ZL8800 Series Digital Controller

Intersil's dual-channel/dual-phase PMBus™ ChargeMode™ control DC/DC digital controller

Image of Intersil's ZL8800 Series Digital ControllerIntersil's ZL8800 is a dual-output or dual-phase digital DC/DC controller. Each output can operate independently, or can be used together in a dual-phase configuration for high-current applications. The ZL8800 supports a wide range of output voltages (0.54 V to 5.5 V) operating from input voltages as low as 4.5 V up to 14 V. With the fully-digital ChargeMode control, the ZL8800 will 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, saving cost and board space. Intersil's proprietary single-wire digital-DC (DDC) serial-bus enables the ZL8800 to communicate between other Zilker ICs. By using the DDC, the ZL8800 achieves complex functions such as inter-IC phase current balancing, sequencing, and fault spreading, eliminating complicated power-supply managers with numerous external discrete components.

Features
  • Unique compensation-free design; always stable
  • Output voltage range: 0.54 V to 5.5 V
  • Input voltage range: 4.5 V to 14 V
  • 1% output voltage accuracy over line, load, and temperature
  • ChargeMode control achieves fast transient response, reduced output capacitance, and provides output stability without compensation
  • Switching frequency range 200 kHz to 1.33 MHz
  • Proprietary single-wire DDC serial bus enables voltage sequencing and fault spreading with other Zilker ICs
  • Tracking of an external power supply
  • 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 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 stand-alone MOSFET drivers or integrated driver-MOSFET (DrMOS) devices
  • Non-volatile memory for storing operating parameters and fault events
  • PMBus compliant
Applications
  • Servers/storage equipment
  • Telecom/datacom equipment
  • Power supplies (memory, DSP, ASIC, FPGA)

ZL8800 Series

ImagenNúmero de pieza del fabricanteDescripciónEstado de la piezaTipo de salidaCantidad disponible
ZL8800ALBFT7A datasheet linkIC REG CTRLR BUCK PMBUS 44QFNZL8800ALBFT7AIC REG CTRLR BUCK PMBUS 44QFNActivoSeñal PWM175 - Inmediata
Enlace de la página del producto ZL8800ALBFT7A
Publicado: 2013-11-27