概要

説明

The ZL8801 is a dual phase digital DC/DC controller. Up to four ZL8801s (8 phases) can be operated in parallel to provide additional output current. The ZL8801 supports a wide range of output voltages (0. 54V to 5. 5V) operating from input voltages as low as 4. 5V up to 14V. With its fully digital ChargeMode™ Control loop the ZL8801 can respond to a transient load step within a single switching cycle. This unique compensation-free modulation technique allows designs to meet transient specifications with minimum output capacitance, thus saving cost and board space. Intersil’s proprietary single wire DDC (Digital-DC™) serial bus enables the ZL8801 to communicate between other Intersil digital power ICs. By using the DDC, the ZL8801 achieves complex functions such as inter-IC phase current balancing, sequencing and fault spreading, eliminating complicated power supply managers with numerous external discrete components. The ZL8801 features cycle-by-cycle overcurrent protection and protection for overvoltage, undervoltage, over-temperature and MOSFET driver under and overvoltage protection. A snapshot parametric capture feature allows users to take a snapshot of operating and fault data during normal or fault conditions. Integrated Low Drop-Out (LDO) regulators allow the ZL8801 to be operated from a single input supply eliminating the need for additional linear regulators. A dedicated 5V VDRV LDO output can be used to power external drivers or DrMOS devices. With full PMBus™ compliance, the ZL8801 is capable of measuring and reporting input voltage, input current, output voltage, output current as well as the device's internal temperature, an external temperature and an auxiliary voltage input.

特長

  • Unique compensation-free design – always stable
  • Output voltage range: 0.54V to 5.5V
  • Input voltage range: 4.5V to 14V
  • 1% output voltage accuracy over line, load and temperature
  • Charge mode control achieves fast transient response, reduced output capacitance and provides output stability without compensation
  • Single 2-phase output, up to 8 phases with multiple devices
  • Switching frequency range 200kHz to 1.33MHz
  • Proprietary single wire DDC (Digital-DC) serial bus enables voltage sequencing and fault spreading with all other Intersil digital power ICs
  • Tracking of an external power supply in the single 2-phase configuration
  • Cycle-by-cycle inductor peak current protection
  • Digital fault protection for output voltage UV/OV, input voltage UV/OV, temperature and MOSFET driver voltage
  • 10-bit cycle-by-cycle average output current measurement with adjustable gain settings for sensing with high current, low DCR inductors
  • 10-bit monitor ADC measures input voltage, input current, output voltage, internal, external temperature, driver voltage
  • Configurable to use standalone MOSFET drivers or integrated driver-MOSFET (DrMOS) devices
  • Nonvolatile memory (NVRAM) for storing operating parameters and fault events.
  • PMBus™ compliant

製品比較

アプリケーション

ドキュメント

分類 タイトル 日付
データシート PDF 3.50 MB
マニュアル-開発ツール PDF 257 KB
ガイド PDF 4.68 MB
製品変更通知 PDF 124 KB
ガイド PDF 714 KB
その他資料 PDF 194 KB
マニュアル-ハードウェア PDF 693 KB
アプリケーションノート PDF 509 KB
アプリケーションノート PDF 397 KB
9 items

設計・開発

ソフトウェア/ツール

ソフトウェア/ツール

Software title
Software type
会社名
PowerNavigator Software
Renesas' PowerNavigator™ software allows simple configuration and monitoring of multiple Digital-DC devices using a PC with a USB interface.
Monitor Debugger/RAM Monitor ルネサス
1 item

ソフトウェアダウンロード

分類 タイトル 日付
ソフトウェア/ツール-その他 ログインしてダウンロード ZIP 120.25 MB
ソフトウェア/ツール-ソフトウェア ログインしてダウンロード ZIP 96.49 MB
ライブラリ ZIP 54.93 MB
ライブラリ ZIP 119.19 MB
ライブラリ ZIP 59.25 MB
ライブラリ ZIP 435 KB
ライブラリ ZIP 1.75 MB
ライブラリ ZIP 166 KB
8 items

ボード&キット

ボード&キット

モデル

Selecting between the ZL8800 and ZL8801

Identifying the differences between the ZL8800 and ZL8801 dual phase PMBus™ ChargeMode™ control dc/dc digital controllers.

Transcript

The ZL8801 is part of our fourth generation family of digital power controllers. Also in that family is the ZL8800. Selecting between the two is relatively simple, as the chart shows.

The ZL8800 and ZL8801 both offer ChargeMode control. The ZL8800, however, offers dual output or dual phase operation. The ZL8801 offers only dual phase, but it adds DDC current share. With DDC current share, you can share multiple ZL8801 controllers, for up to an eight-phase design.

The recommended current range for the ZL8800 is between 5A and 60A. The ZL8801 has a recommended current range of 40A all the way up to 300A plus. The actual current is dependent on the power stage you use, however, these are just recommendations.

Both parts are offered in a 7mm x 7mm QFN package. Both the ZL8800 and ZL8801 are compensation free, based on our ChargeMode control architecture.

Unlike an analog control loop, a fully digital control loop digitizes the feedback voltage and handles all control and compensation in a digital delay.