TPS54620 - 6A Synchronous Buck Converter | Texas Instruments
Référence : TPS54620 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.42 | $3,42 |
| 10 | $3.08 | $30,80 |
| 100 | $2.74 | $274,00 |
| 500 | $2.47 | $1 235,00 |
| 1 000 | $2.19 | $2 190,00 |
TPS54620 Présentation
A synchronous buck converter is a type of DC-DC switching regulator that steps down voltage with high efficiency by using two transistors (high-side and low-side) that switch alternately, minimizing conduction losses compared to asynchronous designs. It belongs to the broader category of voltage regulators, which are essential in power management ICs for converting and stabilizing supply voltages in electronic systems. The TPS54620 integrates both MOSFETs, reducing external component count and board space.
Key features include integrated 26 mΩ and 19 mΩ MOSFETs, a split power rail allowing 1.6 V to 17 V on PVIN, a switching frequency range of 200 kHz to 1.6 MHz, synchronization to an external clock, and a low 2-μA shutdown quiescent current. These features enable high efficiency across a wide load range and flexible design for noise-sensitive applications.
Technically, the TPS54620 uses a current-mode control architecture with pulse-by-pulse current protection, ensuring robust operation under overload conditions. The 0.8-V reference with ±1% accuracy over temperature provides precise output regulation. The device also includes thermal shutdown and overcurrent protection, enhancing reliability in demanding environments.
Typical applications include industrial power supplies, automotive infotainment, telecom equipment, and point-of-load converters for FPGAs and DSPs. Its wide input range and high output current make it suitable for 12-V bus systems and battery-powered devices.
When designing with the TPS54620, ensure proper input and output capacitor selection to minimize ripple and maintain stability. The switching frequency can be synchronized to an external clock to avoid beat frequencies in multi-rail systems. Thermal management is critical; the QFN package's exposed pad must be soldered to a sufficient copper area for heat dissipation.
Alternatives de remplacement direct pour TPS54620 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
TPS54320RGYR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS54821RHLR
⚡ Même boîtier📋 Alternative de référence (hors catalogue)
SGM61164
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS543620
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
TPS62914
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
TPS54620 Valeurs maximales et caractéristiques électriques
| Plage de tension d'entrée | 4.5 V to 17 V |
| Plage de tension de sortie | 0.8 V to 15 V (adjustable) |
| Courant de sortie maximal | 6 A |
| Tension de référence | 0.8 V ±1% |
| Fréquence de commutation | 200 kHz to 1.6 MHz |
| Résistance à l'état passant du MOSFET côté haut | 26 mΩ |
| Résistance à l'état passant du MOSFET côté bas | 19 mΩ |
| Shutdown Quiescent Current | 2 μA |
| PVIN Range | 1.6 V to 17 V |
| Boîtier | 14-VFQFN (RGY) 3.5 mm × 3.5 mm |
| Plage de température de fonctionnement | -40°C to +125°C |
| Synchronization | External clock |
| Protection Features | Pulse-by-pulse current limit, thermal shutdown |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
Configuration des broches de TPS54620
| Broche 1 | BOOT — Bootstrap capacitor connection for high-side FET driver |
| Broche 2 | VIN — Input supply voltage |
| Broche 3 | PVIN — Power input for high-side FET |
| Broche 4 | EN — Enable pin (active high) |
| Broche 5 | RT/CLK — Switching frequency set or external clock sync |
| Broche 6 | COMP — Compensation network connection |
| Broche 7 | FB — Feedback voltage sense |
| Broche 8 | GND — Ground |
| Broche 9 | SW — Switch node output |
| Broche 10 | SW — Switch node output |
| Broche 11 | SW — Switch node output |
| Broche 12 | GND — Ground |
| Broche 13 | GND — Ground |
| Broche 14 | GND — Ground (exposed pad) |
Applications typiques
TPS54620 convient pour 6 applications: Industrial Power Supplies, Automotive Infotainment, Telecom Equipment, Point-of-Load Converters, Battery-Powered Devices, FPGA and DSP Power.
Industrial Power Supplies
The TPS54620's 4.5-V to 17-V input range and 6-A output make it ideal for industrial power supplies converting 12-V or 24-V buses to lower voltages. Its high efficiency reduces heat dissipation, and the small QFN package saves board space. The integrated MOSFETs simplify design, while the adjustable output down to 0.8 V supports various logic levels. Synchronization to an external clock helps avoid interference in noisy industrial environments.
Recommandé
Automotive Infotainment
In automotive infotainment systems, the TPS54620 provides a stable 5-V or 3.3-V rail from the 12-V battery. Its wide input range handles voltage transients, and the high switching frequency allows small external components, saving PCB area. The low shutdown quiescent current (2 μA) helps reduce battery drain when the system is off. The device's robust protection features ensure reliable operation in harsh automotive environments.
Recommandé
Telecom Equipment
Telecom equipment often requires multiple voltage rails from a 12-V or 48-V input. The TPS54620's 6-A output can power FPGAs, ASICs, and line cards. Its synchronization feature allows multiple converters to operate at the same frequency, reducing beat noise. The high efficiency minimizes heat in densely packed racks, and the small package enables high power density.
Recommandé
Point-of-Load Converters
The TPS54620 is ideal for point-of-load (POL) converters that step down a 5-V or 12-V bus to core voltages for DSPs, FPGAs, and microcontrollers. Its 0.8-V reference with ±1% accuracy ensures precise voltage regulation for low-voltage digital cores. The integrated MOSFETs and small QFN package reduce component count and board space, enabling compact POL designs. The adjustable output and external synchronization provide design flexibility.
Recommandé
Battery-Powered Devices
In battery-powered devices, the TPS54620's low shutdown quiescent current (2 μA) extends standby time. Its wide input range accommodates battery voltage variations, and the high efficiency maximizes battery life during operation. The small package is suitable for portable equipment. The device can be synchronized to avoid interference with sensitive RF circuits.
Recommandé
FPGA and DSP Power
FPGAs and DSPs require multiple low-voltage, high-current rails. The TPS54620 can provide a 6-A rail at 1.0 V or 1.2 V with tight regulation. Its fast transient response handles dynamic load changes, and the synchronization feature allows multiple converters to operate in phase, reducing input ripple. The small package and integrated FETs simplify layout for dense designs.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour TPS54620 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | TPS54320RGYR | TPS54821RHLR | SGM61164 |
|---|---|---|---|---|
| Package | 14-VFQFN (RGY) | 14-VFQFN (RGY) | 14-VFQFN (RHL) | 14-VFQFN (RGY) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | SGMC |
| Output Current | 6 A | 3 A | 8 A | 6 A |
| Pin Compatibility | Reference | Pin-compatible | Not pin-compatible | Pin-compatible |
Principaux différenciateurs
- Higher output current (6 A) than TPS54320 (3 A) (vs TPS54320RGYR)
- Lower on-resistance MOSFETs (26 mΩ/19 mΩ) than TPS54320 (vs TPS54320RGYR)
- Pin-compatible with TPS54320 (vs TPS54320RGYR)
Notes de conception
Place input and output capacitors close to the IC pins to minimize parasitic inductance. Use a 10-μF ceramic capacitor for input and a 22-μF ceramic capacitor for output. The exposed pad must be soldered to a large copper area for thermal dissipation.
The TPS54620 in a 3.5-mm QFN package can dissipate significant power at high currents. Ensure adequate copper area on the PCB and consider thermal vias under the exposed pad. For 6-A output at low input-output differential, efficiency is high, but at high differentials, power loss may require heatsinking.
Do not exceed the absolute maximum input voltage of 17 V. The PVIN pin can operate from 1.6 V to 17 V, but VIN must be within 4.5 V to 17 V. Ensure the bootstrap capacitor is placed correctly for high-side FET driving. Use a proper compensation network per the datasheet to ensure stability.
Informations de conformité
RoHS compliant per TI product page. Not AEC-Q100 qualified; automotive-grade variants may exist.
