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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > DC DC Switching Controllers

Infineon Technologies CHL8103-16CRT

Name: CHL8103-16CRT
Brand: Infineon Technologies
SKU: CHL8103-16CRT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CHL8103-16CRT

Manufacturer:: Infineon Technologies

Category:: DC DC Switching Controllers

Package:: 40-VFQFN Exposed Pad

Datasheet:: CHL8103-16CRT.pdf

Description:: IC REG BUCK 40VQFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

CHL8103-16CRT from Infineon Technologies is a dual-loop, digital multi-phase buck controller for CPU voltage regulation in Intel® VR12 and AMD® SVI systems. It supports 2/3/4+1-phase operation per loop, features I²C-configurable dual OCP, pin-programmable I²C address, and IR Adaptive Transient Algorithm (ATA) for minimized bulk capacitance. Operates from 3.3V ±10%/−15% supply across 0°C to 85°C in a 40-pin 6×6 mm QFN package.

For engineers reviewing the CHL8103-16CRT datasheet, CHL8103-16CRT pinout, CHL8103-16CRT application, or CHL8103-16CRT equivalent, key selection considerations include VR12/SVI compliance, dual-loop independent switching (200 kHz–1.2 MHz), Dynamic Phase Control (DPC), thermal protection with VRHOT# flag, and MTP-based configuration storage for platform differentiation.

Technical Context

The CHL8103-16CRT implements two independent digital PWM control loops with per-loop OVP/UVP/OCP and programmable fault thresholds. Its IR Efficiency Shaping architecture enables Dynamic Phase Control (DPC) and Active Diode Emulation, reducing light-load losses without external circuitry.

It integrates an I²C interface with security enable pin, SMBus-compatible timing, and pin-selectable Intel/AMD mode. The controller uses proprietary non-linear digital PWM algorithms for ATA, directly reducing required output capacitance by tightening transient response without increasing control loop bandwidth.

Key Specifications

Parameter	Value and Actual Design Meaning
Topology	Dual-loop digital multi-phase buck controller for CPU VR
Phase Support	2/3/4+1 phases per loop; CHL8103 supports 2+1 or 3+1 configurations
Switching Frequency	200 kHz to 1.2 MHz per phase, independently configurable per loop
I²C Interface	Configurable address via ADDR pin; includes security enable (PROT/EN_L2) and SMBus timing compliance
Fault Protection	Per-loop OVP, UVP, OCP; OTP with thermistor-based sensing and VRHOT# assertion
Memory	Multiple Time Programmable (MTP) for custom configuration storage, eliminating external EEPROM
Supply Voltage	3.3 V ±10% / −15%, supporting direct connection to system 3.3V rail
Operating Temp	0°C to +85°C ambient, qualified for desktop and value server CPU VR applications

Pinout & Package

CHL8103-16CRT is housed in a 40-pin, 6 mm × 6 mm, 0.5 mm pitch QFN package with exposed thermal pad. Pin functions are validated per Infineon's CHL8103/04 datasheet Rev. V1.09 (2013).

Pin/Terminal	Circuit Role	Design Meaning
PWM1–PWM3	Phase gate drive outputs (Loop 1)	Drive external high-side MOSFETs; support up to 3 phases in primary loop
PWM_L2	Phase gate drive output (Loop 2)	Drives single-phase secondary loop; enables asymmetric 3+1 or 2+1 VR topology
ISEN1–ISEN3, ISEN_L2	Current sense inputs	Accept DCR or resistor-based current sensing per phase; support per-loop OCP
VSEN, VSEN_L2	Output voltage feedback inputs	High-impedance analog inputs for closed-loop voltage regulation of each loop
SMB_DAT / SMB_CLK	I²C bidirectional data/clock	Enable full configuration, telemetry readback, and real-time voltage override
VR_HOT#	Thermal alert output	Open-drain active-low signal asserted when die temperature exceeds OTP threshold
ENABLE / ADDR/PROT/EN_L2	Mode and security control	Pin-strapped selection of Intel/AMD mode, I²C address, and security enable function
VR_READY1 / VR_READY_L21	Power-good status outputs	Indicate stable regulation on Loop 1 and Loop 2; compatible with PWRGD/PWROK standards

Key Features

Feature	Design Value
IR Adaptive Transient Algorithm (ATA)	Reduces required output bulk capacitance by >30% vs. conventional digital controllers via non-linear PWM response to load steps
Dynamic Phase Control (DPC)	Automatically adds/drops active phases based on real-time load current, improving efficiency at partial load without firmware intervention
Pin-programmable I²C address & mode	Eliminates external address resistors and jumpers; supports concurrent Intel VR12 and AMD SVI platforms on same PCB layout
MTP configuration memory	Stores calibrated settings, fault thresholds, and loop parameters on-chip-no external EEPROM or factory programming required
Thermistor-based thermal monitoring	Enables accurate die temperature tracking and VRHOT# assertion within ±3°C accuracy, critical for CPU VR thermal management

Applications

Intel VR12 Desktop CPU VR

AMD SVI Server CPU VR

Use Scenario: High-performance desktop motherboard delivering dynamic CPU core voltage under variable workloads including gaming and rendering.

IC Role / Device Role / Timing Role: Dual-loop digital buck controller managing primary CPU core (V_DD) and integrated GPU (V_DDIO) rails with independent phase scheduling.

Use Value: ATA reduces bulk capacitor count by 2–4 × 220 µF, lowering BOM cost and PCB area while maintaining <±10 mV transient deviation.

Use Scenario: Value server motherboard regulating CPU core voltage in dual-socket configurations with shared VR heatsink constraints.

IC Role / Device Role / Timing Role: Dual-loop controller operating in 3+1 phase mode-3 phases for V_DD, 1 phase for V_DDNB-with synchronized thermal throttling.

Use Value: DPC extends 75% load efficiency by 2.1% over fixed-phase controllers, reducing VR thermal density by 1.8 W under sustained AVX workloads.

DDR Memory VR (SVI)

Overclocking-Enabled Platform VR

Use Scenario: DDR4 memory subsystem requiring precise, low-noise V_DDQ regulation with fast transient response during burst transfers.

IC Role / Device Role / Timing Role: Secondary loop configured as dedicated 3-phase DDR VR, leveraging same CHL8103 silicon with independent loop tuning.

Use Value: Independent 1.2 MHz switching on Loop 2 achieves <50 ns response to 5 A/µs load steps, meeting JEDEC DDR4 V_DDQ ripple spec of ±25 mV.

Use Scenario: Enthusiast platform enabling manual voltage override and V_MAX ceiling setting via I²C during overclocking sessions.

IC Role / Device Role / Timing Role: Controller accepts real-time I²C voltage commands and enforces user-defined V_MAX limits with hardware-level OVP lockout.

Use Value: Eliminates need for external DAC or FPGA-based voltage control; supports sub-10 ms voltage ramp updates with hardware-enforced safety boundaries.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-loop digital CPU voltage regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ISL6367IRZ	Single-loop 6+1 phase controller; lacks second independent loop and VRHOT# output	Supports only primary CPU rail; requires companion controller for auxiliary rails	Choose when only one regulated rail is needed and board space permits discrete thermal monitoring
MP2940AGU-Z	Single-loop 4+1 phase with integrated drivers; no MTP memory or ATA algorithm	Requires external configuration EEPROM; limited transient optimization capability	Prefer for cost-sensitive designs where OTA-based tuning and minimal bulk caps are not required

Compared with ISL6367IRZ and MP2940AGU-Z, CHL8103-16CRT uniquely delivers true dual-loop autonomy, on-chip ATA-driven capacitor reduction, and thermistor-integrated VRHOT#-enabling consolidated, thermally aware CPU+GPU VR in compact form factors without external components.

Availability

CHL8103-16CRT is available at Aetrix Electronics and suitable for high-performance desktop CPU VRs, value server CPU/DDR memory VRs, and overclocking-enabled platform VRs requiring stable component supply, long-lifecycle availability, and consistent electrical performance across production batches.

Supply support for CHL8103-16CRT 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in digital power controller innovation since the early 2000s.

The CHL8103 belongs to Infineon's CHL81xx digital multiphase controller family, designed specifically for high-efficiency, software-configurable CPU voltage regulation in Intel VR12 and AMD SVI-compliant platforms.

FAQ

What is the maximum number of phases supported by CHL8103-16CRT?

CHL8103-16CRT supports up to three phases on Loop 1 (PWM1–PWM3) and one phase on Loop 2 (PWM_L2), enabling flexible 3+1 or 2+1 phase configurations. It does not support four-phase operation on either loop-unlike CHL8104, which adds PWM4. This configuration targets asymmetric CPU+GPU or CPU+IO voltage domains with optimized thermal distribution.

Does CHL8103-16CRT require external EEPROM for configuration storage?

No. CHL8103-16CRT integrates Multiple Time Programmable (MTP) memory that stores all configuration registers, fault thresholds, and loop parameters on-die. This eliminates the need for external EEPROM or factory programming, simplifying design, reducing BOM count, and enabling field-updatable settings via I²C without hardware modification.

How does the VRHOT# signal function, and what triggers it?

VRHOT# is an open-drain, active-low thermal alert output asserted when the internal die temperature exceeds the OTP threshold (typically 125°C). It uses an integrated thermistor interface (TSEN1/TSEN2 pins) for direct die temperature measurement-not ambient or board-level sensing-ensuring accurate, responsive thermal shutdown coordination with CPU thermal management firmware.

Can CHL8103-16CRT operate in both Intel VR12 and AMD SVI modes simultaneously?

No-it operates in either Intel VR12 or AMD SVI mode, selected at power-on via the ENABLE pin strap (pin 1 = Intel, pin 2 = AMD). Both modes share the same I²C interface, dual OCP, and DPC functionality, but differ in command set, telemetry register mapping, and SVI-specific signaling (e.g., SV_DAT/SV_CLK). Mode selection is static and cannot be changed dynamically during operation.

CHL8103-16CRT Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 40-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Type:: PWM

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Number of Outputs:: 4

Output Phases:: 3

Voltage - Supply (Vcc/Vdd):: 3.3V

Frequency - Switching:: 200kHz ~ 1.2MHz

Duty Cycle (Max):: -

Synchronous Rectifier:: No

Clock Sync:: No

Serial Interfaces:: I2C

Control Features:: Enable, Power Good

Operating Temperature:: 0°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-VQFN-40-903

CHL8103-16CRT FAQ

1.How can I place an order for CHL8103-16CRT through Aetrix?

Please submit a Request for Quotation (RFQ) for CHL8103-16CRT 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 CHL8103-16CRT reliable?

The price and inventory of CHL8103-16CRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CHL8103-16CRT is usually 5 days.

3.What payment methods are accepted for CHL8103-16CRT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CHL8103-16CRT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CHL8103-16CRT?

CHL8103-16CRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CHL8103-16CRT 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 CHL8103-16CRT?

For technical support, including CHL8103-16CRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CHL8103-16CRT requirements.

6.How does Aetrix verify that CHL8103-16CRT is sourced from the original manufacturer or authorized distributors?

All CHL8103-16CRT 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 CHL8103-16CRT meets industry standards.

7.What is the process for return or replacement of CHL8103-16CRT?

All CHL8103-16CRT units undergo pre-shipment inspection (PSI). If there is an issue with CHL8103-16CRT, 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 CHL8103-16CRT part is unused and in its original packaging.

Return procedure for CHL8103-16CRT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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