MPQ2908AGF-AEC1 - 60V Sync Step-Down Controller, AEC-Q100 | MPS
料号： MPQ2908AGF-AEC1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.46 | $34.60 |
| 100 | $3.07 | $307.00 |
| 500 | $2.76 | $1,380.00 |
| 1,000 | $2.45 | $2,450.00 |
MPQ2908AGF-AEC1 概述
A synchronous step-down controller (buck controller) is a type of DC-DC switching regulator that uses an external pair of MOSFET switches and an LC output filter to convert a higher input voltage to a lower regulated output voltage. It sits in the power management IC family, between discrete switching regulators and fully integrated synchronous buck ICs, and is preferred when output current exceeds the capability of monolithic converters. The MPQ2908A family targets wide-Vin, high-current automotive and industrial rails where a controller plus external MOSFETs gives designers flexibility on current, RDS(on), and thermal budget.
Key features include a wide 4V to 60V operating input range, current-mode PWM control with cycle-by-cycle over-current protection, an Advanced Asynchronous Mode (AAM) for improved light-load efficiency, and AEC-Q100 Grade qualification for automotive environments. The TSSOP-20EP exposed pad offers a low thermal resistance path to PCB copper for dissipating controller-side losses. Built-in protection features include OCP, OVP, UVLO, and thermal shutdown.
The architecture uses peak current-mode control with internal slope compensation, providing excellent line-transient response and simple single-loop compensation. The MPQ2908AGF-AEC1 supports both continuous-conduction synchronous operation at heavy loads and diode-emulation AAM at light loads to reduce switching losses. An external SS/TRK pin sets soft-start and tracking behavior for sequencing in multi-rail systems.
Typical applications include automotive infotainment and ADAS power rails, 24V industrial sensor and PLC supplies, battery-powered e-mobility systems (48V e-bike, forklift, light EV), telecom 48V backplane POL conversion, and point-of-load regulators in distributed 24V industrial racks. The wide Vin and AEC-Q100 grade make it a strong fit for any 12V/24V/48V bus system.
When designing with this controller, select external MOSFETs rated for the application's maximum load current and Vin transients (load-dump tolerant up to 60V), and choose the inductor such that ripple current is roughly 30% of full load. Place the input/bootstrap capacitors close to the SW and BST pins to minimize switching-node parasitic inductance and ringing. For automotive designs, follow MPS's EMI mitigation layout note for two-layer boards.
直接替换替代料： MPQ2908AGF-AEC1 ——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：
MPQ2908A-AEC1
✅ 直接替换📋 参考替代料（不在目录中）
MPQ2908AGF
✅ 直接替换📋 参考替代料（不在目录中）
MPQ2908AGF-AEC1-P
✅ 直接替换📋 参考替代料（不在目录中）
MPQ2908AGF-AEC1-Z
✅ 直接替换📋 参考替代料（不在目录中）
MPQ2908AGF-Z
✅ 直接替换📋 参考替代料（不在目录中）
MPQ2908AGL-AEC1-Z
✅ 直接替换📋 参考替代料（不在目录中）
MPQ2908AGF-AEC1 最大额定值与电气特性
| Manufacturer | Monolithic Power Systems (MPS) |
| 功能 | Synchronous Step-Down (Buck) Controller |
| 输入电压范围 | 4 V to 60 V |
| 拓扑 | Current-Mode PWM, Synchronous Buck |
| 输出数量 | 1 |
| 输出电压范围 | 0.8 V to VIN (set by external feedback) |
| External MOSFET Drive | Dual N-channel, high-side + low-side |
| Control Method | Peak Current-Mode PWM with internal slope compensation |
| Light-Load Mode | Advanced Asynchronous Mode (AAM) / diode emulation |
| 工作温度范围 | -40 C to +125 C (AEC-Q100 Grade) |
| 封装 | 20-pin TSSOP-EP (4.40 mm body, exposed pad) |
| 安装类型 | Surface Mount |
| AEC-Q100 Qualification | Qualified |
| Protection Features | OCP, OVP, UVLO, Thermal Shutdown |
| Soft-Start / Tracking | External SS/TRK pin |
| RoHS 状态 | Compliant |
MPQ2908AGF-AEC1 引脚配置
| 引脚 1 | BST — Bootstrap supply for high-side gate driver |
| 引脚 2 | UGATE — High-side MOSFET gate drive output |
| 引脚 3 | SW — Switch node (connects to external inductor) |
| 引脚 4 | VCC — Internal 5V LDO output / supply for gate drivers |
| 引脚 5 | LGATE — Low-side MOSFET gate drive output |
| 引脚 6 | PGND — Power ground (return for low-side FET) |
| 引脚 7 | VIN — High-voltage input supply (4V-60V) |
| 引脚 8 | EN — Enable input (active-high) |
| 引脚 9 | SS/TRK — Soft-start and tracking input |
| 引脚 10 | VCC1 — Alternative VCC input (internal regulator bypass) |
| 引脚 11 | FB — Feedback input (set VOUT via resistor divider) |
| 引脚 12 | COMP — Compensation network node |
| 引脚 13 | RT/SYNC — Timing resistor / external sync input |
| 引脚 14 | OCSET — Over-current set (current-sense threshold) |
| 引脚 15 | AGND — Analog ground (return for signal circuits) |
| 引脚 16 | NC — Not connected (per datasheet) |
| 引脚 17 | NC — Not connected (per datasheet) |
| 引脚 18 | NC — Not connected (per datasheet) |
| 引脚 19 | NC — Not connected (per datasheet) |
| 引脚 20 | PGND — Exposed thermal pad - tie to PGND on PCB |
典型应用
MPQ2908AGF-AEC1 适用于 6 应用s: Automotive 12V/24V Body and Chassis Power Rails, Industrial 24V PLC and Sensor Power Supplies, 48V Light-EV and E-Bike Battery Systems, Telecom 48V Backplane POL Conversion, Automotive Infotainment and ADAS Power, Battery-Powered Test Equipment and Portable Instruments.
Automotive 12V/24V Body and Chassis Power Rails
The MPQ2908AGF-AEC1's 4V to 60V input range and AEC-Q100 Grade qualification make it a strong fit for automotive body and chassis rails directly off the 12V battery or 24V truck bus. The controller regulates down to 5V/3.3V for BCMs, lighting controllers, and body ECUs. With cycle-by-cycle OCP and the exposed thermal pad, the design survives automotive load-dump transients up to 60V while delivering 5-10 A continuous. Use external 80V-rated N-channel FETs to handle ringing and inductive kick, and add input TVS protection for hot-plug events.
推荐
Industrial 24V PLC and Sensor Power Supplies
Industrial 24V PLC, sensor, and motor-control rails benefit from the MPQ2908AGF-AEC1's wide Vin tolerance, which covers 24V nominal plus ±20% supply variation and surge transients common on factory floors. The current-mode control provides fast line-transient response when large motors share the same 24V bus and step-load the controller output. Light-load AAM efficiency extends standby life for always-on sensor nodes. Use it to step 24V down to 5V/3.3V for PLC CPUs and analog front-ends with 5-15 A of headroom.
推荐
48V Light-EV and E-Bike Battery Systems
The MPQ2908AGF-AEC1 supports 48V battery packs used in light-EV, e-bike, and forklift applications, stepping the pack down to 12V or 5V for downstream controllers, displays, and lighting. Its 60V abs-max Vin provides headroom against regen transients and inductive kickback in shared-ride configurations. The synchronous topology with external MOSFETs allows designers to size the power stage for 10-30 A peaks demanded during throttle response. AEC-Q100 qualification means the same BOM also qualifies for related automotive and off-road vehicle applications.
推荐
Telecom 48V Backplane POL Conversion
In telecom and networking equipment, the MPQ2908AGF-AEC1 can be used at the point-of-load to convert a 48V backplane rail to 12V or 5V for downstream isolated and non-isolated POL converters. The controller's high efficiency at moderate loads reduces thermal stress in sealed equipment where airflow is restricted. Soft-start via the SS/TRK pin enables coordinated inrush when many parallel POLs power up together. The exposed pad TSSOP-20EP package provides a low thermal-resistance path on the PCB bottom layer.
推荐
Automotive Infotainment and ADAS Power
Infotainment head units, ADAS sensor modules, and cockpit domain controllers require clean, high-current rails from the 12V automotive bus. The MPQ2908AGF-AEC1 provides up to 10-15 A of regulated 5V/3.3V power to processor SoCs and DDR memory, with cycle-by-cycle OCP and AEC-Q100 reliability needed for safety-relevant ADAS rails. The exposed pad TSSOP-20EP footprint simplifies thermal layout on compact two-layer ADAS sensor PCBs.
推荐
Battery-Powered Test Equipment and Portable Instruments
Portable test instruments, medical carts, and ruggedized field equipment often run from 24V/36V Li-ion battery packs. The MPQ2908AGF-AEC1 efficiently steps these packs down to 12V or 5V rails for measurement and display subsystems. The controller's AAM light-load mode extends battery runtime during standby, and the wide Vin range covers the full battery discharge curve from 42V (full) down to 24V (cutoff). The TSSOP-20EP exposed pad fits compact handheld layouts.
推荐
推荐产品汇总
工程参考数据： MPQ2908AGF-AEC1 ——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 | MPQ2908A-AEC1 | MPQ2908AGF | MPQ2908AGF-AEC1-P | MPQ2908AGF-AEC1-Z | MPQ2908AGF-Z | MPQ2908AGL-AEC1-Z |
|---|---|---|---|---|---|---|---|
| Package | TSSOP-20EP | TSSOP-20EP - same | TSSOP-20EP - same | TSSOP-20EP - same | TSSOP-20EP - same | TSSOP-20EP - same | TSSOP-20EP - same |
| Brand | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems |
| Input Voltage Range | 4 V to 60 V | 4 V to 60 V | 4 V to 60 V | 4 V to 60 V | 4 V to 60 V | 4 V to 60 V | 4 V to 60 V |
| AEC-Q100 Qualified | Yes (Grade) | Yes (Grade) | No (commercial/industrial) | Yes (Grade) | Yes (Grade) | No (commercial/industrial) | Yes (Grade) |
| Packaging Format | Tube | Tube (base) | Tube (base) | Tape & Reel (-P) | Tape & Reel (-Z) | Tape & Reel (-Z) | Tape & Reel (-Z) |
| Topology | Sync Buck Controller | Sync Buck Controller | Sync Buck Controller | Sync Buck Controller | Sync Buck Controller | Sync Buck Controller | Sync Buck Controller |
| Control Method | Current-Mode PWM | Current-Mode PWM | Current-Mode PWM | Current-Mode PWM | Current-Mode PWM | Current-Mode PWM | Current-Mode PWM |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C (industrial) | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C (industrial) | -40 C to +125 C |
关键差异点
- Wide 60V abs-max Vin covers 24V automotive load-dump and 48V industrial transients （对比 MPQ2908AGF (non-automotive equivalent))
- Same TSSOP-20EP footprint across ordering codes simplifies BOM management （对比 MPQ2908AGF-AEC1-Z (tape-and-reel variant))
- Synchronous buck controller with AAM light-load mode balances efficiency and thermal （对比 MPQ2908AGL-AEC1-Z (alternative suffix variant))
设计说明
Place the high-side bootstrap capacitor (BST to SW) within 5 mm of the controller pins to ensure clean high-side gate drive. Keep the SW node copper area minimal to reduce EMI, and use a Kelvin-connected ground return for the low-side FET source sense. Follow MPS's TSSOP-EP layout guideline with multiple thermal vias under the exposed pad tied to an internal PGND plane.
Estimated: At Vin = 24V stepping down to 5V at 5 A, controller-side dissipation plus external MOSFET losses can reach 4-6 W. The TSSOP-20EP package thermal resistance must be verified against the PCB copper area (theta_JA ranges from ~35 C/W on 1 sq-in copper to ~50 C/W on minimal copper). For continuous 5 A operation, a 2+ sq-in copper pour with 9+ vias under the EP is recommended to keep junction temperature rise under 50 C.
For automotive EMI compliance, use a small RC snubber (1-3 ohm + 1-5 nF) across the synchronous FET to damp SW-node ringing. Choose external MOSFETs with low Qgd/Qgs ratios to minimize switching transients, and place input ceramic capacitors (10-22 uF X7R) immediately at the VIN pin to source high-frequency switching current.
The exposed thermal pad on the TSSOP-20EP package is the primary heat path. Estimated: with 9 thermal vias (0.3 mm drill, 1 oz plating) on a 4-layer 1-oz inner plane, theta_JA drops to roughly 35-40 C/W. For automotive designs with high ambient temperatures (105 C under-hood), a 2-oz top-layer copper pour is recommended.
合规信息
AEC-Q100 Grade qualified for automotive applications. RoHS and REACH compliant per distributor product pages. Halogen-free status per MPS product environmental documentation.
