TPS63710DRRR - 1A Low-Noise Inverting Buck Converter | TI
MPN: TPS63710DRRR ✓ Hoạt độngTPS63710DRRR Tóm tắt
An inverting buck converter is a type of DC-DC switching regulator that produces a negative output rail from a positive supply rail. It belongs to the broader family of switching voltage regulators within power management ICs, which convert and regulate voltages efficiently using inductive energy storage rather than the dissipative approach of linear regulators. This makes inverting buck converters well suited to battery-powered and higher-current negative-rail applications where simple charge pumps cannot supply enough current and where LDO efficiency would be unacceptable.
Key features of the TPS63710 include a filtered reference system with an external capacitor on the CAP pin that suppresses low-frequency 1/f noise up to approximately 100 kHz - a noise performance required in high-performance telecommunication systems. The fixed-frequency PWM control topology gives predictable switching behavior and simplifies EMI filtering. Synchronous rectification eliminates the need for an external Schottky diode, improving efficiency and reducing bill-of-material count. An enable pin supports power sequencing, and integrated soft-start limits inrush current at startup.
The device targets applications requiring a clean negative rail such as op-amp supply rails, data converters, RF transceivers, bias supplies for GaN amplifiers, and optical modules. Its low-noise reference system makes it well suited to powering sensitive analog circuitry where output ripple and noise would otherwise degrade signal integrity, while the wide 3.1 V to 14 V input range supports both 5 V and 12 V system rails.
When designing with the TPS63710, choose input and output capacitors plus an inductor with adequate saturation current to maintain stability and handle peak currents, and solder the exposed thermal pad to a copper area for heat dissipation. As of 2026-10-11, single-unit pricing from distributors starts near $1.51 (LCSC), with stock available at DigiKey, Mouser, and LCSC.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho TPS63710DRRR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
TPS63710DRRT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TPS63700DRCR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
TPS63710DRRR Tỷ lệ tối đa & tính chất điện
| Cấu trúc | Synchronous Inverting Buck |
| Phạm vi điện áp đầu vào | 3.1 V to 14 V |
| Khoảng điện áp đầu ra | -1 V to -5.5 V |
| Điện áp tối đa đầu ra | 1 A (dependent on VIN/VOUT ratio) |
| Kiểu đầu ra | Adjustable (negative) |
| Switching Control | Fixed-Frequency PWM |
| Cân bằng đồng bộ | Yes (internal MOSFETs) |
| Reference Filtering | Filtered reference with external CAP pin |
| N Nap kích hoạt | Yes |
| Bắt đầu mềm | Integrated |
| Khoảng nhiệt độ hoạt động | -40 C to +125 C (TJ) |
| Hộp | 12-WFDFN Exposed Pad (WSON 3 mm x 3 mm) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Reel Packaging | Tape & Reel (DRR suffix) |
Cấu hình chân TPS63710DRRR
| Chân 1 | AGND — Analog ground |
| Chân 2 | SW — Switch node - connect to inductor |
| Chân 3 | SW — Switch node - connect to inductor |
| Chân 4 | VIN — Positive input supply (3.1 V to 14 V) |
| Chân 5 | EN — Enable pin (active high) |
| Chân 6 | PGND — Power ground |
| Chân 7 | CAP — Filter capacitor for low-noise reference |
| Chân 8 | FB — Feedback - sets VOUT via resistor divider |
| Chân 9 | VOUT — Negative regulated output voltage |
| Chân 10 | PGND — Power ground |
| Chân 11 | PGND — Power ground |
| Chân 12 | PGND — Power ground |
Ứng dụng tiêu biểu
TPS63710DRRR phù hợp cho 6 Áp dụngs: Op-Amp Negative Supply Rail, GaN Power Amplifier Bias Supply, Telecom Base Station Negative Rail, Optical Module Bias Generation, Precision Data Converter Negative Supply, Industrial Sensor Signal Conditioning.
Op-Amp Negative Supply Rail
The TPS63710DRRR's -1 V to -5.5 V adjustable output and 1 A capability make it ideal for powering the negative rail of dual-supply operational amplifiers such as the OPA1612, OPA2277, or ADA4528. In a typical configuration the device accepts a 5 V or 12 V system rail and inverts it to deliver a low-noise -3.3 V or -5 V rail. Its filtered reference system suppresses 1/f noise up to 100 kHz, which is critical when the op-amp drives audio, instrumentation, or precision sensor signal chains where any ripple couples directly into the output. Unlike an LDO negative regulator the TPS63710 maintains high efficiency across the VIN/VOUT delta, reducing heat in compact SMD designs.
Được đề xuất
GaN Power Amplifier Bias Supply
Gallium Nitride (GaN) RF power amplifiers typically require a stable negative bias of -3 V to -5 V to keep the gate pinched off during idle and to set the quiescent current during transmit. The TPS63710DRRR delivers this bias with up to 1 A peak current and the low-noise filtered reference avoids coupling switching ripple into the gate, which would otherwise show up as phase noise or spurious emissions on the RF output. Designers can run the converter from the same 12 V rail that powers the GaN drain, simplifying the power tree. The exposed thermal pad keeps the junction temperature within safe limits even under continuous bias current.
Được đề xuất
Telecom Base Station Negative Rail
Telecom infrastructure such as small-cell base stations and remote radio heads need clean negative rails for data converters, clocking devices, and RF mixers. The TPS63710DRRR's filtered reference system targets exactly this use case by suppressing 1/f noise in the 100 Hz to 100 kHz band. With 1 A of output capability, the part can power multiple downstream devices through a distribution network. The 12-WFDFN package is well suited to the dense, thermally-constrained PCBs typical of modern base-station designs, and the 3.1 V to 14 V input range allows operation from either 5 V or 12 V system buses.
Được đề xuất
Optical Module Bias Generation
Optical transceivers for data center and telecom use a small negative bias to set the operating point of the laser driver or the APD photodiode. The TPS63710DRRR fits this role by accepting a 3.3 V or 5 V supply already present on the module and inverting it to deliver a low-noise -3 V to -5 V rail. The integrated soft-start reduces inrush on hot-plug events, and the enable pin allows the host ASIC to power-gate the laser when the module is idle. The 3 mm x 3 mm WSON footprint fits inside QSFP and SFP module form factors where board area is extremely limited.
Được đề xuất
Precision Data Converter Negative Supply
High-resolution ADCs and DACs often require a small negative rail to bias input common-mode or output swing below ground. The TPS63710DRRR's filtered reference delivers -1 V to -5.5 V with low ripple, preventing the switching frequency from aliasing into the converter's input and degrading SNR. The fixed-frequency PWM operation moves noise to a known harmonic, simplifying post-filtering. Combined with a positive buck such as the TPS61230, designers can power a complete bipolar data-converter front end from a single 3.3 V or 5 V source.
Được đề xuất
Industrial Sensor Signal Conditioning
Industrial sensor signal chains that use bridge sensors, thermocouples, or piezoelectric elements often need a bipolar supply for the front-end op-amp. The TPS63710DRRR generates a clean negative rail from a 24 V industrial bus (with upstream pre-regulation) or directly from a 12 V or 5 V PLC backplane. The -40 C to +125 C operating junction temperature ensures reliable operation in factory-floor enclosures. The synchronous topology eliminates the external Schottky diode, reducing BOM count and improving long-term reliability in vibration-prone environments.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho TPS63710DRRR — 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 | TPS63710DRRT | TPS63700DRCR |
|---|---|---|---|
| Package | 12-WFDFN Exposed Pad (3x3 mm) | 12-WFDFN Exposed Pad - same | 10-WSON (footprint compatible, fewer pins) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Topology | Synchronous Inverting Buck | Synchronous Inverting Buck | Synchronous Inverting Buck |
| Input Voltage Range | 3.1 V to 14 V | 3.1 V to 14 V | 2.7 V to 5.5 V |
| Output Voltage Range | -1 V to -5.5 V | -1 V to -5.5 V | -1.8 V to -5.5 V |
| Maximum Output Current | 1 A | 1 A | 0.6 A |
| Filtered Reference | Yes (CAP pin) | Yes (CAP pin) | No |
| Enable Pin | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- Filtered reference for 1/f noise suppression up to 100 kHz (vsTPS63700DRCR)
- Wider 14 V input range supports 12 V industrial buses (vsTPS63700DRCR)
- 1 A continuous output capability (vsTPS63700DRCR)
Ghi chú thiết kế
Solder the exposed thermal pad to a copper pour on the PCB. Use at least 50 mm^2 of 1 oz copper on the top layer plus thermal vias to the bottom layer to keep the junction temperature within the -40 C to +125 C rating. The inverting topology returns high pulsed current through PGND, so keep the PGND pour short and wide to minimize voltage spikes that can inject noise into the negative output rail.
Place the input ceramic capacitor (>= 10 uF X7R) as close as possible to the VIN pin, and place the output capacitor (>= 10 uF X7R, low ESR) as close as possible to the VOUT pin. Keep the feedback trace short and shielded by AGND. The CAP pin filter capacitor should be a low-leakage ceramic (>= 10 nF X7R) placed directly at the CAP pin to maximize 1/f noise rejection at the regulator reference.
The output current derates as the ratio of (|VOUT| / VIN) increases. At VIN = 5 V and VOUT = -5 V the device cannot deliver its full 1 A continuously; estimate ~0.5 A continuous. Also, never leave the FB pin floating - the part will not regulate and the output may swing to the maximum negative value. Always use 1% tolerance resistors in the FB divider to maintain output accuracy.
Thông tin tuân thủ
RoHS and REACH compliance per TI product page. Halogen-free status not explicitly listed in the verified data and is therefore marked unknown.
