Fairchild FAN3216, FAN3217 service manual

FAN3216 / FAN3217 Dual-2A, High-Speed, Low-Side Gate Drivers

Features

 Industry-Standard Pinouts  4.5 to 18V Operating Range  3A Peak Sink/Source at V  2.4A Sink / 1.6A Source at V

DD

= 12V

= 6V

OUT

 TTL Input Thresholds  Two Versions of Dual Independent Drivers:

- Dual Inverting (FAN3216)

- Dual Non-Inverting (FAN3217)

 Internal Resistors Turn Driver Off If No Inputs  MillerDrive™ Technology  12ns / 9ns Typical Rise/Fall Times with 1nF Load  Typical Propagation Delay Under 20ns Matched

within 1ns to the Other Channel

 Double Current Capability by Paralleling Channels  Standard SOIC-8 Package  Rated from –40°C to +125°C Ambient

Applications

 Switch-Mode Power Supplies  High-Efficiency MOSFET Switching  Synchronous Rectifier Circuits  DC-to-DC Converters  Motor Control

Description

The FAN3216 and FAN3217 dual 2A gate drivers are designed to drive N-channel enhancement-mode MOSFETs in low-side switching applications by providing high peak current pulses during the short switching intervals. They are both available with TTL input thresholds. Internal circuitry provides an undervoltage lockout function by holding the output LOW until the supply voltage is within the operating range. In addition, the drivers feature matched internal propagation delays between A and B channels for applications requiring dual gate drives with critical timing, such as synchronous rectifiers. This also enables connecting two drivers in parallel to effectively double the current capability driving a single MOSFET.

The FAN3216/17 drivers incorporate MillerDrive™ architecture for the final output stage. This bipolarMOSFET combination provides high current during the Miller plateau stage of the MOSFET turn-on / turn-off process to minimize switching loss, while providing railto-rail voltage swing and reverse current capability.

The FAN3216 offers two inverting drivers and the FAN3217 offers two non-inverting drivers. Both are offered in a standard 8-pin SOIC package.

FAN3216 FAN3217

Figure 1. Pin Configurations

FAN3216 / FAN3217 — Dual-2A, High-Speed, Low-Side Gate Drivers

July 2012

Ordering Information

Part Number Logic

FAN3216TMX Dual Inverting Channels TTL SOIC-8

FAN3217TMX Dual Non-Inverting Channels TTL SOIC-8

Input

Threshold

Package

Packing

Method

Tape & Reel

Quantity per Reel

2,500

Package Outlines

FAN3216 / FAN3217 — Dual-2A, High-Speed, Low-Side Gate Drivers

Figure 2. SOIC-8 (Top View)

Thermal Characteristics

Package

8-Pin Small Outline Integrated Circuit (SOIC)

Notes:

1. Estimates derived from thermal simulation; actual values depend on the application.

2. Theta_JL ( thermal pad) that are typically soldered to a PCB.

3. Theta_JT ( held at a uniform temperature by a top-side heatsink.

4. Theta_JA (Θ The value given is for natural convection with no heatsink using a 2S2P board, as specified in JEDEC standards JESD51-2, JESD51-5, and JESD51-7, as appropriate.

5. Psi_JB ( application circuit board reference point for the thermal environment defined in Note 4. For the SOIC-8 package, the board reference is defined as the PCB copper adjacent to pin 6.

6. Psi_JT ( the center of the top of the package for the thermal environment defined in Note 4.

Θ

): Thermal resistance between the semiconductor junction and the bottom surface of all the leads (including any

JL

Θ

): Thermal resistance between the semiconductor junction and the top surface of the package, assuming it is

JT

): Thermal resistance between junction and ambient, dependent on the PCB design, heat sinking, and airflow.

JA

Ψ

): Thermal characterization parameter providing correlation between semiconductor junction temperature and an

JB

Ψ

): Thermal characterization parameter providing correlation between the semiconductor junction temperature and

JT

(1)

(2)

Θ

JL

40 31 89 43 3.0 °C/W

Θ

(3)

JT

Θ

JA

(4)

Ψ

JB

(5)

Ψ

JT

(6)

Units

Pin Configurations

(7)

FAN3216 / FAN3217 — Dual-2A, High-Speed, Low-Side Gate Drivers

FAN3216 FAN3217

Figure 3. Pin Configurations (Repeated)

Pin Definitions

Pin Name Pin Description

1

2

3

2

4

7

5

(FAN3216)

5

(FAN3217)

6

7

(FAN3216)

7

(FAN3217)

8

NC

INA

GND

INA

INB

OUTA

OUTB

VDD

OUTA

NC

No Connect. This pin can be grounded or left floating. Input to Channel A. Ground. Common ground reference for input and output circuits. Input to Channel A. Input to Channel B. Gate Drive Output A: Held LOW unless required input(s) are present and V

UVLO threshold.

Gate Drive Output B (inverted from the input): Held LOW unless required input is

present and V

is above UVLO threshold.

DD

Gate Drive Output B: Held LOW unless required input(s) are present and V

UVLO threshold.

Supply Voltage. Provides power to the IC. Gate Drive Output A (inverted from the input): Held LOW unless required input is

present and V

is above UVLO threshold.

DD

Gate Drive Output A: Held LOW unless required input(s) are present and V

UVLO threshold.

No Connect. This pin can be grounded or left floating.

is above

DD

is above

DD

is above

DD

Output Logic

FAN3216 (x=A or B) FAN3217 (x=A or B)

INx

OUTx

0 0 0

1

0 1 0

1

0 1 1

INx OUTx

0

Note:

7. Default input signal if no external connection is made.

Block Diagrams

FAN3216 / FAN3217 — Dual-2A, High-Speed, Low-Side Gate Drivers

Figure 4. FAN3216 Block Diagram

Figure 5. FAN3217 Block Diagram

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

VDD VDD to PGND -0.3 20.0 V

VIN INA, INA+, INA–, INB, INB+ and INB– to GND GND - 0.3 VDD + 0.3 V

V

OUTA and OUTB to GND GND - 0.3 VDD + 0.3 V

OUT

TL Lead Soldering Temperature (10 Seconds) +260 ºC

TJ Junction Temperature -55 +150 ºC

T

Storage Temperature -65 +150 ºC

STG

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.

FAN3216 / FAN3217 — Dual-2A, High-Speed, Low-Side Gate Drivers

Symbol Parameter Min. Max. Unit

VDD Supply Voltage Range 4.5 18.0 V

VIN Input Voltage INA, INA+, INA–, INB, INB+ and INB– 0 VDD V

TA Operating Ambient Temperature -40 +125 ºC

FAN3216 / FAN3217 — Dual-2A, High-Speed, Low-Side Gate Drivers

Electrical Characteristics

Unless otherwise noted, VDD=12V, TJ=-40°C to +125°C. Currents are defined as positive into the device and negative out of the device.

Symbol Parameter Conditions Min. Typ. Max. Unit

Supply

VDD Operating Range 4.5 18.0 V

IDD Supply Current, Inputs Not Connected 0.75 1.20 mA

VON Turn-On Voltage INA = VDD, INB = 0V 3.45 3.90 4.35 V

V

Turn-Off Voltage INA = VDD, INB = 0V 3.25 3.70 4.15 V

OFF

Inputs

V

INx Logic Low Threshold 0.8 1.2 V

IL_T

V

INx Logic High Threshold 1.6 2.0 V

IH_T

I

Non-Inverting Input IN from 0 to VDD -1.5 175.0 µA

IN+

I

Inverting Input IN from 0 to VDD -175.0 1.5 µA

IN-

V

TTL Logic Hysteresis Voltage 0.2 0.4 0.8 V

HYS_T

Output

I

OUT Current, Mid-Voltage, Sinking

SINK

I

OUT Current, Mid-Voltage, Sourcing

SOURCE

I

OUT Current, Peak, Sinking

PK_SINK

I

PK_SOURCE

OUT Current, Peak, Sourcing

t

Output Rise Time

RISE

t

Output Fall Time

FALL

(9)

C

(8)

C

(8)

C

tD1, tD2 Output Propagation Delay, TTL Inputs

Propagation Matching Between Channels

I

Output Reverse Current Withstand

RVS

(8)

500 mA

Notes:

8. Not tested in production.

9. See Timing Diagrams of Figure 6 and F igure 7.

OUTx at V C

LOAD

OUTx at V C

LOAD

(9)

0 - 5VIN, 1V/ns Slew Rate 10 19 34 ns

INA=INB, OUTA and OUTB at 50% Point

/2,

DD

=0.22µF, f=1kHz

/2,

DD

=0.1µF, f=1kHz

2.4 A

-1.6 A

=0.1µF, f=1kHz 3 A

=0.1µF, f=1kHz -3 A

=1000pF 12 22 ns

=1000pF 9 17 ns

1 2 ns

Figure 6. Non-Inverting Timing Diagram Figure 7. Inverting Timing Diagram

Fairchild FAN3216, FAN3217 service manual

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