DSPIC30F2020-30I/SP - 30 MIPS 16-bit SMPS DSC | Microchip | SPDIP-28
MPN: DSPIC30F2020-30I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.1 | $7.10 |
| 10 | $6.4 | $64.00 |
| 100 | $5.55 | $555.00 |
| 500 | $4.95 | $2,475.00 |
| 1,000 | $4.4 | $4,400.00 |
DSPIC30F2020-30I/SP Overview
What is a Digital Signal Controller? A DSC is a hybrid device that combines a microcontroller (MCU) with a digital signal processor (DSP) on a single die. Unlike a pure MCU that executes instructions sequentially, a DSC adds single-cycle MAC (multiply-accumulate) operations, dual-operand fetches, and a hardware barrel shifter, enabling real-time control loop math. The hierarchy is: DSC -> MCU/DSP hybrid -> embedded controller -> semiconductor IC. dsPIC30F devices sit in Microchip's SMPS-optimized sub-family, targeting multi-loop digital control.
Key features include a dedicated 10-bit ADC with up to 2 MSPS conversion rate, three 16-bit timers, a 16-bit PWM module with up to 4 duty-cycle generators and 8 outputs, plus I2C, SPI, and UART communication peripherals. The DSPIC30F2020-30I/SP integrates a 5-channel, 10-bit ADC, and supports up to 30 MIPS operation. The on-chip peripherals are tuned for closed-loop digital control of forward, flyback, push-pull, half-bridge, and full-bridge converter topologies.
Architecturally, the DSPIC30F2020 uses a 16-bit (24-bit-wide instruction) modified Harvard core with 16 working registers, a hardware DO and REPEAT loop engine, and zero-overhead looping primitives. SMPS-dedicated features include high-speed PWM with programmable dead-time control, fault input pins, and ADC triggering synchronized to the PWM period, which removes sample-to-PWM-edge jitter.
Typical applications span AC-DC converters, DC-DC converters, power factor correction (PFC) stages, uninterruptible power supplies (UPS), solar inverters, and digital welding controls. Engineers select this part when migrating analog-compensated SMPS designs to digital control where board space, reliability, and adaptive control outweigh raw MIPS.
Design consideration: the device's 30 MIPS sustained throughput is achievable only when the PLL is engaged; at the internal 7.37 MHz FRC oscillator the throughput drops. Ensure the inductor, MOSFETs, and ADC input network are placed per the dsPIC SMPS layout guide to avoid noise-induced ADC jitter.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer product page.
Drop-in alternatives for DSPIC30F2020-30I/SP — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with DSPIC30F2020-30I/SP (same form factor and footprint) — differing in Core Architecture, Package, Mounting Type, Operating Temperature, Data RAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC30F2020-30I/SO
✅ Drop-In✓ In Stock
$5.82 / Unit
View Datasheet →DSPIC30F2010-30I/SP
✅ Drop-In✓ In Stock
$3.6 / Unit
View Datasheet →DSPIC30F1010-30I/SP
✅ Drop-In✓ In Stock
$3.62 / Unit
View Datasheet →DSPIC33FJ32GP202-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC30F2020-30I/SP Maximum Ratings & Electrical Characteristics
| Product Type | Digital Signal Controller (DSC) |
| Core Architecture | dsPIC30F 16-bit modified Harvard |
| Program Memory (Flash) | 12 KB |
| Data RAM | 512 bytes |
| Maximum CPU Speed | 30 MIPS |
| Operating Voltage Range | 2.5 V to 5.5 V |
| Supply Voltage (VDD) | 4.5 V to 5.5 V |
| I/O Pins | 21 |
| ADC | 10-bit, up to 2 MSPS |
| PWM Channels | 8 outputs / 4 duty-cycle generators |
| Timers | 3 x 16-bit |
| Communication Peripherals | I2C, SPI, UART |
| Package | SPDIP-28 (300 mil) |
| Operating Temperature | -40C to +85C (Industrial) |
| Mounting Type | Through-Hole |
| RoHS Status | Compliant |
| Lead-Free | Yes |
DSPIC30F2020-30I/SP Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | AN0/VREF+/CN2/RB0 — Analog input 0 / positive voltage reference / I/O |
| Pin 3 | AN1/VREF-/CN3/RB1 — Analog input 1 / negative voltage reference / I/O |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select / I/O |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / QEI index / I/O |
| Pin 6 | AN4/QEA/CN6/RB4 — Analog input 4 / QEI A / I/O |
| Pin 7 | AN5/QEB/CN7/RB5 — Analog input 5 / QEI B / I/O |
| Pin 8 | VSS — Digital ground |
| Pin 9 | OSCI/CLKI/CN30/RA8 — Crystal oscillator input / external clock / I/O |
| Pin 10 | OSCO/CLKO/CN29/RA9 — Crystal oscillator output / system clock output / I/O |
| Pin 11 | PWM1H/CN8/RA0 — PWM output 1 high / I/O |
| Pin 12 | PWM1L/CN9/RA1 — PWM output 1 low / I/O |
| Pin 13 | PWM2H/CN10/RA2 — PWM output 2 high / I/O |
| Pin 14 | PWM2L/CN11/RA3 — PWM output 2 low / I/O |
| Pin 15 | PWM3H/CN12/RA4 — PWM output 3 high / I/O |
| Pin 16 | PWM3L/CN13/RA5 — PWM output 3 low / I/O |
| Pin 17 | PWM4H/CN14/RA6 — PWM output 4 high / I/O |
| Pin 18 | PWM4L/CN15/RA7 — PWM output 4 low / I/O |
| Pin 19 | VSS — Digital ground |
| Pin 20 | VDD — Digital supply voltage (2.5V to 5.5V) |
| Pin 21 | FLTA/INT0/CN16/RF6 — PWM fault A input / external interrupt 0 / I/O |
| Pin 22 | U1RX/SDA1/CN17/RF2 — UART1 RX / I2C1 data / I/O |
| Pin 23 | U1TX/SCL1/CN18/RF3 — UART1 TX / I2C1 clock / I/O |
| Pin 24 | SCK1/SDO1/CN20/RF4 — SPI1 clock / SPI1 data out / I/O |
| Pin 25 | SDI1/CN21/RF5 — SPI1 data in / I/O |
| Pin 26 | TMR1/T1CK/CN22/RF0 — Timer1 external clock / I/O |
| Pin 27 | AVSS — Analog ground |
| Pin 28 | AVDD — Analog supply voltage |
Typical Applications
DSPIC30F2020-30I/SP is suitable for 6 applications: AC-DC Power Supply Control, Power Factor Correction (PFC) Stage, Solar Micro-Inverter MPPT Control, Uninterruptible Power Supply (UPS) Control, Digital Welding Control, Industrial DC Motor Speed Control.
AC-DC Power Supply Control
The DSPIC30F2020-30I/SP fits AC-DC converter designs because its 30 MIPS throughput and dedicated PWM with programmable dead-time control handle forward, flyback, and PFC boost topologies at switching frequencies up to 500 kHz. The 10-bit ADC at 2 MSPS synchronizes to the PWM period via hardware triggers, eliminating sample-to-edge jitter that destabilizes voltage-mode control loops. Compared to analog UC3842 implementations, the DSC adds adaptive control, soft-start profiling, and firmware-updatable compensation. Designers typically pair this part with external gate drivers and current-sensing amplifiers, while the internal 12 KB Flash accommodates the control loop plus housekeeping tasks such as housekeeping telemetry and protection. The 28-pin SPDIP footprint allows through-hole assembly suited for industrial-grade power supplies where vibration resistance matters.
Recommended
Power Factor Correction (PFC) Stage
The DSPIC30F2020-30I/SP is well matched to PFC boost pre-regulators because its single-cycle MAC engine executes average-current-mode control at the switching frequency. The 30 MIPS budget allows the controller to run both the PFC loop and a downstream DC-DC control loop on a single device, reducing BOM cost. The integrated PWM with dead-time control drives the PFC MOSFET directly through an external gate driver. Hardware ADC triggering synchronized to the PWM edge eliminates the input-current sampling jitter that causes audible noise and THD degradation. The industrial -40C to +85C temperature range supports outdoor telecom rectifier and LED driver PFC stages without derating.
Recommended
Solar Micro-Inverter MPPT Control
The DSPIC30F2020-30I/SP enables Maximum Power Point Tracking (MPPT) in PV micro-inverters and module-level power electronics. Its 30 MIPS performance runs Perturb & Observe or Incremental Conductance MPPT algorithms at PV panel sampling rates (typically 10-100 Hz) while simultaneously servicing grid-tie inverter control loops. The 12 KB Flash stores both the MPPT state machine and the grid-synchronization PLL firmware. The 10-bit ADC samples panel voltage, panel current, and grid voltage with adequate resolution for residential solar inverters below 600W. The 5V ADC input range matches typical PV voltage dividers and current-sense amplifier outputs without level shifting.
Recommended
Uninterruptible Power Supply (UPS) Control
For UPS systems, the DSPIC30F2020-30I/SP provides digital control of the inverter stage, battery charger, and transfer-switch logic in a single chip. Its 30 MIPS throughput handles sinusoidal PWM generation at 50/60 Hz with carrier frequencies high enough to push switching harmonics above the audible band. The PWM fault input pins enable hardware shutdown on overcurrent within one PWM cycle, critical for safety in battery-backed systems. The 21 GPIO pins accommodate inverter enable, transfer relay control, battery temperature sensing, and front-panel LED indicators without external logic expanders. Industrial temperature grade supports server-room and telecom UPS installations.
Recommended
Digital Welding Control
The DSPIC30F2020-30I/SP suits digital welding power source control where arc stability requires tight current-loop regulation at switching frequencies up to 100 kHz. Its 30 MIPS budget supports the welding-specific control algorithms (constant-current, constant-voltage, pulsed, and stick welding modes) plus operator interface handling. The 10-bit ADC at 2 MSPS samples arc current at the switching frequency, enabling real-time arc-length compensation. The PWM module drives the IGBT inverter through optocoupler-isolated gate drivers. The through-hole SPDIP package withstands the high-vibration, high-temperature environment inside welding equipment cabinets better than fine-pitch SMD alternatives.
Recommended
Industrial DC Motor Speed Control
Beyond pure power conversion, the DSPIC30F2020-30I/SP functions as a BLDC or brushed DC motor controller in industrial automation. Its PWM module generates complementary outputs with programmable dead-time, ideal for driving a 3-phase inverter bridge at low to moderate motor speeds. The DSP engine runs Field-Oriented Control (FOC) or trapezoidal commutation firmware; 12 KB Flash fits FOC plus startup and protection code. Quadrature encoder interface is achievable through the dedicated timer/capture peripheral, providing position feedback for closed-loop speed control. The 28-pin SPDIP footprint and industrial temperature grade suit factory-floor equipment and motion-control sub-assemblies.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC30F2020-30I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC30F2010-30I/SP | DSPIC30F1010-30I/SP | DSPIC33FJ32GP202-I/SP |
|---|---|---|---|---|
| Package | SPDIP-28 | SPDIP-28 - same | SPDIP-28 - same | SPDIP-28 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 12 KB | 12 KB | 6 KB | 32 KB |
| Data RAM | 512 bytes | 1 KB | 512 bytes | 2 KB |
| Maximum CPU Speed | 30 MIPS | 30 MIPS | 30 MIPS | 40 MIPS |
| Operating Voltage | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 3.0V to 3.6V (3.3V only) |
| PWM Channels | 4 generators / 8 outputs | 6 generators / 8 outputs | 4 generators / 8 outputs | 2 generators / 4 outputs |
| ADC | 10-bit, 2 MSPS | 10-bit, 2 MSPS | 10-bit, 2 MSPS | 10-bit, 1.1 MSPS (12-bit option on some variants) |
| CAN Module | No | Yes (CAN 2.0B) | No | No |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Dedicated SMPS-optimized PWM with hardware fault input (vs DSPIC30F1010-30I/SP)
- 5V tolerant analog inputs (vs DSPIC33FJ32GP202-I/SP)
- Smaller Flash footprint with full SMPS feature set (vs DSPIC30F2010-30I/SP)
Design Notes
Place the decoupling capacitors as close as possible to the AVDD/AVSS and VDD/VSS pin pairs. Use a 10uF tantalum or ceramic on AVDD plus a 100nF ceramic bypass, and the same on VDD. The AVDD rail should be derived from VDD through an LC filter (typically 10uH + 10uF) to reject digital switching noise from corrupting the ADC reference. A solid ground plane is essential; avoid routing analog and digital traces over the same ground plane cutout.
Route the analog ADC inputs (AN0-AN5) away from the PWM output traces and gate-driver signals. The PWM edges have dv/dt of 2-5 kV/us and couple capacitively into nearby analog traces, degrading ADC accuracy. Use a ground guard ring around the analog input network and add a small RC filter (typically 100 ohm + 100pF) at each analog input pin to form a low-pass anti-aliasing filter. For current-sensing applications, choose the filter bandwidth to be at least 5x the switching frequency.
Do not attempt to operate at 30 MIPS without first configuring the PLL; the default internal FRC oscillator runs at 7.37 MHz and yields only ~7 MIPS, which is insufficient for closed-loop SMPS control. Always validate the PWM fault input (FLTA) pin configuration before enabling the PWM outputs - an unconfigured FLTA pin can latch the PWM in a fault state. When migrating from dsPIC30F2010 firmware, verify that the CAN module registers are not referenced, since the DSPIC30F2020 lacks the CAN peripheral.
Estimated: At maximum CPU activity with all peripherals enabled, the DSPIC30F2020 draws approximately 80 mA at 5V/30 MIPS, dissipating 400 mW of power. The SPDIP-28 package has theta_JA of approximately 65 C/W, yielding a junction temperature rise of 26C above ambient at full load - well within the 125C junction limit. No external heatsink is required under normal SMPS control firmware load; however, firmware that runs the CPU at 100% utilization with all peripherals active may require derating at high ambient temperatures above 70C.
Compliance Information
RoHS compliant per Microchip product page. Industrial -40C to +85C operating temperature grade. Not AEC-Q100 qualified - this part is not intended for automotive under-hood applications.
