HIP4080A/81AEVALZ Intersil, HIP4080A/81AEVALZ Datasheet

HIP4080A/81AEVALZ

Manufacturer Part Number

HIP4080A/81AEVALZ

Description

DEMO BOARD FOR HIP4081A

Manufacturer

Intersil

Datasheets

1.HIP4080AIBZT.pdf (17 pages)

2.HIP4081AIBZT.pdf (16 pages)

3.HIP4080A81AEVALZ.pdf (13 pages)

Specifications of HIP4080A/81AEVALZ

Main Purpose

Power Management, H Bridge Driver (Internal FET)

Utilized Ic / Part

HIP4080A, HIP4081A

Secondary Attributes

Embedded

Primary Attributes

Other names

HIP4080A/81AEVAL
HIP4080A/81AEVAL
Q2670719

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Introduction

The HIP4080A is a member of the HIP408x family of High

Frequency H-Bridge Driver ICs. A simplified application

diagram of the HIP4080A IC is shown in Figure 1. The

HIP408x family of H-Bridge driver ICs provide the ability to

operate from 10VDC to 80VDC busses for driving H-Bridges,

whose switch elements are comprised of power N-Channel

MOSFETs. The HIP408X family, packaged in both 20 Ld DIP

and 20 Ld SOIC DIPs, provide peak gate current drive of

2.5A. The HIP4080A includes undervoltage protection,

which sends a continuous gate turn-off pulse to all gate

outputs when the V

The startup sequence of the HIP4080A is initiated when the

DIS pin must be in the low state for the IC to be enabled. The

startup sequence turns on both low side outputs, ALO and

BLO, so that the bootstrap capacitors for both sides of the

H-bridge can be fully charged. During this time the AHO and

BHO gate outputs are held low continuously to insure that no

shoot-through can occur during the nominal 400ns boot-strap

refresh period. At the end of the boot strap refresh period the

outputs respond normally to the state of the input control

signals.

A combination of bootstrap and charge-pumping techniques

is used to power the circuitry which drives the upper halves

of the H-Bridge. The bootstrap technique supplies the high

instantaneous current needed for turning on the power

devices, while the charge pump provides enough current to

“maintain” bias voltage on the upper driver sections and

MOSFETs. Since voltages on the upper bias supply pin

“float” along with the source terminals of the upper power

switches, the design of this family provides voltage capability

for the upper bias supply terminals to 95VDC.

The HIP4080A can drive lamp loads for automotive and

industrial applications as shown in Figure 2. When inductive

loads are switched, flyback diodes must be placed around

the loads to protect the MOSFET switches.

Many applications utilize the full bridge topology. These are

voice coil motor drives, stepper and DC brush motors, audio

amplifiers and even power supply inverters used in

uninterruptable power supplies, just to name a few. Of the

above, voice coil motor drives and audio amplifiers can take

advantage of the built-in comparator available in the

HIP4080A. Using the output of the comparator to add some

positive feedback, a hysteresis control, so popular with voice

coil motor drivers, can be implemented as shown in Figure 1.

In the figure, R

OUT, to the positive input of the comparator, IN+. Capacitor,

C1, integrates in a direction to satisfy the reference current

signal at IN. The IN- input of the comparator sums this

voltage returns above a nominal 8.75V. Of course, the

is fed back from the comparator output,

voltage falls below a nominal 8.25V.

Application Note

1-888-INTERSIL or 1-888-468-3774

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

HIP4080A, 80V High Frequency

current reference with a signal proportional to load current

through resistor, R

amplifier, A1. A bias voltage of 6V (represents half of the

bias voltage and the maximum rail to rail voltage of the

comparator and amplifier, A1) biases the comparator’s IN+

terminal through R

summing junction.

December 11, 2007

FIGURE 2. HIP4080A AS LAMP SWITCH DRIVER, DUAL

FIGURE 1. HIP4080A SIMPLIFIED APPLICATION

HIP4080A

12V

GND

All other trademarks mentioned are the property of their respective owners.

HIP408x

Intersil (and design) is a registered trademark of Intersil Americas Inc.

HIGH/LOW SWITCHES FOR AUTOMOTIVE AND

INDUSTRIAL CONTROLS

DIAGRAM

, which comes from a differential

and the amplifier, A1’s, positive

H-Bridge Driver

GND

80V

Author: George E. Danz

+80V

GND

AN9404.3

Related parts for HIP4080A/81AEVALZ

HIP4080A/81AEVALZ Summary of contents

Page 1

... CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 1-888-468-3774 Intersil (and design registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2007. All Rights Reserved All other trademarks mentioned are the property of their respective owners. H-Bridge Driver AN9404 ...

Page 2

... The HIP408x family of devices is fabricated using a proprietary Intersil IC process which allows this family to switch at frequencies of over 500kHz. Therefore the HIP408x family is ideal for use in Voice coil motor, switching power amplifier, DC/DC converters and high performance AC/DC and step-motor control applications ...

Page 3

BHB 2 HEN 3 DIS OUT IN IN HDEL LDEL 9 AHB 10 R4 GND 6V UNDER- CHARGE VOLTAGE PUMP HEN DIS 3 ...

Page 4

... The IN+ and IN- comparator inputs have a common mode input voltage range of 1. whereas the offset voltage is less than 5mV. For more information on the comparator specifications, see Intersil Data Sheet HIP4080A, FN3658. TABLE 1. INPUT LOGIC TRUTH TABLE IN+ > ...

Page 5

Charge Pump Circuits There are two charge pump circuits in the HIP4080A, one for each of the two upper logic and driver circuits. Each charge pump uses a switched capacitor doubler to provide about 30µA to 50µA of gate load ...

Page 6

The peak charge pump current is only about 30µA to 50µA. The gate voltage waveform, when operating without a bootstrap capacitor, will appear similar to the dotted line shown in Figure bootstrap capacitor value approximately equal ...

Page 7

... Hence the need to use a fast recovery diode. Diode recovery charge information can usually be found in most vendor data sheets. For example choose a Intersil IRF520R power MOSFET, the data book states a gate charge, Q typical and 18nC maximum, both at V maximum value of 18nC the maximum charge we should have to transfer will be less than 18nC ...

Page 8

Since the internal charge pump offsets any possible diode leakage and upper drive circuit bias currents, these sources of discharge current for the bootstrap capacitor will be ignored. The bootstrap capacitance required for the example above can be calculated as ...

Page 9

Power Dissipation, the Easy Way The average power dissipation associated with the IC and the gate of the connected MOSFETs can easily be measured using a signal generator, an averaging millimeter and a voltmeter. Low Voltage Power Dissipation Two sets ...

Page 10

BHB BHO 12V 2 BHS HEN 3 BLO DIS 4 BLS OUT IN ALS IN- 8 HDEL ALO 9 LDEL AHS 10 AHB AHO 100K 100K (0VDC TO 80VDC) C ...

Page 11

... Lower MOSFETs turn on, but upper MOSFETs don't Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that the Application Note or Technical Brief is current before proceeding. For information regarding Intersil Corporation and its products, see www.intersil.com ...

Page 12

IN2 IN1 +12V CONTROL LOGIC SECTION R29 JMPR1 1 2 OUT/BLI U2 CD4069UB JMPR2 13 12 IN+/ALI U2 CD4069UB JMPR3 5 6 HEN/BHI U2 CD4069UB R33 JMPR4 11 10 IN-/AHI CD4069UB NOTES: 1. DEVICE CD4069UB PIN 7 ...

Page 13

... GND +12V CR2 + + C4 U1 BHO DIS BLO U2 BLS IN1 JMPR1 I JMPR2 O JMPR3 ALS JMPR4 ALO IN2 O AHO LDEL C3 ALS CR1 R33 R34 BLS FIGURE 13. HIP4080A/81AEVALZ EVALUATION BOARD SILKSCREEN B+ COM R22 1 1 R24 Q2 Q4 R23 1 1 R21 AO BO ...

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