Data Sheet

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Document Number: MC33926

Rev. 10.0, 8/2014

Freescale Semiconductor

Technical Data



5.0 A Throttle Control H-Bridge

The 33926 is a SMARTMOS monolithic H-Bridge Power IC

designed primarily for automotive electronic throttle control, but is

applicable to any low-voltage DC servo motor control application

within the current and voltage limits stated in this specification.

The 33926 is able to control inductive loads with currents up to

5.0

A peak. RMS current capability is subject to the degree of

heatsinking provided to the device package. Internal peak-current

limiting (regulation) is activated at load currents above 6.5

A 1.5 A.

Output loads can be pulse width modulated (PWM’ed) at frequencies

up to 20 kHz. A load current feedback feature provides a proportional

(0.24% of the load current) current output suitable for monitoring by a

microcontroller’s A/D input. A Status Flag output reports

undervoltage, overcurrent, and overtemperature fault conditions.

Two independent inputs provide polarity control of two half-bridge

totem-pole outputs. Two independent disable inputs are provided to

force the H-Bridge outputs to tri-state (high-impedance off state). An

inverted input changes the IN1 and IN2 inputs to LOW = true logic.

Features

• 5.0 to 28 V continuous operation (transient operation from 5.0 to

40 V)

• 225 m maximum R

DS(on)

at 150 °C (each H-Bridge MOSFET)

•3.0 V and 5.0 V TTL / CMOS logic compatible inputs

• Overcurrent limiting (Regulation) via an internal constant-off-time

PWM

• Output short-circuit protection (short to V

PWR

or ground)

• Temperature dependent current limit threshold reduction

• All Inputs have an internal source/sink to define the default (floating

input) states

• Sleep mode with current draw < 50 µA (with inputs floating or set to

match default logic states)

Figure 1. 33926 Simplified Application Diagram

SCALE 2:1

PNB SUFFIX (Pb-FREE)

32-PIN PQFN

Bottom View

33926

AUTOMOTIVE THROTTLE H-BRIDGE

ACTUATOR/ MOTOR EXCITER

98ARL10579D

Applications

• Electronic Throttle Control (ETC)

• Exhaust Gas Recirculation (EGR)

• Turbo Flap Control

• Industrial and Medical pumps and motor control

IN1

IN2

INV

SLEW

VPWR

CCP

OUT1

OUT2

PGND

AGND

MCU

33926

PWR

MOTOR

Summary of content (26 pages)

PAGE 1
Freescale Semiconductor Technical Data Document Number: MC33926 Rev. 10.0, 8/2014 5.0 A Throttle Control H-Bridge 33926 The 33926 is a SMARTMOS monolithic H-Bridge Power IC designed primarily for automotive electronic throttle control, but is applicable to any low-voltage DC servo motor control application within the current and voltage limits stated in this specification. The 33926 is able to control inductive loads with currents up to 5.0 A peak.
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ORDERABLE PARTS ORDERABLE PARTS This section describes the part numbers available to be purchased along with their differences. Valid orderable part numbers are provided on the web. To determine the orderable part numbers for this device, go to http://www.freescale.com and perform a part number search for the following device numbers. Table 1. Orderable Part Variations Part Number MC33926PNB Notes Temperature (TA) (1) -40 to 125 °C Package 32 PQFN Notes 1.
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INTERNAL BLOCK DIAGRAM INTERNAL BLOCK DIAGRAM VPWR LOGIC SUPPLY CCP VDD VCP CHARGE PUMP HS1 HS2 OUT1 TO GATES EN HS1 IN1 LS1 IN2 HS2 D2 D1 INV GATE DRIVE AND PROTECTION LOGIC SLEW OUT2 LS1 PGND LS2 VSENSE ILIM PWM SF LS2 CURRENT MIRROR AND CONSTANT OFF-TIME PWM CURRENT REGULATOR FB AGND PGND Figure 2.
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PIN CONNECTIONS D1 OUT2 OUT2 OUT2 OUT2 25 NC 2 24 PGND SLEW 3 23 PGND VPWR 4 22 PGND AGND 5 21 SF VPWR 6 20 PGND INV 7 19 PGND FB 8 18 PGND NC 9 17 NC AGND D2 OUT1 OUT1 OUT1 10 11 12 13 14 15 16 OUT1 IN1 32 31 30 29 28 27 26 VPWR 1 EN Transparent Top View of Package IN2 VPWR CCP PIN CONNECTIONS Figure 3. 33926 Pin Connections A functional description of each pin can be found in the Functional Description section beginning on page 13. Table 2.
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PIN CONNECTIONS Table 2. 33926 Pin Definitions (continued) Pin Pin Name Pin Function Formal Name 12, 13, 14, 15 OUT1 Power Output H-Bridge Output 1 16 D2 Logic Input Disable Input 2 (Active Low) When D2 is logic LOW, both OUT1 and OUT2 are tri-stated. (Schmitt trigger input with ~80 A sink so default condition = disabled.
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ELECTRICAL CHARACTERISTICS MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS MAXIMUM RATINGS Table 3. Maximum Ratings All voltages are with respect to ground unless otherwise noted. Exceeding these ratings may cause a malfunction or permanent damage to the device. These parameters are not production tested. Symbol Ratings Value Unit Notes V (1) ELECTRICAL RATINGS VPWR(SS) VPWR(T) Power Supply Voltage Normal Operation (Steady-state) Transient Overvoltage - 0.3 to 28 - 0.
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ELECTRICAL CHARACTERISTICS MAXIMUM RATINGS Table 3. Maximum Ratings (continued) All voltages are with respect to ground unless otherwise noted. Exceeding these ratings may cause a malfunction or permanent damage to the device. These parameters are not production tested. Symbol Ratings Value Unit Notes TPPRT Peak Package Reflow Temperature During Reflow 250 °C (7) (8) RJC Approximate Junction-to-Case Thermal Resistance < 1.0 C/W (9) Notes 7.
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ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS Table 4. Static Electrical Characteristics Characteristics noted under conditions 5.0 V  VPWR  28 V, - 40 C  TA  125 C, GND = 0 V, unless otherwise noted. Typical values noted reflect the approximate parameter means at TA = 25 °C under nominal conditions, unless otherwise noted. Symbol Characteristic Min Typ Max Unit Notes 5.0 – – – 28 40 V (10) (11) – – 50 A (12) – – 20 4.
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ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS Table 4. Static Electrical Characteristics (continued) Characteristics noted under conditions 5.0 V  VPWR  28 V, - 40 C  TA  125 C, GND = 0 V, unless otherwise noted. Typical values noted reflect the approximate parameter means at TA = 25 °C under nominal conditions, unless otherwise noted. Symbol Characteristic Min Typ Max Unit Notes – – – 120 – – – 225 325 m (15) 5.2 – 6.5 4.2 8.
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ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS Table 5. Dynamic Electrical Characteristics Characteristics noted under conditions 5.0 V  VPWR  28 V, - 40 C  TA  125 C, GND = 0 V, unless otherwise noted. Typical values noted reflect the approximate parameter means at TA = 25 °C under nominal conditions, unless otherwise noted.
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ELECTRICAL CHARACTERISTICS TIMING DIAGRAMS VIN1, IN2 (V) 5.0 VOUT1, 2 (V) TIMING DIAGRAMS VPWR 1.5 V 1.5 V 0 t DON t DOFF 80% 20% 0 TIME 5.0 V 1.5 V 0V IO = 100 mA VOUT1, 2 VD1, D2 (V) Figure 4. Output Delay Time tDDISABLE 90% 0V TIME Figure 5. Disable Delay Time VOUT1, 2 (V) . tF VPWR tR 90% 90% 10% 0 10% TIME Figure 6. Output Switching Time Overload Condition IOUT, CURRENT (A) 9.0 ISC Short-circuit Detection Threshold tB 6.
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ELECTRICAL CHARACTERISTICS TIMING DIAGRAMS Short-circuit Condition t FAULT IOUT, CURRENT (A) 9.0 ISC Short-circuit Detection Threshold Hard Short Occurs tB 6.5 OUT1, OUT2 Tri-stated, SF set Low Ilim 0.0 5.0 t B (~16 s) TIME Figure 8. Short-circuit Detection Turn-OFF Time tFAULT . ILIM CU R RENT (A) No min al C u rren t L im it T hresho ld C u rren t L imit T hresho ld F o ldb ack. Op eration with in th is regio n m u st b e lim ited to n on -rep etitive even ts no t to exceed 30 s p er 24 hr.
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FUNCTIONAL DESCRIPTION INTRODUCTION FUNCTIONAL DESCRIPTION INTRODUCTION Numerous protection and operational features (speed, torque, direction, dynamic breaking, PWM control, and closed-loop control) make the 33926 a very attractive, cost-effective solution for controlling a broad range of small DC motors. The 33926 outputs are capable of supporting peak DC load currents of up to 5.0 A from a 28 VPWR source.
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FUNCTIONAL DESCRIPTION FUNCTIONAL PIN DESCRIPTION INPUT 1,2 AND DISABLE INPUT 1,2 (IN1, IN2, AND D1, D2) These pins are input control pins used to control the outputs. These pins are 3.0 V/ 5.0 V CMOS-compatible inputs with hysteresis. IN1 and IN2 independently control OUT1 and OUT2, respectively. D1 and D2 are complementary inputs used to tristate disable the H-Bridge outputs.
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FUNCTIONAL INTERNAL BLOCK DESCRIPTION FUNCTIONAL PIN DESCRIPTION FUNCTIONAL INTERNAL BLOCK DESCRIPTION CURRENT SENSE VOLTAGE REGULATION TEMPERATURE CHARGE SENSE PUMP ANALOG CONTROL AND PROTECTION PWM CONTROLLER MCU INTERFACE H-BRIDGE OUTPUT DRIVERS OUT1 - OUT2 COMMAND AND FAULT REGISTERS PROTECTION LOGIC CONTROL GATE CONTROL LOGIC Figure 10. 33926 Functional Internal Block Diagram ANALOG CONTROL AND PROTECTION CIRCUITRY The on-chip voltage regulator supplies 3.3 V to the internal logic.
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FUNCTIONAL DEVICE OPERATION OPERATIONAL MODES FUNCTIONAL DEVICE OPERATION SF, LOGIC OUT D2, LOGIC IN D1, LOGIC IN INn, LOGIC IN ILOAD, OUTPUT CURRENT (A) OPERATIONAL MODES 9.0 Typical Short-circuit Detection Threshold 6.
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FUNCTIONAL DEVICE OPERATION LOGIC COMMANDS AND REGISTERS LOGIC COMMANDS AND REGISTERS Table 6. Truth Table The tri-state conditions and the status flag are reset using D1 or D2. The truth table uses the following notations: L = LOW,  H = HIGH, X = HIGH or LOW, and Z = High-impedance. All output power transistors are switched off.
PAGE 18
FUNCTIONAL DEVICE OPERATION PROTECTION AND DIAGNOSTIC FEATURES PROTECTION AND DIAGNOSTIC FEATURES SHORT-CIRCUIT PROTECTION If an output short-circuit condition is detected, the power outputs tri-state (latch-OFF) independent of the input (IN1 and IN2) states, and the fault status output flag (SF) is SET to a logic LOW.
PAGE 19
TYPICAL APPLICATIONS INTRODUCTION TYPICAL APPLICATIONS INTRODUCTION A typical application schematic is shown in Figure 14. For precision high current applications in harsh, noisy environments, the VPWR by-pass capacitor may need to be substantially larger. VPWR 100 F LOW ESR 100 nF VPWR 33 nF LOGIC SUPPLY CCP VCP CHARGE PUMP STATUS FLAG TO ADC RFB 270  INV M OUT2 LS1 LS2 LS1 IN2 +5.
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PACKAGING PACKAGE DIMENSIONS PACKAGING PACKAGE DIMENSIONS For the most current package revision, visit www.freescale.com and perform a keyword search using the 98Axxxxxxxxx listed below.
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PACKAGING PACKAGE DIMENSIONS 33926 Analog Integrated Circuit Device Data Freescale Semiconductor 21
PAGE 22
ADDITIONAL DOCUMENTATION THERMAL ADDENDUM (REV 2.0) ADDITIONAL DOCUMENTATION 33926 THERMAL ADDENDUM (REV 2.0) Introduction This thermal addendum is provided as a supplement to the 33926 technical datasheet. The addendum provides thermal performance information that may be critical in the design and development of system applications. All electrical, application, and packaging information is provided in the datasheet.
PAGE 23
D1 OUT2 OUT2 OUT2 OUT2 25 NC 2 24 PGND SLEW 3 23 PGND VPWR 4 22 PGND AGND 5 21 SF VPWR 6 20 PGND INV 7 19 PGND FB 8 18 PGND NC 9 17 NC AGND A D2 OUT1 OUT1 OUT1 10 11 12 13 14 15 16 OUT1 IN1 32 31 30 29 28 27 26 VPWR 1 EN IN2 VPWR CCP ADDITIONAL DOCUMENTATION THERMAL ADDENDUM (REV 2.0) 33926PNB Pin Connections 32-Pin PQFN 0.80 mm Pitch 8.0 mm x 8.0 mm Body Figure 16. Thermal Test Board Device on Thermal Test Board Material: Table 8.
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ADDITIONAL DOCUMENTATION THERMAL ADDENDUM (REV 2.0) 90 Thermal Resistance [ºC/W] 80 70 60 50 40 30 x 20 RJA [°C/W] 10 0 0 300 600 Heat Spreading Area A [mm²] Figure 17. Device on Thermal Test Board RJA Thermal Resistance [ºC/W] 100 10 x 1 0.1 1.00E-03 1.00E-02 1.00E-01 RJA [°C/W] 1.00E+00 1.00E+01 1.00E+02 1.00E+03 1.00E+04 Time[s] Figure 18. Transient Thermal Resistance RJA, 1.
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REVISION HISTORY THERMAL ADDENDUM (REV 2.0) REVISION HISTORY Revision Date Description 1.0 3/2006 • Updated formatting and technical content throughout entire document. 2.0 6/2007 • Updated formatting and technical content throughout entire document 3.0 10/2006 • Updated formatting and technical content throughout entire document 4.0 12/2006 • Updated formatting and technical content throughout entire document 5.
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