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PDF ISL6208C Data sheet ( Hoja de datos )
| Número de pieza | ISL6208C | |
| Descripción | High Voltage Synchronous Rectified Buck MOSFET Drivers | |
| Fabricantes | Intersil | |
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DATASHEET
High Voltage Synchronous Rectified Buck MOSFET
Drivers
ISL6208C
The ISL6208C is a high frequency, dual MOSFET driver,
optimized to drive two N-channel power MOSFETs in a
synchronous-rectified buck converter topology. It is especially
suited for mobile computing applications that require high
efficiency and excellent thermal performance. The driver,
combined with an Intersil multiphase buck PWM controller,
forms a complete single-stage core-voltage regulator solution
for advanced mobile microprocessors.
The ISL6208C features 4A typical sinking current for the lower
gate driver. This current is capable of holding the lower
MOSFET gate off during the rising edge of the phase node. This
prevents shoot-through power loss caused by the high dv/dt of
phase voltages. The operating voltage matches the 30V
breakdown voltage of the MOSFETs commonly used in mobile
computer power supplies.
The ISL6208C also features a three-state PWM input that,
working together with Intersil’s multiphase PWM controllers,
will prevent negative voltage output during CPU shutdown. This
feature eliminates a protective Schottky diode usually seen in
microprocessor power systems.
MOSFET gates can be efficiently switched up to 2MHz using
the ISL6208C. Each driver is capable of driving a 3000pF load
with propagation delays of 8ns and transition times under
10ns. Bootstrapping is implemented with an internal Schottky
diode. This reduces system cost and complexity, while allowing
the use of higher performance MOSFETs. Adaptive
shoot-through protection is integrated to prevent both
MOSFETs from conducting simultaneously.
A diode emulation feature is integrated in the ISL6208C to
enhance converter efficiency at light load conditions. This
feature also allows for monotonic start-up into prebiased
outputs. When diode emulation is enabled, the driver will allow
discontinuous conduction mode by detecting when the
inductor current reaches zero and subsequently turning off the
low-side MOSFET gate.
Features
• Dual MOSFET drives for synchronous rectified bridge
• Adaptive shoot-through protection
• 0.5Ω ON-resistance and 4A sink current capability
• Supports high switching frequency up to 2MHz
- Fast output rise and fall time
- Low propagation delay
• Three-state PWM input for power stage shutdown
• Internal bootstrap Schottky diode
• Low bias supply current (5V, 80µA)
• Diode emulation for enhanced light load efficiency and
prebiased start-up applications
• VCC POR (Power-On-Reset) feature integrated
• Low three-state shutdown holdoff time (typical 160ns)
• Pin-to-pin compatible with ISL6207
• DFN package
• Pb-free (RoHS compliant)
Applications
• Core voltage supplies for Intel™ and AMD™ mobile
microprocessors
• High frequency low profile DC/DC converters
• High current low output voltage DC/DC converters
• High input voltage DC/DC converters
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
• Technical Brief TB389 “PCB Land Pattern Design and
Surface Mount Guidelines for MLFP Packages”
• Technical Brief TB447 “Guidelines for Preventing
Boot-to-Phase Stress on Half-Bridge MOSFET Driver ICs”
June 1, 2016
FN8395.1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2012, 2016. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL6208C
Absolute Maximum Ratings
Supply Voltage (VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V
Input Voltage (VFCCM, VPWM) . . . . . . . . . . . . . . . . . . . . -0.3V to VCC + 0.3V
BOOT Voltage (VBOOT-GND) . . . . . . . . . . . -0.3V to 33V (DC) or 36V (<20ns)
BOOT To PHASE Voltage (VBOOT-PHASE). . . . . . . . . . . . . . . . -0.3V to 7V (DC)
-0.3V to 9V (<10ns)
PHASE Voltage (Note 4) . . . . . . . . . . . . . . . . . . . . . . . . . . (GND - 0.3V) to 30V
GND - 8V (<20ns Pulse Width, 10µJ)
UGATE Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . VPHASE - 0.3V (DC) to VBOOT
VPHASE - 5V (<20ns Pulse Width, 10µJ) to VBOOT
LGATE Voltage . . . . . . . . . . . . . . . . . . . . . . . . .GND - 0.3V (DC) to VCC + 0.3V
GND - 2.5V (<20ns Pulse Width, 5µJ) to VCC + 0.3V
Thermal Information
Thermal Resistance (Typical)
JA (°C/W) JC (°C/W)
8 Ld 2x2 DFN Package (Notes 5, 6) . . . . . .
89
24
Maximum Storage Temperature Range . . . . . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493
Recommended Operating Conditions
Ambient Temperature Range
Industrial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +100°C
Hi-Temp Commercial . . . . . . . . . . . . . . . . . . . . . . . . . . . .-10°C to +100°C
Maximum Operating Junction Temperature . . . . . . . . . . . . . . . . . . +125°C
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V ±10%
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
4. The Phase Voltage is capable of withstanding -7V when the BOOT pin is at GND.
5. JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
6. For JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications Recommended operating conditions, unless otherwise noted. Boldface limits apply across the operating
temperature range, -40°C to +100°C (Industrial), -10°C to +100°C (Hi-Temp Commercial).
SYMBOL
PARAMETER
TEST CONDITIONS
MIN MAX
(Note 7) TYP (Note 7) UNIT
VCC SUPPLY CURRENT
IVCC Bias Supply Current
POR
PWM pin floating, VFCCM = 5V
- 80 -
µA
VCC Rising
VCC Falling
Hysteresis
-
2.40
-
3.40
2.90
500
3.90
-
-
V
V
mV
BOOTSTRAP DIODE
VF
PWM INPUT
Forward Voltage
VVCC = 5V, forward bias current = 2mA
0.50 0.55 0.65
V
IPWM
Input Current
tTSSHD
FCCM INPUT
PWM Three-State Rising Threshold
PWM Three-State Falling Threshold
Three-State Shutdown Hold-Off Time
VPWM = 5V
VPWM = 0V
VVCC = 5V
VVCC = 5V
VVCC = 5V, temperature = +25°C
-
-
0.70
3.5
100
250
-250
1.00
3.8
175
-
-
1.30
4.1
250
µA
µA
V
V
ns
FCCM LOW Threshold
0.50
-
-
V
FCCM HIGH Threshold
- - 2.0 V
SWITCHING TIME
tRU
tRL
tFU
tFL
tPDLU
UGATE Rise Time
LGATE Rise Time
UGATE Fall Time
LGATE Fall Time
UGATE Turn-Off Propagation Delay
VVCC = 5V, 3nF load
VVCC = 5V, 3nF load
VVCC = 5V, 3nF load
VVCC = 5V, 3nF load
VVCC = 5V, outputs unloaded
- 8.0 -
- 8.0 -
- 8.0 -
- 4.0 -
- 18 -
ns
ns
ns
ns
ns
Submit Document Feedback
5
FN8395.1
June 1, 2016
5 Page 
ISL6208C
Revision History The revision history provided is for informational purposes only and is believed to be accurate, but not warranted.
Please go to web to make sure you have the latest revision.
DATE
REVISION
CHANGE
June 1, 2016
FN8395.1
Added note to VCC pin description on page 4 and to “Three-State PWM Input” on page 9 that +5V supply
should be common with Intersil controller.
Added AC specification to BOOT-GND Absolute Maximum Rating on page 5.
November 29, 2012
FN8395.0
On page 12 - Updated L8.2x2D POD from rev 0 to rev 1. Updates since rev 0:
Tiebar Note 5 updated From: "Tiebar shown (if present) is a non-functional feature."
To: "Tiebar shown (if present) is a non-functional feature and may be located on any of the 4 sides (or
ends)."
Initial Release
About Intersil
Intersil Corporation is a leading provider of innovative power management and precision analog solutions. The company's products
address some of the largest markets within the industrial and infrastructure, mobile computing and high-end consumer markets.
For the most updated datasheet, application notes, related documentation and related parts, please see the respective product
information page found at www.intersil.com.
You may report errors or suggestions for improving this datasheet by visiting www.intersil.com/ask.
Reliability reports are also available from our website at www.intersil.com/support.
For additional products, see www.intersil.com/en/products.html
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time
without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be
accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third
parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
Submit Document Feedback 11
FN8395.1
June 1, 2016
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ISL6208C.PDF ] | |
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