-± 1 % output voltage accuracy at -40 °C to +125 °C
• Highly efficient
-98 % peak efficiency
-4 μA supply current at shutdown
-235 μA operating current, not switching
• Highly configurable
-Adjustable switching frequency from 100 kHz to 2 MHz
-Adjustable soft start and adjustable current limit
-3 modes of operation, forced continuous conduction,
power save or ultrasonic
• Robust and reliable
-Output over voltage protection
-Output under voltage / short circuit protection with auto
retry
-Power good flag and over temperature protection
- Supported by Vishay PowerCAD online design simulation
• Material categorization: for definitions of compliance
please see
www.vishay.com/doc?99912
LINKS TO ADDITIONAL RESOURCES
Simulation
Tool
Evaluation
Boards
Design Tools
DESCRIPTION
The SiC46x is a family of wide input voltage, high efficiency
synchronous buck regulators with integrated high side and
low side power MOSFETs. Its power stage is capable of
supplying high continuous current at up to 2 MHz switching
frequency. This regulator produces an adjustable output
voltage down to 0.8 V from 4.5 V to 60 V input rail to
accommodate a variety of applications, including
computing, consumer electronics, telecom, and industrial.
SiC46x’s architecture allows for ultrafast transient response
with minimum output capacitance and tight ripple regulation
at very light load. The device enables loop stability
regardless of the type of output capacitor used, including
low ESR ceramic capacitors. The device also incorporates a
power saving scheme that significantly increases light load
efficiency. The regulator integrates a full protection feature
set, including over current protection (OCP), output
overvoltage protection (OVP), short circuit protection (SCP),
output undervoltage protection (UVP) and over temperature
protection (OTP). It also has UVLO for input rail and a user
programmable soft start.
The SiC46x family is available in 2 A, 4 A, 6 A, 10 A pin
compatible 5 mm by 5 mm lead (Pb)-free power enhanced
MLP55-27L package.
APPLICATIONS
Industrial and automation
Home automation
Industrial and server computing
Networking, telecom, and base station power supplies
Unregulated wall transformer
Robotics
High end hobby electronics: remote control cars, planes,
and drones
• Battery management systems
• Power tools
• Vending, ATM, and slot machines
100
98
96
2nd line
eff - Efficiency (%)
V
IN
= 48 V, V
OUT
= 12 V
V
IN
= 24 V, V
OUT
= 12 V
•
•
•
•
•
•
•
TYPICAL APPLICATION CIRCUIT
10000
INPUT
4.5 V
DC
to 60 V
DC
C
BOOT
PHASE
SW
P
GOOD
BOOT
EN
V
CIN
V
IN
V
DD
94
92
90
88
86
84
V
IN
= 48 V, V
OUT
= 5 V
V
IN
= 24 V, V
OUT
= 5 V
V
OUT
Rx
Cy
1000
1st line
2nd line
C
IN
V
DRV
MODE
SS
C
ss
R
limit
R
fsw
I
LIMIT
SiC46x
V
SNS
Cx
R
up
C
OUT
ULTRASONIC
V
FB
COMP
100
R
comp
C
comp
R
down
P
GND
A
GND
Fig. 1 - Typical Application Circuit for SiC46x
S20-0679-Rev. N, 27-Aug-2020
Document Number: 65124
1
For technical questions, contact:
powerictechsupport@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
f
SW
82
80
0
1
2
3
4
5
6
I
OUT
- Output Current (A)
10
Fig. 2 - SiC462 Efficiency vs. Output Current
SiC461, SiC462, SiC463, SiC464
www.vishay.com
PIN CONFIGURATION
27 MODE
21 COMP
23
A
GND
21 COMP
27 MODE
Vishay Siliconix
20
V
SNS
26
V
DD
25
I
LIM
24
f
SW
23
A
GND
20
V
SNS
22
V
FB
22
V
FB
V
CIN
1
P
GOOD
2
EN 3
BOOT 4
30
VIN
28 AGND
1
24
f
SW
26
V
DD
25
I
LIM
19
SS
18 ULTRASONIC
17
P
GND
16
V
DRV
15
GL
14
SW
SS
19
ULTRASONIC 1 8
P
GND
1 7
V
DRV
1 6
GL
1 5
SW
1 4
SW
1 3
SW
1 2
P
GND
11
P
GND
10
P
GND
9
V
IN
8
V
IN
7
30
P
GND
6
29
V
IN
28
A
GND
1
V
CIN
2
P
GOOD
3 EN
4 BOOT
PHASE 5
PHASE 6
29 PGND
6
13
SW
12
SW
5 PHASE
6 PHASE
P
GND
10
P
GND
11
V
IN
7
V
IN
8
P
GND
9
Fig. 3 - SiC46x Pin Configuration
PIN DESCRIPTION
PIN NUMBER
1
2
3
4
5, 6
7, 8, 29
9, 10, 11, 17, 30
12, 13, 14
15
16
18
19
20
21
22
23, 28
24
25
26
27
SYMBOL
V
CIN
P
GOOD
EN
BOOT
PHASE
V
IN
P
GND
SW
GL
V
DRV
ULTRASONIC
SS
V
SNS
COMP
V
FB
A
GND
f
SW
I
LIMIT
V
DD
MODE
DESCRIPTION
Supply voltage for internal regulators V
DD
and V
DRV
. This pin should be tied to V
IN
, but can also be
connected to a lower supply voltage (> 5 V) to reduce losses in the internal linear regulators
Open-drain power good indicator - high impedance indicates power is good. An external pull-up
resistor is required
Enable pin. Tie high/low to enable/disable the IC accordingly. This is a high voltage compatible pin,
can be tied to 60 V
High side driver bootstrap voltage
Return path of high side gate driver
Power stage input voltage. Drain of high side MOSFET
Power ground
Power stage switch node
Low side MOSFET gate signal
Supply voltage for internal gate driver. When using the internal LDO as a bias power supply, V
DRV
is
the LDO output. Connect a 4.7 μF decoupling capacitor to P
GND
Float to disable ultrasonic mode, connect to V
DD
to enable. Depending on the operation mode set by
the mode pin, power save mode or forced continuous mode will be enabled when the ultrasonic
mode is disabled
Set the soft start ramp by connecting a capacitor to A
GND
. An internal current source will charge the
capacitor
Power inductor signal feedback pin for system stability compensation
Output of the internal error amplifier. The feedback loop compensation network is connected from
this pin to the A
GND
pin
Feedback input for switching regulator used to program the output voltage - connect to an external
resistor divider from V
OUT
to A
GND
Analog ground
Set the on-time by connecting a resistor to A
GND
Set the current limit by connecting a resistor to A
GND
Bias supply for the IC. V
DD
is an LDO output, connect a 1 μF decoupling capacitor to A
GND
Set various operation modes by connecting a resistor to A
GND
. See specification table for details
S20-0679-Rev. N, 27-Aug-2020
Document Number: 65124
2
For technical questions, contact:
powerictechsupport@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
SiC461, SiC462, SiC463, SiC464
www.vishay.com
Vishay Siliconix
PACKAGE
PowerPAK
®
MLP55-27L
Reference board
PowerPAK
®
MLP55-27L
Reference board
PowerPAK
®
PowerPAK
®
MLP55-27L
Reference board
MLP55-27L
Reference board
SiC464
SiC463
SiC462
MARKING CODE
SiC461
ORDERING INFORMATION
PART NUMBER
SiC461ED-T1-GE3
SiC461EVB
SiC462ED-T1-GE3
SiC462EVB
SiC463ED-T1-GE3
SiC463EVB
SiC464ED-T1-GE3
SiC464EVB
PART MARKING INFORMATION
=
pin 1 indicator
part number code
Siliconix
logo
ESD
symbol
assembly factory code
year code
week code
lot code
P/N
LL
FYWW
P/N =
=
=
F
Y
WW
LL
=
=
=
=
ABSOLUTE MAXIMUM RATINGS
(T
A
= 25 °C, unless otherwise noted)
ELECTRICAL PARAMETER
V
CIN
, V
IN
EN
SW / PHASE
V
DRV
V
DD
SW / PHASE (AC)
BOOT
A
GND
to P
GND
All other pins
Temperature
Junction temperature
Storage temperature
Power Dissipation
Thermal resistance from junction-to-ambient
Thermal resistance from junction-to-case
ESD Protection
Electrostatic discharge protection
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation
of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum
rating/conditions for extended periods may affect device reliability.
CONDITIONS
Reference to P
GND
Reference to A
GND
Reference to P
GND
Reference to P
GND
Reference to A
GND
Reference to P
GND
; 100 ns
LIMITS
-0.3 to 66
-0.3 to 60
-0.3 to 66
-0.3 to 6
-0.3 to 6
-10 to 72
-0.3 to V
PHASE
+ V
DRV
-0.3 to 0.3
UNIT
V
Reference to A
GND
T
J
T
STG
-0.3 to V
DD
+ 0.3
-40 to +150
-65 to +150
12
2
°C
°C/W
Human body model, JESD22-A114
Charged device model, JESD22-A101
2000
500
V
S20-0679-Rev. N, 27-Aug-2020
Document Number: 65124
3
For technical questions, contact:
powerictechsupport@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
SiC461, SiC462, SiC463, SiC464
www.vishay.com
Vishay Siliconix
RECOMMENDED OPERATING CONDITIONS
(all voltages referenced to GND = 0 V)
PARAMETER
Input voltage (V
IN
)
Control input voltage (V
CIN
)
(1)
Enable (EN)
Bias supply (V
DD
)
Drive supply voltage (V
DRV
)
Output voltage (V
OUT
)
Temperature
Recommended ambient temperature
Operating junction temperature
-40 to +105
-40 to +125
°C
MIN.
4.5
4.5
0
4.75
4.75
0.8
TYP.
-
-
-
5
5.3
-
MAX.
60
60
60
5.25
5.55
0.92 x V
IN
V
UNIT
Note
(1)
For input voltages below 5 V, provide a separate supply to V
CIN
of at least 5 V to prevent the internal V
DD
rail UVLO from triggering
ELECTRICAL SPECIFICATIONS
(V
IN
= V
CIN
= 48 V, V
EN
= 5 V, T
J
= -40 °C to +125 °C, unless otherwise stated)
PARAMETER
Power Supplies
V
DD
supply
V
DD
dropout
V
DD
UVLO threshold, rising
V
DD
UVLO hysteresis
Maximum V
DD
current
V
DRV
supply
V
DRV
dropout
Maximum V
DRV
current
V
DRV
UVLO threshold, rising
V
DRV
UVLO hysteresis
Input current
Shutdown current
Controller and Timing
Feedback voltage
V
FB
input bias current
Transconductance
COMP source current
COMP sink current
Minimum on-time
t
ON
accuracy
On-time range
Frequency range
Minimum off-time
Soft start current
Soft start voltage
S20-0679-Rev. N, 27-Aug-2020
V
FB
I
FB
g
m
I
COMP_SOURCE
I
COMP_SINK
t
ON_MIN.
t
ON_ACCURACY
t
ON_RANGE
f
sw
t
OFF_MIN.
I
SS
V
SS
When V
OUT
reaches regulation
Ultrasonic mode enabled
Ultrasonic mode disabled
T
J
= 25 °C
T
J
= -40 °C to +125 °C
(1)
796
792
-
-
15
15
-
-10
110
20
0
190
3
-
800
800
2
0.3
20
20
90
-
-
-
-
250
5
1.5
804
808
-
-
-
-
110
10
8000
2000
2000
310
7
-
m/V
nA
mS
μA
ns
%
ns
kHz
ns
μA
V
V
DD
V
DD_DROPOUT
V
DD_UVLO
V
DD_UVLO_HYST
I
DD
V
DRV
V
DRV_DROPOUT
V
DRV
V
DRV_UVLO
V
DRV_UVLO_HYST
I
VCIN
I
VCIN_SHDN
Non-switching, V
FB
> 0.8 V
V
EN
= 0 V
V
IN
= V
CIN
= 6 V to 60 V
V
IN
= V
CIN
= 6 V to 60 V
V
IN
= V
CIN
= 5 V
V
IN
= V
CIN
= 5 V, I
VDD
= 10 mA
V
IN
= V
CIN
= 6 V to 60 V
V
IN
= V
CIN
= 6 V to 60 V
V
IN
= V
CIN
= 5 V
V
IN
= V
CIN
= 5 V, I
VDD
= 1 mA
4.75
4.7
-
4
-
3
5.1
4.8
-
50
4
-
-
-
5
5
70
4.25
225
-
5.3
5
160
-
4.25
295
235
4
5.25
-
-
4.5
-
-
5.55
5.2
-
-
4.5
-
325
8
V
mV
V
mV
mA
V
mV
mA
V
mV
μA
SYMBOL
TEST CONDITIONS
MIN.
TYP.
MAX.
UNIT
Document Number: 65124
4
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powerictechsupport@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
SiC461, SiC462, SiC463, SiC464
www.vishay.com
Vishay Siliconix
SYMBOL
TEST CONDITIONS
SiC461 (10 A),
R
ILIM
= 60 k, T
J
= -10 °C to +125 °C
MIN.
TYP.
MAX.
UNIT
ELECTRICAL SPECIFICATIONS
(V
IN
= V
CIN
= 48 V, V
EN
= 5 V, T
J
= -40 °C to +125 °C, unless otherwise stated)
PARAMETER
Fault Protections
10.4
6.4
4.8
3.2
-
-
-
-
-
-
-
-
15
-
-
-
-
2
-
3.75
Power save mode enabled, V
DD
, V
DRV
Pre-reg on
Power save mode disabled, V
DD
, V
DRV
Pre-reg on
Power save mode disabled, V
DRV
Pre-reg
off, V
DD
Pre-reg on, provide external V
DRV
Power save mode enabled, V
DRV
Pre-reg off,
V
DD
Pre-reg on, provide external V
DRV
0
298
494
900
13
8
6
4
20
-80
150
35
20
-10
50
7.5
25
1.35
1.2
0.15
5
-
-
5
2
301
499
1000
15.6
9.6
A
7.2
4.8
-
-
-
-
-
-
-
15
35
-
-
-
-
-
0.8
6.25
100
304
k
504
1100
M
V
μA
V
%
°C
Valley current limit
I
OCP
SiC462 (6 A),
R
ILIM
= 60 k, T
J
= -10 °C to +125 °C
SiC463 (4 A),
R
ILIM
= 40 k, T
J
= -10 °C to +125 °C
(2)
SiC464 (2 A),
R
ILIM
= 60 k, T
J
= -10 °C to +125 °C
Output OVP threshold
Output UVP threshold
Over temperature protection
Power Good
Power good output threshold
Power good hysteresis
Power good on resistance
Power good delay time
EN / MODE / Ultrasonic Threshold
EN logic high level
EN logic low level
EN hysteresis
EN pull down resistance
Ultrasonic mode high Level
Ultrasonic mode low level
Mode pull up current
Mode 1
Mode 2
V
OVP
V
UVP
T
OTP_RISING
T
OTP_HYST
V
FB_RISING_VTH_OV
V
FB_FALLING_VTH_UV
V
FB_HYST
R
ON_PGOOD
t
DLY_PGOOD
V
EN_H
V
EN_L
V
HYST
R
EN
V
ULTRASONIC_H
V
ULTRASONIC_L
I
MODE
V
FB
with respect to 0.8 V reference
Rising temperature
Hysteresis
V
FB
rising above 0.8 V reference
V
FB
falling below 0.8 V reference
%
mV
μs
R
MODE
Mode 3
Mode 4
Notes
(1)
Guaranteed by design
(2)
Guaranteed by design for SiC463 OCP measurements
S20-0679-Rev. N, 27-Aug-2020
Document Number: 65124
5
For technical questions, contact:
powerictechsupport@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
