon as standard MCP14A0902 （对比 MCP14A0902-E/MS)
- Non-inverting input polarity for direct controller compatibility （对比 MCP14A0901-E/MS)
- 9 A peak current for high-Qg MOSFETs （对比 TC4427EOA)
设计说明
Place the MCP14A0902-E/MSVAO within 10 mm of the MOSFET gates it drives. The MSOP-8 thermal pad (if exposed on the PCB land pattern) should be soldered to a copper pour of at least 100 mm² to keep the driver cool. Estimated: at 9 A peak pulses and 200 kHz switching, the driver dissipates roughly 0.3 W average in a typical 12 V synchronous buck, well within the MSOP-8 thermal limit without a dedicated heatsink.
Decouple the VDD pin with a 1 µF X7R ceramic capacitor placed within 5 mm of the pin. For high-frequency switching loads above 500 kHz, add a 0.1 µF ceramic in parallel to suppress VDD ringing caused by the 9 A peak output current. The enable pin should be tied high through a 100 kΩ pull-up to VDD for default-on operation, or to a GPIO for sequenced power-up.
Do not exceed the absolute maximum VDD of 20 V; even brief transients above 18 V can permanently damage the output stage. Avoid driving the input pin with signals that exceed VDD, as the ESD structures can latch up. The two output channels share ground and VDD but have independent gate paths - do not tie them together at the load side, or shoot-through protection is bypassed.
合规信息
VAO suffix denotes automotive-grade qualification per Microchip product grade definitions. RoHS and REACH compliance per Microchip product environmental documentation.
