ZL2008

Digital DC-DC Controller with Drivers and Pin-Strap Current Sharing

OVERVIEW

The ZL2008 is a digital DC/DC controller with integrated MOSFET drivers. Current sharing allows multiple devices to be connected in parallel to source loads with very high current demands. Adaptive performance optimization algorithms improve power conversion efficiency. Zilker Labs Digital-DC™ technology enables a blend of power conversion performance and power management features.

The ZL2008 is designed to be a flexible building block for DC power and can be easily adapted to designs ranging from a single-phase power supply operating from a 3.3V input to a multi-phase supply operating from a 12V input. The ZL2008 eliminates the need for complicated power supply managers as well as numerous external discrete components.

Key operating features can be configured by pin-straps, including compensation, current sharing and output voltage. The ZL2008 uses the I2 C/SMBus™ with PMBus™ protocol for communication with a host controller and the Digital-DC bus for communication between Zilker Labs devices.

KEY FEATURES

    Power Conversion
  • Efficient synchronous buck controller
  • Adaptive light load efficiency optimization
  • 3V to 14V input range
  • 0.54V to 5.5V output range (with margin)
  • POLA and DOSA voltage trim modes
  • ±1% output voltage accuracy
  • Internal 3A MOSFET drivers
  • Fast load transient response
  • Current sharing and phase interleaving
  • Snapshot™ parameter capture
  • RoHS compliant (6mmx6mm) QFN package
    Power Management
  • Digital soft-start/stop
  • Precision delay and ramp-up
  • Power good/enable
  • Voltage tracking, sequencing and margining
  • Voltage, current and temperature monitoring
  • I2C/SMBus interface, PMBus compatible
  • Output voltage and current protection
  • Internal non-volatile memory (NVM)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ZL2008
Basic Information
Production Status
Mass Production
Input Voltage Min (V)
3
Input Voltage Max (V)
14
Output Voltage Min (V)
0.54
Output Voltage Max (V)
5.5
Output Current Max (A)
40
IQ
16 mA
Switching Freq. (min) (MHz)
0.2
Switching Freq. (max) (MHz)
1.4
Peak Efficiency (%)
94
Integrated MOSFET Driver(s)
Yes
Integrated Power Mgmt
Yes
Qualification Level
Standard
Switching Frequency Range (MHz)
0.2 to 1.4
Temperature Range
-40 to +85

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