TPS62134D - 3.2A 17V Step-Down Converter | Texas Instruments
MPN： TPS62134D ✓ 啟用中TPS62134D 概覽
A buck (step-down) switching regulator is a type of DC-DC converter that converts a higher input voltage to a lower regulated output using a high-side and low-side power MOSFET switch, an inductor, and capacitors. Within the power management hierarchy, the TPS62134 belongs to the switching voltage regulator family, sitting between point-of-load converters and full PMIC solutions. Its D-CAP-style synchronous architecture eliminates external bootstrap concerns for the low-side FET and improves efficiency at light load.
Key features include the wide 17V maximum input supporting multi-cell and adapter rails, 3.2A continuous output current, a low-power mode input pin that lets the system MCU force efficiency-optimized light-load operation, and output voltage adjustability from 0.7V with a single external resistor divider. The 3x3 mm VQFN-16 (RGT) footprint keeps solution height low for ultraportable designs, and internal compensation simplifies design-in.
Technically, the TPS62134 uses a synchronous rectification topology that reduces conduction losses compared to asynchronous (external-diode) bucks, and its control loop supports fast transient response for CPU core rails. The Intel Skylake compatibility makes it a natural fit for notebook VCCSA/VCCCORE auxiliary rails where dynamic load steps are frequent.
Typical applications include Ultrabook and notebook point-of-load supplies, tablet and convertible power trees, SSD and storage-card supplies, and general 5V/12V-rail point-of-load conversion up to 3.2A.
Design consideration: keep the input loop (input capacitor, VIN pins, PGND) as tight as possible; at 3.2A, switch-node ringing drives EMI, and a well-placed 22uF input ceramic plus short PGND return is essential per the TPS62134x datasheet (Rev. E) layout guidelines.
直接替換替代品，適用於 TPS62134D — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TPS62134D （相同外形與佔位） — 差異在於 Maximum Output Current, Package, Topology.
TPS62130RGTR
✅ 直接替換聯絡詢價
查看資料表 →TPS62130QRGTRQ1
✅ 直接替換聯絡詢價
查看資料表 →TPS62134ARGTR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TPS62134CRGTR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TPS62134DRGTR
✅ 直接替換📋 參考替代品（不在目錄中）
TPS62134D 最大額定值與電氣特性
| 拓撲 | Synchronous Step-Down (Buck) Converter |
| 最大輸出電流 | 3.2 A |
| 輸出電壓 | Adjustable, minimum 0.7 V |
| 輸出數量 | 1 |
| 輸出類型 | Programmable (Positive) |
| Special Feature | Low-Power Mode Input for Intel Skylake platform |
| 封裝 | 16-VFQFN Exposed Pad (RGT), 3x3 mm |
| 安裝類型 | Surface Mount |
| Applications | Ultrabooks, notebooks (Intel Skylake platform) |
| RoHS 狀態 | Compliant |
| Datasheet Revision | Rev. E |
TPS62134D 腳位配置
| 腳位 1 | PVIN — Power input supply |
| 腳位 2 | AVIN — Analog supply input |
| 腳位 3 | EN — Enable pin (logic control) |
| 腳位 4 | SS/TR — Soft-start / tracking |
| 腳位 5 | VOS — Output voltage sense feedback |
| 腳位 6 | LPM — Low-power mode input |
| 腳位 7 | PGOOD — Power good indicator (open drain) |
| 腳位 8 | AGND — Analog ground |
| 腳位 9 | SW — Switch node (inductor connection) |
| 腳位 10 | SW — Switch node (inductor connection) |
| 腳位 11 | PGND — Power ground |
| 腳位 12 | PGND — Power ground |
| 腳位 13 | DEF_1 — Reserved / connect per datasheet |
| 腳位 14 | DEF_2 — Reserved / connect per datasheet |
| 腳位 15 | NC — No connect |
| 腳位 16 | Thermal Pad — Exposed pad, connect to PGND |
典型應用
TPS62134D 適用於 6 應用s: Ultrabook and Notebook Point-of-Load, Tablet and Convertible Power Trees, SSD and Storage Module Supplies, Industrial 12V/24V Rail Point-of-Load, Networking and Communication Modules, Battery-Powered Portable Instruments.
Ultrabook and Notebook Point-of-Load
The TPS62134D was purpose-built for Intel Skylake platform Ultrabooks and notebooks, converting adapter or system rails up to 17V into low-voltage CPU-adjacent supplies at up to 3.2A. Its dedicated low-power mode input lets the embedded controller force light-load efficiency operation during idle, extending battery life in mobile form factors. The 3x3 mm VQFN-16 footprint fits dense motherboard regions near the CPU, and the synchronous topology keeps efficiency high across the load range typical of mobile point-of-load rails.
推薦
Tablet and Convertible Power Trees
In tablets and 2-in-1 convertibles, the TPS62134D steps 5V or battery-pack rails down to subsystem voltages as low as 0.7V with minimal board area. The adjustable output allows one BOM design across multiple SKUs by changing a single resistor divider. Its 17V input ceiling covers direct USB-PD adapter connections, while the low-power mode pin supports aggressive platform power gating. Internal compensation reduces external component count, critical in thin converted designs where z-height and board space are constrained.
推薦
SSD and Storage Module Supplies
Storage modules require a compact, efficient buck that tolerates 12V supply rails and handles bursty NAND read/write currents. The TPS62134D's 3.2A capability and fast transient response absorb load spikes during flash programming, while the 3x3 mm VQFN-16 package fits within the tight envelope of M.2 and U.2 module power sections. Adjustable output from 0.7V supports both 3.3V logic and lower core rails, and synchronous operation minimizes heat inside thermally enclosed storage enclosures.
推薦
Industrial 12V/24V Rail Point-of-Load
Although characterized for Skylake platforms, the TPS62134D's 17V input range and 3.2A output make it suitable for industrial subsystems powered from 12V rails (with margin to 17V transients). In factory automation I/O modules and sensor hubs, the device converts 12V to 5V or 3.3V logic supplies with high efficiency, and its low-power mode pin can be tied off for always-on operation. The small VQFN-16 footprint suits dense DIN-rail module PCBs where board area is premium.
推薦
Networking and Communication Modules
Router, switch, and small-cell module power trees often distribute 12V and need compact 3A-class point-of-load conversion for SoC and PHY rails. The TPS62134D provides this with 0.7V minimum adjustability for core rails, and its synchronous buck efficiency reduces thermal load inside fanless enclosures. The low-power mode input can be driven by the system MCU to cut quiescent draw during standby, supporting Energy-Efficient Ethernet and green-idle requirements in network equipment.
推薦
Battery-Powered Portable Instruments
Portable test and measurement instruments powered by multi-cell Li-ion packs benefit from the TPS62134D's 17V input ceiling, which covers 4S battery stacks with transient headroom. Its light-load mode input allows the host MCU to switch to low quiescent operation between measurements, extending run time. The 3.2A rating powers displays, wireless modules, and MCU core rails simultaneously, and the compact VQFN-16 footprint integrates easily into handheld enclosure PCBs.
推薦
推薦產品摘要
工程參考資料，適用於 TPS62134D — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TPS62130RGTR | TPS62130QRGTRQ1 | TPS62134ARGTR |
|---|---|---|---|---|
| Package | VQFN-16 (RGT) 3x3 mm | VQFN-16 (RGT) 3x3 mm - same | VQFN-16 (RGT) 3x3 mm - same | VQFN-16 (RGT) 3x3 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Input Voltage | up to 17 V | up to 17 V | up to 17 V | up to 17 V |
| Output Current | 3.2 A | 3 A | 3 A | 3.2 A |
| Low-Power Mode Input | Yes (Skylake platform) | No (general-purpose) | No | Yes |
| Automotive Grade | No | No | Yes (AEC-Q100) | No |
| Target Platform | Intel Skylake Ultrabook/notebook | General purpose | Automotive general purpose | Intel Skylake platform |
主要差異化特點
- Intel Skylake platform qualification with low-power mode input (對比TPS62130RGTR)
- Higher output current than general-purpose sibling (對比TPS62130RGTR)
- Automotive option within same footprint (對比TPS62130QRGTRQ1)
設計說明
Place the ceramic input capacitor (datasheet recommends approximately 22uF class) within 2-3 mm of the PVIN/AVIN pins with a direct via to the PGND plane. The exposed thermal pad must connect to a ground array of 5-9 vias to dissipate heat from 3.2A operation and to serve as the primary thermal path per the TPS62134x Rev. E layout section.
Keep the SW switch-node copper area as small as practical while maintaining current density. At 3.2A with fast synchronous edges, SW ringing is the dominant EMI source. Add an RC snubber across SW to PGND only if conducted/radiated emissions fail; verify with a near-field probe before committing the layout.
Do not leave the low-power mode (LPM) input floating - tie it to a defined logic level if the platform EC does not drive it, otherwise mode behavior is undefined. The inductor saturation current must exceed the peak switch current with margin (choose at least 4A-rated inductors for 3.2A loads). Verify output divider tolerance to hold the 0.7V minimum output within regulation limits.
At VIN=12V, VOUT=1.05V, and 3.2A load, conversion efficiency near 85-90% yields roughly 0.4-0.7W dissipation in the 3x3 mm QFN. With theta_JA around 40-50 C/W on a standard 4-layer board, junction rise stays acceptable, but a 2-layer board with thin copper can exceed limits - simulate or measure Tj in final enclosure.
合規資訊
RoHS compliant and lead-free per TI standard portfolio for TPS62134DRGTR. REACH and halogen-free status should be confirmed on the TI quality page for the exact OPN.
