EVALPM6680A STMicroelectronics, EVALPM6680A Datasheet - Page 41
EVALPM6680A
Manufacturer Part Number
EVALPM6680A
Description
EVAL BOARD FOR PM6680A
Manufacturer
STMicroelectronics
Datasheet
1.PM6680ATR.pdf
(48 pages)
Specifications of EVALPM6680A
Mfg Application Notes
PM6680A, AN2565 Appl Note
Main Purpose
DC/DC, Step Down with LDO
Outputs And Type
3, Non-Isolated
Power - Output
10.5W
Voltage - Output
1.8V, 3.3V, 5V
Current - Output
2.5A, 2.5A, 100mA
Voltage - Input
6 ~ 36V
Regulator Topology
Buck
Frequency - Switching
200kHz, 300kHz
Board Type
Fully Populated
Utilized Ic / Part
PM6680A
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-6263
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
PM6680A
Equation 37
We choose standard value L=4.7 µH.
∆I
I
I
2.
3.
4.
Equation 38
Equation 39
Equation 40
LRMS
peak
L(max)
Output capacitor selection
We would like to have an output ripple smaller than 25 mV.
OUT1: POSCAP 4TPE150MI
OUT2: POSCAP 6TPE220M
Power MOSFETs
OUT1:High side: STS5NF60L
Low side: STS7NF60L
OUT2:High side: STS5NF60L
Low side: STS7NF60L
Current limit
OUT1:
(Let's assume the maximum temperature Tmax = 75 °C in R
choose standard value R
OUT2:
= 2.5 A + 0.58 A = 3.83 A
= 2.523 A
= 0.886 A @VIN =24 V.
CSENSE
= 560 Ω.
DSon
calculation). We
A
Design guidelines
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