SI3210DCQ1-EVB Silicon Laboratories Inc, SI3210DCQ1-EVB Datasheet - Page 23

• Manufacturer Part Number: SI3210DCQ1-EVB
• Description: DAUGHTERCARD W/SI3201 INTERFACE
• Manufacturer: Silicon Laboratories Inc
• Series: ProSLIC®r
• Type: SLIC/CODECr

Specifications of SI3210DCQ1-EVB

• Contents: Evaluation Board and CD-ROM
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Si3210
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

The subcircuit above can be substituted into any of the ProSLIC solutions as an optional bias circuit for Q5, Q6. For
this optional subcircuit, C7 and C8 are different in voltage and capacitance to the standard circuit. R23 and R24 are
additional components.
Table 20. Component Value Selection Examples for Si3210M MOSFET/Transformer DC-DC Converter
Component
Component
R23,R24
Table 21.
C7,C8
Note:
R28
R29
3.3 V
5.0 V
VDC
12 V
24 V
Note:
VDC
12 V
24 V
5 V
There are other system and software conditions that influence component value selection, so please refer to
AN45 “Design Guide for the Si3210 DC-DC Converter for detailed guidance.
There are other system and software conditions that influence component value selection, so please refer
to AN45 “Design Guide for the Si3210 DC-DC Converter for detailed guidance.
Maximum Ringing Load/Loop Resistance
Component Value Selection Examples for Si3210 BJT/Inductor DC-DC Converter
Maximum Ringing Load/Loop Resistance
Table 19. Component Value Selection for Si3210/Si3210M
Figure 15. Si321x Optional Equivalent Q5, Q6 Bias Circuit
Table 18. Si321x Optional Bias Component Values
For V
For V
For V
100 nF, 100 V, X7R, ±20%
For V
For V
3 REN/117 Ω
5 REN/117 Ω
5 REN/117 Ω
5 REN/117 Ω
3.0 kΩ, 1/10 W, ±5%
1/10 W, 1% resistor
1/10 W, 1% resistor
3 REN/117 Ω
5 REN/117 Ω
5 REN/117 Ω
RRE
CLAMP
80.6
CLAMP
CLAMP
R7
DD
DD
Q5
= 3.3 V: 26.1 kΩ
= 5.0 V: 37.4 kΩ
QRP
5551
Value
Value
R12
RRBN
5.1k
= 100 V: 676 kΩ
= 80 V: 541 kΩ
= 85 V: 574 kΩ
Q3
QRDN
5401
R23
RRBN0
3.0k
100 nF
CRBN
C7
Rev. 1.42
RTE
80.6
R6
Q6
QTN
5551
Transformer Ratio
150 µH
220 µH
R13
RTBN
5.1k
67 µH
L1
Q4
where V
QTDN
5401
R24
RTBN0
3.0k
1 - 2
1 - 2
1 - 3
1 - 4
where V
150 Ω
162 Ω
175 Ω
R17
CLAMP
C8
CTBN
100 nF
R28 = (V
Murata, Johanson, Venkel
Supplier/Part Number
R29 = V
BE
is the clamping voltage for V
is the nominal VBE for Q9
Si3210/Si3211
Comments
0.15 Ω
0.56 Ω
DD
0.06 Ω
0.10 Ω
2.0 Ω
R18
0.6 Ω
2.1 Ω
CLAMP
R18
+ V
BE
/148 µA
)/148 µA
R19, R20
16.5 kΩ
56.2kΩ
121 kΩ
R19, R20
7.15 kΩ
16.5 kΩ
56.2 kΩ
121 kΩ
BAT
23