UCD9090RGZ - 10-Rail Sequencer/Monitor, 48-VQFN | Texas Instruments
N.º de pieza: UCD9090RGZ ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $7.93 | $7,93 |
| 10 | $7.1 | $71,00 |
| 100 | $6.05 | $605,00 |
| 500 | $5.42 | $2.710,00 |
| 1.000 | $4.79 | $4.790,00 |
UCD9090RGZ Descripción general
A power supply sequencer is a dedicated supervisory IC that turns rails on and off in a defined order, monitors their health after start-up, and reacts to faults. In the broader hierarchy it sits between the PMBus-controlled point-of-load (POL) converters it commands and the system-level power management firmware running on the host. Devices such as the UCD9090RGZ replace discrete supervisory chains with a single programmable, telemetry-rich block that designers can reconfigure over PMBus without a board spin.
Key features include per-rail margining, programmable under-voltage and over-voltage thresholds, fault logging in non-volatile memory, watchdog timer, and pin-selected low-power states via up to three GPIs (eight ACPI-style states). The on-board 2.5 V, 0.5% internal reference gives repeatable ADC-based rail measurements, while the 12-bit ADC provides 0.1% typical resolution across the 0 V-2.5 V range. ACPI support lets the device implement S0/S1/S3/S4/S5-style low-power modes for energy-aware systems.
Architecturally, the UCD9090RGZ pairs an internal ARM7-class controller with the sequencer/monitor state machine. The host configures rails via PMBus commands; the on-chip sequencer then drives external PGOOD/ENABLE/MARGIN pins and reads back rail voltages through the muxed ADC. The 48-VQFN (RGZ) package provides adequate thermal headroom for the 3.3 V supply operation.
Typical applications include FPGA/processor power sequencing in telecom and networking line cards, ATCA/AMC/ATX power rails in servers, industrial PLCs with multiple voltage domains, and any system requiring ACPI-style sleep state coordination. The UCD90SEQ48EVM-560 evaluation module accelerates bring-up using the UCD9090RGZ on a 48-pin socketed board with USB-to-PC GUI.
When designing with this part, place the device close to the regulators it sequences to minimize the loop on the EN/MARGIN/PGOOD traces, and follow TI's recommended BUF layout for the 0.1 uF/1 uF/10 uF decoupling. The fault log, programmable GPI de-bounce, and per-rail fault-response policy should be configured in the Fusion Digital Power Designer GUI before production.
This page consolidates distributor pricing, drop-in alternatives, and design notes not bundled into the manufacturer datasheet, giving engineers a faster path from selection to bring-up.
Alternativas directas para UCD9090RGZ — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
UCD9090RGZR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
UCD9090RGZT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
UCD9090ARGZR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
UCD90120ARGZR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
UCD90124ARGZR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
UCD90320U
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
UCD9090RGZ Especificaciones
| Number of Rails Monitored | 10 |
| Number of GPIs | 8 (3 GPI pin-selected states for ACPI) |
| ADC Resolution | 12-bit |
| Internal Reference | 2.5 V, 0.5% |
| Communication Interface | PMBus / I2C |
| Tensión de alimentación | 3.3 V (typical) |
| ACPI Support | Yes (S0/S1/S3/S4/S5-style states via GPIs) |
| Fault Logging | Yes (non-volatile memory) |
| Watchdog Timer | Yes (programmable) |
| Per-Rail Margining | Yes |
| Programmable Thresholds | Under-voltage / Over-voltage, per rail |
| Temperatura de funcionamiento | -40C to +85C |
| Encapsulado | 48-VQFN (RGZ) 7x7 mm |
| Tipo de montaje | Surface Mount |
| Nivel MSL | 2 (1 year floor life) |
| Estado RoHS | Compliant |
| Evaluation Module | UCD90SEQ48EVM-560 (48-pin socketed board with USB) |
Guía de configuración de pines de UCD9090RGZ 48-vqfn (rgz) 7x7 mm
Configuración de pines para UCD9090RGZ (encapsulado 48-vqfn (rgz) 7x7 mm). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para UCD9090RGZ.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
UCD9090RGZ es adecuado para 6 aplicacións: FPGA / Processor Power Sequencing, ATCA / AMC / Server Power Rails, Industrial PLC Multi-Rail Designs, ACPI-Enabled Computing Platforms, Telecom Baseband Card Sequencing, Test & Measurement Instrumentation.
FPGA / Processor Power Sequencing
The UCD9090RGZ fits ten commonly adopted use cases including FPGA core/IO/DDR/PHY/aux rail sequencing in telecom and networking line cards. Its 10-rail capacity matches typical FPGA power trees where each rail must come up in a vendor-defined order to prevent latch-up. The 12-bit ADC and per-rail margining enable precise under/over-voltage threshold checks at start-up and during steady-state, while PMBus reconfigurability lets the same hardware ship across multiple SKUs. Designers typically place the device near the regulators it sequences to minimize EN/MARGIN/PGOOD loop area, and use the Fusion Digital Power Designer GUI for bring-up.
Recomendado
ATCA / AMC / Server Power Rails
In ATCA and AMC carrier-grade systems, the UCD9090RGZ sequences the multiple 12 V/3.3 V/1.8 V/1.0 V rails required by payload boards. Its ACPI-style pin-selected low-power states (S0/S3/S5) align with management controller commands and enable coordinated sleep transitions across an entire chassis. The on-board fault log captures under-voltage events for post-mortem analysis without burdening the host CPU. When paired with PMBus POL converters (TPS54xxx family) the design achieves full digital telemetry, simplifying ATCA board-level compliance testing and field diagnostics.
Recomendado
Industrial PLC Multi-Rail Designs
Industrial PLCs typically isolate logic, analog, motor-driver, and communication domains on separate voltage rails, all of which the UCD9090RGZ sequences. Its -40C to +85C industrial temperature rating and ACPI-style sleep modes support factory-floor duty-cycling to reduce energy and prolong life. The integrated 12-bit ADC continuously verifies that analog rails remain within tolerance during noisy motor-switching events, allowing the PLC controller to react before downstream ADC readings degrade. The 48-VQFN (RGZ) 7x7 mm footprint sits comfortably on a 4-layer PLC base board.
Recomendado
ACPI-Enabled Computing Platforms
The UCD9090RGZ implements ACPI-style low-power states via three GPI pins that select up to eight system states (S0/S1/S3/S4/S5). When the host chipset signals a sleep transition, the UCD9090RGZ orchestrates a coordinated rail-down sequence and verifies each rail's discharge before the next stage. This eliminates software race conditions in power-down handshakes. The on-board non-volatile fault log retains brownout history even through full power loss, accelerating field debug and reducing RMA cost in embedded and edge-computing platforms.
Recomendado
Telecom Baseband Card Sequencing
Telecom baseband cards require deterministic sequencing of DSP, framer, and clock generator supplies. The UCD9090RGZ provides per-rail enable/margin outputs and reads back rail voltages for closed-loop verification during commissioning. Its PMBus interface exposes telemetry to the management processor, enabling remote health monitoring without dedicated analog sense paths. With 10-rail capacity, the device typically handles the entire baseband rail tree including core, IO, DDR, PLL, and PHY supplies, simplifying the BOM versus discrete supervisors.
Recomendado
Test & Measurement Instrumentation
Benchtop and ATE-grade instrumentation requires deterministic power-up to avoid spurious signals at first measurement after cold start. The UCD9090RGZ sequences analog, digital, and high-voltage rails in a vendor-defined order, while the 12-bit ADC verifies each rail reaches its setpoint within tolerance. Combined with per-rail margining, the same hardware can be reused for incoming-quality test routines, where each rail is swept to verify the DUT operates correctly at the production corners. The 48-VQFN footprint allows placement adjacent to the regulators it commands.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para UCD9090RGZ — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | UCD9090RGZR | UCD9090ARGZR | UCD90120ARGZR |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 48-VQFN (RGZ) 7x7 mm | 48-VQFN (RGZ) - same | 48-VQFN (RGZ) - same | 48-VQFN (RGZ) - same |
| Rail Count | 10 rails | 10 rails | 10 rails | 26 rails |
| GPI Count | 8 (3 GPI pin-selected states) | 8 | 8 | 12 |
| Communication Interface | PMBus / I2C | PMBus / I2C | PMBus / I2C | PMBus / I2C |
| ACPI Support | Yes (S0/S1/S3/S4/S5-style) | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | |
| Fault Logging (non-volatile) | Yes | Yes | Yes (per-rail black-box) |
Diferenciadores clave
- Pin-compatible upgrade path to higher-rail-count family members (frente a UCD90120ARGZR)
- Lower cost for compact 10-rail designs (frente a UCD90120ARGZR)
- ACPI pin-selected low-power states on three GPIs (frente a UCD9090RGZR)
- Integrated 12-bit ADC with 2.5 V 0.5% internal reference (frente a Discrete supervisor chains)
Notas de diseño
Place the UCD9090RGZ close to the regulators it sequences to keep EN/MARGIN/PGOOD traces short and avoid false fault triggers from coupling. Follow TI's recommended 0.1 uF + 1 uF + 10 uF decoupling scheme at the 3.3 V supply pin; place the smallest value closest to the package. The 48-VQFN (RGZ) 7x7 mm thermal pad must be soldered to a continuous ground pour for thermal and electrical performance, with at least eight thermal vias to inner layers.
Do not exceed the 3.3 V supply rating on V33 pin; the device does not internally regulate. Ensure PMBus pull-ups (typically 2.2-10 kohm) match the host bus voltage (1.8 V or 3.3 V) and do not share pull-ups with incompatible I2C segments. Configure the GPI de-bounce in the Fusion Digital Power Designer GUI to avoid false ACPI state transitions on noisy edges during motor or solenoid switching events.
Although the UCD9090RGZ itself draws only tens of milliamps, it must be sequenced before or after the rails it monitors per system design. In designs where the sequencer is the first rail to come up (recommended for fault isolation), use a small always-on LDO such as TPS7A47 to derive its 3.3 V from a higher standby rail. Validate PMBus clock stretching compatibility with the host controller before committing the BOM, especially with low-end MCUs.
Información de cumplimiento
RoHS and REACH compliant per TI product page; not AEC-Q100 qualified - this part targets industrial/telecom, not automotive. Pin-finish is lead-free matte tin over NiPdAu leadframe.
