Renesas R2J20658BNP#G0

Overview

R2J20658BNP from Renesas Electronics is an integrated DrMOS power stage combining high-side and low-side MOSFETs with a matched gate driver in a single QFN40 package. It delivers up to 40 A average output current, supports >1 MHz switching, operates with VIN up to 20 V, and integrates thermal warning (115°C) and shutdown (150°C) for desktop/server VRMs.

For engineers reviewing the R2J20658BNP datasheet, R2J20658BNP pinout, R2J20658BNP application, or R2J20658BNP equivalent, this device serves as a high-efficiency, Intel 6×6-compliant synchronous buck power stage with tri-state PWM input, built-in 5 V regulator, zero-current detection, and bootstrapped high-side drive-critical for CPU/GPU core voltage regulation.

Technical Context

The R2J20658BNP implements a tightly coupled multi-chip module architecture where driver timing, MOSFET on-resistance, and parasitic inductance are co-optimized for high-frequency (>1 MHz), low-voltage (e.g., 1.3 V) synchronous buck operation. Its UVLO (7.4 V turn-on / 7.0 V turn-off) and supervisor circuit (4.3 V active / 3.8 V shutdown) govern internal 5 V regulation and driver activation independently of DISBL# control.

It features dual thermal protection: open-drain THWN asserts at 115°C (±15°C hysteresis) for system-level warning without disabling operation, while THDN triggers latch-off shutdown above 150°C and forces DISBL# low. The LSDBL# pin enables discontinuous conduction mode by disabling the low-side gate, and the PWM input supports tri-state detection for zero-current detection during mid-voltage or high-impedance states.

Key Specifications

Pinout & Package

Package: QFN40 (6 mm × 6 mm × 0.95 mm), thermally optimized with exposed die pads for high-power dissipation. Three large thermal pads (VSWH, VIN, PGND) must be soldered to PCB copper for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar DrMOS power stage applications.

Compared with IR35201MTRPBF and MP86957GQZ, the R2J20658BNP uniquely combines Intel 6×6 compliance, integrated boot switch, tri-state ZCD, and dual thermal signaling (THWN + THDN) - making it optimal for high-reliability desktop/server VRMs requiring both efficiency and thermal intelligence.

Availability

R2J20658BNP is available at Aetrix Electronics and suitable for desktop CPU VRMs, server GPU power stages, enterprise SSD controller supplies, and AI accelerator core rails requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for R2J20658BNP 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

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and computing markets.

The R2J20658BNP belongs to Renesas' DrMOS product line, engineered specifically for high-efficiency, high-density voltage regulation modules in Intel- and AMD-compliant desktop and server platforms.

FAQ

What is the maximum safe operating frequency for the R2J20658BNP?

The R2J20658BNP supports high-frequency operation above 1 MHz, as confirmed in its datasheet features and typical application circuits. At 1 MHz with VIN = 12 V, VOUT = 1.3 V, and IOUT = 25 A, power loss remains within thermal limits. Operation beyond 1.2 MHz is feasible but requires careful attention to gate drive strength, PCB layout parasitics, and thermal management to maintain efficiency and reliability of the R2J20658BNP.

Does the R2J20658BNP require an external bootstrap diode?

No, the R2J20658BNP does not require an external bootstrap diode. Its BOOT pin is internally connected to the Reg5V output through a built-in switch, eliminating the need for an external Schottky diode. This integration reduces component count, PCB area, and reverse recovery losses - a key advantage explicitly stated in the device description and pin function table of the R2J20658BNP datasheet.

How does the THWN pin function in the R2J20658BNP?

The THWN pin on the R2J20658BNP is an open-drain thermal warning output that pulls low when the internal driver IC junction temperature exceeds 115°C (typ.). It does not disable operation but signals impending thermal stress to the system controller. An external pull-up resistor (e.g., 51 kΩ) is required. This feature enables proactive thermal management before reaching the 150°C shutdown threshold - a distinct capability of the R2J20658BNP.

Can the R2J20658BNP operate with a 5 V VCIN supply?

Yes, the R2J20658BNP supports VCIN = 4.5–5.5 V, provided VCIN is connected to the Reg5V pin as specified in the "Pin Connection" section. In this configuration, the internal 5 V regulator is bypassed, and the device relies on the external 5 V supply for driver bias. This mode avoids UVLO activation and simplifies power sequencing - a validated operating condition documented for the R2J20658BNP.

What is the purpose of the LSDBL# pin on the R2J20658BNP?

The LSDBL# pin on the R2J20658BNP disables the low-side MOSFET gate driver when asserted low, forcing discontinuous conduction mode (DCM). This reduces light-load power loss and improves efficiency during idle or low-utilization states. The pin is internally pulled up to Reg5V (160 kΩ), so leaving it open enables normal continuous conduction - a behavior explicitly defined in the truth table and functional description of the R2J20658BNP.