DATASHEET
ISL8212M
FN8990
Rev.1.00
Feb 15, 2019
15A High Efficiency Step-Down Power Module
The ISL8212M power module is a single channel,
synchronous step-down, non-isolated complete power
supply featuring the proprietary Renesas R4™
Technology. The module supports a wide 4.5V to 16.5V
input voltage range and a wide 0.5V to 5V output range
capable of delivering up to 15A of continuous current,
and is optimized for high power density. Integrated
LDOs provide module bias voltage, allowing for single
supply operation.
The proprietary Renesas R4 control scheme has
extremely fast transient performance, accurately
regulated frequency control, and all internal
compensation. An efficiency enhancing PFM mode
greatly improves light-load efficiency. The ISL8212M
allows for easy R4 loop optimization, resulting in fast
transient performance across a wide range of
applications, including all ceramic output filters.
The power module integrates all power and most passive
components and requires only a few external components
to operate. A set of optional external resistors provides
very flexible configuration options (such as frequency,
VOUT, and AV gain). The ISL8212M also features remote
voltage sensing and completely eliminates any potential
difference between remote and local grounds, improving
regulation and protection accuracy. A programmable
soft-start reduces the inrush current from the input
supply. A precision enable input and power-good
(PGOOD) flag are available to coordinate the start-up of
the ISL8212M with other voltage rails, which is
especially useful for power sequencing. Excellent
efficiency and low thermal resistance permit full power
operation without heatsinks.
Input Undervoltage Lockout (UVLO), over-temperature,
overcurrent, output overvoltage, and output prebias
start-up protections ensure safe operations under
abnormal operating conditions.
The ISL8212M is available in a compact RoHS
compliant thermally-enhanced 12mmx11mmx5.3mm
HDA package.
Applications
Features
• R4 Technology
• Linear control loop for optimal transient response
• Variable frequency and duty cycle control during
load transient for fastest possible response
• Inherent voltage feed-forward for wide range
input
• Input voltage range: 4.5V to 16.5V
• Output voltage range: 0.5V to 5V
• ±1.5% load and line regulation with remote sense
• Supports all ceramic solutions
• Integrated LDOs for single input rail solution
• 256 output voltage levels with a configuration pin
• Seven switching frequency options from 300kHz to
1MHz
• PFM operation option for improved light-load
efficiency
• Start-up into precharged load
• Power-good monitor for soft-start and fault detection
• Comprehensive fault protection for high system
reliability
• Over-temperature protection
• Output overcurrent and short-circuit protection
• Output overvoltage and undervoltage protection
• Open remote sense protection
• Input UVLO and power sequence as well as fault
reset
• Thermally enhanced 12mmx11mmx5.3mm HDA
package
Related Literature
For a full list of related documents, visit our website:
• ISL8212M device page
• Servers, telecom, storage, and datacom
• Industrial/ATE and networking equipment
• Graphics cards
• General purpose power for ASIC, FPGA, DSP, and
memory
FN8990 Rev.1.00
Feb 15, 2019
Page 1 of 41
ISL8212M
Contents
1.
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1
1.2
1.3
1.4
1.5
2.
Typical Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
4
5
6
6
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1
2.2
2.3
2.4
3.
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Thermal Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Typical Performance Curves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1
3.2
3.3
3.4
3.5
4.
Efficiency Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Voltage Ripple . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Load Transient Response Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Start-Up and Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Derating Curves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
14
16
17
18
Operating the ISL8212M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
Configuring Internal Bias and LDO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enabling and Disabling the ISL8212M. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting Up Resistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Soft-Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Voltage Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Monitoring and Compensation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fault Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PGOOD Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PFM Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20
20
21
24
24
31
32
34
34
5.
Layout Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.
Thermal Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
7.
Package Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.1
7.2
7.3
7.4
PCB Layout Pattern Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Vias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stencil Pattern Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reflow Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
37
37
37
38
8.
Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
9.
Package Outline Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
FN8990 Rev.1.00
Feb 15, 2019
Page 2 of 41
ISL8212M
1.
1. Overview
Overview
1.1
Typical Application Circuit
ISL8212M
4.5V to 16.5V
VIN
15A
VOUT = 0.5V to 5V
VIN
CIN1
330µF
VOUT
R1
CIN
4x22µF
VIN1
PHASE
EN
7VLDO
COUT
4x220µF
2
20k
PGOOD
VSEN
PVCC
RGND
VDD
CSEN
PVCC
2
4.7µF
R2
R3
R4
R5
R6
R7
R8
R9
SET1
CSRTN
SET2
NTC
SET3
NC1
SET4
NC2
1.54k
PVCC
NC3
SGND
•
•
•
•
•
•
•
PGND1
PGND2
For VOUT = 3.3V, minimum VIN is 5.5V; for VOUT= 5V, minimum VIN is 8V.
R1: see Table 2 on page 7.
R2 and R3: to set output voltage, see Table 4 on page 22 for typical VOUT.
R4 and R5: to set PFM/PWM mode and temperature compensation, see Table 5 on page 22.
R6 and R7: to set fSW, AV gain, OCP hiccup/latch off, and ultrasonic PWM enable, see Table 6 on page 23.
R8 and R9: to set soft start, RR impedance, and AV gain multiplier (1x or 2x), see Table 7 on page 23.
R2 to R9, see Table 2 for typical output voltage selections.
Figure 1. Typical Application Circuit 5V Input Applications
5.3mm
11mm
FN8990 Rev.1.00
Feb 15, 2019
12mm
Page 3 of 41
ISL8212M
PGND1
PGND2
SGND
7VLDO
SET3
SET2
Block Diagram
SET4
FN8990 Rev.1.00
Feb 15, 2019
1.2
Controller
Set Interface
Soft-Start and
Fault Logic
TEMP
IOUT
VOUT
OCP
VIN1
EN
OTP
1µF
7V LDO
PVCC
VIN1
5V LDO
0.1µF
Modulator
TP1
NTC
VIN1
Driver
VSEN
VDD
RGND
Switching
Frequency
1µF
VIN
Gate Control Logic
0.1µF
Driver
PHASE
0.27µH
TP3
0.1µF
Current Sense and
Temperature
Compensation
Overcurrent and
Over-Temperature
VOUT
CSEN
TP2
SET1
Overvoltage/
Undervoltage
Internal Compensation Amplifier and
Reference Voltage Circuit
Figure 2. Block Diagram
VSEN
1. Overview
Page 4 of 41
RGND
CSRTN
ISL8212M
1.3
1. Overview
Ordering Information
Part Number
(Notes 2, 3)
Part Marking
Temp Range (°C)
Tape and Reel
(Units) (Note 1)
Package (RoHS Compliant)
ISL8212M
-40 to +125
-
83 Ld 12x11 HDA Module
ISL8212MFRZ
Pkg. Dwg. #
Y83.12x11
ISL8212MFRZ-T
ISL8212M
-40 to +125
720
83 Ld 12x11 HDA Module
Y83.12x11
ISL8212MFRZ-T1
ISL8212M
-40 to +125
100
83 Ld 12x11 HDA Module
Y83.12x11
ISL8212MEVAL1Z
Evaluation Board
Notes:
1. See TB347 for details about reel specifications.
2. These plastic packaged products are RoHS compliant by EU exemption 7C-I and employ special Pb-free material sets; molding
compounds/die attach materials and NiPdAu plate - e4 termination finish which is compatible with both SnPb and Pb-free soldering
operations. RoHS compliant products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free
requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), see the ISL8212M device page. For more information about MSL, see TB363.
Table 1. Key Differences Between Family of Parts
Parameters
Load Current (A)
ISL8282M
ISL8280M
ISL8212M
ISL8210M
15
10
15
10
Minimum VIN (V)
4.5
4.5
4.5
4.5
Maximum VIN (V)
16.5
16.5
16.5
16.5
Minimum VOUT (min) (V)
0.5
0.5
0.5
0.5
Maximum VOUT (V)
5
5
5
5
Peak efficiency (%)
95.2
95.2
95.2
95.2
POR
Yes
Yes
Yes
Yes
Minimum Switching
Frequency (kHz)
255
255
255
255
Maximum Switching
Frequency (kHz)
1130
1130
1130
1130
Control Type
R4
R4
R4
R4
Sync Capability
No
No
No
No
Load Sharing
No
No
No
No
PMBus
Yes
Yes
No
No
FN8990 Rev.1.00
Feb 15, 2019
Page 5 of 41
ISL8212M
1. Overview
1.4
Pin Configuration
83 Ld 12x11 HDA
Top View
1
2
3
4
5
6
7
A
NC1
VDD
EN
EN
NC
NC
NC
B
NC2
C
NC3
D
RGND
E
VSEN
7VLDO
VIN1
9
10
11
12
PGND2
PGND2
PGND2
PGND2
PGND2
PGND2
PGND2
PGND2
VIN
PHASE
TP2
PGND1
TP1
PGOOD
SGND
SGND
SGND
F
CSRTN
SGND
SGND
SGND
G
CSEN
TP3
SET3
SET1
VIN
VIN
VIN
PHASE
PGND1
PGND1
H
NTC
SET4
SET2
VIN
VIN
VIN
PHASE
PGND1
PGND1
VIN
VIN
VIN
PHASE
PGND1
PGND1
J
1.5
PVCC
8
VIN
K
VOUT
VOUT
VOUT
VOUT
VOUT
PHASE
PHASE
PHASE
PHASE
PHASE
PGND1
L
VOUT
VOUT
VOUT
VOUT
VOUT
PHASE
PHASE
PHASE
PHASE
PHASE
PGND1
Functional Pin Descriptions
Pin Number
Symbol
A5, A6, A7
NC
A9, A10, A11, A12, B9,
B10, B11, B12
PGND2
Power ground. The pads are connected to the source of the low-side MOSFET inside the module
and remove heat from the module.
F7, F9, G7, G8, G9, H7,
H8, H9, J7, J8, J9
VIN
Power input. Connect the pads directly to an input rail in the range of 4.5V to 16.5V. Connect the
input ceramic capacitors between VIN and PGND1 as close as possible to the module.
F10, G10, H10, J10, K7,
K8, K9, K10, K11, L7,
L8, L9, L10, L11
PHASE
Phase node connection. The pads are connected to the source of high-side MOSFET, the drain of
low-side MOSFET, output filter inductor, and return path for the UGATE high-side MOSFET driver.
F12, G11, G12, H11,
H12, J11, J12, K12, L12
PGND1
Power ground. The pads are the sources of the lower MOSFET inside the module and should be
connected to the (-) terminals of the external input capacitors and output capacitors.
K1, K2, K3, K4, K5, L1,
L2, L3, L4, L5
VOUT
FN8990 Rev.1.00
Feb 15, 2019
Description
No connection pads. The pads dissipate the inductor heat and provide good thermal
performance. Do not connect to any other circuits.
Regulated power module output. Apply the output load between VOUT and PGND1.
Page 6 of 41
ISL8212M
1. Overview
Pin Number
Symbol
A1
NC1
Connected to power ground.
Logic bias supply. Connect this pin externally to the PVCC rail.
A2
VDD
A3, A4
EN
Description
Precision enable input. Pulling EN above the rising threshold voltage initiates the soft-start
sequence. Pulling EN below the failing threshold voltage suspends module operation.
B1
NC2
Connected to power ground.
C1
NC3
Connected to power ground.
C4
7V LDO
C5
VIN1
Input voltage pin for the R4 loop (5V) and LDO (7V). Place a high quality low ESR ceramic
capacitor (1.0μF, X7R) in close proximity to the pin.
C6
PVCC
Output of the 5V LDO that biases internal control circuits and MOSFET drivers of the ISL8212M.
Place a high quality low ESR capacitor (4.7µFX7R) in close proximity to this pin.
C7
TP1
D1
RGND
Monitors the negative rail of the module output. Connect to ground at the point of regulation.
E1
VSEN
Monitors the positive rail of the module output. Connect to the point of regulation.
E2
PGOOD
E3, E4, E5, F3, F4, F5
SGND
Signal ground pads. The small-signal ground is common to all control circuitry and all voltage
levels are measured with respect to this pin. Tie SGND to a solid low noise GND plane.
This pin monitors the negative flow of output current for overcurrent protection and telemetry.
7V LDO used to bias the current sensing amplifier.
Test pad, leave this pin open.
Open-drain indicator output. The PGOOD signal is asserted when the output voltage is within
±12.5% of the nominal set output voltage and deasserted when the output voltage is outside of
the stated range or the EN pin is pulled low.
F2
CSRTN
F11
TP2
G2
CSEN
G4
TP3
G5
SET3
Programming pin for ultrasonic PFM operation, fault behavior, switching frequency, and R4 (AV)
control loop gain.
G6
SET1
Programming pin for output voltage.
H2
NTC
Input pin for the temperature measurement. An NTC thermistor and a decoupling capacitor inside
the module are connected between this pin and SGND. Connect this pin through a resistor
(1.54kΩ) to a VDD pad externally. The voltage at this pin is inversely proportional to the module
temperature.
H5
SET4
Programming pin for modulator (R4) RR impedance and output slew rate during Soft-Start (SS). It
also sets the AV gain multiplier to 1x or 2x and determines the AV gain on SET3.
H6
SET2
Programming pin for PWM/PFM mode and temperature compensation.
Test pad, leave this pin open.
Monitors the positive flow of output current for overcurrent protection
Test pad, leave this pin open.
Table 2. ISL8212M Design Guide Matrix of Typical Applications
VOUT (V)
VIN (V)
Frequency (kHz)
AV Gain
RR (Ω)
TCOMP (°C)
R1 (Ω)
0.5
5
400
49
200k
5
0
400
49
200k
5
0
10
12
15
0.6
5
10
12
15
FN8990 Rev.1.00
Feb 15, 2019
Page 7 of 41
ISL8212M
1. Overview
Table 2. ISL8212M Design Guide Matrix of Typical Applications (Continued)
VOUT (V)
VIN (V)
Frequency (kHz)
AV Gain
RR (Ω)
TCOMP (°C)
R1 (Ω)
0.75
5
400
49
200k
5
0
400
49
200k
5
0
400
49
200k
5
0
400
26
200k
5
0
500
26
200k
5
0
500
26
200k
5
0
600
26
200k
5
0
700
26
200k
5
0
10
12
15
0.9
5
10
12
15
1
5
10
12
15
1.2
5
10
12
15
1.5
5
10
12
15
1.8
5
10
12
15
2.5
5
10
12
15
3.3
5.5
10
12
15
5
8
121 (Note 4)
850
26
200k
5
0
10
12
121 (Note 4)
15
Note:
4. A 121Ω resistor is needed only when OCP behavior is set to Retry.
FN8990 Rev.1.00
Feb 15, 2019
Page 8 of 41
ISL8212M
2.
2. Specifications
Specifications
2.1
Absolute Maximum Ratings
Parameter
Minimum
Maximum
Unit
VDD, PVCC, VSEN
-0.3
7
V
Module Input Voltage, VIN
-0.3
20
V
Module Input Voltage, VIN1
-0.3
20
V
7VLDO
-0.3
7.75
V
BOOT Voltage (VBOOT-GND)
-0.3
30
V
BOOT to PHASE Voltage (VBOOT-PHASE) (DC)
-0.3
7
V
BOOT to PHASE Voltage (VBOOT-PHASE) (
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