MPQ2908AGF-AEC1 - 60V Sync Step-Down Controller, AEC-Q100 | MPS
MPN: MPQ2908AGF-AEC1 ✓ فعالMPQ2908AGF-AEC1 نمای کلی
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.
جایگزین‌های drop-in برای MPQ2908AGF-AEC1 — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
MPQ2908A-AEC1
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MPQ2908AGF
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MPQ2908AGF-AEC1-P
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MPQ2908AGF-AEC1-Z
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MPQ2908AGF-Z
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MPQ2908AGL-AEC1-Z
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MPQ2908AGF-AEC1 حداکثر مقادیر مجاز و مشخصات الکتریکی
| Manufacturer | Monolithic Power Systems (MPS) |
| عملکرد | Synchronous Step-Down (Buck) Controller |
| محدوده ولتاژ ورودی | 4 V to 60 V |
| توپولوژی | Current-Mode PWM, Synchronous Buck |
| تعداد خروجی‌ها | 1 |
| محدوده ولتاژ خروجی | 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 |
| محدوده دمای کاری | -40 C to +125 C (AEC-Q100 Grade) |
| بسته‌بندی | 20-pin TSSOP-EP (4.40 mm body, exposed pad) |
| نوع نصب | Surface Mount |
| AEC-Q100 Qualification | Qualified |
| Protection Features | OCP, OVP, UVLO, Thermal Shutdown |
| Soft-Start / Tracking | External SS/TRK pin |
| وضعیت RoHS | Compliant |
پیکربندی پین MPQ2908AGF-AEC1
| پین 1 | BST — Bootstrap supply for high-side gate driver |
| پین 2 | UGATE — High-side MOSFET gate drive output |
| پین 3 | SW — Switch node (connects to external inductor) |
| پین 4 | VCC — Internal 5V LDO output / supply for gate drivers |
| پین 5 | LGATE — Low-side MOSFET gate drive output |
| پین 6 | PGND — Power ground (return for low-side FET) |
| پین 7 | VIN — High-voltage input supply (4V-60V) |
| پین 8 | EN — Enable input (active-high) |
| پین 9 | SS/TRK — Soft-start and tracking input |
| پین 10 | VCC1 — Alternative VCC input (internal regulator bypass) |
| پین 11 | FB — Feedback input (set VOUT via resistor divider) |
| پین 12 | COMP — Compensation network node |
| پین 13 | RT/SYNC — Timing resistor / external sync input |
| پین 14 | OCSET — Over-current set (current-sense threshold) |
| پین 15 | AGND — Analog ground (return for signal circuits) |
| پین 16 | NC — Not connected (per datasheet) |
| پین 17 | NC — Not connected (per datasheet) |
| پین 18 | NC — Not connected (per datasheet) |
| پین 19 | NC — Not connected (per datasheet) |
| پین 20 | PGND — Exposed thermal pad - tie to PGND on PCB |
کاربردهای معمول
MPQ2908AGF-AEC1 مناسب است برای 6 کاربردs: 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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای MPQ2908AGF-AEC1 — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | 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 |
تفاوت‌های کلیدی
- Wide 60V abs-max Vin covers 24V automotive load-dump and 48V industrial transients (در مقابلMPQ2908AGF (non-automotive equivalent))
- Same TSSOP-20EP footprint across ordering codes simplifies BOM management (در مقابلMPQ2908AGF-AEC1-Z (tape-and-reel variant))
- Synchronous buck controller with AAM light-load mode balances efficiency and thermal (در مقابلMPQ2908AGL-AEC1-Z (alternative suffix variant))
یادداشت‌های طراحی
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.
اطلاعات انطباق
AEC-Q100 Grade qualified for automotive applications. RoHS and REACH compliant per distributor product pages. Halogen-free status per MPS product environmental documentation.
