FSQ0370RLA_12中文资料_数据手册_规格书

March 2012

FSQ0370RNA, FSQ0370RLA

Green Mode Fairchild Power Switch (FPS™)

Features

Description

The FSQ0370 consists of an integrated Current Mode

Pulse Width Modulator (PWM) and an avalanche rugged

700V SenseFET. It is specifically designed for high-

performance offline Switched Mode Power Supplies

(SMPS) with minimal external components. The

integrated PWM controller features include: a fixed-

frequency generating oscillator, Under-Voltage Lockout

(UVLO) protection, Leading-Edge Blanking (LEB), an

.

Internal Avalanche Rugged 700V SenseFET

Consumes Only 0.8W at 230V_AC& 0.5W Load with

Burst-Mode Operation

.

Precision Fixed Operating Frequency: 100kHz

Internal Startup Circuit and Built-in Soft-Start

Pulse-by-Pulse Current Limiting, Auto-Restart Mode

optimized gate turn-on

/ turn-off driver, Thermal

Over-Voltage Protection (OVP), Overload

Protection (OLP), Internal Thermal Shutdown

Function (TSD)

Shutdown (TSD) protection, and temperature-

compensated precision current sources for loop

compensation and fault protection circuitry.

.

Under-Voltage Lockout (UVLO)

Low Operating Current: 3mA

Adjustable Peak Current Limit

Compared to a discrete MOSFET and controller or RCC

switching converter solution, the FSQ0370 reduces total

component count, design size, and weight while

increasing efficiency, productivity, and system reliability.

These devices provide a basic platform that is well

suited for the design of cost-effective flyback converters,

such as in PC auxiliary power supplies.

Applications

.

Auxiliary Power Supply for PC and Server

SMPS for VCR, SVR, STB, DVD, and DVCD Player

Printer, Facsimile, and Scanner

Related Application Notes

.

AN-4134 — Design Guidelines for Off-line Forward

Converters Using Fairchild Power Switch (FPS™)

Adapter for Camcorder

AN-4137 — Design Guidelines for Offline Flyback

Converters Using Fairchild Power Switch (FPS™)

AN-4141 — Troubleshooting and Design Tips for

Fairchild Power Switch (FPS™) Flyback

Applications

.

AN-4147 — Design Guidelines for RCD Snubber of

Flyback Converters

Ordering Information

Part Number

Package

Marking Code

BV_DSS

f_OSC

R_DS(ON)(MAX)

FSQ0370RNA 8-Lead, Dual Inline Package (DIP)

FSQ0370RLA 8-Lead, LSOP

Q0370RA

700V

100KHz

4.75Ω

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

Application Circuit

AC

IN

DC

OUT

Vstr

PWM

Drain

Ipk

Vfb

Vcc

Source

Figure 1. Typical Flyback Application

230V_AC±15%⁽²⁾

Table 1. Output Power Table⁽¹⁾

Product

85-265V_AC

Adapter⁽³⁾

Open Frame⁽⁴⁾

Adapter⁽³⁾

Open Frame⁽⁴⁾

FSQ0370RNA

FSQ0370RLA

20W

27W

13W

19W

Notes:

1. The maximum output power can be limited by junction temperature.

2. 230V_ACor 100/115V_ACwith doubler.

3. Typical continuous power in a non-ventilated enclosed adapter with sufficient drain pattern as a heat sink at

50°C ambient.

4. Maximum practical continuous power in an open-frame design with sufficient drain pattern as a heat sink at

50°C ambient.

Internal Block Diagram

Figure 2. Functional Block Diagram

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

2

Pin Assignments

Figure 3. Pin Configuration (Top View)

Pin Definitions

Pin#

Name

Description

1

GND

SenseFET source terminal on the primary side and internal control ground.

Positive supply voltage input. Although connected to an auxiliary transformer winding,

current is supplied from pin 5 (Vstr) via an internal switch during startup (see Figure 2).

It is not until V_CCreaches the UVLO upper threshold (12V) that the internal startup switch

opens and device power is supplied via the auxiliary transformer winding.

2

3

4

Vcc

Vfb

Ipk

The feedback voltage pin is the non-inverting input to the PWM comparator. It has a

0.9mA current source connected internally, while a capacitor and optocoupler are typically

connected externally. A feedback voltage of 6V triggers overload protection (OLP). There

is a delay while charging external capacitor C_fbfrom 3V to 6V using an internal 5µA

current source. This delay prevents false triggering under transient conditions, but allows

the protection mechanism to operate in true overload conditions.

This pin adjusts the peak current limit of the SenseFET. The 0.9mA feedback current

source is diverted to the parallel combination of an internal 2.8kΩ resistor and any

external resistor to GND on this pin. This determines the peak current limit. If this pin is

tied to Vcc or left floating, the typical peak current limit is 1.1A.

This pin is connected to the rectified AC line voltage source. At startup, the internal switch

supplies internal bias and charges an external storage capacitor placed between the Vcc

pin and ground. Once V_CCreaches 12V, the internal switch is opened.

5

Vstr

The drain pins are designed to connect directly to the primary lead of the transformer and

are capable of switching a maximum of 700V. Minimizing the length of the trace

connecting these pins to the transformer decreases leakage inductance.

6, 7, 8

Drain

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

3

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 to stresses above the recommended operating conditions may affect device reliability.

The absolute maximum ratings are stress ratings only. T_A=25°C, unless otherwise specified.

Symbol

V_DRAIN

V_STR

I_DM

Parameter

Min.

700

Max.

Unit

V

Drain Pin Voltage

Vstr Pin Voltage

700

V

Drain Current Pulsed⁽⁵⁾

12

A

E_AS

Single Pulsed Avalanche Energy⁽⁶⁾

230

mJ

V

V_CC

Supply Voltage

20

V_FB

Feedback Voltage Range

Total Power Dissipation

-0.3

V_CC

V

P_D

1.5

Internally Limited

+85

W

°C

T_J

Recommended Operating Junction Temperature

Operating Ambient Temperature

Storage Temperature

-40

-55

T_A

T_STG

+150

Notes:

5. Non-repetitive rating: pulse-width limited by maximum junction temperature.

6. L=51mH, starting T_J=25°C.

Thermal Impedance

Symbol

θ_JA

Parameter

Junction-to-Ambient Thermal Resistance⁽⁷⁾

Junction-to-Case Thermal Resistance⁽⁸⁾

Junction-to-Top Thermal Resistance⁽⁹⁾

Value

80

Unit

θ_JC

20

°C/W

35

Ψ_JT

Notes:

7. Free-standing with no heat-sink, without copper clad.

8. Measured on the drain pin, close to the plastic interface.

9. Measured on the package top surface.

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

4

Electrical Characteristics

T_A=25°C unless otherwise specified.

Symbol

Parameter

Condition

Min. Typ. Max.

Unit

SenseFET Section⁽¹⁰⁾

V_DS=700V, V_GS=0V

50

I_DSS

Zero-Gate-Voltage Drain Current

µA

V_DS=560V, V_GS=0V,

T_C=125°C

200

Drain-Source On-State

Resistance⁽¹⁰⁾

R_DS(ON)

V_GS=10V, I_D=0.5A

4.00

4.75

Ω

C_ISS

C_OSS

C_RSS

t_d(on)

t_r

Input Capacitance

Output Capacitance

Reverse Transfer Capacitance

Turn-On Delay

V_GS=0V, V_DS=25V, f=1MHz

V_DD=350V, I_D=1A

315

47

pF

ns

9

11.2

34

Rise Time

V_DD=350V, I_D=1A

t_d(off)

t_f

Turn-Off Delay

V_DD=350V, I_D=1A

28.2

32

Fall Time

V_DD=350V, I_D=1A

Control Section

f_OSC

Δf_OSC

D_MAX

D_MIN

V_START

V_STOP

I_FB

Switching Frequency

Switching Frequency Variation⁽¹¹⁾

92

100

±5

60

0

108

±10

650

0

kHZ

%

-25°C < T_J< 85°C

Maximum Duty Cycle

Measured at 0.1 x V_DS

55

0

%

Minimum Duty Cycle

%

11

7

12

8

13

UVLO Threshold Voltage

V_FB=GND

V

9

Feedback Source Current

Internal Soft-Start Time⁽¹¹⁾

V_FB=GND

V_FB=4V

0.7

0.9

10

1.1

mA

ms

t_S/S

Burst-Mode Section

V_BURH

0.5

0.3

100

0.6

0.4

200

07

0.5

300

V

V_BURL

Burst-Mode Voltage

T_J=25°C

V_BUR(HYS)

mV

Protection Section

I_LIM

t_CLD

Peak Current Limit

Current Limit Delay⁽¹¹⁾

Thermal Shutdown Temperature⁽¹¹⁾

Shutdown Feedback Voltage

Over-Voltage Protection

di/dt=240mA/µs

0.97

1.10

500

140

6.0

1.23

A

ns

°C

V

T_SD

125

5.5

18

V_SD

6.5

V_OVP

I_DELAY

t_LEB

19

V

Shutdown Delay Current

Leading-Edge Blanking Time⁽¹¹⁾

V_FB=4V

3.5

200

5.0

µA

ns

Total Device Section

Operating Supply Current

(Control Part Only)

I_OP

V_CC=14V

1

3

5

mA

I_CH

Startup Charging Current

V_STRSupply Voltage

V_CC=0V

0.70

0.85

24

1.00

mA

V

V_STR

Notes:

10. Pulse test: Pulse width ≤ 300μs, duty ≤ 2%.

11. These parameters, although guaranteed, are not 100% tested in production.

www.fairchildsemi.com

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

5

Typical Performance Characteristics

Characteristic graphs are normalized at T_A=25°C.

Figure 4. Operating Frequency (f_OSC) vs. T_A

Figure 6. Maximum Duty Cycle (D_MAX) vs. T_A

Figure 8. Start Threshold Voltage (V_START) vs. T_A

Figure 5. Over-Voltage Protection (V_OVP) vs. T_A

Figure 7. Operating Supply Current (I_OP) vs. T_A

Figure 9. Stop Threshold Voltage(V_STOP) vs. T_A

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

6

Typical Performance Characteristics

Characteristic graphs are normalized at T_A=25°C.

Figure 10. Feedback Source Current (I_FB) vs. T_A

Figure 11. Startup Charging Current (I_CH) vs. T_A

Figure 12. Peak Current Limit (I_LIM) vs. T_A

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

7

Functional Description

1. Startup: In previous generations of Fairchild Power

Switches (FPS™), the Vstr pin required an external

resistor to the DC input voltage line. In this generation,

the startup resistor is replaced by an internal high-

voltage current source and a switch that shuts off 10ms

after the V_CCsupply voltage goes above 12V. The

source turns back on if V_CCdrops below 8V.

4. Protection Circuits: The FPS protective functions

include Overload Protection (OLP), Over-Voltage

Protection (OVP), Under-Voltage Lockout (UVLO), and

Thermal Shutdown (TSD). Because these protection

circuits are fully integrated inside the IC without external

components, reliability is improved without increasing

cost. Once a fault condition occurs, switching is

terminated and the SenseFET remains off. This causes

V_CCto fall. When V_CCreaches the UVLO stop voltage,

V_STOP(typically 8V); the protection is reset and the

internal high-voltage current source charges the V_CC

capacitor via the Vstr pin. When V_CCreaches the UVLO

start voltage, V_START(typically 12V); the FPS resumes

normal operation. In this manner, the auto-restart can

alternately enable and disable the switching of the

power SenseFET until the fault condition is eliminated.

V_IN,dc

I_STR

Vstr

V_CC<8V

UVLO on

V_CC

J-FET

I_CH

10ms after

V_CC

UVLO off

4.1 Overload Protection (OLP): Overload is defined as

the load current exceeding a pre-set level due to an

unexpected event. In this situation, the protection circuit

should be activated to protect the SMPS. However,

even when the SMPS is operating normally, the

Overload Protection (OLP) circuit can be activated

during the load transition. To avoid this undesired

operation, the OLP circuit is designed to be activated

after a specified time to determine whether it is a

transient situation or a true overload situation. In

conjunction with the Ipk current limit pin (if used), the

Current Mode feedback path would limit the current in

the SenseFET when the maximum PWM duty cycle is

attained. If the output consumes more than this

maximum power, the output voltage (V_O) decreases

below its nominal voltage. This reduces the current

through the optocoupler LED, which also reduces the

optocoupler transistor current, thus increasing the

feedback voltage (V_FB). If V_FBexceeds 3V, the feedback

input diode is blocked and the 5µA current source

(I_DELAY) starts to slowly charge C_fbup to V_CC. In this

condition, V_FBincreases until it reaches 6V, when the

switching operation is terminated (as shown in Figure

15). The shutdown delay s the time required to charge

C_fbfrom 3V to 6V with 5µA current source.

12V

≥

Figure 13. Startup Circuit

2. Feedback Control: The 700V FPS series employs

Current Mode control, as shown in Figure 14. An

optocoupler (such as the H11A817A) and shunt

regulator (such as the KA431) are typically used to

implement the feedback network. Comparing the

feedback voltage with the voltage across the R_sense

resistor of SenseFET, plus an offset voltage, makes it

possible to control the switching duty cycle. When the

regulator reference pin voltage exceeds the internal

reference voltage of 2.5V; the optocoupler LED current

increases, feedback voltage V_fbis pulled down, and the

duty cycle is reduced. This typically occurs when the

input voltage increases or the output load decreases.

V_CC

5µA

V_CC

0.9mA

Vfb

V_O

3

OSC

D1

D2

+

C_FB

2.5R

R

V_FB

V

FB,in

Gate

Driver

V_FB

-

431

Overload Protection

6V

3V

OLP

V_SD

Figure 14. Pulse Width Modulation (PWM) Circuit

3. Leading-Edge Blanking (LEB): When the internal

SenseFET is turned on; the primary-side capacitance

and secondary-side rectifier diode reverse recovery

t₁₂= C_FB(V(t )-V(t )) / I

DELAY

×

2

1

typically cause

a high current spike through the

SenseFET. Excessive voltage across the R_senseresistor

leads to incorrect feedback operation in the Current

Mode PWM control. To counter this effect, the FPS

employs a Leading-Edge Blanking (LEB) circuit to inhibit

the PWM comparator for a short time (t_LEB) after the

SenseFET is turned on.

t₁

t₂

t

−

V (t₂) V (t₁)

=

= μ = =

; I_DELAY5 A, V (t₁) 3V , V (t₂) 6V

t₁₂C_FB

I_DELAY

Figure 15. Overload Protection (OLP)

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

8

4.2 Thermal Shutdown (TSD): The SenseFET and the

control IC are integrated, making it easier for the control

IC to detect the temperature of the SenseFET. If the

temperature exceeds approximately 140°C, thermal

shutdown is activated.

6. Burst Operation: To minimize power dissipation in

Standby Mode, the FPS enters Burst Mode. Feedback

voltage decreases as the load decreases and, as shown

in Figure 17, the device automatically enters Burst Mode

when the feedback voltage drops below V_BURH(typically

600mV). Switching continues until the feedback voltage

drops below V_BURL(typically 400mV). At this point,

switching stops and the output voltage starts to drop at a

rate dependent on the standby current load. This causes

4.3 Over-Voltage Protection (OVP): In the event of a

malfunction in the secondary-side feedback circuit or an

open feedback loop caused by a soldering defect, the

current through the optocoupler transistor becomes

almost zero (refer to Figure 14). Then, V_FBclimbs up in

a similar manner to the overload situation, forcing the

preset maximum current to be supplied to the SMPS

until the overload protection is activated. Because

excess energy is provided to the output, the output

voltage may exceed the rated voltage before the

overload protection is activated, resulting in the

breakdown of the devices in the secondary side. To

prevent this situation, an Over-Voltage Protection (OVP)

circuit is employed. In general, V_CCis proportional to the

output voltage and the FPS uses V_CCinstead of directly

monitoring the output voltage. If V_CCexceeds 19V, the

OVP circuit is activated, terminating switching. To avoid

undesired activation of OVP during normal operation,

the feedback voltage to rise. Once it passes V_BURH

,

switching resumes. The feedback voltage then falls and

the process is repeated. Burst Mode alternately enables

and disables switching of the SenseFET and reduces

switching loss in Standby Mode.

Burst

Operation

Normal

Operation

V_FB

V_BURH

V_BURL

Current

Waveform

V_CCshould be designed to be below 19V.

Switching

OFF

Switching

OFF

5. Soft-Start: The FPS internal soft-start circuit slowly

increases the SenseFET current after startup, as shown

in Figure 16. The typical soft-start time is 10ms, where

progressive increments of the SenseFET current are

allowed during the startup phase. The pulse width to the

power switching device is progressively increased to

Figure 17. Burst Operation Function

7. Adjusting Peak Current Limit: As shown in Figure

18, a combined 2.8kΩ internal resistance is connected

to the non-inverting lead on the PWM comparator. An

external resistance of R_xon the current limit pin forms a

parallel resistance with the 2.8kΩ when the internal

diodes are biased by the main current source of 900µA.

establish

the

correct

working

conditions

for

transformers, inductors, and capacitors. The voltage on

the output capacitors is progressively increased to

smoothly establish the required output voltage. This

helps to prevent transformer saturation and reduces the

stress on the secondary diode during startup.

V_CC

PWM

Comparator

5µA

900µA

I_DELAY

I_FB

Vfb

Ω

2k

#6,7,8

5V

3

4

DRAIN

0.8kΩ

Ip

SenseFET

Current Sense

Rx

#1

Figure 18. Peak Current Limit Adjustment

GND

For example, FSQ0370 has a typical SenseFET peak

current limit (I_LIM) of 1.1A. I_LIMcan be adjusted to 0.6A by

inserting R_xbetween the Ipk pin and the ground. The

value of the R_xcan be estimated by:

I_LIM

R

sense

(1)

(2)

1.1A: 0.6A = 2.8kΩ: XkΩ,

X = R_x|| 2.8kΩ.

Figure 16. Soft-Start Function

where X represents the resistance of the parallel network.

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

9

Application Information

Reducing Audible Noise

Switching mode power converters have electronic and

magnetic components that generate audible noises

when the operating frequency is in the range of

20~20,000Hz. Even though they operate above 20KHz,

they can crease noise, depending on the load condition.

Three methods of reducing noise are discussed below:

Glue or Varnish

The most common method of reducing audible noise

includes using glue or varnish to tighten magnetic

components. The motion of core, bobbin, and coil as

well as the chattering or magnetostriction of core can

cause the transformer to produce audible noise. The

use of rigid glue and varnish reduces the transformer

noise. Glue or varnish can also crack the core because

sudden changes in the ambient temperature cause the

core and the glue to expand or shrink in a different ratio

according to the temperature.

Figure 19. Equal Loudness Curves

Ceramic Capacitor

Using a film capacitor instead of a ceramic capacitor as

a snubber capacitor is another noise reduction solution.

Some dielectric materials show a piezoelectric effect,

depending on the electric field intensity. A snubber

capacitor can become one of the most significant

sources of audible noise. Another possibility is to use a

Zener clamp circuit instead of an RCD snubber for

higher efficiency as well as lower audible noise.

Figure 20. Typical Feedback Network of FPS™

Adjusting Sound Frequency

Moving the fundamental frequency of noise out of

2~4KHz range is a third method. Generally, humans are

more sensitive to noise in the range of 2~4KHz. When

the fundamental frequency of noise is located in this

range, the noise sounds louder though the noise

intensity level is identical. Refer to Figure 19.

Reference Materials

AN-4134 — Design Guidelines for Offline Forward

Converters Using Fairchild Power Switch (FPS™)

AN-4137 — Design Guidelines for Offline Flyback

Converters Using Fairchild Power Switch (FPS™)

If Burst Mode is suspected as a source of noise, this

method may be helpful. If the frequency of Burst Mode

operation lies in the range of 2~4KHz, adjusting the

feedback loop can shift the burst operation frequency.

AN-4140 — Transformer Design Consideration for

Offline Flyback Converters Using Fairchild Power Switch

(FPS™)

To reduce burst operation frequency, increase

a

AN-4141 — Troubleshooting and Design Tips for

Fairchild Power Switch (FPS™) Flyback Applications

feedback gain capacitor (C_F), optocoupler supply

resistor (R_D), and feedback capacitor (C_B) and decrease

a feedback gain resistor (R_F) as shown in Figure 20.

AN-4147 — Design Guidelines for RCD Snubber of

Flyback Converters

AN-4148 — Audible Noise Reduction Techniques for

FPS Applications

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

10

Typical Application Circuit

Application

Output Power

Input Voltage

Output Voltage (Maximum Current)

PC Auxiliary Power Supply

(Using FSQ0270RNA)

Universal Input

15W

5V (3A)

(85-264V_AC

)

Features

Key Design Notes

.

High efficiency (>78% at 115V_ACand 230V_ACinput)

.

The delay for overload protection is designed to be

about 30ms with C8 of 47nF. If faster/slower

triggering of OLP is required, C8 can be changed to

a smaller or larger value (eg. 100nF for 60ms).

Low Standby Mode power consumption (<0.8W at

230V_ACinput and 0.5W load)

.

Enhanced system reliability through various

protection functions

.

ZP1, DL1, RL1, RL2, RL3, RL4, RL5, RL7, QL1,

QL2, and CL9 build a line Under-Voltage Lockout

block (UVLO). The Zener voltage of ZP1

determines the input voltage that turns the FPS on.

RL5 and DL1 provide a reference voltage from V_CC

If the input voltage divided by RL1, RL2, and RL4 is

lower than the Zener voltage of DL1; QL1, and QL2

turn on and pull V_fbdown to ground.

.

Low EMI through frequency modulation

Internal soft-start: 10ms

.

Line UVLO function can be achieved using external

components

.

An evaluation board and corresponding test report

can be provided. Contact a Fairchild representative.

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

11

Schematic

Figure 21. Demonstration Circuit

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

12

Transformer

EE2229

1

9, 10

2

3

4

5

Np/2

6, 7

N_5V

N_a

Figure 22. Transformer Schematic Diagram

Table 2. Winding Specification

No.

Wire

0.3^φx 1

Turns

Winding Method

Pin (s→f)

3 → 2

N_p/2

72

Solenoid Winding

Insulation: Polyester Tape t = 0.025mm, 1-Layer

N_a

0.25^φx 2

22

8

Solenoid Winding

4 → 5

Insulation: Polyester Tape t = 0.0250mm, 2-Layer

N_5V

6, 7 → 9, 10

0.65^φx 2

Insulation: Polyester Tape t = 0.025mm, 2-Layer

N_p/2

0.3^φx 1

72

2 → 1

Insulation: Polyester Tape t = 0.025mm, 2-Layer

Table 3. Electrical Characteristics

Specification

1.20mH ± 5%

Remarks

100kHz, 1V

Inductance

Leakage

1 - 3

<30µH Maximum

Short All Other Pins

Core & Bobbin

. Core: EER2229 ( PL-7, 37.2mm²)

. Bobbin: BE2229

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

13

Table 4. Demonstration Board Part List

Part Number

Value

47nF

Quantity

Description (Manufacturer)

C6, C8

C1

2

1

Ceramic Capacitor

2.2nF (1KV)

1nF (200V)

1.5nF (50V)

AC Ceramic Capacitor(X1 & Y1)

Mylar Capacitor

C10

CS1

SMD Ceramic Capacitor

Low Impedance Electrolytic Capacitor KMX series (Samyoung

Electronics)

C2, C3

22µF (400V)

2

C4, C9

C5

1000µF (16V)

470µF (10V)

47µF (25V)

10µF (50V)

330µH

1µH

2

1

4

1

2

1

Low ESR Electrolytic Capacitor NXC series (Samyoung Electronics)

C7

General Electrolytic Capacitor

Inductor

CL9

L1

L2

Inductor

R6

2.4 (1W)

0

Fusible Resistor

Jumper

J1, J2, J4, L3

R2

4.7kΩ

Resistor

R3

560Ω

Resistor

R4

100Ω

Resistor

R5

1.25kΩ

1.2kΩ

Resistor

R11

R9

Resistor

10kΩ

Resistor

R10

R14

RL3

RL1, RL2

RL4

RL5

RL7

RS1

ZR1

U1

2Ω

Resistor

30Ω

Resistor

1kΩ

Resistor

1MΩ

Resistor

120kΩ

30kΩ

Resistor

40kΩ

Resistor

9Ω

Resistor

80Ω

SMD Resistor

IC (Fairchild Semiconductor)

FOD817A

TL431

FSQ0270RNA

2N2907

2N2222

U2

U3

QL1

QL2

D2, D3, D4, D5,

D6, DS1

1N4007

6

Diode (Fairchild Semiconductor)

D1

ZD1

DL1

ZP1

ZDS1

SB540

1N4745

1

Schottky Diode (Fairchild Semiconductor)

Zener Diode (Fairchild Semiconductor)

TVS (Fairchild Semiconductor)

1N5233

82V (1W)

P6KE180A

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

14

Layout

Figure 23. Top Image of PCB

Figure 24. Bottom of Image of PCB

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

15

Package Dimensions

.400 10.15

.373 9.46

A

[

]

.036 [0.9 TYP]

(.092) [Ø2.337]

PIN #1

(.032) [R0.813]

PIN #1

.250±.005 [6.35±0.13]

B

TOP VIEW

OPTION 1

TOP VIEW

OPTION 2

.070 1.78

.310±.010 [7.87±0.25]

.045

[ ]

1.14

.130±.005 [3.3±0.13]

.210 MAX

[5.33]

7° TYP

C

.015 MIN

[0.38]

.140 3.55

_.125[_3.17]

.021 0.53

.015 0.37

.300

[7.62]

[

]

.001[.025]

C

.100

[2.54]

.430 MAX

[10.92]

.060 MAX

[1.52]

NOTES:

A. CONFORMS TO JEDEC REGISTRATION MS-001,

VARIATIONS BA

B. CONTROLING DIMENSIONS ARE IN INCHES

REFERENCE DIMENSIONS ARE IN MILLIMETERS

+.005

-.000

+0.127

-0.000

.010

0.254

[

]

C. DOES NOT INCLUDE MOLD FLASH OR PROTRUSIONS.

MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED

.010 INCHES OR 0.25MM.

D. DOES NOT INCLUDE DAMBAR PROTRUSIONS.

DAMBAR PROTRUSIONS SHALL NOT EXCEED

.010 INCHES OR 0.25MM.

E. DIMENSIONING AND TOLERANCING

PER ASME Y14.5M-1994.

N08EREVG

Figure 25. 8-Lead, Dual Inline Package (DIP)

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 obtain the most recent revision.

Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products.

Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/packaging/.

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

16

Package Dimensions (Continued)

MKT-MLSOP08ArevA

Figure 26. 8-Lead, MLSOP

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 obtain the most recent revision.

Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products.

Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/packaging/.

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

17

FSQ0370RNA / FSQ0370RLA • Rev. 1.0.2

www.fairchildsemi.com

18

型号	制造商	描述	价格	文档
FSQ0370RNA	FAIRCHILD	Green Mode Fairchild Power Switch (FPS⑩)	获取价格
FSQ0370RNA	ONSEMI	700V 集成电源开关，100kHz，用于 19W 离线反激转换器	获取价格
FSQ0370RNA_12	FAIRCHILD	Green Mode Fairchild Power Switch (FPSâ¢)	获取价格
FSQ0465RB	FAIRCHILD	Green-Mode Fairchild Power Switch (FPS) for Quasi-Resonant Operation - Low EMI and High Efficiency	获取价格
FSQ0465RBLDTU	FAIRCHILD	Green-Mode Fairchild Power Switch (FPS) for Quasi-Resonant Operation - Low EMI and High Efficiency	获取价格
FSQ0465RBWDTU	FAIRCHILD	Green-Mode Fairchild Power Switch (FPS) for Quasi-Resonant Operation - Low EMI and High Efficiency	获取价格
FSQ0465RS	FAIRCHILD	Green-Mode Fairchild Power Switch (FPS) for Quasi-Resonant Operation - Low EMI and High Efficiency	获取价格
FSQ0465RSLDTU	FAIRCHILD	Green-Mode Fairchild Power Switch (FPS) for Quasi-Resonant Operation - Low EMI and High Efficiency	获取价格
FSQ0465RSLDTU	ONSEMI	具有准谐振运行功能的 650V 集成电源开关，适用于 48W 离线反激转换器	获取价格
FSQ0465RSWDTU	FAIRCHILD	Green-Mode Fairchild Power Switch (FPS) for Quasi-Resonant Operation - Low EMI and High Efficiency	获取价格

FSQ0370RLA_12

FSQ0370RLA_12 概述

FSQ0370RLA_12 数据手册

FSQ0370RLA_12 相关器件

FSQ0370RLA_12 相关文章

热门型号