사양
| 속성 | 가치 |
| Supplier | Renesas Electronics America Inc |
| Package | Tape & Reel (TR) |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| NumberofOutputs | 2 |
| OutputPhases | 2 |
| Voltage-Supply(Vcc/Vdd) | 4.9V ~ 5.5V |
| Frequency-Switching | 150kHz ~ 2MHz |
| DutyCycle(Max) | 66% |
| SynchronousRectifier | Yes |
| ClockSync | No |
| ControlFeatures | Current Limit, Enable, Soft Start, Tracking |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 24-VFQFN Exposed Pad |
개요
Description
ISL8121IRZ-T is a dual-channel, synchronous buck controller for multi‑phase voltage regulator modules (VRMs). It drives external N‑channel MOSFETs (high-side/low-side) to regulate CPU/GPU core voltages, using interleaved phases to handle high current with good transient response. Key features include:
- Programmable output voltage via external feedback network
- Two-phase interleaving with current sharing
- Soft-start and enable/shutdown control
- Clock synchronization for phase timing
- Protections: undervoltage, overvoltage, overcurrent, and thermal/shutdown
- Gate-drive outputs and support circuitry (no MOSFETs included)
Package: IRZ (surface-mount, tape-and-reel). Typical applications are motherboard and server VRMs, where efficient, high-current core power delivery is needed.
- Programmable output voltage via external feedback network
- Two-phase interleaving with current sharing
- Soft-start and enable/shutdown control
- Clock synchronization for phase timing
- Protections: undervoltage, overvoltage, overcurrent, and thermal/shutdown
- Gate-drive outputs and support circuitry (no MOSFETs included)
Package: IRZ (surface-mount, tape-and-reel). Typical applications are motherboard and server VRMs, where efficient, high-current core power delivery is needed.
Equivalent
I can provide cross-references, but I need specs. ISL8121IRZ‑T is a Renesas/Intersil dual‑phase buck controller. To give equivalents, specify target vendors (TI, Analog Devices, Monolithic Power Systems, etc.) and your required input/output voltages, current, and package. I’ll then list concrete cross‑reference parts.
Features
ISL8121IRZ‑T is a high‑performance PWM controller for synchronous buck regulators (multiphase VRMs). Key features include:
- Wide input range and gate‑drive outputs for external MOSFETs
- Current‑mode control with fast transient response
- Programmable output voltage via resistor divider
- Adjustable switching frequency
- Enable with undervoltage lockout; soft‑start and voltage tracking/sequencing
- Overcurrent/short‑circuit protection with hiccup
- Overvoltage and input UV protection
- Thermal shutdown/over‑temperature protection
- Dead‑time control and fault/status reporting pins
- Suitable for multi‑phase configurations
- Package: IRZ; Tape‑and‑Reel (T)
For exact electrical specifications, consult the ISL8121 datasheet.
- Wide input range and gate‑drive outputs for external MOSFETs
- Current‑mode control with fast transient response
- Programmable output voltage via resistor divider
- Adjustable switching frequency
- Enable with undervoltage lockout; soft‑start and voltage tracking/sequencing
- Overcurrent/short‑circuit protection with hiccup
- Overvoltage and input UV protection
- Thermal shutdown/over‑temperature protection
- Dead‑time control and fault/status reporting pins
- Suitable for multi‑phase configurations
- Package: IRZ; Tape‑and‑Reel (T)
For exact electrical specifications, consult the ISL8121 datasheet.
Pinout
- Pin count: 28 pins (28‑lead package, IRZ)
- Function: Multi‑phase buck regulator controller (PWM controller) for DC‑DC VRMs. Provides dual (multi)phase PWM outputs to drive external MOSFETs, with error amplifier, reference, feedback, current sense, enable and protection features.
- Function: Multi‑phase buck regulator controller (PWM controller) for DC‑DC VRMs. Provides dual (multi)phase PWM outputs to drive external MOSFETs, with error amplifier, reference, feedback, current sense, enable and protection features.
Manufacturer
Manufacturer: Renesas Electronics Corporation (Intersil brand).
What kind of company: A Japanese multinational semiconductor company that designs and manufactures analog, mixed-signal, and power-management integrated circuits and other semiconductor solutions.
What kind of company: A Japanese multinational semiconductor company that designs and manufactures analog, mixed-signal, and power-management integrated circuits and other semiconductor solutions.
Application
ISL8121IRZ-T is a DC-DC buck controller used for high-efficiency voltage regulation. Typical applications include:
- Desktop/server VRMs for CPU/GPU core voltages
- Multi‑phase VRMs for FPGAs, ASICs, and high‑end DSPs
- Point‑of‑load regulators in embedded and industrial systems
- Telecom and data‑center power supplies requiring compact, efficient DC‑DC conversion
It supports multiphase control, programmable frequency, and tight regulation for tight voltage rails.
- Desktop/server VRMs for CPU/GPU core voltages
- Multi‑phase VRMs for FPGAs, ASICs, and high‑end DSPs
- Point‑of‑load regulators in embedded and industrial systems
- Telecom and data‑center power supplies requiring compact, efficient DC‑DC conversion
It supports multiphase control, programmable frequency, and tight regulation for tight voltage rails.
Package
The ISL8121IRZ-T comes in an 8‑pin IRZ package (Intersil’s IRZ leadframe package) with Tape‑and‑Reel (-T) shipping.
