Fairchild FSEZ1216 service manual

April 2009

FSEZ1216 — Primary-Side-Regulation PW M Integrated Power MOSFET

FSEZ1216 — Primary-Side-Regulation PWM Integrated Power MOSFET

Features

 Constant-Voltage (CV) and Constant-Current (CC)

Control without Secondary-Feedback Circuitry

 Green Mode: Frequency Reduction at Light-Load  Fixed PWM Frequency at 42kHz with Frequency

Hopping to Reduce EMI

 Cable Voltage Drop Compensation in CV Mode  Low Startup Current: 10μA  Low Operating Current: 3.5mA  Peak-Current-Mode Control in CV Mode  Cycle-by-Cycle Current Limiting  V  V

Over-Voltage Protection with Auto-Restart

DD

Under-Voltage Lockout (UVLO)

DD

 Gate Output Maximum Voltage Clamped at 18V

 Fixed Over-Temperature Protection with Latch

 DIP-8 Package Available

Applications

Battery Chargers for Cellular Phones, Cordless



Phones, PDA, Digital Cameras, Power Tools

Description

The primary-side PWM integrated Power MOSFET, FSEZ1216, significantly simplifies power supply design that requires CV and CC regulation capabilities. FSEZ1216 controls the output voltage and current precisely only with the information in the primary side of the power supply, not only removing the output current sensing loss, but also eliminating all secondary feedback circuitry.

The green-mode function with a low startup current (10µA) maximizes the light load efficiency so the power supply can meet stringent standby power regulations.

Compared with conventional secondary side regulation approach, the FSEZ1216 can reduce total cost, component count, size, and weight, while simultaneously increasing efficiency, productivity, and system reliability.

A typical output CV/CC characteristic envelope is shown in Figure 1.

 Replaces Linear Transformer and RCC SMPS  Offline High Brightness (HB) LED Drivers

Figure 1. Typical Output V-I Characteristic

Ordering Information

Operating

Part Number

FSEZ1216NY -40°C to +105°C 600V

For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.

Temperature

Range

MOSFET

BV

DSS

MOSFET

R

DS.ON

9.3Ω

(Typical)

Eco

Status

Green 8-Lead, Dual Inline Package (DIP-8) Tube

Package

Packing

Method

Application Diagram

Bridge

Rectifier

Diode

FSEZ1216 — Primary-Side-Regulation PWM Integrated Power MOSFET

R

C

SN2

V

O

R

D

DD

SN1CSN1

D

SN

N

P

V

DL

+

R

C

DL

-

START

D

R

N

S

C

O

I

O

ACLine

R

CS

C

COMR

R

COMR

C

COMI

R

COMI

Internal Block Diagram

VDD

6

GND

+

-

16V/5V

OSC with

Frequency Hopping

Green Mode

Controller

7

Internal Bias

C

FSEZ1216

CS

1

2

COMR

COMI

3

COMV

4 5

C

COMV

R

COMV

DRAIN

GND

VDD

VS

8

7

6

Figure 2. Typical Application

+

OVP

-

28V

Brownout

OTP

-

+

PWM

Comparator

PWM

Comparator

-

+

PWM

Slope Compensation

+

-

EA_V

DD

C

Auto

Restart

Prote ction

Latch

Prote ction

SRQ

+

-

EA_I

Compensation

S

Q

1.3V

-

+

Cable Drop

N

A

R

S1

R

S2

Soft-Driver

2.5V

Temperature

Compensation

Leading-Edge

Blanking

I

O

Estima tor

t

DIS

Detector

V

O

Estima tor

Brownout Protection

8

1

5

DRAIN

CS

VS

3

COMI

4

COMV

2

COMR

Figure 3. Functional Block Diagram

Marking Information

Pin Configuration

Figure 4. Top Mark

FSEZ1216 — Primary-Side-Regulation PWM Integrated Power MOSFET

F- Fairchild Logo

Z- Plant Code X- 1-Digit Year Code Y- 1-Digit Week Code TT- 2-Digits Die Run Code T- Package Type (N=DIP) P- Z: Pb Free, Y: Green Package M- Manufacture Flow Code

Pin Definitions

Pin # Name Description

1 CS

2 COMR

3 COMI

4 COMV

5 VS

6 VDD

7 GND

8 DRAIN

Current Sense. This pin connects a current-sense resistor to sense the MOSFET current for

peak-current-mode control in CV mode and provides for output-current regulation in CC mode.

Cable Compensation. This pin connects a capacitor between COMR and GND for

compensation voltage drop due to output cable loss in CV mode.

Constant Current Loop Compensation. This pin connects a capacitor and a resistor between

COMI and GND for compensation current loop gain.

Constant Voltage Loop Compensation. This pin connects a capacitor and a resistor between

COMV and GND for compensation voltage loop gain.

Voltage Sense. This pin detects the output voltage information and discharge time based on

voltage of auxiliary winding. This pin connects two divider resistors and one capacitor.

Power Supply. The power supply pin for the IC operating current and MOSFET driving current.

This pin is connects to an external VDD capacitor (typically 10μF). The threshold voltages for

startup and turn-off are 16V and 5V, respectively.

Ground. Drain. This pin is the high-voltage power MOSFET drain.

CS

COMR

COMI

COMV

DRAIN

GND

VDD

VS

Figure 5. Pin Configuration

FSEZ1216 — Primary-Side-Regulation PWM Integrated Power MOSFET

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.

Symbol Parameter Min. Max. Unit

V

DC Supply Voltage

VDD

VVS VS Pin Input Voltage -0.3 7.0 V

VCS CS Pin Input Voltage -0.3 7.0 V

V

Voltage Error Amplifier Output Voltage -0.3 7.0 V

COMV

V

Voltage Error Amplifier Output Voltage -0.3 7.0 V

COMI

VDS Drain-Source Voltage 600 V

ID Continuous Drain Current

IDM Pulsed Drain Current 4 A

EAS Single Pulse Avalanche Energy 33 mJ

IAR Avalanche Current 1 A

PD Power Dissipation (TA＜50°C) 800 mW

Θ

JA

ΘJC

Thermal Resistance Junction-to-Air 113 °C/W

Thermal Resistance Junction-to-Case 67 °C/W

TJ Operating Junction Temperature +150 °C

T

Storage Temperature Range -55 +150 °C

STG

TL Lead Temperature (Wave Soldering or IR, 10 Seconds) +260 °C

Electrostatic Discharge Capability, Human Body Model,

ESD

JEDEC: JESD22-A114

Electrostatic Discharge Capability, Charged Device Model, JEDEC: JESD22-C101

Note:

1. All voltage values, except differential voltages, are given with respect to GND pin.

(1)

30 V

TC=25°C 1.0

=100°C 0.6

T

C

A

2.5 KV

1250 V

Recommended Operating Conditions

The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings.

Symbol Parameter Conditions Min. Typ. Max. Unit

TA Operating Ambient Temperature -40 +105 °C

Electrical Characteristics

VDD=15V and TA=25°C unless otherwise specified.

Symbol Parameter Conditions Min. Typ. Max. Units

VDD Section

VOP Continuously Operating Voltage 25 V

V

Turn-On Threshold Voltage 15 16 17 V

DD-ON

V

Turn-Off Threshold Voltage 4.5 5.0 5.5 V

DD-OFF

I

Startup Current 0< VDD < V

DD-ST

=20V, fS=f

V

I

Operating Current

DD-OP

I

DD-GREEN

V

DD-OVP

t

D-VDDOVP

Green Mode Operating Supply Current

Over-Voltage Protection

V

DD

Level

Over-Voltage Protection

V

DD

Debounce Time

DD

V

=3V, CL=1nF

CS

=20V, VVS=2.7V,

V

DD

f

S=fOSC-N-MIN

V

=0V

COMV

V

=3V, VVS=2.3V,

CS

fs= f

, VVS=2.3V

OSC

Oscillator Section

f

Frequency

OSC

t

Frequency Hopping Period

FHR

f

OSC-N-MIN

f

OSC-CM-MIN

Minimum Frequency at No Load VVS=2.7V, V

Minimum Frequency at CCM VVS=2.3V, VCS=0.5V 20 KHz

fDV

fDT

Frequency Variation vs. V Deviation

Frequency Variation vs. Temperature Deviation

Center Frequency

Frequency Hopping Range

DD

T

=25°C

A

=25°C

T

A

T

=25°C

A

V

=10V to 25V 5 %

DD

TA=-40°C to +85°C 15 %

Voltage-Sense Section

I

VS-UVP

Itc IC Compensation Bias Current 9.5 μA

V

BIAS-COMV

Sink Current for Brownout Protection

Adaptive Bias Voltage Dominated by V

COMV

RVS=20KΩ 180 μA

=0V, TA=25°C, RVS=20KΩ 1.4 V

V

COMV

Current-Sense Section

tPD

t

MIN-N

t

MINCC

D

SAW

VTH

Propagation Delay to GATE Output

100 200 ns

Minimum On Time at No Load VVS=-0.8V, RS=2KΩ, V

Minimum On Time in CC Mode VVS=0V, V

Duty Cycle of SAW Limiter

Threshold Voltage for Current Limit

1.3 V

-0.16V 0 1.6 10.0 μA

DD-ON

, VVS=2V,

OSC

, VCS=0V, CL=1nF,

3.5 5.0 mA

1 2 mA

27 28 29 V

100 250 400 μs

39 42 45

±1.8 ±2.6 ±3.6

3 ms

=0V 550 Hz

COMV

=1V 1100 ns

COMV

=2V 400 ns

COMV

40 %

Continued on following page…

FSEZ1216 — Primary-Side-Regulation PWM Integrated Power MOSFET

KHz

Fairchild FSEZ1216 service manual

Specifications and Main Features

Frequently Asked Questions

User Manual