EP5352QI Datasheet, PDF (12/18 Pages) Altera Corporation – 500/600/800mA PowerSoC Synchronous Buck Regulators With Integrated Inductor

EP5382QI/EP5362QI/EP5352Q I
VS2 ¹⁷
VS1 ¹⁸
VS0
19
ENABLE ²⁰
10 NC
9 NC
8 NC
7 _VOUT
Rb=60K
Ra=200K
V_IN
4.7uF
(see layout recommendation 3)
10µF
V_OUT
Figure 7. Schematic showing the use of external divider option, Vout = 2.6V.
Figure 8 shows two example board layouts. Note the placement of the input and output capacitors.
They are placed close to the device to minimize the physical area of the AC current loops. Note the
placement of the vias per recommendation 3.
Figure 8. Example layout showing PCB top layer, as well as demonstrating use of vias from input, output filter
capacitor local grounds, and thermal pad, to PCB system ground.
03132
12
October 11, 2013
www.altera.com/enpirion
Rev H