Introduction
This Intelligent Power Module (IPM) is designed for driving Permanent Magnet Synchronous Motors (PMSM), Brushless DC (BLDC) motors, and AC induction/asynchronous motors. The project is based on the NFAP1060L3TT, a fully integrated three-phase inverter power stage that combines a high-voltage gate driver, six IGBTs, and an integrated thermistor in a compact package.
The NFAP1060L3TT features a three-phase bridge configuration with separate emitter connections for the low-side IGBTs, allowing flexible motor control. It also integrates protection functions such as cross-conduction protection, external shutdown, and undervoltage lockout. An internal comparator and reference enable adjustable overcurrent protection to help protect the power stage during operation.
Features
- AC Supply Input Up to 230V AC (Supports 90V-230V AC)
- Intelligent Power Module (IPM) Power Rating 600 V, 10 A
- Logic Gate Power Supply 15V DC
- 5V DC Power Input for Thermistor and Fault Pin
- All Control Inputs and Status Outputs Have Voltage Levels Compatible with Microcontrollers
- Screw Terminal Connectors for Power Input and Motor Connections
- Header Connectors for Signal Inputs and Fault Output
- Power LED for Logic Gate Supply
- Fault/Enable Function
- DC Voltage Feedback
- On Board Fuse for Power Protection
- ON Board NTC for Inrush Current
- Built-in Under Voltage Protection
- I Trip input to Shut Down All IGBTs
- Integrated Bootstrap Diodes and Resistors
- Thermistor for Substrate Temperature Measurement
- PCB Mounting Holes 4 x 4mm
- PCB Dimensions 117.95 x 41.91mm
The power stage incorporates several built-in protection features, including:
- Cross-conduction protection
- External shutdown
- Under-voltage lockout (UVLO)
- Fault output
- DC Bus Voltage Feedback
- Over-temperature monitoring through the integrated thermistor
- Highly Integrated Device Containing All High Voltage (HV) Control from HV−DC to 3−phase Outputs in a Single Small SIP Module
- Single VDD Power Supply Due to Internal Bootstrap Circuit for High−side Gate Driver Circuit
- Lower Pass Filters at all Inputs to prevention of mall function By Noise
- Zener Diode at logic supply and at bootstrap for Prevention of voltage rise due to surge voltage
Schematic
Connections
- CN1: Pin 1 = AC Live Input (Up to 230V AC), Pin 2 = Earth, Pin 3 = AC Neutral (230V AC)
- CN2: Pin 1 = Motor Phase W, Pin 2 = Motor Phase V, Pin 3 = Motor Phase U
- CN3: Pin 1 = GND, Pin 2 = Bus Voltage Feedback, Pin 3 = I Trip, Pin 4 = Fault/Enable, Pin 5 = VEX (No Use), Pin 6 = Temperature Feed Back, Pin 7 = High Side Phase U In, Pin 8 = High Side Phase v In, Pin 9 = High Side Phase W In, Pin 10 = Low Side Phase U In, Pin 11 = Low Side Phase V In, Pin 12 = Low Side Phase W In, Pin 13 = 15V DC For Logic Gate, Pin 14 = GND, Pin 15 = 5V DC for NTC and Fault/Enable Pull Up Power, Pin 16 = GND
- D2: Logic Power LED
- F1= Fuse
Part List
| NO. | QNTY. | REF. | DESC. | MANUFACTURER | SUPPLIER | SUPPLIER PART NO |
|---|---|---|---|---|---|---|
| 1 | 2 | CN1,CN2 | 3 PIN SCREW TERMINAL PITCH 5.08MM | PHOENIX | DIGIKEY | 277-1248-ND |
| 2 | 1 | CN3 | 16 PIN MALE HEADER PITCH 2.54MM | WURTH | DIGIKEY | 732-5327-ND |
| 3 | 1 | C1 | 1KPF/100V CERAMIC SMD SIZE 1206 | YAGEO/MURATA | DIGIKEY | |
| 4 | 1 | C2 | 100/450V ELECTROLYTIC | NICHICON | DIGIKEY | 493-2599-ND |
| 5 | 2 | C3,C4 | 10K/1KV Y CAPACITOR | VISHAY | DIGIKEY | BC5182-ND |
| 6 | 1 | C5 | 0.1uF/275VX2 FILM | KEMET | DIGIKEY | 399-9651-ND |
| 7 | 3 | C6,C8,C18 | 33uF/35V ELECKTROLYTIC | KEMET | DIGIKEY | 399-A759BQ336M1VAAE075-ND |
| 8 | 4 | C7,C9,C16,C19 | 100nF/50V CERAMIC SMD SIZE 0805 | YAGEO/MURATA | DIGIKEY | |
| 9 | 6 | C10,C11,C12,C13,C14,C15 | 1nF/50V CERAMIC SMD SIZE 0805 | YAGEO/MURATA | DIGIKEY | |
| 10 | 1 | C17 | 100uF/25V ELECTROLYTIC | WURTH | DIGIKEY | 732-9022-3-ND |
| 11 | 1 | D1 | D20XB80 20A-800 OR 600V-15A BRIDGE | SHINDENGEN | DIGIKEY | 627-D20XB80-7000 |
| 12 | 1 | D2 | LED RED SMD SIZE 0805 | LITE ON INC | DIGIKEY | 160-1427-1-ND |
| 13 | 1 | F1 | FUSE HOLDER | WURTH | DIGIKEY | 732-11376-ND |
| 14 | 1 | F1-C | FUSE HOLDER CLIP | WURTH | DIGIKEY | 732-11379-ND |
| 15 | FUSE | GLASS FUSE 5X20MM , 5A/250V AC | LITTILEFUSE | DIGIKEY | F2395-ND | |
| 16 | 1 | RN1 | DNP | |||
| 17 | 3 | R1,R2,R3 | 330K 5% SMD SIZE 1206 | YAGEO/MURATA | DIGIKEY | |
| 18 | 1 | R4 | BN-LG15Y5R0MYB/6A-5OHMS | BOURNS INC | DIGIKEY | 118-BN-LG15Y5R0MYB-ND |
| 19 | 1 | R5 | 10K 5% SMD SIZE 1206 | YAGEO/MURATA | DIGIKEY | |
| 20 | 1 | R6 | 330K/3W | YAGEO | DIGIKEY | CFR3WSJT-73-330K |
| 21 | 1 | R7 | 0E SMD SIZE 0805 | YAGEO/MURATA | DIGIKEY | |
| 22 | 6 | R8,R9,R10,R11,R12,R13 | 100E 5% SMD SIZE 0805 | YAGEO/MURATA | DIGIKEY | |
| 23 | 5 | R14,R15,R16,R17,R18 | 10K 5% SMD SIZE 0805 | YAGEO/MURATA | DIGIKEY | |
| 24 | 1 | U1 | NFAP1060L | ONSEMI | DIGIKEY | NFAP1060L3TT-ND |
| 25 | 4 | ZD1,ZD2,ZD3,ZD4 | 18V/1W ZENER | CENTERAL SEMICONDUCTOR | DIGIKEY | 1514-CLL4746ATRPBFREETR-ND |
Protection Features
The module is designed to operate from an AC input of up to 230 VAC. An input NTC thermistor is provided to limit inrush current during power-up. The AC input is converted to DC through a rectifier bridge, while the DC-bus capacitor provides filtering and energy storage. An input fuse is also included for additional protection.
A screw-terminal connector is provided for convenient connection of the AC power input and motor output. A header connector provides the control interface for the PWM signals, enable input, fault output, and thermistor signal.
The ENABLE input controls the operation of the power module, while the FAULT output indicates a protection or fault condition. The integrated thermistor (TH pin) provides a temperature-dependent voltage that can be monitored by an external microcontroller or control circuit. This signal can be used to implement an external over-temperature shutdown function.
The I-TRIP pin is not used in this design. It is intended for over-current protection, but the current implementation connects the emitter terminals of all three lower-side IGBTs to ground, so the I-TRIP function is not utilized.
With its compact design and integrated power stage, gate driver, and protection features, this module provides a convenient solution for low-power three-phase BLDC, PMSM, and AC motor applications.
PCB View
