DATASHEET
ISL99227, ISL99227B
Smart Power Stage (SPS) Module with Integrated High Accuracy Current and
Temperature Monitors
The
ISL99227
and
ISL99227B
are Smart Power Stage (SPS)
compatible with Intersil’s ISL68xxx/69xxx Digital Multiphase
(DMP) controllers and phase doubler (ISL6617A), respectively.
The ISL99227 and ISL99227B have integrated high accuracy
current and temperature monitors that can be fed back to the
controller and doubler to complete a multiphase DC/DC
system. They simplify design and increase performance by
eliminating the DCR sensing network and associated thermal
compensation. Light-load efficiency is supported through a
dedicated LFET control pin. An industry leading thermally
enhanced 5x5 PQFN package allows minimal overall PCB real
estate.
The ISL99227 and ISL99227B feature a 3.3V compatible, 5.0V
compatible tri-state PWM input that, working together with
Intersil’s multiphase PWM controllers, provide a robust
solution in the event of abnormal operating conditions. The
ISL99227 and ISL99227B also improve system performance
and reliability with integrated fault protection of UVLO,
over-temperature, and overcurrent. An open-drain fault
reporting pin simplifies the handshake between SPS and
Intersil controllers and can be used to disable the controller
during start-up and fault conditions.
FN8684
Rev.3.00
Oct 2, 2017
Features
• Input range: +4.5V to +18V
• Supports 60A DC current
• ISL99227 with 3.3V compatible tri-state PWM input
• ISL99227B with 5.0V compatible tri-state PWM input
• Downslope current sensing
• ±3% accuracy current monitor (IMON) with REFIN input
• 8mV/°C temperature monitor with OT flag
• Dedicated low-side FET control input
• Comprehensive fault protection for high system reliability
- High-side FET short and overcurrent protection
- Over-temperature protection
- V
CC
and V
IN
Undervoltage Lockout (UVLO)
• Open-drain fault reporting output
• Up to 2MHz switching frequency
• Pb-free (RoHS compliant), 32 Ld 5x5 PQFN
Related Literature
• For a full list of related documents, visit our website
-
ISL99227, ISL99227B
product pages
Applications
• High frequency and high efficiency VRM and VRD
• Core, graphic, and memory regulators for microprocessors
• High density VR for server, networking, and cloud computing
• POL DC/DC converters and video gaming consoles
+5V
VCC
PVCC
BOOT
PHASE
+12V
VIN
LGCTRL
PWM
PWM
IMON
REFIN
TMON
FAULT#
ISL68xxx/
CSRTN#n
ISL69xxx
CONTROLLER
TEMP
EN
CS#n
SHOOT-
THROUGH
PROTECTION
PVCC
SMART
CONTROL
SW
L
OUT
V
OUT
C
OUT
ISL99227
GND
GND
GND
FIGURE 1. ISL99227 SIMPLIFIED APPLICATION BLOCK DIAGRAM
FN8684 Rev.3.00
Oct 2, 2017
Page 1 of 17
ISL99227, ISL99227B
Functional Block Diagram
PVCC
PHASE
BOOT
VIN
VIN
UVLO
BOOT
SWITCH
CONTROL
HFET
HS
DRIVER
VIN
POR
2.5V
LDO
VCC
CSH
90A
GH_BLANK
CONTROL
2.5V
VCC
UVLO
-
+
OCH
VCC
POR
VCC-BOOT LEVEL
SHIFTER
GH
20k
PWM
HFET
SHORT
+
-
FAULT#
OR
FUNCTION
Ordering Information
PART NUMBER
(Notes
1, 2, 3)
ISL99227IRZ-T
ISL99227HRZ-T
ISL99227FRZ-T
ISL99227BFRZ-T
NOTES:
1. Refer to
TB347
for details on reel specifications.
2. These Intersil plastic packaged products are RoHS compliant by EU exemption 7A and employ special Pb-free material sets, molding compounds/die
attach materials, and 100% matte tin plate plus anneal (e3) termination finish which is compatible with both SnPb and Pb-free soldering operations.
Intersil 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 product information pages for
ISL99227, ISL99227B.
For more information on MSL, see Tech Brief
TB363.
PART
MARKING
27I
27H
27F
27B
TEMP RANGE
(°C)
-40 to +85
-10 to +100
-40 to +125
-40 to +125
CURRENT
RATING
60A
60A
60A
60A
PWM INPUT
(V)
3.3
3.3
3.3
5.0
TAPE AND REEL
(UNITS)
3k
3k
3k
3k
PACKAGE
(RoHS COMPLIANT)
32 Ld 5x5 PQFN Double Cooling
32 Ld 5x5 PQFN Double Cooling
32 Ld 5x5 PQFN Double Cooling
32 Ld 5x5 PQFN Double Cooling
PKG.
DWG. #
L32.5x5V
L32.5x5V
L32.5x5V
L32.5x5V
FN8684 Rev.3.00
Oct 2, 2017
+
16.5k
V
LGH
+
33.5k (for 3.3V)
16.5k (for 5.0V)
-
-
V
UGH
PWMH
PWM
LOGIC
SW
DEAD TIME AND
SHOOT-THROUGH
LOGIC
V(T
J
)
CAL
AND
LFET
PVCC
CSL
GL
GL_BLANK
CONTROL
LS
DRIVER
PWML
REFIN
IMON
100mV
+
-
PHASE
GL
OCH
OT
AGND-PGND
LEVEL SHIFTER
LEV
SHFT
2.5V
OT
+
V (T
J
) = 0.6V + 8mV * T
J
OCH
T
J
-
V(T
MAX
)
V(T
J
)
+
-
TEMP
SENSE
1µs
PULSE
REFIN + 1.2V
VCC
POR
VIN
POR
LGCTRL TMON
NC
GND
FIGURE 4. FUNCTIONAL BLOCK DIAGRAM
Page 4 of 17
ISL99227, ISL99227B
TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS
CURRENT
RATING PWM THERMAL OCP
(A)
(V)
FLAG
FLAG IMON TMON
P2P
COMPATIBLE
PART #
PACKAGE
USED WITH
5.0V PWM POWER STAGE FAMILY
ISL99125B
ISL99135B
ISL99227B
25
35
60
5.0
5.0
5.0
No
No
Yes
No
No
Yes
No
No
Yes
No
No
Yes
24 Ld 3.5x5 QFN ISL99135B
24 Ld 3.5x5 QFN ISL99125B
32 Ld 5x5 PQFN N/A
Analog Controllers: ISL633x, ISL636x, ISL637x,
ISL95829, ISL9585x
Digital Hybrid Controllers: ISL68201, ISL6388/98
Full Digital Controller: ZL8802
Phase Doublers: ISL6617, ISL6617A (see
Figure 3 on
page 3)
3.3V PWM POWER STAGE FAMILY
ISL99140
ISL99227
40
60
3.3
3.3
Yes
Yes
No
Yes
No
Yes
No
Yes
40 Ld 6x6 QFN
N/A
Full Digital Controllers: ISL68/69xxx (see
Figure 2 on
page 2),
ZL8802
Digital Hybrid Controllers: ISL68201, ISL6388/98
(3.3V PWM Setting)
32 Ld 5x5 PQFN N/A
Pin Configuration
ISL99227, ISL99227B
(32 LD PQFN)
TOP VIEW
FAULT#
PHASE
REFIN
TMON
BOOT
25
IMON
PWM
GND
VIN
32
LGCTRL
31
30
29
28
27
26
24
23 VI N
1
2
3
4
5
6
VCC
PVCC
GND
NC
GND
GND
GND
GND
33
VIN
34
22 VIN
21 VIN
GND
35
20 GND
19 GND
18 GND
17 GND
7
8
9
SW
10
11
12
13
14
15
16
SW
SW
SW
SW
SW
SW
FN8684 Rev.3.00
Oct 2, 2017
SW
Page 5 of 17
嵌入式系统
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