FSFR2100_08 FAIRCHILD [Fairchild Semiconductor], FSFR2100_08 Datasheet

FSFR2100_08

Manufacturer Part Number

FSFR2100_08

Description

Manufacturer

FAIRCHILD [Fairchild Semiconductor]

Datasheet

1.FSFR2100_08.pdf (17 pages)

Current page: 1 of 17
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FSFR series • 1.0.3

FSFR-Series —

for Half-Bridge Resonant Converters

Features

Applications

Ordering Information

Notes:

FSFR2100

FSFR2000

FSFR1900

FSFR1800

FSFR1700

Number

Variable Frequency Control with 50% Duty Cycle

for Half-bridge Resonant Converter Topology

High Efficiency through Zero Voltage Switching (ZVS)

Internal SuperFET™s with Fast-Recovery Type

Body Diode (t

with Fast-Recovery Type Body Diode (t

FSFR2000/1900/1800/1700.

Fixed Dead Time (350ns) Optimized for MOSFETs

Up to 300kHz Operating Frequency

Pulse Skipping for Frequency Limit (Programmable)

at Light-Load Condition

Remote On/Off Control Using Control Pin

Protection Functions: Over-Voltage Protection

(OVP), Over-Load Protection (OLP), Over-Current

Protection (OCP), Abnormal Over-Current Protection

(AOCP), Internal Thermal Shutdown (TSD)

PDP and LCD TVs

Desktop PCs and servers

Adapters

Telecom Power Supplies

Audio Power Supplies

The junction temperature can limit the maximum output power.

Maximum practical continuous power in an open-frame design at 50°C ambient.

All standard Fairchild Semiconductor products are RoHS compliant and many are also “GREEN” or going green. For Fairchild’s

definition of “green” please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.

Part

Package

=120ns) for FSFR2100 and UniFETs

9-SIP

Temperature

-40 to +130°C

Operating

Junction

Fairchild Power Switch (FPS™)

<160ns) for

DS(ON_MAX)

0.38Ω

0.67Ω

0.85Ω

0.95Ω

1.25Ω

Description

The FSFR-series are a highly integrated power switches

designed

converters. Offering everything necessary to build a

reliable and robust resonant converter, the FSFR-series

simplifies designs and improves productivity, while

improving performance. The FSFR-series combines

power MOSFETs with fast-recovery type body diodes, a

high-side

controlled oscillator, frequency limit circuit, soft-start, and

built-in protection functions. The high-side gate-drive

circuit

capability, which guarantees stable operation with

excellent noise immunity. The fast-recovery body diode

of the MOSFETs improves reliability against abnormal

operation conditions, while minimizing the effect of the

reverse recovery. Using the zero-voltage-switching (ZVS)

technique dramatically reduces the switching losses and

efficiency is significantly improved. The ZVS also

reduces the switching noise noticeably, which allows a

small-sized Electromagnetic Interference (EMI) filter.

The FSFR-series can be applied to various 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

without Heatsink

has

=350~400V)

gate-drive

for

200W

160W

140W

120W

100W

high-efficiency

common-mode

(1,2)

circuit,

Power with Heatsink

Maximum Output

half-bridge

noise

=350~400V)

accurate

450W

350W

300W

260W

200W

www.fairchildsemi.com

May 2008

cancellation

resonant

current

)

(1,2)

Related parts for FSFR2100_08

FSFR2100_08 Summary of contents

Page 1

FSFR-Series — for Half-Bridge Resonant Converters Features Variable Frequency Control with 50% Duty Cycle for Half-bridge Resonant Converter Topology High Efficiency through Zero Voltage Switching (ZVS) Internal SuperFET™s with Fast-Recovery Type Body Diode (t =120ns) for FSFR2100 and UniFETs rr ...

Page 2

Page 3

Pin Configuration Pin Definitions Pin # Name 1 V This is the drain of the high-side MOSFET, typically connected to the input DC link voltage. DL This pin is for enable/disable and protection. When the voltage of this pin is ...

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

Absolute Maximum Ratings Symbol Package Section Torque Recommended Screw Torque Notes: 3. Per MOSFET when both MOSFETs are conducting. 4. The maximum value of the recommended operating junction temperature is limited by thermal shutdown. Thermal Impedance T =25°C unless otherwise ...

Page 6

Electrical Characteristics T =25°C unless otherwise specified. A Symbol Parameter MOSFET Section Drain-to-Source BV DSS Breakdown Voltage R On-State Resistance DS(ON) Body Diode Reverse t (5) rr Recovery Time Supply Section I Offset Supply Leakage Current Quiescent ...

Page 7

Electrical Characteristics T =25°C unless otherwise specified. A Symbol Parameter Oscillator & Feedback Section V Control Pin Disable Threshold Voltage CONDIS V Control Pin Enable Threshold Voltage CONEN V V-I Converter Threshold Voltage RT f Output Oscillation Frequency OSC DC ...

Page 8

Typical Performance Characteristics These characteristic graphs are normalized at T 1.1 1.05 1 0.95 0.9 -50 - Temp ( Figure 4. Low-side MOSFET Duty Cycle vs. Temp. 1.1 1.05 1 0.95 0.9 -50 - Temp ...

Page 9

Typical Performance Characteristics These characteristic graphs are normalized at T 1.1 1.05 1 0.95 0.9 -50 - Temp ( Figure 10. OLP Delay Current vs. Temp. 1.1 1.05 1 0.95 0.9 -50 - Temp ...

Page 10

Functional Description 1. Basic Operation: FSFR-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 16. High side MOSFET gate drive ...

Page 11

R-C series network on the R in Figure 19. FSFR-series also has an internal soft-start for 3ms to reduce the current overshoot during the initial cycles, which adds 40kHz to the initial frequency of the external soft-start circuit, as ...

Page 12

Once Latch-Mode Protection: triggered, switching is terminated and the MOSFETs remain off. The latch is reset only when LV discharged below 5V. Figure 24. Protection Blocks Current Sensing Using Resistor: FSFR-series senses drain current as a negative voltage, as shown ...

Page 13

This protection is latch mode and reset when LV is pulled down below 5V. CC 5.3 Overload Protection (OLP): Overload is defined as the load current exceeding its normal level due to an unexpected abnormal event. In ...

Page 14

Typical Application Circuit (Half-bridge LLC Resonant Converter) Application FPS™ Device LCD TV FSFR2100 Features High efficiency ( >94% at 400V Reduced EMI noise through zero-voltage-switching (ZVS) Enhanced system reliability with various protection functions Brownout circuit V V =16~20V CC CC ...

Page 15

Typical Application Circuit Usually, LLC resonant converters require large leakage inductance value. To obtain a large leakage inductance, sectional winding method is used. Core: EER3542 (Ae=107 mm Bobbin: EER3542 (Horizontal) Pin (S → → ...

Page 16

Physical Dimensions SIPMODAA09RevA 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 ...

Page 17

Fairchild Semiconductor Corporation FSFR series • 1.0.3 17 www.fairchildsemi.com ...

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