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Vishay Siliconix SIC453ED-T1-GE3
- Part No.:
- SIC453ED-T1-GE3
- Manufacturer:
- Vishay Siliconix
- Package:
- 34-PowerWFQFN
- Datasheet:
-
SIC453ED-T1-GE3.pdf
- Description:
- IC REG BCK ADJ POWERPAK MLP34-57
- Quantity:
- Payment:
- Shipping:
Inventory:5,421
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Product details
Overview
SIC453ED-T1-GE3 from Vishay Siliconix is a PMBus 1.3–compliant, non-isolated synchronous buck DC/DC converter with integrated 4 mΩ high-side and 1.4 mΩ low-side MOSFETs, delivering up to 15 A continuous output current from a 4.5 V to 20 V input, adjustable 0.3 V–12 V output voltage, and switching frequency up to 1.5 MHz - deployed in server point-of-load and DDR memory power delivery.
For engineers reviewing the SIC453ED-T1-GE3 datasheet, SIC453ED-T1-GE3 pinout, SIC453ED-T1-GE3 application, or SIC453ED-T1-GE3 equivalent, key selection considerations include its 15 A rated current (vs. 25 A SiC451/40 A SiC450), MLP34-57 package footprint, PMBus-configurable fault thresholds, differential remote sensing, and voltage-mode COT control for ultrafast transient response in high-density computing systems.
Technical Context
The SIC453ED-T1-GE3 implements a voltage-mode constant-on-time (VM-COT) control architecture with internal ramp generation and error amplifier compensation, enabling stable operation with any output capacitor type and eliminating need for external ESR networks. Its integrated power stage uses RDS(on)-based valley current sensing for pulse-by-pulse overcurrent protection.
Operation is firmware-driven and field-upgradable via PMBus 1.3 interface (1 MHz bus speed), supporting >50 commands including VOUT adjustability at 2 mV resolution, programmable OVP/UVP/OTP thresholds, and synchronization modes (standalone, master, or slave in-phase/180° out-of-phase) using the RT/SYNC pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 20 V - supports wide-input industrial and telecom rails without pre-regulation |
| Output Current Rating | 15 A continuous - validated for SiC453 variant per ordering table; lower thermal stress vs. SiC451/SiC450 |
| Output Voltage Range | 0.3 V to 12 V - digitally adjustable via PMBus or resistor-programmed VSET pin with 2 mV resolution |
| Switching Frequency | 300 kHz to 1.5 MHz - set by RT resistor or overridden via PMBus; enables optimization of size vs. efficiency |
| Efficiency Peak | 98 % - achieved at mid-load with 12 V input and 3.3 V/5 V outputs; enabled by low-RDS(on) MOSFETs and diode emulation mode |
| Accuracy (VOUT) | ±1 % over temperature; ±0.5 % at 3.3 V/1.8 V, TA = 25 °C - ensures tight regulation for CPU/GPU core rails |
| PMBus Compliance | PMBus 1.3 - supports telemetry (VOUT, IOUT, PIN, temperature), fault logging, and dynamic configuration without host firmware changes |
Pinout & Package
Package: PowerPAK® MLP34-57 (5 mm × 7 mm, 34-pin exposed pad), lead (Pb)-free, RoHS-compliant, with thermal resistance RthJ-PCB = 5 °C/W for high-power density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN (1,2,3,34) | Power input supply rail | Connects to 4.5–20 V input; feeds high-side MOSFET and bootstrap circuit; requires local bulk capacitance |
| PH (4) | Phase node | Switching node between high-side and low-side MOSFETs; critical for layout low-inductance routing |
| BOOT (6) | Bootstrap supply | Provides gate drive voltage for high-side MOSFET referenced to PH; requires 0.1 µF ceramic capacitor to PH |
| VSEN+ / VSEN− (11,12) | Differential remote sense inputs | Enable precise load-point regulation by compensating for PCB IR drop; must be routed differentially near output capacitor |
| PGOOD (13) | Open-drain power-good indicator | Signals VOUT within ±5 % of setpoint (configurable); requires 10 kΩ pull-up to VDD for system sequencing |
| RT/SYNC (17) | Frequency setting & clock sync | Resistor-to-AGND sets base frequency; also accepts/sends sync clock in master/slave configurations |
| SDA / SCL (19,20) | PMBus data/clock | I²C-compatible interface for configuration, telemetry, and fault reporting; supports hot-plug and multi-device addressing |
| EN (21) | Enable control | Active-high logic input (0–5.5 V); no sequencing required with PVIN/VDD; enables system-level power sequencing |
Key Features
| Feature | Design Value |
|---|---|
| Integrated power stage | 4 mΩ high-side + 1.4 mΩ low-side MOSFETs - eliminates external FETs and drivers, reducing BOM count and layout area |
| VM-COT control | No external compensation required - internal ramp and error amplifier ensure stability with ceramic-only output capacitors |
| Light-load efficiency mode | Diode emulation + frequency foldback - maintains >85 % efficiency at 1 % load, critical for idle-state server power budgets |
| Differential remote sensing | ±200 mV common-mode range on VSEN− - rejects noise and compensates for up to 200 mV PCB voltage drop at full 15 A load |
| Configurable protection suite | PMBus-programmable OCP, OVP, UVP, OTP, VIN-OVP/UVP, tON-MAX - enables custom fault response without hardware change |
Applications
| Server Core Voltage Regulation | DDR4/DDR5 Memory Power |
|---|---|
|
Use Scenario: Regulating 1.2 V or 1.1 V core supply for dual-socket Xeon or EPYC processors in 1U/2U rack servers. IC Role / Device Role / Timing Role: Primary point-of-load (POL) regulator delivering 15 A peak current with <10 µs transient response to CPU burst loads. Use Value: Tight ±0.5 % output accuracy at 1.2 V and differential sensing ensure stable operation under dynamic DVFS transitions without guardbanding. |
Use Scenario: Supplying VDDQ (1.2 V) and VPP (2.5 V) rails for DDR4/DDR5 DIMMs in storage controllers and AI accelerators. IC Role / Device Role / Timing Role: High-bandwidth POL converter synchronized via RT/SYNC to memory controller clock for reduced EMI. Use Value: 1.5 MHz max switching frequency allows small 0.22 µH inductors and 22 µF ceramic output caps, minimizing board space per channel. |
| Telecom Baseband Processing | Network Switch ASIC Power |
|
Use Scenario: Powering FPGA-based baseband units in 5G macrocells requiring fast load-step response and telemetry for thermal management. IC Role / Device Role / Timing Role: Digitally configurable POL with real-time IOUT/VOUT/PIN reporting via PMBus for predictive thermal throttling. Use Value: Integrated NVM stores default configuration (VOUT, frequency, fault thresholds), enabling plug-and-play deployment without host initialization. |
Use Scenario: Delivering 0.8 V @ 12 A to multi-core network switch ASICs in enterprise chassis switches with strict ripple limits. IC Role / Device Role / Timing Role: Synchronous buck regulator operating in CCM with 600 kHz default frequency, optimized for low-noise spectral profile. Use Value: Ultrafast transient response (<5 µs recovery) and ±1 % line/load regulation prevent timing violations during packet-burst traffic surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS546D24RQFT | 40 A rating, 2.95–16 V input, PMBus 1.3, but uses external MOSFETs and requires compensation network | Higher current capability; suited for single-rail ASICs where layout flexibility outweighs integration benefit | Select when >15 A is needed or when discrete FET selection is required for thermal partitioning |
| ISL91302BFRZ-T7A | 2-phase, 12 A total, 2.5–5.5 V input, no PMBus, analog-only control with external resistors | Limited to low-voltage, low-power SoCs; lacks telemetry, NVM, and remote sensing | Select only for cost-sensitive, non-telemetry consumer applications with fixed 0.6–1.2 V outputs |
Compared with TPS546D24RQFT and ISL91302BFRZ-T7A, the SIC453ED-T1-GE3 delivers higher integration (integrated FETs, internal compensation), richer digital control (full PMBus telemetry and configurability), and superior precision (±0.5 % at 1.8 V) - making it optimal for high-reliability, high-density infrastructure power where firmware-upgradable features and minimal external components are critical.
Availability
SIC453ED-T1-GE3 is available at Aetrix Electronics and suitable for server, telecom, and networking applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for SIC453ED-T1-GE3 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
Vishay Siliconix designs high-performance power ICs and discrete semiconductors, emphasizing efficiency, integration, and reliability for demanding industrial and computing applications.
The SiC45x family - including SIC453ED-T1-GE3 - was engineered specifically for high-current, digitally managed point-of-load conversion in cloud infrastructure, where PMBus configurability, ultrafast transient response, and compact MLP packaging reduce system size and improve power delivery intelligence.
FAQ
What is the maximum continuous output current supported by the SIC453ED-T1-GE3?
The SIC453ED-T1-GE3 is rated for 15 A continuous output current, as confirmed in the Vishay ordering information table and electrical specifications. This rating applies across the full operating temperature range (–40 °C to +85 °C ambient) and input voltage range (4.5 V to 20 V), with derating based on thermal conditions and PCB layout. It is distinct from the 25 A SiC451 and 40 A SiC450 variants in the same family.
Does the SIC453ED-T1-GE3 require external compensation components?
No, the SIC453ED-T1-GE3 does not require external compensation components. Its voltage-mode constant-on-time (VM-COT) architecture integrates all necessary ramp generation and error amplifier compensation circuitry, including internal RCOMP/CCOMP elements. Stability is guaranteed with any output capacitor type - including low-ESR ceramic - eliminating the need for external RC networks or ESR-based bulk capacitors.
How is output voltage configured on the SIC453ED-T1-GE3?
Output voltage on the SIC453ED-T1-GE3 can be configured either via the VSET pin (using a resistor to AGND per the lookup table) or digitally via PMBus command. The VSET method supports standard voltages from 0.6 V to 12 V with corresponding fault thresholds; PMBus configuration offers finer 2 mV resolution and independent adjustment of warning/fault limits. For SIC453ED-T1-GE3, VSET = open or short yields 0.6 V default.
What protection features are implemented in the SIC453ED-T1-GE3?
The SIC453ED-T1-GE3 implements pulse-by-pulse overcurrent protection (OCP), output overvoltage (OVP) and undervoltage (UVP) protection, input over/undervoltage (VIN-OVP/UVP), overtemperature protection (OTP) with hysteresis, and tON-MAX fault limiting. All thresholds - including OCP limit (21 A default), OVP (115 % VOUT), and OTP (125 °C) - are programmable via PMBus, enabling application-specific fault behavior without hardware modification.
Is the SIC453ED-T1-GE3 pin-compatible with other SiC45x family members?
Yes, the SIC453ED-T1-GE3 shares identical pinout, package (MLP34-57), and footprint with SiC450ED-T1-GE3 and SiC451ED-T1-GE3, enabling direct PCB reuse across 15 A, 25 A, and 40 A variants. However, current capability, thermal performance, and certain PMBus-configurable parameters (e.g., default OCP threshold) differ per variant - requiring firmware reconfiguration when swapping devices in the same design.
SIC453ED-T1-GE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- microBUCK®
- Package/Case:
- 34-PowerWFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 0.3V
- Voltage - Output (Max):
- 12V
- Current - Output:
- 15A
- Frequency - Switching:
- 300kHz ~ 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerPAK® MLP34-57
SIC453ED-T1-GE3 FAQ
1.How can I place an order for SIC453ED-T1-GE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIC453ED-T1-GE3 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 SIC453ED-T1-GE3 reliable?
The price and inventory of SIC453ED-T1-GE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SIC453ED-T1-GE3 is usually 5 days.
3.What payment methods are accepted for SIC453ED-T1-GE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIC453ED-T1-GE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIC453ED-T1-GE3?
SIC453ED-T1-GE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIC453ED-T1-GE3 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 SIC453ED-T1-GE3?
For technical support, including SIC453ED-T1-GE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIC453ED-T1-GE3 requirements.
6.How does Aetrix verify that SIC453ED-T1-GE3 is sourced from the original manufacturer or authorized distributors?
All SIC453ED-T1-GE3 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 SIC453ED-T1-GE3 meets industry standards.
7.What is the process for return or replacement of SIC453ED-T1-GE3?
All SIC453ED-T1-GE3 units undergo pre-shipment inspection (PSI). If there is an issue with SIC453ED-T1-GE3, 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 SIC453ED-T1-GE3 part is unused and in its original packaging.
Return procedure for SIC453ED-T1-GE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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