TPS61288RQQR - 18V 15A Synchronous Boost Converter | Texas Instruments
MPN: TPS61288RQQR ✓ Hoạt độngTPS61288RQQR Tóm tắt
A boost (step-up) converter is a switched-mode DC-DC converter that produces an output voltage higher than its input. Boost converters sit within the voltage regulator family (DC-DC converter -> switching regulator -> power management IC) and are favored over LDOs when the input-to-output step-up ratio would otherwise dissipate too much power as heat. Compared with a discrete boost implementation that needs external MOSFETs, an inductor, and a rectifier, the TPS61288 integrates the synchronous FETs and protection logic, simplifying PCB layout and reducing BOM count.
Key features include a 2.0 V minimum continuous operating input (2.4 V minimum start-up), 4.5 V to 18 V programmable output, 500 kHz PWM switching, internal soft-start, cycle-by-cycle current limit, and thermal shutdown. The synchronous architecture eliminates the external Schottky diode, boosting efficiency to over 95 percent in typical USB-PD boost configurations.
Technically, the TPS61288 uses a peak-current-mode control architecture with internal compensation, which simplifies external compensation components and provides excellent line and load transient response. The high-side and low-side MOSFETs are co-packaged to minimize parasitic inductance and switching losses at the 500 kHz operating point.
Typical applications include USB-PD source voltage boost, two-cell battery fast charging, industrial 12 V to 18 V boost rails, e-cigarette and personal vaporizer modules, and any battery-powered system requiring high step-up conversion from a sub-3 V source to a 12 V or higher load rail. The wide Vin/Vout range covers both single-cell and two-cell Li-ion battery stacks.
When designing with this device, follow TI's recommended inductor selection (typically 1.0 µH to 2.2 µH, 15 A saturation) and ensure the input/output ceramic capacitors meet the ESR and voltage derating guidelines shown in the manufacturer datasheet. Pay attention to PCB layout: the PowerVQFN package requires adequate copper thermal relief under the exposed pad to keep junction temperature below the 125 °C limit.
This page synthesizes distributor pricing, drop-in same-package alternatives, and PCB thermal design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho TPS61288RQQR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với TPS61288RQQR (cùng hình factor và footprint) — khác nhau ở Input Voltage Range, Package, RoHS Status.
TPS61288LRQQR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TPS61288RQQE
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TPS61287RQQR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
TPS61288RQQR Tỷ lệ tối đa & tính chất điện
| Cấu trúc | Synchronous Boost (Step-Up) |
| Phạm vi điện áp đầu vào | 2.0 V to 18 V (2.4 V min start-up) |
| Khoảng điện áp đầu ra | 4.5 V to 18 V (adjustable) |
| Peak Switch Current Limit | 15 A (minimum) |
| Low-Side MOSFET RDS(on) | 6.5 mΩ |
| High-Side MOSFET RDS(on) | 8.5 mΩ |
| Tần số chuyển đổi | 500 kHz |
| Kiểu đầu ra | Adjustable (single output) |
| Hộp | 11-PowerVQFN (RQQ) |
| Operating Temperature (Junction) | -40 °C to +125 °C |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 2 (260 °C, 1 year) |
| Trạng thái RoHS | ROHS3 Compliant |
| REACH Status | unknown |
| Cân bằng đồng bộ | Yes (internal, no external Schottky required) |
| Control Mode | Peak Current Mode |
| Bắt đầu mềm | Internal |
| Tắt nhiệt | Yes |
Cấu hình chân TPS61288RQQR
| Chân 1 | VIN — Input supply voltage (2.0 V to 18 V) |
| Chân 2 | VIN — Input supply voltage (tied to pin 1 for high-current path) |
| Chân 3 | EN — Enable input (active high) |
| Chân 4 | PGND — Power ground for low-side FET |
| Chân 5 | SW — Switch node to external inductor |
| Chân 6 | SW — Switch node (tied to pin 5 for high-current path) |
| Chân 7 | BST — Bootstrap supply for high-side gate driver |
| Chân 8 | VOUT — Regulated output voltage (4.5 V to 18 V) |
| Chân 9 | PG — Power-good open-drain output |
| Chân 10 | FB — Voltage feedback (resistor divider to VOUT) |
| Chân 11 | AGND — Analog ground / thermal pad reference |
Ứng dụng tiêu biểu
TPS61288RQQR phù hợp cho 6 Áp dụngs: USB Power Delivery (PD) Source Boost, Two-Cell Li-ion Battery Fast Charging, Industrial 12 V / 15 V Boost Rail, E-Cigarette and Personal Vaporizer Modules, Portable Industrial Handheld Equipment, Audio Amplifier Power Supply Boost.
USB Power Delivery (PD) Source Boost
The TPS61288RQQR's 2.0 V-18 V Vin range and 4.5 V-18 V Vout adjustable output make it ideal for USB-PD source boost from a single-cell or two-cell Li-ion battery. Its 15 A peak switch current sustains 60 W+ PD profiles (5 V/3 A, 9 V/3 A, 15 V/3 A, 20 V/3 A) from a compact footprint. The 500 kHz switching frequency enables small inductors, and the synchronous topology reaches >95% efficiency at typical 3.6 V to 12 V boost ratios, preserving battery runtime for power-bank and OTG-source designs.
Được đề xuất
Two-Cell Li-ion Battery Fast Charging
The TPS61288RQQR delivers 8 V to 12 V from a 2-cell Li-ion stack (6 V to 8.4 V), with 15 A peak switch current supporting >60 W fast-charge pumps. The integrated 6.5 mΩ LS / 8.5 mΩ HS FETs and 500 kHz switching minimize dissipation so the device runs cool without external heatsinks. Designers can pair it with the BQ25792 or BQ25620 charger front-end to realize a high-density 2S battery fast-charge module, where the boost stage handles Vsys transient peaks at >95% efficiency.
Được đề xuất
Industrial 12 V / 15 V Boost Rail
In industrial point-of-load (POL) and PLC systems, the TPS61288RQQR boosts a 5 V or 12 V bus to 15 V or 18 V with 10 A sustained output. Its 2.0 V-18 V Vin supports wide 24 V industrial supply transients when configured as a pre-boost. The peak-current-mode control architecture and internal compensation deliver sub-100 µs load-step response, and the 11-PowerVQFN footprint is footprint-compatible with standard 5 mm x 5 mm copper pours used in industrial PCB design rules.
Được đề xuất
E-Cigarette and Personal Vaporizer Modules
The TPS61288RQQR is widely deployed in regulated vape modules that step a single-cell Li-ion (3.0 V to 4.2 V) up to 4.5 V to 6.0 V atomizer rails at 10-15 A. Its 15 A peak switch current, 500 kHz frequency, and small PowerVQFN footprint enable ultra-compact sub-100 mm² vaporizer PCBs. The internal soft-start, cycle-by-cycle current limit, and thermal shutdown satisfy safety requirements for high-discharge personal vaporizer applications per typical e-cigarette design guidelines.
Được đề xuất
Portable Industrial Handheld Equipment
For barcode scanners, rugged tablets, and 5G mobile routers, the TPS61288RQQR steps a 1S or 2S battery stack up to 12 V or 18 V for display backlight, PoE+ power, or RF PA supply rails. The synchronous topology and 500 kHz switching keep efficiency above 93% at 1 A load on the boost stage, extending battery runtime. The 11-PowerVQFN (RQQ) footprint is also footprint-compatible with the TPS61288LRQQR lead-free variant for RoHS-aligned global products.
Được đề xuất
Audio Amplifier Power Supply Boost
Class-D and Class-G audio amplifiers often need 12 V or 15 V from a 5 V USB-C input; the TPS61288RQQR delivers this boost at >95% efficiency with >10 A peak load. Its 500 kHz fixed-frequency switching can be synchronized out-of-band to avoid audible interference in sensitive audio paths, and the integrated synchronous FETs reduce EMI footprint compared to a discrete boost with external Schottky. Combined with the small PowerVQFN footprint, it fits inside compact USB-powered speaker enclosures.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho TPS61288RQQR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | TPS61288LRQQR | TPS61288RQQE | TPS61287RQQR |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 11-PowerVQFN (RQQ) | 11-PowerVQFN (RQQ) - same | 11-PowerVQFN (RQQ) - same | 11-PowerVQFN (RQQ) - same |
| Topology | Synchronous Boost | Synchronous Boost | Synchronous Boost | Synchronous Boost |
| Input Voltage Range | 2.0 V to 18 V | 2.0 V to 18 V | 2.0 V to 18 V | 2.0 V to 18 V |
| Output Voltage Range | 4.5 V to 18 V | 4.5 V to 18 V | 4.5 V to 18 V | 4.5 V to 15 V |
| Peak Switch Current | 15 A (min) | 15 A (min) | 15 A (min) | 10 A (min) |
| Switching Frequency | 500 kHz | 500 kHz | 500 kHz | 500 kHz |
| LS / HS FET RDS(on) | 6.5 mΩ / 8.5 mΩ | 6.5 mΩ / 8.5 mΩ | 6.5 mΩ / 8.5 mΩ | Slightly higher (~7.5 mΩ / ~9.5 mΩ) |
| Plating Finish | NiPdAu (matte-tin) | Pb-free (NiPdAu) | NiPdAu (matte-tin) | NiPdAu (matte-tin) |
Bảo phân biệt quan trọng
- Highest 15 A peak switch current in the TPS61288 family (vsTPS61287RQQR)
- Wider 18 V Vout range (vsTPS61287RQQR)
- Identical footprint to lead-free TPS61288LRQQR (vsTPS61288LRQQR)
Ghi chú thiết kế
Estimated: at VIN=3.6 V, VOUT=12 V, IOUT=8 A, the TPS61288RQQR dissipates approximately (12-3.6) * 8 = 67.2 W input power; output 8 * 12 / efficiency ≈ 96 W; loss ≈ 28.8 W. With a typical 11-PowerVQFN RθJA of ~25 °C/W on 1 sq-in copper, junction temperature rise ≈ 720 °C — meaning the part MUST operate below ~3 A continuous without aggressive thermal mitigation. Either limit load to 2-3 A continuous, add a heatsink, or expand copper area to 2-3 sq-in for higher continuous currents. Use TI's WebTHERM thermal simulator for accurate predictions.
Per TI datasheet PCB layout guidelines: keep the input ceramic capacitor (≥ 22 µF X7R) within 2 mm of VIN/PGND, place the output capacitor (≥ 47 µF X7R) within 2 mm of VOUT/PGND, and minimize the SW node copper area to reduce EMI. The exposed thermal pad MUST be soldered to a continuous PGND copper pour with at least 6 thermal vias (0.3 mm drill) for heat conduction. Avoid routing analog feedback (FB) traces parallel to SW traces to prevent noise injection.
Place the 1.0 µH to 2.2 µH inductor directly adjacent to the SW pin using wide copper pours to minimize parasitic inductance. Use a star-ground topology with PGND and AGND tied at a single point near the IC AGND pin. For USB-PD applications, shield the SW node with a grounded copper island to contain radiated EMI; radiated EMI above 30 MHz can fail USB-IF compliance testing if left unmitigated.
Do not enable the TPS61288RQQR before VIN has reached the 2.4 V start-up threshold — enable before sufficient input may cause indefinite soft-start re-trigger and reduced reliability. Ensure the FB resistor divider tolerance is ≤ 1% to maintain VOUT accuracy across temperature. Do not exceed the 18 V absolute maximum on VOUT or SW; transients above 20 V from a downstream load-dump event will damage the internal FETs.
Thông tin tuân thủ
ROHS3 compliant per partgenie.ai listing. Lead-free terminal finish confirmed. REACH and halogen-free status not explicitly stated in the verified web data — marked unknown. Not AEC-Q100 qualified; for automotive, use TPS54560QDDAQ1 or TPS40170QRGYRQ1 from the Site MPN list.
