TPS6521855 - 7-Output PMIC for AM64x | Texas Instruments
Référence : TPS6521855 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $7.2 | $7,20 |
| 10 | $6.48 | $64,80 |
| 100 | $5.62 | $562,00 |
| 500 | $5.04 | $2 520,00 |
| 1 000 | $4.68 | $4 680,00 |
TPS6521855 Présentation
A Power Management IC (PMIC) is a highly integrated device that consolidates multiple power conversion functions - DC-DC converters, LDO regulators, power sequencing, voltage monitoring, and protection - into one package. In processor-based systems, the PMIC sits between the power source and the SoC's multiple voltage domains, translating a battery or adapter input into the core, memory, I/O, and auxiliary rails. Within the system hierarchy, a PMIC belongs to the power management IC family, and its role is to provide reliable, sequence-correct power delivery at every boot and operating state.
Key features include seven integrated output channels, factory pre-programmed default register settings matched to the AM64x power-up sequence, and an input voltage range of 2.2V to 5.5V with output voltages configurable from 0.85V to 3.4V at up to 1.8A per the distributor-listed output current. The factory configuration reduces firmware bring-up effort because the device starts with AM64x-compatible settings without external programming.
From an architecture perspective, the TPS6521855 is closely related to the TPS6521815 in the TPS65218 family. According to a TI E2E power-management forum discussion, TPS6521815 and TPS6521855 are pin-to-pin compatible devices sharing the same programming steps; the TPS6521855 ships pre-programmed for AM64x, while the TPS6521815 is configured via register programming for custom sequencing.
Typical applications include industrial PLCs and factory automation controllers, portable battery-powered instruments, IoT edge gateways, robotics and motion-control boards, and test-and-measurement instrumentation. In each case, the AM64x multi-rail power requirements are met by a single 48-VQFN PMIC, reducing BOM count and board area.
When designing, verify the input source configuration (Li-Ion vs 5V adapter) and place adequate input and output capacitance close to the package. If sequencing different from factory defaults is required, select the TPS6521815 and program the register map accordingly.
Alternatives de remplacement direct pour TPS6521855 — 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 :
TPS6521815RSLT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS6521815RSLR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS6521855RSLR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS65951A1ZGU
⚡ Même boîtier ⚠️ Spécifications non vérifiées✓ En stock
$4.48 / unité
Voir la fiche technique →TPS6521855 Valeurs maximales et caractéristiques électriques
| Fonction | Power Management IC (PMIC) for AM64x processors |
| Nombre de sorties | 7 |
| Plage de tension d'entrée | 2.2 V to 5.5 V |
| Plage de tension de sortie | 0.85 V to 3.4 V |
| Courant de sortie maximal | 1.8 A |
| Input Source Topology | Li-Ion battery or 5-V adapter |
| Température de fonctionnement | -40C to +105C |
| Boîtier | VQFN-48 (6x6 mm) |
| Style de montage | SMD/SMT |
| Packaging | Cut Tape, Reel |
| Series | TPS6521855 |
| Type | Multi-Channel PMIC |
| Processor Support | AM64x Arm Cortex-A53 |
| Configuration | Factory pre-programmed for AM64x power sequence |
| Pin Compatibility | Pin-to-pin compatible with TPS6521815 |
Guide de configuration des broches du TPS6521855 vqfn-48 (6x6 mm)
Configuration des broches du TPS6521855 (boîtier vqfn-48 (6x6 mm)). Ce composant de puissance comporte des bornes de grille, de drain et de source. Pour les boîtiers non polarisés, consultez la fiche technique du fabricant pour l'orientation exacte de la broche 1 et les détails de l'empreinte. Les applications courantes incluent la conception d'alimentations, la commande de moteurs et la commutation de charges.
Aucune donnée de brochage détaillée disponible pour TPS6521855.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
TPS6521855 convient pour 6 applications: Industrial PLC and Factory Automation, Portable Battery-Powered Instruments, IoT Edge Gateways, Robotics and Motion Control Boards, Test and Measurement Instrumentation, Human-Machine Interface (HMI) Panels.
Industrial PLC and Factory Automation
The TPS6521855 fits PLC main controller boards built on the AM64x Cortex-A53 SoC because its seven rails cover the core, memory, and I/O voltage domains from a single 48-VQFN device. Its -40C to +105C industrial characterization and factory pre-programmed AM64x sequencing remove firmware bring-up risk on the factory floor. Placed between a 5V adapter rail and the AM64x with local bulk and ceramic decoupling, it eliminates three to four discrete converter ICs, cutting board area and BOM lines while guaranteeing sequence-correct boot on every power cycle.
Recommandé
Portable Battery-Powered Instruments
For handheld and portable instruments using an AM64x processor, the TPS6521855 accepts a single-cell Li-Ion input within its 2.2V to 5.5V range and generates all processor rails at up to 1.8A. The integrated design avoids the quiescent-current and board-area penalties of a multi-chip discrete power tree, which matters in battery-powered enclosures. Because the power-up sequence is factory-set, the instrument boots identically on every battery insertion, and the 48-VQFN 6x6 mm footprint keeps the power section compact on two-layer or four-layer portable PCBs.
Recommandé
IoT Edge Gateways
AM64x-based industrial IoT edge gateways need multiple regulated rails for the processor, DDR memory, Ethernet PHYs, and peripherals; the TPS6521855 consolidates this into one PMIC. Its 0.85V to 3.4V output span covers modern low-voltage core and I/O rails, and the pre-programmed sequence ensures the processor never sees an unpowered or out-of-order rail during PoE-splitter or adapter brown-out events. Using a single integrated PMIC instead of discrete bucks reduces EMI complexity in the metal enclosure and frees PCB area for connectivity circuitry and connectors.
Recommandé
Robotics and Motion Control Boards
Robotics controllers pair the AM64x with motor drivers and encoders, requiring a processor power tree isolated from noisy motor rails. The TPS6521855 provides sequence-correct AM64x rails from a 5V adapter or battery bus, while its integrated monitoring flags power faults during stall-induced supply sags. Designers should separate the motor-driver supply plane from the PMIC input and add bulk capacitance, so back-EMF transients do not disturb the 2.2V-to-5.5V input window. The -40C to +105C range covers industrial robot cells and outdoor mobile platforms.
Recommandé
Test and Measurement Instrumentation
Bench and modular instruments built around the AM64x use the TPS6521855 to power the processor section reliably across line-power conditions. The seven-output integration simplifies the power tree documentation and verification required for measurement products, and the -40C to +105C characterization supports calibration-lab temperature ranges. Because the PMIC is factory pre-programmed, engineering teams avoid power-sequencing firmware work and can focus validation effort on the measurement front end. The 48-VQFN footprint also allows reuse of a qualified reference power design across instrument product families.
Recommandé
Human-Machine Interface (HMI) Panels
Industrial HMI touch panels driven by the AM64x benefit from the TPS6521855 single-chip power solution: it powers the processor, DDR, and I/O rails from a 5V or battery input while its industrial temperature rating survives enclosed panel environments. The pre-programmed AM64x sequence prevents display-controller glitches during rapid power cycling common in factory shifts. Integrating seven rails in one 6x6 mm VQFN reduces the power-section area on dense HMI boards where display connectors, touch circuitry, and isolation components compete for space, simplifying layout and EMI containment.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour TPS6521855 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | TPS6521815RSLT | TPS6521815RSLR | TPS65951A1ZGU |
|---|---|---|---|---|
| Package | VQFN-48 (6x6 mm) | VQFN-48 (6x6 mm) - same | VQFN-48 (6x6 mm) - same | VQFN-48 - same package family |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Packaging Option | Reel / Cut Tape | Reel / Cut Tape | Tape & Reel | Reel |
Principaux différenciateurs
- Factory pre-programmed AM64x power sequence (vs TPS6521815RSLT)
- Seven integrated rails in one 6x6 mm VQFN (vs Discrete multi-buck solution)
- Dual input topology support (vs TPS65951A1ZGU)
Notes de conception
Verify the input source topology before layout: the TPS6521855 supports both Li-Ion battery and 5V adapter inputs within its 2.2V to 5.5V range. For battery designs, ensure the minimum battery voltage under load stays within the input window, accounting for cable and connector drops. For adapter designs, add input bulk capacitance to ride through adapter hot-plug transients so the PMIC never falls out of regulation during the AM64x boot sequence.
Place the input and output capacitors for each of the seven rails as close as possible to the VQFN-48 pins, following the PCB layout section of the TI datasheet. Use a solid ground plane under the package and connect the thermal pad to ground with a sufficient via array for heat spreading. Keep the high-current core rail inductor loops minimal to limit EMI near the processor's sensitive memory routing.
The TPS6521855 is factory pre-programmed for the AM64x default power sequence. If your design needs different rail voltages or ordering, do not attempt to re-configure the pre-programmed variant; instead select the pin-compatible TPS6521815 and program its registers over I2C. Migrating between the two later requires no PCB change since they are pin-to-pin compatible per the TI E2E forum.
Informations de conformité
Compliance details not present in provided web data; consult TI product page for RoHS/REACH status.
