FSFR1700HSL FAIRCHILD [Fairchild Semiconductor], FSFR1700HSL Datasheet

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FSFR1700HSL

Manufacturer Part Number
FSFR1700HSL
Description
Manufacturer
FAIRCHILD [Fairchild Semiconductor]
Datasheet

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Part Number:
FSFR1700HSL
Manufacturer:
FAIRCHILD
Quantity:
8 000
© 2011 Fairchild Semiconductor Corporation
FSFR1800 / FSFR1700-HS • Rev.1.0.0
FSFR-HS Series —
(FPS™) for Half-Bridge Resonant Converters
Features
Applications
Ordering Information
Notes:
1.
2.
FSFR1800HSL
FSFR1700HSL
Part Number
FSFR1800HS
FSFR1700HS
Variable Frequency Control with 50% Duty Cycle
High Efficiency through Zero Voltage Switching (ZVS)
Built-in High-Side Gate Driver IC
Internal UniFET™s with Fast-Recovery Type Body
Fixed Dead Time (350ns) Optimized for MOSFETs
Operating Frequency Up to 600kHz for Soft-Start
Self Auto-Restart Operation for All Protections, Despite
Line UVLO with Programmable Hysteresis Level
Simple On/Off with Line UVLO Pin
Easy Configuration and Compatibility with FAN7930 for
Protection Functions: Over-Voltage Protection (OVP),
PDP and LCD TVs
Desktop PCs and Servers
Adapters
Telecom Power Supplies
for Half-Bridge Resonant Converter Topology
Diode (t
External LV
Line UVLO without External Components
Over-Current Protection (OCP), Abnormal Over-
Current Protection (AOCP), Internal Thermal
Shutdown (TSD)
The junction temperature can limit the maximum output power.
Maximum practical continuous power in an open-frame design at 50°C ambient.
rr
=160ns Typical)
CC
Bias
Package
L-Forming
L-Forming
9-SIP
9-SIP
9-SIP
9-SIP
Temperature
-40 to +130°C
-40 to +130°C
Operating
Junction
Advanced Fairchild Power Switch
R
DS(ON_MAX)
0.95Ω
1.25Ω
Description
The FSFR-HS is a highly integrated power switch
designed
converters. Offering everything necessary to build a
reliable and robust resonant converter, the FSFR-HS
simplifies designs while improving productivity and
performance. The FSFR-HS combines power MOSFETs,
a high-side gate-drive circuit, an accurate current-
controlled oscillator, and built-in protection functions.
The high-side gate-drive circuit has a common-mode
noise cancellation capability, which provides stable
operation with excellent noise immunity. Using zero-
voltage-switching (ZVS) technique dramatically reduces
the switching losses and significantly improves efficiency.
The ZVS also reduces the switching noise noticeably,
even though the operating frequency increases. It allows
a small Electromagnetic Interference (EMI) filter, besides
the high operating frequency, to reduce the volume of the
resonant tank and to increase power density.
The FSFR-HS can be applied to resonant converter
topologies such as series resonant, parallel resonant,
and LLC resonant converters.
Related Resources
AN4151 — Half-Bridge LLC Resonant Converter Design
Using FSFR-Series Fairchild Power Switch (FPS™)
Maximum Output Power
(V
without Heatsink
IN
=350~400V)
for
120W
100W
high-efficiency
(1,2)
Power with Heatsink
(V
Maximum Output
half-bridge
IN
=350~400V)
260W
200W
www.fairchildsemi.com
August 2011
resonant
(1,2)

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FSFR1700HSL Summary of contents

Page 1

... Package FSFR1800HS 9-SIP 9-SIP FSFR1800HSL L-Forming FSFR1700HS 9-SIP 9-SIP FSFR1700HSL L-Forming Notes: 1. The junction temperature can limit the maximum output power. 2. Maximum practical continuous power in an open-frame design at 50°C ambient. © 2011 Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 Advanced Fairchild Power Switch ...

Page 2

Application Circuit Diagram Figure 1. Typical Application Circuit (LLC Resonant Half-Bridge Converter) Block Diagram © 2011 Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 Figure 2. Internal Block Diagram 2 www.fairchildsemi.com ...

Page 3

Pin Configuration Pin Definitions Pin # Name 1 DL This is the drain of the high-side MOSFET, typically connected to the input DC link voltage This is the line-sensing pin for the input voltage Under-Voltage Lockout (UVLO). This ...

Page 4

Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure ...

Page 5

Electrical Characteristics T =25° =17V and Symbol Parameter MOSFET Section BV Drain-to-Source Breakdown Voltage DSS R On-State Resistance DS(ON) Body Diode Reverse t (7) rr Recovery Time Supply Section I Offset Supply ...

Page 6

Typical Performance Characteristics These characteristic graphs are normalized at T 1.1 1.05 1 0.95 0.9 -50 - Figure 4. Low-Side MOSFET Duty Cycle vs. Temperature 1.1 1.05 1 0.95 0.9 -50 - Figure 6. High-Side V ...

Page 7

Typical Performance Characteristics These characteristic graphs are normalized at T 1.1 1.05 1 0.95 0.9 -50 - Temp ( Figure 10. LV OVP Voltage vs. Temperature CC Figure 12. V vs. Temperature RT,RESET Figure 14. V vs. Temperature ...

Page 8

Typical Performance Characteristics These characteristic graphs are normalized at T Figure 16. t DELAY,RESET © 2011 Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 (Continued) =25ºC. A vs. Temperature 8 Figure 17. V vs. Temperature RT,RESET www.fairchildsemi.com ...

Page 9

Functional Description 1. Basic Operation: FSFR-HS series is designed to drive high-side and low-side MOSFETs complementarily with 50% duty cycle. A fixed dead time of 350ns is introduced between consecutive transitions, as shown in Figure 18. Once LV is higher ...

Page 10

The initial maximum frequency can be set up to 600kHz, which is given by: 1  f    ss 792 min SS The soft-start time can be calculated by: ...

Page 11

C can be used to reduce some noise induced from Filter transformer or switching transition. Generally, hundreds of pico-farad to tens of nano-farad is adequate, depending on the quantity of noise. The start and stop input-voltage can be calculated as: ...

Page 12

Figure 29. Capacitive Sensing © 2011 Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 9. PCB Layout Guidelines: Duty imbalance problems may occur due to the radiated noise from the main transformer, the inequality of the secondary side leakage inductances ...

Page 13

Physical Dimensions Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or ...

Page 14

Physical Dimensions Figure 32. 9-Lead, Single Inline Package (SIP), L-Forming Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and ...

Page 15

Fairchild Semiconductor Corporation FSFR1800 / FSFR1700-HS • Rev.1.0.0 15 www.fairchildsemi.com ...

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