APS8801
6-channel DC/DC
True Digital Power IC with Integrated FETs
Description
Adaptive Digital Power has developed a 6-channel DC/DC digital switching regulator. Offering 4 BUCK
regulators each capable of sourcing 3A of current and 2 LDO’s each capable of sourcing 0.5A of current. The
I2C digitally controlled regulators deliver unprecedented performance, enabling higher efficiency, better
transient response and ease of use across a broad range of voltage regulator designs.
The APS8801 includes a proprietary Digital Signal Processor and mixed-mode analog design. The adaptive
digital architecture enables four independent DC/DC switching regulators in a compact 64-pin QFN package
and is also capable of acting as a digital controller. As a digital controller it is capable of regulating external
Power FETs thereby extending its voltage regulation range beyond 5V and current up to 30A. OTP memory
allows flexibility in configuring the chip in the absence of the I2C control.
Key Parameters
Minimum
Maximum
Input
4.5 V
5.5 V
Vout
0.6 V
3.5 V
Iout (each BUCK)
3A
Iout (each LDO)
500ma
Switching frequency
250 kHz
1 MHz
Applications
Systems requiring multiple supply rails, sequencing, margining, dynamic voltage scaling, digital control.
System Benefits
Development
• Real-time automatic adjustment of controller compensation, sequencing, output voltage, current limits
• Simple development GUI; ADP_TOOL
• Best possible voltage control performance
Buck / Boost Engine
Efficiency
Adaptive Digital Compensation & Control
– 95% efficiency at light load
Reliability
SW1
FET
SW2
FET SW3
Vin
– Guaranteed controller stability
Power System
Control & Management
– Robust NVM technology
– Adjustment for component variation and aging
FET
SW4
I2C Interface
Cost
Control Regs
– Reduction in component count
Vsense
ADC
Interrupt / Status
– Reduction in system level costs
– Reduction in board area
FET
XTAL
Temp Sense
Vref
LDO1
VFB
POK
LDO2
XTAL
OSC
Sequencer
&
Control Logic
Adaptive Digital Power Advantages
A digital control algorithm provides a true adaptive adjustment of the digital
control loop to take into account all system variations, while guaranteeing
stability of the converter. It can maintain the original performance when
changes in the power train (phase dropping, component variation) would
otherwise lead to sub-optimal stability criteria with a fixed analog controller.
APS8801 Efficiency
Digital-control Technology
• Real-time adjustment of the
compensation, output voltages,
current limits, faults, sequencing
• Guaranteed stability
• Improved transient response
• Improved efficiency
100
95
90
Efficiency (%)
Features
85
80
75
Monitoring
70
• Current monitoring
• Internal temperature sensing
• Faults
65
60
0.33
0.50
0.60
0.70
1.03
1.68
Output Current (A)
3.35
Power Management
• I2C interface communication
• Fault detection (OC, OVP, UVLO, SCP)
• High reliability non-volatile memory
(OTP)
ADP TOOL GUI
Via a unique algorithms which make the power converter truly self-contain.
Using the ADP TOOL GUI, changes to configuration are simple.
RoHS compliant 64-lead plastic
9mm x 9mm QFN package
Contact
Adaptive Digital Power
1879 Lundy Avenue, # 226
San Jose, CA 95131
United States
Tel: +1 408-232-1640
www.adp-ic.com
Ordering Information
Part Number
Description
Quantity
APS8801-A2-Q-1
Reel, 9x9 QFN
5000
APS8801-EVAL
Customer Evaluation Kit
1