IRS20124SPBF International Rectifier, IRS20124SPBF Datasheet

Page 1

D igital Audio Driver with Discrete Deadtime and Protection Features 200 V high voltage ratings deliver up to 1000 W output power in Class D audio amplifier applications Integrated deadtime generation and bi-directional over-current sensing simplify design Programmable compensated preset ...

Page 2

Description The IRS20124 is a high voltage, high speed power MOSFET driver with internal deadtime and shutdown functions specially designed for Class D audio amplifier applications. The internal dead time generation block provides accurate gate switch timing and enables tight ...

Page 3

Recommended Operating Conditions For proper operation, the device should be used within the recommended conditions. The Vs and COM offset ratings are tested with all supplies biased differential. Symbol V High-side floating supply absolute voltage B ...

Page 4

Static Electrical Characteristics and °C unless otherwise specified. BIAS Symbol Definition V Logic high input voltage IH V Logic low input voltage IL V High level ...

Page 5

Lead Definitions Symbol Description VCC Low-side logic supply voltage VB High-side floating supply HO High-side output VS High-side floating supply return IN Logic input for high-side and low-side gate driver outputs (HO and LO), in phase with HO DT/SD Input ...

Page 6

Block Diagram DEAD TIME IN DT/SD www.irf.com UV DETECT LEVEL SHIFTER SD CURRENT SENSING UV DETECT DELAY IRS20124S(PbF Vcc LO COM 6 ...

Page 7

IN t off( Figure 1. Switching Time Waveform Definitions DT/ Figure 2. Shutdown Waveform Definitions www.irf.com 50% t on(L) t off(L) t on(H) 90% HO IRS20124S(PbF) 10% DT ...

Page 8

VS V soct COM HIGH OC COM Figure 3. OC Input FilterTime Definitions OC Vsoc+ VS COM Vsoc- OC www.irf.com LO COM VS V Soc+ COM V Soc- OC Figure 4. OC Waveform Definitions IN NC OCSET1 NC ...

Page 9

Temperature ( Figure 6A. Turn-On Tim e vs. Tem perature 0 150 0 120 Max Typ -50 - ...

Page 10

Temperature ( Fiure 8A. Turn-On Rise Tim e vs.Tem perature -50 - Temperature ( Figure 9A. Turn-Off Fall Tim e ...

Page 11

Min -50 - Temperature ( o Figure 10A. Logic "1" Input Voltage vs. Tem perature Max -50 - Temperatre ( o C) Figure 11A. ...

Page 12

Max -50 - Temperature ( Figure 12A. High Level Output vs. Temperature 0.25 0.20 0.15 Max. 0.10 0.05 0.00 -50 - Temperature ( Figure 13A. Low Level Output ...

Page 13

Max -50 - Temperature ( Figure 14A. Offset Supply Leakage Current vs. Temperature V 2.5 2.0 1.5 1.0 0.5 0.0 -50 - Temperature ( Figure 15A. V ...

Page 14

Max -50 - Temperature ( Figure 16A. V Supply Current CC vs. Temperature -50 - Temperature ( Figure 17A. Logic "1" Input ...

Page 15

Max -50 - Temperature (°C) Figure 18A. Logic "0" Input Bias Current vs. Temperature 11 10 Max. 9 Typ. 8 Min -50 - Temperature ( ...

Page 16

Temperature ( Figure 21. V Undervoltage Threshold (+) BS vs. Tem perature 1.5 1.3 1.1 0.9 Typ. 0.7 0 Supply Voltage (V) BIAS Figure ...

Page 17

Typ -11 -13 - Floting Supply Voltage (V) BS Figure 25. Maximum V S vs. Supply Voltage 11 10 Max. 9 Typ. 8 Min -50 - Temperature ...

Page 18

Temperature ( Figure 29. DT Mode Select Threshold (4) vs. Tem perature 2.0 1.6 Max. 1.2 Typ. 0.8 Min. 0.4 0.0 -50 - Temperature ( Figure ...

Page 19

Frequency (kHz) Figure 32. IRS20124S vs. Frequency (IRFBC20 = =12 V gate 100 Frequency (kHz) Figure 34. ...

Page 20

Functional description Programmable Dead-time The IRS20124 has an internal deadtime generation block to reduce the number of external components in the output stage of a Class D audio amplifier. Selectable deadtime through the DT/SD pin volt- age is an easy ...

Page 21

DT/SD pin DT/SD pin provides two functions: 1) setting dead- time and 2) shutdown. The IRS20124 determines its operation mode based on the voltage applied to the DT/SD pin. An internal comparator translates which mode is being used by comparing ...

Page 22

MOSFET carries a part of the load current in an audio cycle. Bi-directional current sensing offers over current detection capabilities in both cases by monitoring only the low side MOSFET. Load Current 0 Direction in MOSFET Current and Load ...

Page 23

Vcc R3 OC SET1 R4 OC SET2 R5 COM External Resistor Network to Set OC Threshold How to set OC Threshold The positive and negative trip thresholds for bi- directional current sensing are set by the voltages at OC ...

Page 24

OC Output Signal The OC pin open drain output. The OC pin is pulled down to ground when an over current condition is detected. A single external pull-up resistor can be shared by multiple IRS20124 OC ...

Page 25

Case Outline www.irf.com 14 Lead SOIC (narrow body) IRS20124S(PbF) 01-6019 01-3063 00 (MS-012AB) 25 ...

Page 26

Tape & Reel 14-Lead SOIC NTROLLING D IMENSION ...

Page 27

... Pin 1 Identifier ? MARKING CODE P Lead Free Released Non-Lead Free Released 14-Lead SOIC IRS20124SPbF 14-Lead SOIC Tape & Reel IRS20124STRPbF WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel:(310) 252-7105 www.irf.com IRSxxxxx YWW? ?XXXX (Prod mode - 4 digit SPN code) Assembly site code ...