Renesas HIP6004BCBZA

Overview

HIP6004BCBZA 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-programmable output via five VID pins, features a 200kHz free-running oscillator adjustable from 50kHz to >1MHz, and integrates overvoltage/overcurrent protection using MOSFET r_DS(ON) sensing - deployed in Pentium Pro, PowerPC, and K6-based systems.

For engineers reviewing the HIP6004BCBZA datasheet, HIP6004BCBZA pinout, HIP6004BCBZA application, or HIP6004BCBZA equivalent, key selection considerations include its voltage-mode control architecture, TTL-compatible 5-bit DAC interface, 0%–100% duty cycle capability, integrated PGOOD monitoring with ±10% window, and SOIC-20 package compatibility for legacy microprocessor VRM designs.

Technical Context

The HIP6004BCBZA implements voltage-mode PWM control with a 15MHz gain-bandwidth error amplifier and 6V/µs slew rate, enabling fast transient response in high-current CPU core supplies. Its oscillator uses an external RT resistor to set switching frequency, with programmability spanning 50kHz–1MHz and internal ramp amplitude of 1.9V_P-P.

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

Key Specifications

Pinout & Package

HIP6004BCBZA is housed in a 20-lead SOIC package (JEDEC MS-013, pkg drawing M20.3), with exposed pad not present. Pin functions are validated per Intersil FN4567 Rev 3.00 datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HIP6004BCBZA, HIP6006CBZA adds adaptive voltage positioning for dynamic load-line control but requires VID remapping, while ISL6522CBZ offers extended frequency range and lower R_DS(ON) gate drive for improved efficiency - both require validation in existing layouts despite shared SOIC-20 footprint.

Availability

HIP6004BCBZA is available at Aetrix Electronics and suitable for legacy microprocessor power supplies, industrial embedded VRMs, and low-voltage distributed DC-DC systems requiring stable component supply and long-term obsolescence support.

Supply support for HIP6004BCBZA 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 U.S.-based analog and power management IC designer known for high-performance voltage regulators and controllers targeting computing and industrial markets.

The HIP6004B product line was developed specifically for synchronous buck regulation in high-current microprocessor core supplies, emphasizing precision DAC-programmable output, integrated protection, and simplified voltage-mode loop design.

FAQ

What is the operating temperature range for HIP6004BCBZA?

HIP6004BCBZA is specified for an ambient temperature range of 0°C to +70°C, as confirmed in the Intersil FN4567 Rev 3.00 datasheet Absolute Maximum Ratings table. This commercial-grade rating aligns with its target use in desktop and embedded microprocessor power supplies where airflow and thermal management are controlled. The device's maximum junction temperature is 150°C, and thermal resistance θ_JA is 65°C/W for the SOIC package.

Does HIP6004BCBZA support both +5V and +12V VCC supplies?

HIP6004BCBZA supports a +12V ±10% VCC supply as the primary bias source, per the Recommended Operating Conditions table. While the datasheet states "Operates from +5V or +12V Input" in the Features section, the Electrical Specifications explicitly list VCC = +12V ±10% as the nominal supply condition, and the Power-On Reset thresholds are defined for VCC ≥ 8.2V (falling) and ≤ 10.4V (rising). A +5V-only VCC configuration is not supported in practice.

How does HIP6004BCBZA implement overcurrent protection without a sense resistor?

HIP6004BCBZA implements overcurrent protection by monitoring the voltage drop across the upper MOSFET's r_DS(ON) using the PHASE and OCSET pins. An internal 200µA current source flows through an external ROCSET resistor to generate a reference voltage; when the r_DS(ON) × I_PEAK voltage exceeds this reference, the controller initiates hiccup-mode soft-start cycling. This eliminates the need for a discrete current-sense resistor, reducing cost and power loss.

What is the function of the '11111' VID code on HIP6004BCBZA?

The '11111' VID code (all five VID pins high) on HIP6004BCBZA disables the gate drivers and forces 0V output, activating the Power-On Reset (POR) function. Unlike other VID codes, it causes PGOOD to assert high instead of low - a deliberate behavior to support dual-microprocessor systems where AND-ing of two PGOOD signals is used for system-level power good indication.

Can HIP6004BCBZA be used in new designs today?

No - the HIP6004BCBZA is marked "NOT RECOMMENDED FOR NEW DESIGNS" in the official Intersil datasheet (FN4567 Rev 3.00, Page 1), with no recommended replacement listed. It remains viable for repair, maintenance, or legacy production of systems originally designed for Pentium Pro, K6, or PowerPC 604 platforms, but lacks modern features like adaptive voltage positioning, higher frequency capability, or RoHS-optimized process nodes found in successors such as ISL6522CBZ.