Datasheet

NXP Semiconductors
UM11193
KITFS85AEEVM evaluation board
UM11193 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User manual Rev. 2.1 — 30 January 2019
5 / 52
a
a
a
-
0
3
3
1
47
VPRE_MON1
VPRE
VMON_08V
J21
1
2
3
HDR 1X3
R65
22.1 kΩ
R217
0 Ω
DNP
R64
68.1 kΩ
J22
1
2
3
HDR 1X3
R88
22.1 kΩ
R62
27.4 kΩ
J23
1
2
3
HDR 1X3
R61
22.1 kΩ
R60
68.1 kΩ
J20
1
2
3
HDR 1X3
R67
22.1 kΩ
R78
22.1 kΩ
R66
68.1 kΩ
R79
115.0 kΩ
BUCK2_MON2
BUCK2
VMON_08V
BUCK3_MON3
BUCK3
VMON_08V
LDO_MON4
LDO1
VMON_08V
LDO2
GND
GND
GND
GND
GND
Figure 2. VMONx configuration
4.1.3 VPRE compensation network
This board is delivered with a VPRE compensation network defined for VPRE 4.1 V at
450 kHz. All other VPRE configurations require a new calculation for these components.
a
a
a
-
0
3
3
1
4
8
GND
450 KHz
PRE_COMP
C18
6800 pF
C59
150 pF
R32
3.57 kΩ
R34
0 Ω
R4
0 Ω
GND
2.25 MHz
C9
1500 pF
C8
22 pF
R3
16.9 kΩ
Figure 3. VPRE compensation network