For further information please contact your local Farnell offi ce or visit the web at: www.farnell.com 10206FSFor further information please contact your local Farnell offi ce or visit the web at: www.farnell.com 10206FS

THE POWER MANAGEMENT LEADER

Features• Floating channel designed for bootstrap operation, fully operational to +600 V

• Tolerant to negative transient voltage – dV/dt immune

• Full 3-phase gate driver plus one low-side driver

• Under-voltage lockout for all channels

• Cross-conduction prevention logic

• Power-on reset

• Integrated bootstrap diode for fl oating channel supply

• Over-current protection on: DC- (Itrip), DC+ (Ground fault ) and PFCtrip/BRtrip (PFC/Brake protection).

• Single pin fault diagnostic function

• Diagnostic protocol to address fault register

• Self biasing for ground fault detection high-voltage circuit

• 3.3 V logic compatible

• Lower di/dt gate drive for better noise immunity

• Externally programmable delay for automatic fault clear

• RoHS compliant

Typical Applications• Air conditioner inverters

• Micro/mini inverter drives

• General purpose inverters

• Motor control

Summary

Target Application: Air Conditioners

The need to deliver energy-effi cient products with more and more functions amidst tightening safety norms around the world has driven modern appliance manufacturers to employ state-of-the-art electronics. Concerns of escalating system complexity and reliability are being addressed by pursuing a strategy of high-level integration and component count reduction. The IRS26302DJ high-voltage IC (HVIC) offering from International Rectifi er is well suited to today’s needs as it integrates all system gate drive requirements in a single package, while boosting system safety through a host of protection features and system intelligence through enhanced communication with the microcontroller.

Simplifi ed Solution

The IRS26302DJ is a high-voltage, high speed power MOSFET and IGBT gate driver with three independent high- and low-side referenced output channels for three-phase applications and an additional low-side channel that can be employed for either PFC or brake IGBT driving operation. Reduction in system component count and complexity as a result of the additional low-side gate driver and integrated bootstrap functionality translates into improved reliability, reduced returns from the fi eld and ultimately lower overall system cost for the appliance manufacturer.

IRS26302DJPbF – Fully Protected Three Phase Gate Drive IC Featuring Extra Channel

Topology 3-Phase + 1 Low-side

VOFFSET ≤ 600V

VOUT 10V - 20V

IO+ &IO- (typ)

3-Phase 200mA & 350mA

1 Low-side 250mA & 430mA

Deadtime (typ) 290ns

Package 44-lead PLCC w/out 12 leads

To High-SidePower Switches(x3)

Low-SideOutput (x4)

COM

High-SideOutput (x3)

BootFETVB: High-SidePower Supply (x3)

High-Side Input (x3)

APD diode

Logic

Low-Side Input (x4)

FAULT/EN

VCC

PFCTRIP

VDC VSDCGF

RCIN

VSS

ITRIP

VS: High-SideReturn (x3)

To Low-SidePower Switches(x4)

Delay

Logic

HV LevelShifters

BootstrapLogic

HV Drive Stage

HV Well

600V 3-Phase Gate Drive ICwith UVLO Protection

Integrated BootstrapFunctionality

PFC ComparatorInput and Filter

Ground Fault ComparatorInput and Filter

Schmitt-Trigger Inputs,Noise Filter and Shoot-through Protection

LV Drive Stage

General PurposeComparator Input & Filter

IC detects overcurrentand performs shutdown

Logic

InverterDC+bus

1 Gate Driver IC= 7 Channels

Benchmark safety standard established through total system over-current protection and enhanced input fi ltering

IRS26302DJPbFFully Protected Three-Phase Gate Driver IC Featuring Extra Channel

HVIC / MOTOR CONTROL

IRS26302DJPbF – Fully Protected Three Phase Gate Drive IC Featuring Extra Channel

With the IRS26302DJ, International Rectifi er has set a new benchmark in system over-current protection standards by way of three independent current monitors that detect excess current in three shunt resistors – one each on DC+ bus, DC- bus and either PFC or brake circuitry to provide a comprehensive current protection scheme for appliance inverter applications. Advanced input fi lters on all current monitors effectively prevent nuisance trips due to noise in the system’s environment.

DC+ current Monitor Circuitry

• Unique DC+ current monitor offers the only means to detect phase-earth shorts inside the motor (insulation break-down etc)

• DC+ current monitor circuit is completely self-biasing, requiring no external supply

An enable function is available to terminate all outputs simultaneously and is provided through a bidirectional pin combined with an open-drain FAULT pin. Fault signal is provided to indicate that an over-current or VCC UVLO under-voltage

shutdown has occurred. Over-current fault conditions are cleared automatically after an externally programmed delay via an RC network connected to the RCIN input.

The IRS26302DJ also features enhanced input fi lters that avoid small pulse commands which can potentially reach the gates of the switches in the inverter. This is one of the sources of problems in the fi eld and usually it is diffi cult to fi nd. The typical effect is that sometimes inverters return from the fi eld damaged with one destroyed leg without an apparent root cause. In addition to improved fi ltering techniques, the IRS26302DJ also guarantees outstanding matching in propagation time on all channels as well as dead-time automatically inserted when external dead-time is lower than a minimum safe limit.

Enhanced System Intelligence Enhanced communication with the microcontroller after occurrence of a fault condition is realized by a fault diagnostic reporting protocol in the IRS26302DJ. After each fault event, a diagnostic feature, when enabled, can communicate to the controller which fault happened in the system (UVcc, ITRIP,

GF, PCFtrip). If diagnostic is enabled by forcing all HIN = High and LIN = High, the HVIC enters into a handshake mode during which all outputs remain off, the automatic fault clear function is disabled and FLT/EN is in HZ (refer to Figure). The HVIC fault register is now ready for queries from the microcontroller for true fault reporting. This feature offers superior intelligence to the system that is especially useful for safety considerations during re-start.

DC+ BUS

DC- BUS

VCCVDC VSDCGF

HIN (x3)LIN (x3)FLT / EN

PFCIN/BRIN

RCIN

ITRIP

VSS

VB(x3)

VS(x3) VS1

VS2

VS3

ToLoad

HO (x3)

LO (x3)

COM

PFCOUT/BROUT

PFCTRIP/BRTRIP

IRS6302D

DC+ shunt current monitor

DC- shunt current monitor

3rd shunt current monitor

UV_VCCHO = LO= 0

PFCOUT/BROUT = 0FLT / EN = 0

PFCFLT/BRFLT = 0RCIN = HZ

GFITRIPITRIP

PFCTRIP/BRTRIP

Start UpHO = LO= 0

PFCOUT/BROUT = 0

Normal Operations

PFCIN HIN/LIN

HIN# = LIN# =1

HIN# = LIN# =1

HIN# = HLIN# = X

HIN# = 0LIN# = 1

PFC/BR = 0

PFC/BR = 1 HO/LO = 1

HO/LO = 0

Over-CurentHO = LO= 0

PFCOUT/BROUT = 0FLT / EN = 0

RCIN = 0

Hand ShakeHO = LO= 0

PFCOUT/BROUT = 0RCIN = 0FLT = Hz

Dial StateHO = LO= 0

PFCOUT/BROUT = 0RCIN = 0

FLT = DIAG

UV–VBSHO = 0 LO= LIN

FLT = HZRCIN = HZ VBS

VBS

VCCVCC

VCC

RCIN

Symbol Defi nition Max Test Conditions

MDT DT matching 50ns VIN = 0V and 5V without external deadtime

MT Delay matching time (tON, tOFF) 60ns VIN = 0V and 5V with external deadtime larger than DT

PM Pulse width distortion 75ns PW input - 10µs

Comprehensive over-current protection offered through three different current monitors in the IRS26302DTypical Connection Diagram

Outstanding deadtime and delay matching in IRS233(0,2)(D) along with low pulse width distortion Enhanced System intelligence through comprehensive fault diagnostic reporting

HZ = High Impedance

Fault reporting protocol in IRS26302DJ

Hand Shake Mode

Set LIN1 = L, LIN2,3 = H; HINx = HWait tDIAGIN

Set LIN2 = L, LIN1,3 = H; HINx = HWait tDIAGIN

Set LIN3 = L, LIN1,2 = H; HINx = HWait tDIAGIN

Set LIN3 = L, LIN1,2 = H; HINx = HWait tDIAGIN

Fault Query Start

FLT / EN = 0

FLT / EN = 0

FLT / EN = 0

FLT / EN = 0

YES

YES

YES

YES

NO

NO

NO

NO

Exit Fault Query

ITRIP Fault

PFCTRIP Fault

UVCC Fault

GF Fault

DC+

DC- ITRIP Shunt

GF Shunt

GFHIN 1,2,3

HIN 1,2,3LIN 1,2,3

LO 1,2,3

FLT / EN

COM

VDCVCC VSDC

VB1,2,3

VS1,2,3

VSS

RCIN

PFCIN/BRIN

PFCOUT/BROUT

PFCTRIP/BRTRIP

ITRIP