Renesas HIP6006CB

Overview

HIP6006CB 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 1.27V internal reference with ±1% regulation accuracy over line and temperature, supports 50kHz–1MHz programmable switching frequency, and provides 0%–100% duty cycle control for DC-DC conversion in Pentium® and PowerPC™ applications.

For engineers reviewing the HIP6006CB datasheet, HIP6006CB pinout, HIP6006CB application, or HIP6006CB equivalent, key selection considerations include its voltage-mode control architecture, rDS(ON)-based over-current protection, bootstrap gate drive capability, SOIC-14 package compatibility, and thermal performance at 0°C to 70°C ambient.

Technical Context

The HIP6006CB implements voltage-mode PWM control using a 15MHz gain-bandwidth error amplifier and 6V/μs slew rate to enable fast transient response in microprocessor VRMs. Its oscillator generates a 200kHz free-running triangle wave adjustable via external RT resistor, supporting stable constant-frequency operation across wide load and input ranges.

Over-current protection operates without a sense resistor by monitoring voltage drop across the upper MOSFET's rDS(ON) using an internal 200μA current source at OCSET pin and PHASE node feedback. Soft-start is implemented via 10μA current charging an external capacitor on SS pin to 4V, clamping COMP and reference during startup.

Key Specifications

Pinout & Package

HIP6006CB is housed in a 14-lead SOIC package (JEDEC MS-012, package drawing M14.15), thermally rated at θJA = 85°C/W, RoHS-compliant and Pb-free capable.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HIP6006CB, HIP6004CB offers reduced feature set and drive capability for simpler, lower-cost applications, while ISL6522CBZ extends frequency range and gate drive performance for next-generation VRMs-neither is pin-compatible, requiring PCB redesign and loop compensation revalidation.

Availability

HIP6006CB is available at Aetrix Electronics and suitable for microprocessor core supplies, high-power 5V-to-3.xV DC-DC regulators, and low-voltage distributed power systems requiring stable component supply and long-term industrial availability.

Supply support for HIP6006CB 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 semiconductor company specializing in precision analog, power management, and interface ICs for computing, industrial, and communications markets.

The HIP6006CB belongs to Intersil's high-performance DC-DC controller product line, engineered specifically for synchronous buck converters powering advanced microprocessors with stringent voltage accuracy and transient response requirements.

FAQ

What is the primary function of the HIP6006CB in a power supply design?

The HIP6006CB serves as a synchronous-rectified buck PWM controller IC that manages two external N-channel MOSFETs to regulate output voltage in high-performance microprocessor power supplies. It integrates oscillator, error amplifier, gate drivers, soft-start, and rDS(ON)-based over-current protection-enabling complete DC-DC converter control with minimal external components. The HIP6006CB is specifically optimized for applications demanding ±1% output regulation and fast transient response.

Does the HIP6006CB require an external current-sense resistor for over-current protection?

No, the HIP6006CB does not require an external current-sense resistor. It implements over-current protection by monitoring the voltage drop across the upper MOSFET's rDS(ON) using an internal 200μA current source at the OCSET pin and the PHASE node. This method eliminates the power loss and board space associated with a discrete sense resistor while maintaining accurate peak-current detection. The HIP6006CB uses this architecture to trigger hiccup-mode soft-start recovery upon fault detection.

What is the recommended operating voltage range for the VCC pin of the HIP6006CB?

The HIP6006CB is specified to operate with a VCC supply of +12V ±10%, i.e., 10.8V to 13.2V. This bias rail powers internal logic, the oscillator, error amplifier, and gate drivers. The datasheet explicitly states that VCC must be within this range under all operating conditions-including startup and transient load events-to ensure proper functionality of the HIP6006CB. Operation outside this window may cause erratic behavior or failure to initiate soft-start.

Can the HIP6006CB support output voltages below 1.27V?

No, the HIP6006CB cannot regulate output voltages below its internal 1.27V reference voltage. The device uses a trimmed 1.27V bandgap reference as the feedback setpoint, and the FB pin connects to a resistive divider from the output to GND. Since the reference is fixed and not externally adjustable, the lowest achievable regulated output is 1.27V. For lower voltages, a different controller with an adjustable or lower reference-such as the HIP6301-must be selected instead of the HIP6006CB.

What package type and lead count does the HIP6006CB use?

The HIP6006CB uses a 14-lead SOIC (Small Outline Integrated Circuit) package conforming to JEDEC MS-012 outline and Intersil package drawing M14.15. It is a surface-mount, gull-wing leaded package with standard 1.27mm pitch, RoHS-compliant and Pb-free capable. This package is distinct from the TSSOP variant (HIP6006CV), and the HIP6006CB is not interchangeable with it without PCB layout modification due to different footprint and thermal characteristics.