EP53A8LQA Datasheet, PDF (1/21 Pages) Altera Corporation – Integrated Inductor

Enpirion^® Power Datasheet
EP53A8LQA/HQA 1A PowerSoC
Voltage Mode Synchronous
PWM Buck with Integrated Inductor
Description
The EP53A8LQA and EP53A8HQA are 1A
PowerSoCs that are AEC-Q100 qualified for
automotive applications. The device integrates
MOSFET switches, control, compensation, and the
Inductor in an advanced 3mm x 3mm QFN Package.
Integrated inductor ensures the complete power
solution is fully characterized with the inductor
carefully matched to the silicon and compensation
network. It enables a tiny solution footprint, low output
ripple, low part-count, and high reliability, while
maintaining high efficiency. The complete solution
can be implemented in as little as 27mm² and operate
from -40°C to 105°C ambient temperature range.
The EP53A8xQA uses a 3-pin VID to easily select the
output voltage setting. Output voltage settings are
available in 2 optimized ranges providing coverage
for typical V_OUT settings.
The VID pins can be changed on the fly for fast
dynamic voltage scaling. EP53A8LQA further has the
option to use an external voltage divider.
Features
• Integrated Inductor Technology
• -40°C to +105°C Ambient Temperature Range
• AEC-Q100 Qualified for Automotive Applications
• 3mm x 3mm x 1.1mm QFN Package
• Total Solution Footprint ~ 27mm²
• Low V_OUT Ripple for IO Compatibility
• High Efficiency, up to 94%
• V_OUT Range 0.6V to V_IN – 0.5V
• 1A Continuous Output Current
• 5 MHz Switching Frequency
• 3-pin VID for Glitch Free Voltage Scaling
• Short Circuit and Over Current Protection
• UVLO and Thermal Protection
• IC Level Reliability in a PowerSoC Solution
Applications
• Automotive Applications AEC-Q100 Requirement
• Portable Wireless and RF applications
• Wireless Broad Band Data Cards
• Solid State Storage Applications
• Noise and Space Sensitive Applications
V_IN
4.7µF
0603
X7R
10366
EP53A8xQA
100Ω
PVIN
VOUT
AVIN
ENABLE
VS0
VS1
VS2
PGND
VSENSE
VFB
AGND
Figure 1. Simplified Applications Circuit
V_OUT
10µF
0805
X7R
Efficiency vs. I_OUT (V_IN = 3.3V)
100
95
90
85
80
75
27mm²
70
65
60
55
50
CONDITIONS
45
V_IN = 3.3V
VOUT = 2.5V
40
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
OUTPUT CURRENT (A)
Figure 2. Highest Efficiency in Smallest Solution Size
July 21, 2015
www.altera.com/enpirion
Rev D