DATASHEET
ZL8800 FN7558
Rev.6.00
Nov 8, 2017 Dual Channel/Dual Phase PMBus ChargeMode Control DC/DC Digital Controller
The ZL8800 is a dual output or dual phase digital DC/DC
controller. Each output can operate independently or be used
together in a dual phase configuration for high current
applications. Features The ZL8800 supports a wide range of output voltages
(0.54V to 5.5V) operating from input voltages as low as 4.5V
up to 14V. Input voltage range: 4.5V to 5.5V or 6.5V to 14V Unique compensation-free design, which is always stable Output voltage range: 0.54V to 5.5V 1% output voltage accuracy over line, load, and temperature ChargeMode control achieves fast transient response and
reduced output capacitance and provides output stability
without compensation With the fully digital ChargeModeв„ў 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, thus saving cost and board space. Switching frequency range: 200kHz to 1.33MHz Proprietary single wire DDC serial bus enables voltage
sequencing and fault spreading with other Intersil ICs The proprietary single wire Digital-DCв„ў (DDC) serial bus
enables the ZL8800 to communicate between other Intersil
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. External power supply tracking 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 …