Renesas HIP6004BCRZ

Overview

HIP6004BCRZ from Intersil is a synchronous-rectified buck PWM controller IC designed to drive two N-channel MOSFETs in high-performance microprocessor power supplies. It delivers precise output voltage regulation (±1% over line/temperature), supports 1.3V–3.5V DAC-programmed outputs in 0.05V/0.1V steps, features a 200kHz free-running oscillator adjustable from 50kHz to >1MHz, and integrates overvoltage/overcurrent protection using upper MOSFET r_DS(ON) sensing - deployed in Pentium Pro, PowerPC, and K6-based DC-DC regulators.

For engineers reviewing the HIP6004BCRZ datasheet, HIP6004BCRZ pinout, HIP6004BCRZ application, or HIP6004BCRZ equivalent, key selection considerations include its voltage-mode control architecture, TTL-compatible 5-bit VID interface, 0%–100% duty cycle capability, integrated PGOOD monitoring with ±10% window, and QFN-20 package thermal performance (θ_JA = 33°C/W).

Technical Context

The HIP6004BCRZ implements voltage-mode PWM control with a 15MHz gain-bandwidth error amplifier and 6V/µs slew rate, enabling fast transient response in microprocessor VRMs. Its oscillator uses an external RT resistor to set switching frequency, with programmability spanning 50kHz–1MHz via pull-down or pull-up configurations.

Overcurrent protection operates by comparing the voltage drop across the upper MOSFET's r_DS(ON) against a reference generated by an internal 200µA current source and external ROCSET resistor - eliminating need for a discrete sense resistor. The PGOOD signal asserts high only when VSEN is within ±10% of DACOUT, with 2% hysteresis to prevent ripple-induced toggling.

Key Specifications

Pinout & Package

The HIP6004BCRZ is housed in a RoHS-compliant 20-lead 5×5 mm QFN package (JEDEC MO-220, pkg drawing L20.5x5) with exposed thermal pad for enhanced heat dissipation (θ_JC = 5°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck controller applications.

Compared with ISL6522CRZ and TPS51116PWR, the HIP6004BCRZ offers broader output voltage range (1.3–3.5V), fully integrated VID DAC, and simpler single-phase implementation - making it optimal for fixed-output, medium-current (≤20A) microprocessor supplies where board space and BOM count are constrained.

Availability

HIP6004BCRZ is available at Aetrix Electronics and suitable for microprocessor core supplies, low-voltage distributed power systems, and high-power 5V-to-3.xV DC-DC regulators requiring stable component supply and long-lifecycle support.

Supply support for HIP6004BCRZ 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

Intersil Corporation, now part of Renesas Electronics, is a semiconductor manufacturer specializing in precision analog, power management, and interface ICs for industrial, computing, and communications markets.

The HIP6004B product line was engineered specifically for single-phase synchronous buck VRMs powering high-performance x86 and RISC microprocessors - emphasizing tight regulation, fast transient response, and integrated protection in compact QFN packaging.

FAQ

What is the recommended input voltage range for HIP6004BCRZ operation?

The HIP6004BCRZ is specified for a +12V ±10% bias supply on the VCC pin, and it supports VIN = +5V or +12V for the main converter input. Absolute maximum VCC is +15V. Operation outside the recommended 10.8V–13.2V VCC range may compromise regulation accuracy or damage the device. Always verify VCC decoupling per datasheet Figure 6 layout guidelines when designing with HIP6004BCRZ.

How does HIP6004BCRZ implement overcurrent protection without a sense resistor?

The HIP6004BCRZ monitors upper MOSFET conduction loss by measuring the voltage drop across its r_DS(ON) using the PHASE and OCSET pins. An internal 200µA current source develops a reference voltage across an external ROCSET resistor; when the MOSFET's V_DS exceeds this reference, the controller initiates hiccup-mode soft-start recovery. This method eliminates the power loss and board area associated with discrete current-sense resistors in HIP6004BCRZ designs.

Can HIP6004BCRZ be used with a 5V input supply instead of 12V?

Yes, the HIP6004BCRZ supports both +5V and +12V input supplies as stated in the datasheet. When using +5V, ensure the VCC pin is still supplied with +12V ±10% - the 5V/12V designation refers to the main converter input (VIN), not the IC bias rail. The gate drivers require sufficient boot voltage; confirm BOOT capacitor sizing and layout per Figure 6 to sustain UGATE drive under 5V VIN conditions in HIP6004BCRZ applications.

What is the function of the '11111' VID code on HIP6004BCRZ?

The '11111' VID code (all five VID pins high) disables the HIP6004BCRZ gate drivers and forces 0V output, activating Power-On Reset functionality. Unlike other VID codes, PGOOD asserts high in this state - a deliberate behavior enabling AND-gating of PGOOD signals in dual-microprocessor systems. This VID combination must be avoided during normal operation, as it halts PWM switching and invalidates regulation in HIP6004BCRZ-based supplies.

Does HIP6004BCRZ support adjustable switching frequency, and how is it configured?

Yes, HIP6004BCRZ features a programmable oscillator with nominal 200kHz free-running frequency. Connect an RT resistor from Pin 20 (RT) to GND to increase frequency (e.g., 100kΩ yields ~150kHz); connect RT from Pin 20 to VCC to decrease frequency (e.g., 100kΩ yields ~120kHz). Frequency range spans 50kHz to >1MHz. The exact relationship is given by Fs ≈ 200kHz + 5×10⁶/RT(kΩ) (RT-to-GND) or Fs ≈ 200kHz − 4×10⁷/RT(kΩ) (RT-to-VCC) in HIP6004BCRZ applications.