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Renesas ZSPM1511ZA1W0
- Part No.:
- ZSPM1511ZA1W0
- Manufacturer:
- Renesas
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ZSPM1511ZA1W0.pdf
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- IC REG PQFN
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Product details
Overview
ZSPM1511ZA1W0 from Integrated Device Technology is a true-digital PWM controller for single-phase, single-rail point-of-load (POL) DC/DC buck converters, delivering 0.85V output at up to 40A with 680nH inductance support, -40°C to +125°C operating range, and QFN24 (4mm × 4mm) package. It implements State-Law Control™ and Tru-sample Technology™ for high-stability digital regulation in FPGA and ASIC core power supplies.
For engineers reviewing the ZSPM1511ZA1W0 datasheet, ZSPM1511ZA1W0 pinout, ZSPM1511ZA1W0 application, or ZSPM1511ZA1W0 equivalent, key selection criteria include its factory-configured 0.85V output, user-selectable over-current threshold via CONFIG0, digital compensator tuning via CONFIG1, and optimized interoperability with IDT DrMOS power stages.
Technical Context
The ZSPM1511ZA1W0 integrates an adaptive digital control loop with State-Law Control™ architecture that dynamically adjusts PWM duty cycle based on real-time current-sense feedback (via ISNSP/ISNSN), voltage error (VFBP/VFBN), and internal temperature sensing. Its control path includes a 12-bit ADC for current/voltage monitoring and on-chip OTP NVM for storing compensation settings.
It operates from a single 5V supply (VDD50: 4.75–5.25V), supports input rail monitoring (VIN: 10.8–13.2V), and delivers precise 0.85V output using external resistive feedback. Fault handling includes hardware-based over-voltage (VIN/VOUT), under-voltage (VIN/VOUT), over-temperature, and over-current protection with configurable restart delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 0.85V - factory-programmed for CPU/FPGA core rails requiring tight tolerance and fast transient response. |
| Inductance Support | 680nH - matched to low-DCR, high-current POL inductors for optimal efficiency and phase margin with ZSPM1511ZA1W0's digital compensator. |
| Operating Temperature | -40°C to +125°C - enables deployment in telecom base stations and industrial servers without derating. |
| Supply Voltage (VDD50) | 4.75V to 5.25V - powers internal logic and analog blocks from standard 5V system rail, eliminating auxiliary LDOs. |
| POL Input Range (VIN) | 10.8V to 13.2V - compatible with 12V intermediate bus architectures common in datacenter and networking equipment. |
| Package | 24-pin QFN, 4mm × 4mm - thermally enhanced footprint supporting >3W dissipation and automated reflow assembly. |
| Fault Protections | OV/UV on VIN & VOUT, OT, OC, and overloaded startup - autonomous shutdown with programmable restart delay avoids system latch-up. |
Pinout & Package
24-pin lead-free QFN package (4mm × 4mm, 0.5mm pitch) with exposed thermal pad; RoHS compliant and rated for industrial temperature operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input voltage sense | Monitors 10.8–13.2V intermediate bus for UV/OV protection and sequencing coordination. |
| VDD50 | 5V logic supply | Primary power for digital core, ADC, and PWM generator; requires local 4.7µF ceramic decoupling. |
| VFBP / VFBN | Differential output voltage feedback | High-precision sensing of regulated 0.85V output; rejects common-mode noise in high-dI/dt POL environments. |
| ISNSP / ISNSN | Differential current sense inputs | Connects to DCR of 680nH inductor for accurate average current measurement and OC detection. |
| CONFIG0 / CONFIG1 | Configuration select pins | Set over-current threshold (CONFIG0) and digital compensator mode/slew rate (CONFIG1) via resistor dividers or GPIO. |
| PGOOD | Power-good status output | Open-drain signal indicating stable 0.85V output within ±1% and absence of active faults. |
| THSHDN | Thermal shutdown input | Active-low override enabling external thermal management or system-level fault escalation. |
Key Features
| Feature | Design Value |
|---|---|
| State-Law Control™ (SLC) | Real-time, non-linear PWM adjustment based on instantaneous current and voltage error-enables <10µs load-step recovery without external tuning. |
| Tru-sample Technology™ | Synchronized sampling of current and voltage at PWM switching edge-eliminates timing skew and improves loop stability across temperature and load. |
| User-configurable OC threshold | Four selectable over-current limits via CONFIG0 pin-matches ZSPM1511ZA1W0 to diverse DrMOS FET RDS(on) and PCB trace resistance. |
| Digital compensator modes | Four discrete compensation profiles (Comp0–Comp3) selected by CONFIG1-optimizes phase margin for 680nH inductors with varying capacitor ESR/ESL. |
| Integrated fault handling | Hardware-decoded OV/UV/OT/OC events trigger immediate PWM disable and PGOOD deassertion-no firmware or host intervention required. |
Applications
| Telecom Base Stations | Servers & Storage Processors |
|---|---|
|
Use Scenario: Powering FPGA transceiver banks and fronthaul processing units in 5G macro base stations with strict thermal and transient requirements. IC Role / Device Role / Timing Role: Single-phase digital PWM controller regulating 0.85V core supply with sub-10µs load-step response and integrated thermal foldback. Use Value: Eliminates need for external DACs, op-amps, or discrete protection ICs-reducing BOM count by ≥7 components per rail while maintaining <±1% output accuracy. |
Use Scenario: Delivering tightly regulated 0.85V to multi-core Xeon or AMD EPYC processors in 1U rack servers with 12V intermediate bus. IC Role / Device Role / Timing Role: Digital POL controller managing dynamic current demands up to 40A with adaptive loop compensation for varying load capacitance. Use Value: Achieves >92% peak efficiency at 20A with IDT ZSPM90xx DrMOS, reducing heat sink size by 35% versus analog controllers. |
| Network Routers | Industrial PLC CPUs |
|
Use Scenario: Supplying line-card ASICs in carrier-grade routers where EMI, reliability, and remote fault logging are critical. IC Role / Device Role / Timing Role: True-digital PWM controller providing PGOOD signaling, VIN/VOUT monitoring, and I²C-accessible fault registers for system health reporting. Use Value: Enables deterministic power sequencing and black-box fault capture-reducing field failure diagnostics time by >60%. |
Use Scenario: Powering ARM Cortex-A series CPUs in ruggedized industrial PLCs operating continuously at 85°C ambient. IC Role / Device Role / Timing Role: High-temperature-rated POL controller with over-temperature protection and 125°C junction limit-ensuring uninterrupted operation during thermal stress. Use Value: Supports extended lifetime (>10 years) without derating, validated per JEDEC JESD22-A108F high-temp operating life testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP8765GQ-Z | Analog-based multi-phase controller with external compensation; lacks integrated ADC, digital state machine, or Tru-sample sampling. | Requires external current-sense amplifier and discrete protection circuitry; suited for cost-sensitive, lower-performance POLs. | Select MP8765GQ-Z only when digital loop adaptability, sub-10µs transient response, or factory pre-configuration for 0.85V are not required. |
| TPS546D24ARVFT | Single-phase digital PWM with PMBus interface and telemetry; supports programmable VOUT but not factory-trimmed 0.85V variant. | Requires host MCU configuration at boot; lacks CONFIG0/CONFIG1 hardware strapping for standalone operation. | Choose TPS546D24ARVFT if PMBus telemetry, voltage margining, or dynamic VOUT adjustment are needed-ZSPM1511ZA1W0 is preferred for plug-and-play 0.85V deployment. |
Compared with MP8765GQ-Z and TPS546D24ARVFT, ZSPM1511ZA1W0 delivers faster transient immunity and lower system-level component count due to its integrated digital control loop, factory-set 0.85V, and hardware-configurable protection-making it optimal for space-constrained, high-reliability POLs where development time and thermal density are critical.
Availability
ZSPM1511ZA1W0 is available at Aetrix Electronics and suitable for telecom base stations, server processor rails, and industrial PLC CPU supplies requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for ZSPM1511ZA1W0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Integrated Device Technology (IDT), now part of Renesas Electronics, designs high-performance timing, memory interface, and power management ICs for datacenter, communications, and industrial markets.
ZSPM1511ZA1W0 belongs to the ZSPM15xx family of true-digital PWM controllers engineered specifically for high-current, non-isolated POL conversion in FPGA, ASIC, and processor core supplies-emphasizing stability, configurability, and integration.
FAQ
What is the configured output voltage of ZSPM1511ZA1W0?
ZSPM1511ZA1W0 is factory pre-programmed for a fixed 0.85V output voltage, optimized for CPU and FPGA core rails. This value is stored in on-chip OTP memory and cannot be altered via software or external pins-ensuring consistent performance without configuration overhead. The 0.85V setting aligns with JEDEC JEP147B specifications for advanced logic cores and is verified across -40°C to +125°C.
Which inductor value is ZSPM1511ZA1W0 specifically calibrated for?
ZSPM1511ZA1W0 is calibrated for use with a 680nH inductor, as explicitly stated in the ordering information and device-specific system parameters section of the datasheet. This inductance value determines the default digital compensator coefficients and current-sense gain scaling. Using other inductors requires reconfiguring CONFIG1 and verifying loop stability via load-transient testing.
Does ZSPM1511ZA1W0 require an external microcontroller to operate?
No, ZSPM1511ZA1W0 operates autonomously without host MCU intervention. All control functions-including PWM generation, fault detection, and compensation-are handled by its integrated digital state machine and on-chip ADC. Configuration is performed via hardware strapping (CONFIG0/CONFIG1 pins), and startup sequencing is self-managed. No firmware, I²C, or PMBus interface is required for basic operation.
How does ZSPM1511ZA1W0 implement over-current protection?
ZSPM1511ZA1W0 performs continuous differential current sensing via ISNSP/ISNSN pins connected to the DCR of the 680nH inductor. Over-current threshold is selected by CONFIG0 (four discrete levels), and detection triggers immediate PWM disable, PGOOD deassertion, and a hardware-controlled restart delay. This protection is fully analog-hardware based-no software latency or ADC conversion delay affects response time.
Is ZSPM1511ZA1W0 compatible with IDT DrMOS power stages?
Yes, ZSPM1511ZA1W0 is co-designed and characterized for optimal performance with IDT's ZSPM90xx DrMOS devices (e.g., ZSPM9000, ZSPM9015). The datasheet confirms efficiency curves and transient response data using these pairings, and the digital control loop compensates for DrMOS gate drive timing and RDS(on) variation-achieving >92% peak efficiency and <10µs load-step recovery in reference designs.
ZSPM1511ZA1W0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
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- Topology:
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- Output Type:
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- Voltage - Input (Min):
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- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
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- Current - Output:
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ZSPM1511ZA1W0 FAQ
1.How can I place an order for ZSPM1511ZA1W0 through Aetrix?
Please submit a Request for Quotation (RFQ) for ZSPM1511ZA1W0 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ZSPM1511ZA1W0 reliable?
The price and inventory of ZSPM1511ZA1W0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZSPM1511ZA1W0 is usually 5 days.
3.What payment methods are accepted for ZSPM1511ZA1W0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZSPM1511ZA1W0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZSPM1511ZA1W0?
ZSPM1511ZA1W0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZSPM1511ZA1W0 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ZSPM1511ZA1W0?
For technical support, including ZSPM1511ZA1W0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZSPM1511ZA1W0 requirements.
6.How does Aetrix verify that ZSPM1511ZA1W0 is sourced from the original manufacturer or authorized distributors?
All ZSPM1511ZA1W0 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ZSPM1511ZA1W0 meets industry standards.
7.What is the process for return or replacement of ZSPM1511ZA1W0?
All ZSPM1511ZA1W0 units undergo pre-shipment inspection (PSI). If there is an issue with ZSPM1511ZA1W0, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ZSPM1511ZA1W0 part is unused and in its original packaging.
Return procedure for ZSPM1511ZA1W0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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